./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:22:00,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:22:00,859 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:22:00,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:22:00,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:22:00,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:22:00,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:22:00,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:22:00,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:22:00,887 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:22:00,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:22:00,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:22:00,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:22:00,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:22:00,888 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:22:00,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:22:00,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:22:00,889 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:22:00,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:22:00,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:22:00,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:22:00,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:22:00,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:22:00,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:22:00,904 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:22:00,905 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:22:00,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:22:00,905 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:22:00,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:22:00,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:22:00,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:22:00,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:22:00,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:00,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:22:00,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:22:00,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:22:00,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:22:00,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:22:00,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:22:00,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:22:00,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:22:00,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:22:00,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:22:00,909 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:22:01,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:22:01,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:22:01,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:22:01,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:22:01,154 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:22:01,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-28 02:22:02,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:22:02,331 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:22:02,339 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-28 02:22:02,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c9bd3f6/b3d448a5091740debe94ef4703804f29/FLAG648a6b6d9 [2024-06-28 02:22:02,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4c9bd3f6/b3d448a5091740debe94ef4703804f29 [2024-06-28 02:22:02,721 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:22:02,722 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:22:02,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_tso.yml/witness.yml [2024-06-28 02:22:02,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:22:02,830 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:22:02,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:02,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:22:02,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:22:02,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:02" (1/2) ... [2024-06-28 02:22:02,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551723df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:02, skipping insertion in model container [2024-06-28 02:22:02,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:02" (1/2) ... [2024-06-28 02:22:02,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c304337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:02, skipping insertion in model container [2024-06-28 02:22:02,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:02" (2/2) ... [2024-06-28 02:22:02,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551723df and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:02, skipping insertion in model container [2024-06-28 02:22:02,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:02" (2/2) ... [2024-06-28 02:22:02,846 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:22:02,897 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:22:02,898 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:22:02,898 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:22:02,899 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:22:02,899 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-28 02:22:02,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:22:03,240 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:03,248 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:22:03,350 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:03,385 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:22:03,385 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03 WrapperNode [2024-06-28 02:22:03,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:03,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:03,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:22:03,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:22:03,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,465 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 176 [2024-06-28 02:22:03,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:03,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:22:03,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:22:03,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:22:03,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,477 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,489 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:22:03,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:22:03,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:22:03,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:22:03,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:22:03,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (1/1) ... [2024-06-28 02:22:03,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:03,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:22:03,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:22:03,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:22:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:22:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:22:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:22:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:22:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:22:03,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:22:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:22:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:22:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:22:03,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:22:03,580 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:22:03,706 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:22:03,708 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:22:04,028 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:22:04,028 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:22:04,188 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:22:04,189 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:22:04,191 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:04 BoogieIcfgContainer [2024-06-28 02:22:04,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:22:04,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:22:04,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:22:04,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:22:04,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:22:02" (1/4) ... [2024-06-28 02:22:04,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aee6f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:02" (2/4) ... [2024-06-28 02:22:04,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aee6f19 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:03" (3/4) ... [2024-06-28 02:22:04,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aee6f19 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:22:04, skipping insertion in model container [2024-06-28 02:22:04,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:04" (4/4) ... [2024-06-28 02:22:04,203 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-28 02:22:04,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:22:04,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:22:04,217 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:22:04,265 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:22:04,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 02:22:04,356 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 02:22:04,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:04,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:22:04,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 02:22:04,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 02:22:04,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:22:04,380 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62cff04b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:22:04,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:22:04,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:22:04,385 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:22:04,385 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:04,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:04,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:22:04,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:04,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash 402762543, now seen corresponding path program 1 times [2024-06-28 02:22:04,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:04,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967602269] [2024-06-28 02:22:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:04,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967602269] [2024-06-28 02:22:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967602269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:22:05,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761541228] [2024-06-28 02:22:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:05,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:22:05,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:22:05,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:22:05,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:22:05,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:05,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:22:05,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:05,387 INFO L124 PetriNetUnfolderBase]: 216/386 cut-off events. [2024-06-28 02:22:05,387 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 02:22:05,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 386 events. 216/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1374 event pairs, 133 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-28 02:22:05,393 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 02:22:05,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-28 02:22:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:22:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:22:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-28 02:22:05,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-28 02:22:05,415 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-28 02:22:05,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-28 02:22:05,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:05,419 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 02:22:05,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 02:22:05,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 02:22:05,423 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 02:22:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:05,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:05,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:22:05,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:05,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash 508095192, now seen corresponding path program 1 times [2024-06-28 02:22:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:05,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410033222] [2024-06-28 02:22:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:05,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:05,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:05,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410033222] [2024-06-28 02:22:05,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410033222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:05,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:05,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:05,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144957076] [2024-06-28 02:22:05,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:05,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:05,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:22:05,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:05,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:22:05,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:05,922 INFO L124 PetriNetUnfolderBase]: 213/381 cut-off events. [2024-06-28 02:22:05,923 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-28 02:22:05,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 213/381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1343 event pairs, 109 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-28 02:22:05,927 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 02:22:05,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-28 02:22:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-28 02:22:05,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:22:05,930 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 62 transitions. [2024-06-28 02:22:05,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-28 02:22:05,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:05,934 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 02:22:05,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 02:22:05,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 02:22:05,936 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 02:22:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:05,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:22:05,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:05,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1428917206, now seen corresponding path program 1 times [2024-06-28 02:22:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:05,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298492471] [2024-06-28 02:22:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:06,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298492471] [2024-06-28 02:22:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298492471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:06,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:06,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438893761] [2024-06-28 02:22:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:06,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:06,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:22:06,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:06,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:22:06,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:06,447 INFO L124 PetriNetUnfolderBase]: 215/385 cut-off events. [2024-06-28 02:22:06,447 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-28 02:22:06,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 385 events. 215/385 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1359 event pairs, 53 based on Foata normal form. 6/390 useless extension candidates. Maximal degree in co-relation 958. Up to 320 conditions per place. [2024-06-28 02:22:06,449 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-28 02:22:06,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 261 flow [2024-06-28 02:22:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-28 02:22:06,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535483870967742 [2024-06-28 02:22:06,451 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 83 transitions. [2024-06-28 02:22:06,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 261 flow [2024-06-28 02:22:06,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:06,452 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-28 02:22:06,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-28 02:22:06,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 02:22:06,453 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-28 02:22:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:06,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:06,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:22:06,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:06,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash 342448371, now seen corresponding path program 1 times [2024-06-28 02:22:06,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:06,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975931629] [2024-06-28 02:22:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:07,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:07,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975931629] [2024-06-28 02:22:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975931629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:07,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:07,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878842827] [2024-06-28 02:22:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:07,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:07,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:22:07,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:07,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:22:07,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:07,282 INFO L124 PetriNetUnfolderBase]: 216/388 cut-off events. [2024-06-28 02:22:07,283 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-06-28 02:22:07,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 388 events. 216/388 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1382 event pairs, 28 based on Foata normal form. 6/393 useless extension candidates. Maximal degree in co-relation 1151. Up to 297 conditions per place. [2024-06-28 02:22:07,285 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-28 02:22:07,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 312 flow [2024-06-28 02:22:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 02:22:07,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2024-06-28 02:22:07,288 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 92 transitions. [2024-06-28 02:22:07,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 312 flow [2024-06-28 02:22:07,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 308 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:07,290 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 187 flow [2024-06-28 02:22:07,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-06-28 02:22:07,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-28 02:22:07,291 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 187 flow [2024-06-28 02:22:07,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:07,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:07,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:22:07,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:07,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash -157977323, now seen corresponding path program 1 times [2024-06-28 02:22:07,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:07,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034402764] [2024-06-28 02:22:07,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:07,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:07,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034402764] [2024-06-28 02:22:07,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034402764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:07,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:07,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:07,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862746190] [2024-06-28 02:22:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:07,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:07,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:07,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:07,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:07,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:07,879 INFO L124 PetriNetUnfolderBase]: 214/385 cut-off events. [2024-06-28 02:22:07,879 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2024-06-28 02:22:07,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 385 events. 214/385 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1369 event pairs, 77 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1243. Up to 374 conditions per place. [2024-06-28 02:22:07,882 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 32 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-28 02:22:07,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 275 flow [2024-06-28 02:22:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-06-28 02:22:07,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:22:07,883 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 187 flow. Second operand 5 states and 55 transitions. [2024-06-28 02:22:07,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 275 flow [2024-06-28 02:22:07,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 244 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:07,888 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 173 flow [2024-06-28 02:22:07,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-28 02:22:07,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 02:22:07,893 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 173 flow [2024-06-28 02:22:07,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:07,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:07,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:22:07,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:07,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:07,895 INFO L85 PathProgramCache]: Analyzing trace with hash -613427755, now seen corresponding path program 1 times [2024-06-28 02:22:07,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:07,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522887328] [2024-06-28 02:22:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:07,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:08,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:08,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522887328] [2024-06-28 02:22:08,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522887328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:08,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:08,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698057592] [2024-06-28 02:22:08,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:08,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:08,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:08,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:08,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:08,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:08,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:08,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:08,500 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-28 02:22:08,500 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-28 02:22:08,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 382 events. 212/382 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1361 event pairs, 76 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1219. Up to 368 conditions per place. [2024-06-28 02:22:08,503 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 02:22:08,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 277 flow [2024-06-28 02:22:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-28 02:22:08,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:22:08,504 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 173 flow. Second operand 6 states and 63 transitions. [2024-06-28 02:22:08,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 277 flow [2024-06-28 02:22:08,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 262 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:08,506 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 191 flow [2024-06-28 02:22:08,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-28 02:22:08,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 02:22:08,507 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 191 flow [2024-06-28 02:22:08,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:08,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:08,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:22:08,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:08,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:08,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1279432106, now seen corresponding path program 1 times [2024-06-28 02:22:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:08,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223997173] [2024-06-28 02:22:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:08,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:08,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223997173] [2024-06-28 02:22:08,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223997173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:08,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:08,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:08,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541231635] [2024-06-28 02:22:08,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:08,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:08,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:08,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:08,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:08,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:08,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:09,132 INFO L124 PetriNetUnfolderBase]: 211/381 cut-off events. [2024-06-28 02:22:09,132 INFO L125 PetriNetUnfolderBase]: For 1022/1022 co-relation queries the response was YES. [2024-06-28 02:22:09,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 381 events. 211/381 cut-off events. For 1022/1022 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1346 event pairs, 53 based on Foata normal form. 3/383 useless extension candidates. Maximal degree in co-relation 1287. Up to 318 conditions per place. [2024-06-28 02:22:09,135 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-06-28 02:22:09,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 342 flow [2024-06-28 02:22:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-28 02:22:09,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 02:22:09,136 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 191 flow. Second operand 6 states and 73 transitions. [2024-06-28 02:22:09,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 342 flow [2024-06-28 02:22:09,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 325 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:09,138 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 222 flow [2024-06-28 02:22:09,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-28 02:22:09,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-28 02:22:09,139 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 222 flow [2024-06-28 02:22:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:09,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:09,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:22:09,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:09,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1492311564, now seen corresponding path program 2 times [2024-06-28 02:22:09,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:09,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259759262] [2024-06-28 02:22:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:09,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:09,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:09,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259759262] [2024-06-28 02:22:09,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259759262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:09,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:09,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252056445] [2024-06-28 02:22:09,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:09,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:09,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:09,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:09,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:09,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:09,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:09,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:09,746 INFO L124 PetriNetUnfolderBase]: 206/373 cut-off events. [2024-06-28 02:22:09,746 INFO L125 PetriNetUnfolderBase]: For 1294/1294 co-relation queries the response was YES. [2024-06-28 02:22:09,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 373 events. 206/373 cut-off events. For 1294/1294 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1301 event pairs, 66 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1319. Up to 311 conditions per place. [2024-06-28 02:22:09,748 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 14 changer transitions 0/47 dead transitions. [2024-06-28 02:22:09,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 330 flow [2024-06-28 02:22:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-28 02:22:09,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 02:22:09,750 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 222 flow. Second operand 6 states and 70 transitions. [2024-06-28 02:22:09,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 330 flow [2024-06-28 02:22:09,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 315 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:09,752 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 240 flow [2024-06-28 02:22:09,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-06-28 02:22:09,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-28 02:22:09,753 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 240 flow [2024-06-28 02:22:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:09,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:09,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:22:09,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:09,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1836389678, now seen corresponding path program 1 times [2024-06-28 02:22:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135121625] [2024-06-28 02:22:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:10,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:10,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135121625] [2024-06-28 02:22:10,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135121625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:10,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221397773] [2024-06-28 02:22:10,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:10,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:10,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:10,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:10,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:10,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:10,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:10,487 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-28 02:22:10,488 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-28 02:22:10,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 368 events. 204/368 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1282 event pairs, 71 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1353. Up to 351 conditions per place. [2024-06-28 02:22:10,490 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-28 02:22:10,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 358 flow [2024-06-28 02:22:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-28 02:22:10,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271889400921659 [2024-06-28 02:22:10,491 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 240 flow. Second operand 7 states and 71 transitions. [2024-06-28 02:22:10,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 358 flow [2024-06-28 02:22:10,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 312 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:10,494 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 233 flow [2024-06-28 02:22:10,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-28 02:22:10,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-28 02:22:10,494 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 233 flow [2024-06-28 02:22:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:10,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:22:10,495 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:10,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1007688110, now seen corresponding path program 1 times [2024-06-28 02:22:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926849221] [2024-06-28 02:22:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:10,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:10,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926849221] [2024-06-28 02:22:10,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926849221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:10,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:10,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:10,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656181878] [2024-06-28 02:22:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:10,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:10,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:10,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:10,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:10,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 233 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:10,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:10,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:11,185 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-28 02:22:11,185 INFO L125 PetriNetUnfolderBase]: For 1865/1865 co-relation queries the response was YES. [2024-06-28 02:22:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 384 events. 213/384 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1367 event pairs, 56 based on Foata normal form. 3/385 useless extension candidates. Maximal degree in co-relation 1423. Up to 314 conditions per place. [2024-06-28 02:22:11,188 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 20 changer transitions 0/60 dead transitions. [2024-06-28 02:22:11,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 411 flow [2024-06-28 02:22:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 02:22:11,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 02:22:11,189 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 233 flow. Second operand 7 states and 81 transitions. [2024-06-28 02:22:11,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 411 flow [2024-06-28 02:22:11,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 388 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:11,192 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 317 flow [2024-06-28 02:22:11,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-28 02:22:11,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 02:22:11,193 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 317 flow [2024-06-28 02:22:11,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:11,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:11,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:22:11,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:11,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash 982983284, now seen corresponding path program 2 times [2024-06-28 02:22:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392069648] [2024-06-28 02:22:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:11,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:11,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392069648] [2024-06-28 02:22:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392069648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:11,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753300249] [2024-06-28 02:22:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:11,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:11,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 317 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:11,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:11,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:11,849 INFO L124 PetriNetUnfolderBase]: 216/390 cut-off events. [2024-06-28 02:22:11,849 INFO L125 PetriNetUnfolderBase]: For 2321/2324 co-relation queries the response was YES. [2024-06-28 02:22:11,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1667 conditions, 390 events. 216/390 cut-off events. For 2321/2324 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1382 event pairs, 63 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1638. Up to 325 conditions per place. [2024-06-28 02:22:11,852 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 37 selfloop transitions, 19 changer transitions 0/58 dead transitions. [2024-06-28 02:22:11,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 459 flow [2024-06-28 02:22:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 02:22:11,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 02:22:11,853 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 317 flow. Second operand 7 states and 78 transitions. [2024-06-28 02:22:11,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 459 flow [2024-06-28 02:22:11,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 438 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:11,857 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 357 flow [2024-06-28 02:22:11,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-28 02:22:11,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 02:22:11,857 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 357 flow [2024-06-28 02:22:11,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:11,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:22:11,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash 623047244, now seen corresponding path program 3 times [2024-06-28 02:22:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:11,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932239972] [2024-06-28 02:22:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:12,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:12,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:12,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932239972] [2024-06-28 02:22:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932239972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:12,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:12,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:12,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096098168] [2024-06-28 02:22:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:12,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:12,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:12,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:12,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:12,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:12,539 INFO L124 PetriNetUnfolderBase]: 219/395 cut-off events. [2024-06-28 02:22:12,539 INFO L125 PetriNetUnfolderBase]: For 2860/2863 co-relation queries the response was YES. [2024-06-28 02:22:12,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 395 events. 219/395 cut-off events. For 2860/2863 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1409 event pairs, 62 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1729. Up to 311 conditions per place. [2024-06-28 02:22:12,541 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 35 selfloop transitions, 27 changer transitions 0/64 dead transitions. [2024-06-28 02:22:12,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 559 flow [2024-06-28 02:22:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 02:22:12,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-28 02:22:12,557 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 357 flow. Second operand 7 states and 82 transitions. [2024-06-28 02:22:12,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 559 flow [2024-06-28 02:22:12,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 514 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:12,561 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 422 flow [2024-06-28 02:22:12,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-28 02:22:12,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-28 02:22:12,562 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 422 flow [2024-06-28 02:22:12,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:12,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:12,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:22:12,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:12,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1093503596, now seen corresponding path program 1 times [2024-06-28 02:22:12,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:12,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079133651] [2024-06-28 02:22:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079133651] [2024-06-28 02:22:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079133651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:13,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283894381] [2024-06-28 02:22:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:13,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:13,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:13,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 422 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:13,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:13,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:13,743 INFO L124 PetriNetUnfolderBase]: 217/390 cut-off events. [2024-06-28 02:22:13,744 INFO L125 PetriNetUnfolderBase]: For 3237/3237 co-relation queries the response was YES. [2024-06-28 02:22:13,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 390 events. 217/390 cut-off events. For 3237/3237 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1379 event pairs, 48 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1828. Up to 370 conditions per place. [2024-06-28 02:22:13,746 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-28 02:22:13,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 578 flow [2024-06-28 02:22:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-28 02:22:13,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-28 02:22:13,747 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 422 flow. Second operand 8 states and 79 transitions. [2024-06-28 02:22:13,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 578 flow [2024-06-28 02:22:13,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 539 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:13,751 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 428 flow [2024-06-28 02:22:13,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-06-28 02:22:13,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-28 02:22:13,752 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 428 flow [2024-06-28 02:22:13,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:13,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:13,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:22:13,753 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:13,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:13,753 INFO L85 PathProgramCache]: Analyzing trace with hash -742615604, now seen corresponding path program 1 times [2024-06-28 02:22:13,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:13,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686714094] [2024-06-28 02:22:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:13,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686714094] [2024-06-28 02:22:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686714094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:14,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:14,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797462467] [2024-06-28 02:22:14,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:14,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:14,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:14,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 428 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:14,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:14,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:14,404 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-28 02:22:14,405 INFO L125 PetriNetUnfolderBase]: For 3780/3780 co-relation queries the response was YES. [2024-06-28 02:22:14,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 401 events. 223/401 cut-off events. For 3780/3780 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1440 event pairs, 55 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1932. Up to 334 conditions per place. [2024-06-28 02:22:14,407 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 20 changer transitions 0/73 dead transitions. [2024-06-28 02:22:14,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 626 flow [2024-06-28 02:22:14,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 02:22:14,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-28 02:22:14,409 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 428 flow. Second operand 7 states and 83 transitions. [2024-06-28 02:22:14,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 626 flow [2024-06-28 02:22:14,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 597 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:14,414 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 466 flow [2024-06-28 02:22:14,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=466, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-06-28 02:22:14,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-28 02:22:14,415 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 466 flow [2024-06-28 02:22:14,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:14,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:14,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:22:14,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:14,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1173558795, now seen corresponding path program 1 times [2024-06-28 02:22:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345033037] [2024-06-28 02:22:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:14,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:14,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:14,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345033037] [2024-06-28 02:22:14,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345033037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:14,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:14,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:14,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046207092] [2024-06-28 02:22:14,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:14,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:14,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:14,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:15,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:15,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:15,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:15,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:15,255 INFO L124 PetriNetUnfolderBase]: 232/416 cut-off events. [2024-06-28 02:22:15,255 INFO L125 PetriNetUnfolderBase]: For 4449/4449 co-relation queries the response was YES. [2024-06-28 02:22:15,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2124 conditions, 416 events. 232/416 cut-off events. For 4449/4449 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1532 event pairs, 53 based on Foata normal form. 3/417 useless extension candidates. Maximal degree in co-relation 2088. Up to 335 conditions per place. [2024-06-28 02:22:15,259 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 50 selfloop transitions, 23 changer transitions 0/75 dead transitions. [2024-06-28 02:22:15,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 676 flow [2024-06-28 02:22:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:22:15,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 02:22:15,260 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 466 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:22:15,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 676 flow [2024-06-28 02:22:15,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 623 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:15,266 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 497 flow [2024-06-28 02:22:15,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-28 02:22:15,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-28 02:22:15,266 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 497 flow [2024-06-28 02:22:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:15,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:15,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:22:15,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:15,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1173559012, now seen corresponding path program 2 times [2024-06-28 02:22:15,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:15,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477642266] [2024-06-28 02:22:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:15,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477642266] [2024-06-28 02:22:15,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477642266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:15,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330364829] [2024-06-28 02:22:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:15,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:15,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:15,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:15,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:15,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:15,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:15,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:15,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:15,931 INFO L124 PetriNetUnfolderBase]: 238/426 cut-off events. [2024-06-28 02:22:15,931 INFO L125 PetriNetUnfolderBase]: For 4968/4968 co-relation queries the response was YES. [2024-06-28 02:22:15,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 426 events. 238/426 cut-off events. For 4968/4968 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1559 event pairs, 53 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 2224. Up to 339 conditions per place. [2024-06-28 02:22:15,934 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2024-06-28 02:22:15,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 705 flow [2024-06-28 02:22:15,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 02:22:15,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 02:22:15,936 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 497 flow. Second operand 7 states and 81 transitions. [2024-06-28 02:22:15,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 705 flow [2024-06-28 02:22:15,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 643 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:15,941 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 515 flow [2024-06-28 02:22:15,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-28 02:22:15,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 02:22:15,942 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 515 flow [2024-06-28 02:22:15,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:15,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:15,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:22:15,943 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:15,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash 415063925, now seen corresponding path program 2 times [2024-06-28 02:22:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:15,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026875474] [2024-06-28 02:22:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026875474] [2024-06-28 02:22:16,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026875474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:16,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:16,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:16,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792582430] [2024-06-28 02:22:16,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:16,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:16,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:16,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:16,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 515 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:16,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:16,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:16,718 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-28 02:22:16,718 INFO L125 PetriNetUnfolderBase]: For 5511/5514 co-relation queries the response was YES. [2024-06-28 02:22:16,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 432 events. 241/432 cut-off events. For 5511/5514 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1583 event pairs, 59 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2304. Up to 345 conditions per place. [2024-06-28 02:22:16,721 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 45 selfloop transitions, 29 changer transitions 0/76 dead transitions. [2024-06-28 02:22:16,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 741 flow [2024-06-28 02:22:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:22:16,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:22:16,722 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 515 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:22:16,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 741 flow [2024-06-28 02:22:16,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 679 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:16,728 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 540 flow [2024-06-28 02:22:16,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=540, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-28 02:22:16,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-28 02:22:16,729 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 540 flow [2024-06-28 02:22:16,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:16,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:16,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:22:16,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:16,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash 460851450, now seen corresponding path program 3 times [2024-06-28 02:22:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:16,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683592701] [2024-06-28 02:22:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:17,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:17,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683592701] [2024-06-28 02:22:17,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683592701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:17,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:17,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:22:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981429038] [2024-06-28 02:22:17,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:17,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:22:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:22:17,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:22:17,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:17,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:17,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:17,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:17,416 INFO L124 PetriNetUnfolderBase]: 242/435 cut-off events. [2024-06-28 02:22:17,417 INFO L125 PetriNetUnfolderBase]: For 6238/6238 co-relation queries the response was YES. [2024-06-28 02:22:17,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 435 events. 242/435 cut-off events. For 6238/6238 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1623 event pairs, 55 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2353. Up to 326 conditions per place. [2024-06-28 02:22:17,420 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 29 changer transitions 0/84 dead transitions. [2024-06-28 02:22:17,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 858 flow [2024-06-28 02:22:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 02:22:17,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 02:22:17,422 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 540 flow. Second operand 8 states and 89 transitions. [2024-06-28 02:22:17,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 858 flow [2024-06-28 02:22:17,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 84 transitions, 785 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:17,428 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 608 flow [2024-06-28 02:22:17,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=608, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-06-28 02:22:17,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-28 02:22:17,429 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 608 flow [2024-06-28 02:22:17,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:17,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:17,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:22:17,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:17,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 407712275, now seen corresponding path program 3 times [2024-06-28 02:22:17,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741616959] [2024-06-28 02:22:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:18,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:18,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741616959] [2024-06-28 02:22:18,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741616959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:18,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:18,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:18,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740144229] [2024-06-28 02:22:18,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:18,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:18,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:18,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:18,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:18,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 608 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:18,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:18,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:18,256 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2024-06-28 02:22:18,257 INFO L125 PetriNetUnfolderBase]: For 6772/6775 co-relation queries the response was YES. [2024-06-28 02:22:18,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 439 events. 245/439 cut-off events. For 6772/6775 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1606 event pairs, 62 based on Foata normal form. 1/437 useless extension candidates. Maximal degree in co-relation 2445. Up to 371 conditions per place. [2024-06-28 02:22:18,260 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 22 changer transitions 0/81 dead transitions. [2024-06-28 02:22:18,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 81 transitions, 806 flow [2024-06-28 02:22:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 02:22:18,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 02:22:18,261 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 608 flow. Second operand 8 states and 86 transitions. [2024-06-28 02:22:18,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 81 transitions, 806 flow [2024-06-28 02:22:18,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 771 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:18,268 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 650 flow [2024-06-28 02:22:18,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=650, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-06-28 02:22:18,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 02:22:18,269 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 650 flow [2024-06-28 02:22:18,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:18,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:22:18,270 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:18,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2134863833, now seen corresponding path program 4 times [2024-06-28 02:22:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:18,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737484261] [2024-06-28 02:22:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:18,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:18,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737484261] [2024-06-28 02:22:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737484261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715750190] [2024-06-28 02:22:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:18,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:18,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:18,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:18,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:19,045 INFO L124 PetriNetUnfolderBase]: 243/434 cut-off events. [2024-06-28 02:22:19,045 INFO L125 PetriNetUnfolderBase]: For 7033/7033 co-relation queries the response was YES. [2024-06-28 02:22:19,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2501 conditions, 434 events. 243/434 cut-off events. For 7033/7033 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1593 event pairs, 48 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2457. Up to 414 conditions per place. [2024-06-28 02:22:19,048 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 70 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-28 02:22:19,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 84 transitions, 863 flow [2024-06-28 02:22:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-28 02:22:19,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-28 02:22:19,050 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 650 flow. Second operand 8 states and 79 transitions. [2024-06-28 02:22:19,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 84 transitions, 863 flow [2024-06-28 02:22:19,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 802 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:19,057 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 650 flow [2024-06-28 02:22:19,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=650, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-06-28 02:22:19,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-28 02:22:19,057 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 650 flow [2024-06-28 02:22:19,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:19,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:19,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:19,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:22:19,058 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:19,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash 2134873753, now seen corresponding path program 1 times [2024-06-28 02:22:19,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:19,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20186856] [2024-06-28 02:22:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:19,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:20,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:20,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20186856] [2024-06-28 02:22:20,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20186856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:20,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:20,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:20,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405950999] [2024-06-28 02:22:20,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:20,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:20,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:20,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:20,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:20,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:20,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 650 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:20,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:20,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:20,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:20,940 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2024-06-28 02:22:20,940 INFO L125 PetriNetUnfolderBase]: For 7537/7537 co-relation queries the response was YES. [2024-06-28 02:22:20,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 431 events. 241/431 cut-off events. For 7537/7537 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1583 event pairs, 47 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 2447. Up to 408 conditions per place. [2024-06-28 02:22:20,943 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-28 02:22:20,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 87 transitions, 857 flow [2024-06-28 02:22:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 02:22:20,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 02:22:20,944 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 650 flow. Second operand 9 states and 87 transitions. [2024-06-28 02:22:20,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 87 transitions, 857 flow [2024-06-28 02:22:20,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 812 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:20,953 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 656 flow [2024-06-28 02:22:20,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-28 02:22:20,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 02:22:20,953 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 656 flow [2024-06-28 02:22:20,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:20,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:20,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:20,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:22:20,954 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:20,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash -714559439, now seen corresponding path program 1 times [2024-06-28 02:22:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397772046] [2024-06-28 02:22:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:21,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397772046] [2024-06-28 02:22:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397772046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:21,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:21,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176061102] [2024-06-28 02:22:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:21,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:21,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:21,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:21,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:21,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:22,038 INFO L124 PetriNetUnfolderBase]: 288/520 cut-off events. [2024-06-28 02:22:22,038 INFO L125 PetriNetUnfolderBase]: For 8886/8886 co-relation queries the response was YES. [2024-06-28 02:22:22,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 520 events. 288/520 cut-off events. For 8886/8886 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2079 event pairs, 57 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2892. Up to 395 conditions per place. [2024-06-28 02:22:22,042 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 83 selfloop transitions, 24 changer transitions 0/109 dead transitions. [2024-06-28 02:22:22,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 109 transitions, 1110 flow [2024-06-28 02:22:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:22:22,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 02:22:22,044 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 656 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:22:22,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 109 transitions, 1110 flow [2024-06-28 02:22:22,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 1073 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:22,057 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 793 flow [2024-06-28 02:22:22,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2024-06-28 02:22:22,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 02:22:22,057 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 793 flow [2024-06-28 02:22:22,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:22,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:22,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:22:22,058 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:22,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1277739223, now seen corresponding path program 2 times [2024-06-28 02:22:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:22,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180932704] [2024-06-28 02:22:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:22,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180932704] [2024-06-28 02:22:22,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180932704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:22,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:22,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543770056] [2024-06-28 02:22:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:22,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:22,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:22:22,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 793 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:22,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:22:22,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:22,693 INFO L124 PetriNetUnfolderBase]: 284/516 cut-off events. [2024-06-28 02:22:22,694 INFO L125 PetriNetUnfolderBase]: For 9919/9928 co-relation queries the response was YES. [2024-06-28 02:22:22,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 516 events. 284/516 cut-off events. For 9919/9928 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2101 event pairs, 49 based on Foata normal form. 4/511 useless extension candidates. Maximal degree in co-relation 2972. Up to 346 conditions per place. [2024-06-28 02:22:22,700 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 63 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-06-28 02:22:22,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 1039 flow [2024-06-28 02:22:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 02:22:22,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 02:22:22,701 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 793 flow. Second operand 6 states and 71 transitions. [2024-06-28 02:22:22,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 1039 flow [2024-06-28 02:22:22,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 98 transitions, 1013 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:22,713 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 831 flow [2024-06-28 02:22:22,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=831, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-06-28 02:22:22,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-28 02:22:22,714 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 831 flow [2024-06-28 02:22:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:22,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:22:22,715 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:22,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash -886308487, now seen corresponding path program 1 times [2024-06-28 02:22:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:22,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941464720] [2024-06-28 02:22:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:23,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:23,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941464720] [2024-06-28 02:22:23,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941464720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:23,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:23,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103400131] [2024-06-28 02:22:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:23,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:23,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:23,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 831 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:23,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:23,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:23,601 INFO L124 PetriNetUnfolderBase]: 304/548 cut-off events. [2024-06-28 02:22:23,601 INFO L125 PetriNetUnfolderBase]: For 10392/10392 co-relation queries the response was YES. [2024-06-28 02:22:23,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3305 conditions, 548 events. 304/548 cut-off events. For 10392/10392 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2240 event pairs, 48 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 3254. Up to 444 conditions per place. [2024-06-28 02:22:23,605 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 30 changer transitions 0/114 dead transitions. [2024-06-28 02:22:23,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 114 transitions, 1202 flow [2024-06-28 02:22:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:22:23,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 02:22:23,606 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 831 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:22:23,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 114 transitions, 1202 flow [2024-06-28 02:22:23,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 114 transitions, 1157 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:23,619 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 999 flow [2024-06-28 02:22:23,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=999, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2024-06-28 02:22:23,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-28 02:22:23,620 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 999 flow [2024-06-28 02:22:23,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:23,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:23,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:22:23,621 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:23,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:23,621 INFO L85 PathProgramCache]: Analyzing trace with hash -991782559, now seen corresponding path program 3 times [2024-06-28 02:22:23,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:23,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613377300] [2024-06-28 02:22:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:23,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613377300] [2024-06-28 02:22:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613377300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:24,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:24,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:24,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623781493] [2024-06-28 02:22:24,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:24,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:24,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:24,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:22:24,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 999 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:24,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:24,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:22:24,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:24,276 INFO L124 PetriNetUnfolderBase]: 290/527 cut-off events. [2024-06-28 02:22:24,277 INFO L125 PetriNetUnfolderBase]: For 10416/10425 co-relation queries the response was YES. [2024-06-28 02:22:24,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 527 events. 290/527 cut-off events. For 10416/10425 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2144 event pairs, 61 based on Foata normal form. 6/526 useless extension candidates. Maximal degree in co-relation 3153. Up to 418 conditions per place. [2024-06-28 02:22:24,280 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 67 selfloop transitions, 29 changer transitions 0/106 dead transitions. [2024-06-28 02:22:24,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 1205 flow [2024-06-28 02:22:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-28 02:22:24,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 02:22:24,285 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 999 flow. Second operand 6 states and 73 transitions. [2024-06-28 02:22:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 1205 flow [2024-06-28 02:22:24,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 1157 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:24,297 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 1015 flow [2024-06-28 02:22:24,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1015, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-06-28 02:22:24,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 02:22:24,298 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 1015 flow [2024-06-28 02:22:24,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:24,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:24,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:24,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:22:24,300 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:24,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:24,301 INFO L85 PathProgramCache]: Analyzing trace with hash -738182351, now seen corresponding path program 2 times [2024-06-28 02:22:24,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:24,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195412227] [2024-06-28 02:22:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:24,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:24,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:24,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195412227] [2024-06-28 02:22:24,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195412227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:24,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:24,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643097576] [2024-06-28 02:22:24,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:24,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:24,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:25,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:25,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 1015 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:25,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:25,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:25,260 INFO L124 PetriNetUnfolderBase]: 315/567 cut-off events. [2024-06-28 02:22:25,260 INFO L125 PetriNetUnfolderBase]: For 10581/10581 co-relation queries the response was YES. [2024-06-28 02:22:25,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 567 events. 315/567 cut-off events. For 10581/10581 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2333 event pairs, 49 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 3384. Up to 455 conditions per place. [2024-06-28 02:22:25,265 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 30 changer transitions 0/123 dead transitions. [2024-06-28 02:22:25,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 123 transitions, 1407 flow [2024-06-28 02:22:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:22:25,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 02:22:25,273 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 1015 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:22:25,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 123 transitions, 1407 flow [2024-06-28 02:22:25,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 123 transitions, 1331 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:25,286 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 1136 flow [2024-06-28 02:22:25,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1136, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2024-06-28 02:22:25,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 02:22:25,287 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 1136 flow [2024-06-28 02:22:25,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:25,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:22:25,287 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:25,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1034048447, now seen corresponding path program 1 times [2024-06-28 02:22:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:25,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748537399] [2024-06-28 02:22:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:25,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748537399] [2024-06-28 02:22:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748537399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:25,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:25,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896119372] [2024-06-28 02:22:25,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:25,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:25,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:25,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:25,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:25,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 1136 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:25,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:25,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:26,145 INFO L124 PetriNetUnfolderBase]: 321/578 cut-off events. [2024-06-28 02:22:26,146 INFO L125 PetriNetUnfolderBase]: For 11833/11833 co-relation queries the response was YES. [2024-06-28 02:22:26,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 578 events. 321/578 cut-off events. For 11833/11833 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2418 event pairs, 54 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3503. Up to 460 conditions per place. [2024-06-28 02:22:26,150 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 92 selfloop transitions, 34 changer transitions 0/128 dead transitions. [2024-06-28 02:22:26,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 128 transitions, 1484 flow [2024-06-28 02:22:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:22:26,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 02:22:26,152 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 1136 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:22:26,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 128 transitions, 1484 flow [2024-06-28 02:22:26,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 128 transitions, 1427 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:26,168 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 1219 flow [2024-06-28 02:22:26,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1219, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-06-28 02:22:26,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 02:22:26,169 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 1219 flow [2024-06-28 02:22:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:26,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:26,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:26,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:22:26,170 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:26,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1033868709, now seen corresponding path program 1 times [2024-06-28 02:22:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:26,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080543253] [2024-06-28 02:22:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:26,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:27,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080543253] [2024-06-28 02:22:27,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080543253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:27,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:27,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:27,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446912906] [2024-06-28 02:22:27,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:27,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:27,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:27,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:27,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:27,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:27,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:27,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:27,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:27,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:27,427 INFO L124 PetriNetUnfolderBase]: 339/608 cut-off events. [2024-06-28 02:22:27,427 INFO L125 PetriNetUnfolderBase]: For 13147/13147 co-relation queries the response was YES. [2024-06-28 02:22:27,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3775 conditions, 608 events. 339/608 cut-off events. For 13147/13147 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2559 event pairs, 55 based on Foata normal form. 3/608 useless extension candidates. Maximal degree in co-relation 3716. Up to 473 conditions per place. [2024-06-28 02:22:27,431 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 93 selfloop transitions, 40 changer transitions 0/135 dead transitions. [2024-06-28 02:22:27,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 135 transitions, 1583 flow [2024-06-28 02:22:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:22:27,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 02:22:27,432 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 1219 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:22:27,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 135 transitions, 1583 flow [2024-06-28 02:22:27,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 135 transitions, 1522 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:27,448 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 1310 flow [2024-06-28 02:22:27,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1310, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2024-06-28 02:22:27,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-28 02:22:27,449 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 1310 flow [2024-06-28 02:22:27,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:27,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:27,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:27,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:22:27,449 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:27,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:27,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1394042147, now seen corresponding path program 2 times [2024-06-28 02:22:27,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:27,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959278306] [2024-06-28 02:22:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:27,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959278306] [2024-06-28 02:22:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959278306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:27,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:27,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:27,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841748858] [2024-06-28 02:22:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:27,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:27,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:27,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:28,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:28,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 1310 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:28,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:28,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:28,265 INFO L124 PetriNetUnfolderBase]: 361/644 cut-off events. [2024-06-28 02:22:28,265 INFO L125 PetriNetUnfolderBase]: For 14644/14644 co-relation queries the response was YES. [2024-06-28 02:22:28,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 644 events. 361/644 cut-off events. For 14644/14644 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2757 event pairs, 55 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4076. Up to 483 conditions per place. [2024-06-28 02:22:28,269 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 42 changer transitions 0/141 dead transitions. [2024-06-28 02:22:28,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 141 transitions, 1762 flow [2024-06-28 02:22:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:22:28,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 02:22:28,271 INFO L175 Difference]: Start difference. First operand has 126 places, 120 transitions, 1310 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:22:28,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 141 transitions, 1762 flow [2024-06-28 02:22:28,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 141 transitions, 1676 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:28,292 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 1401 flow [2024-06-28 02:22:28,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1401, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2024-06-28 02:22:28,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-28 02:22:28,293 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 1401 flow [2024-06-28 02:22:28,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:28,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:28,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:22:28,293 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:28,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1033875467, now seen corresponding path program 3 times [2024-06-28 02:22:28,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:28,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729130658] [2024-06-28 02:22:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:28,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:28,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:28,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729130658] [2024-06-28 02:22:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729130658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:28,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:28,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:28,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669663751] [2024-06-28 02:22:28,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:28,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:28,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:28,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:28,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 1401 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:28,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:28,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:29,174 INFO L124 PetriNetUnfolderBase]: 357/638 cut-off events. [2024-06-28 02:22:29,174 INFO L125 PetriNetUnfolderBase]: For 15005/15005 co-relation queries the response was YES. [2024-06-28 02:22:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4141 conditions, 638 events. 357/638 cut-off events. For 15005/15005 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2738 event pairs, 55 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4078. Up to 505 conditions per place. [2024-06-28 02:22:29,178 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 36 changer transitions 0/140 dead transitions. [2024-06-28 02:22:29,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 140 transitions, 1723 flow [2024-06-28 02:22:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:22:29,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 02:22:29,180 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 1401 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:22:29,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 140 transitions, 1723 flow [2024-06-28 02:22:29,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 140 transitions, 1642 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:29,203 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1397 flow [2024-06-28 02:22:29,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1397, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2024-06-28 02:22:29,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 02:22:29,204 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1397 flow [2024-06-28 02:22:29,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:29,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:29,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:22:29,205 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:29,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1268498925, now seen corresponding path program 3 times [2024-06-28 02:22:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:29,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821556018] [2024-06-28 02:22:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:29,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821556018] [2024-06-28 02:22:29,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821556018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:29,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:29,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:29,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749426575] [2024-06-28 02:22:29,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:29,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:29,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:29,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:29,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:29,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 1397 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:29,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:29,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:30,170 INFO L124 PetriNetUnfolderBase]: 355/633 cut-off events. [2024-06-28 02:22:30,171 INFO L125 PetriNetUnfolderBase]: For 14770/14770 co-relation queries the response was YES. [2024-06-28 02:22:30,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 633 events. 355/633 cut-off events. For 14770/14770 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2676 event pairs, 54 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 4072. Up to 507 conditions per place. [2024-06-28 02:22:30,175 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 92 selfloop transitions, 41 changer transitions 0/135 dead transitions. [2024-06-28 02:22:30,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1689 flow [2024-06-28 02:22:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 02:22:30,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-28 02:22:30,176 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1397 flow. Second operand 7 states and 82 transitions. [2024-06-28 02:22:30,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1689 flow [2024-06-28 02:22:30,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 1597 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:30,200 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 1403 flow [2024-06-28 02:22:30,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1403, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2024-06-28 02:22:30,200 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-28 02:22:30,200 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 1403 flow [2024-06-28 02:22:30,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:30,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:30,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:22:30,201 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:30,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2020767277, now seen corresponding path program 4 times [2024-06-28 02:22:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:30,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301145004] [2024-06-28 02:22:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:30,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301145004] [2024-06-28 02:22:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301145004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:30,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:30,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:30,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608182546] [2024-06-28 02:22:30,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:30,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:30,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:30,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:30,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:30,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 126 transitions, 1403 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:30,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:30,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:30,987 INFO L124 PetriNetUnfolderBase]: 353/633 cut-off events. [2024-06-28 02:22:30,987 INFO L125 PetriNetUnfolderBase]: For 15341/15341 co-relation queries the response was YES. [2024-06-28 02:22:30,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 633 events. 353/633 cut-off events. For 15341/15341 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2704 event pairs, 68 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 4054. Up to 510 conditions per place. [2024-06-28 02:22:30,992 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 96 selfloop transitions, 40 changer transitions 0/138 dead transitions. [2024-06-28 02:22:30,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 138 transitions, 1723 flow [2024-06-28 02:22:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 02:22:30,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:22:30,993 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 1403 flow. Second operand 7 states and 84 transitions. [2024-06-28 02:22:30,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 138 transitions, 1723 flow [2024-06-28 02:22:31,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1627 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:31,019 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 1401 flow [2024-06-28 02:22:31,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1401, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2024-06-28 02:22:31,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 02:22:31,020 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 1401 flow [2024-06-28 02:22:31,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:31,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:31,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:22:31,021 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:31,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1305949757, now seen corresponding path program 4 times [2024-06-28 02:22:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:31,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122441300] [2024-06-28 02:22:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122441300] [2024-06-28 02:22:31,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122441300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:31,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144193993] [2024-06-28 02:22:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:31,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:31,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 1401 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:31,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:31,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:31,767 INFO L124 PetriNetUnfolderBase]: 359/642 cut-off events. [2024-06-28 02:22:31,767 INFO L125 PetriNetUnfolderBase]: For 16056/16056 co-relation queries the response was YES. [2024-06-28 02:22:31,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 642 events. 359/642 cut-off events. For 16056/16056 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2745 event pairs, 53 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 4129. Up to 475 conditions per place. [2024-06-28 02:22:31,771 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 46 changer transitions 0/140 dead transitions. [2024-06-28 02:22:31,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 140 transitions, 1751 flow [2024-06-28 02:22:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:22:31,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:22:31,781 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 1401 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:22:31,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 140 transitions, 1751 flow [2024-06-28 02:22:31,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 140 transitions, 1586 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:31,809 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 1374 flow [2024-06-28 02:22:31,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1374, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2024-06-28 02:22:31,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 02:22:31,810 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 1374 flow [2024-06-28 02:22:31,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:31,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:31,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:22:31,811 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:31,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:31,811 INFO L85 PathProgramCache]: Analyzing trace with hash 473400293, now seen corresponding path program 5 times [2024-06-28 02:22:31,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:31,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153460110] [2024-06-28 02:22:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:32,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153460110] [2024-06-28 02:22:32,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153460110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:32,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:32,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708833447] [2024-06-28 02:22:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:32,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:32,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:32,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 1374 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:32,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:32,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:32,562 INFO L124 PetriNetUnfolderBase]: 365/652 cut-off events. [2024-06-28 02:22:32,563 INFO L125 PetriNetUnfolderBase]: For 16016/16016 co-relation queries the response was YES. [2024-06-28 02:22:32,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 652 events. 365/652 cut-off events. For 16016/16016 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2814 event pairs, 60 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 4142. Up to 520 conditions per place. [2024-06-28 02:22:32,567 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 42 changer transitions 0/144 dead transitions. [2024-06-28 02:22:32,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 144 transitions, 1752 flow [2024-06-28 02:22:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 02:22:32,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 02:22:32,569 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 1374 flow. Second operand 8 states and 92 transitions. [2024-06-28 02:22:32,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 144 transitions, 1752 flow [2024-06-28 02:22:32,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 144 transitions, 1635 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:32,594 INFO L231 Difference]: Finished difference. Result has 138 places, 130 transitions, 1391 flow [2024-06-28 02:22:32,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1391, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2024-06-28 02:22:32,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 02:22:32,595 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 1391 flow [2024-06-28 02:22:32,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:32,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:32,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:22:32,596 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:32,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1305956515, now seen corresponding path program 2 times [2024-06-28 02:22:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:32,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81584387] [2024-06-28 02:22:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81584387] [2024-06-28 02:22:33,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81584387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:33,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:33,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322299702] [2024-06-28 02:22:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:33,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:33,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:33,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 1391 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:33,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:33,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:33,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:33,851 INFO L124 PetriNetUnfolderBase]: 374/667 cut-off events. [2024-06-28 02:22:33,851 INFO L125 PetriNetUnfolderBase]: For 16566/16566 co-relation queries the response was YES. [2024-06-28 02:22:33,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 667 events. 374/667 cut-off events. For 16566/16566 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2882 event pairs, 59 based on Foata normal form. 3/667 useless extension candidates. Maximal degree in co-relation 4215. Up to 501 conditions per place. [2024-06-28 02:22:33,856 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 93 selfloop transitions, 51 changer transitions 0/146 dead transitions. [2024-06-28 02:22:33,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 146 transitions, 1771 flow [2024-06-28 02:22:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:22:33,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 02:22:33,865 INFO L175 Difference]: Start difference. First operand has 138 places, 130 transitions, 1391 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:22:33,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 146 transitions, 1771 flow [2024-06-28 02:22:33,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 146 transitions, 1659 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:33,892 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 1447 flow [2024-06-28 02:22:33,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1447, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-06-28 02:22:33,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 02:22:33,893 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1447 flow [2024-06-28 02:22:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:33,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:33,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:33,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:22:33,894 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:33,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash 473579783, now seen corresponding path program 6 times [2024-06-28 02:22:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:33,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802636704] [2024-06-28 02:22:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802636704] [2024-06-28 02:22:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802636704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568759220] [2024-06-28 02:22:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:34,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:34,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:34,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:34,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1447 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:34,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:34,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:34,786 INFO L124 PetriNetUnfolderBase]: 380/677 cut-off events. [2024-06-28 02:22:34,786 INFO L125 PetriNetUnfolderBase]: For 16268/16268 co-relation queries the response was YES. [2024-06-28 02:22:34,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4391 conditions, 677 events. 380/677 cut-off events. For 16268/16268 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2949 event pairs, 53 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 4324. Up to 455 conditions per place. [2024-06-28 02:22:34,790 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 59 changer transitions 0/147 dead transitions. [2024-06-28 02:22:34,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 147 transitions, 1817 flow [2024-06-28 02:22:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:22:34,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 02:22:34,791 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 1447 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:22:34,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 147 transitions, 1817 flow [2024-06-28 02:22:34,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 147 transitions, 1670 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:34,818 INFO L231 Difference]: Finished difference. Result has 141 places, 135 transitions, 1471 flow [2024-06-28 02:22:34,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1471, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2024-06-28 02:22:34,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 02:22:34,819 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 1471 flow [2024-06-28 02:22:34,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:34,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:34,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:34,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:22:34,820 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:34,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1425807907, now seen corresponding path program 3 times [2024-06-28 02:22:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722367911] [2024-06-28 02:22:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:34,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:35,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:35,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722367911] [2024-06-28 02:22:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722367911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:35,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:35,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:35,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240404188] [2024-06-28 02:22:35,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:35,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:35,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:35,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:35,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 1471 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:35,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:35,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:35,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,068 INFO L124 PetriNetUnfolderBase]: 383/680 cut-off events. [2024-06-28 02:22:36,068 INFO L125 PetriNetUnfolderBase]: For 15590/15590 co-relation queries the response was YES. [2024-06-28 02:22:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 680 events. 383/680 cut-off events. For 15590/15590 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2935 event pairs, 76 based on Foata normal form. 1/678 useless extension candidates. Maximal degree in co-relation 4339. Up to 569 conditions per place. [2024-06-28 02:22:36,072 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 37 changer transitions 0/145 dead transitions. [2024-06-28 02:22:36,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 145 transitions, 1803 flow [2024-06-28 02:22:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 02:22:36,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-28 02:22:36,073 INFO L175 Difference]: Start difference. First operand has 141 places, 135 transitions, 1471 flow. Second operand 9 states and 94 transitions. [2024-06-28 02:22:36,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 145 transitions, 1803 flow [2024-06-28 02:22:36,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 145 transitions, 1657 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:36,100 INFO L231 Difference]: Finished difference. Result has 143 places, 137 transitions, 1436 flow [2024-06-28 02:22:36,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1436, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2024-06-28 02:22:36,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 02:22:36,101 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 1436 flow [2024-06-28 02:22:36,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:36,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:36,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:22:36,101 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:36,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1401494605, now seen corresponding path program 7 times [2024-06-28 02:22:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:36,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501826813] [2024-06-28 02:22:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:36,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501826813] [2024-06-28 02:22:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501826813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:36,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:36,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117368018] [2024-06-28 02:22:36,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:36,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:36,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:36,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 1436 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:36,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:36,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:36,864 INFO L124 PetriNetUnfolderBase]: 389/690 cut-off events. [2024-06-28 02:22:36,864 INFO L125 PetriNetUnfolderBase]: For 16022/16022 co-relation queries the response was YES. [2024-06-28 02:22:36,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 690 events. 389/690 cut-off events. For 16022/16022 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3000 event pairs, 68 based on Foata normal form. 2/689 useless extension candidates. Maximal degree in co-relation 4316. Up to 509 conditions per place. [2024-06-28 02:22:36,888 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 100 selfloop transitions, 47 changer transitions 0/149 dead transitions. [2024-06-28 02:22:36,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 149 transitions, 1806 flow [2024-06-28 02:22:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 02:22:36,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:22:36,891 INFO L175 Difference]: Start difference. First operand has 143 places, 137 transitions, 1436 flow. Second operand 8 states and 88 transitions. [2024-06-28 02:22:36,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 149 transitions, 1806 flow [2024-06-28 02:22:36,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 149 transitions, 1711 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:36,915 INFO L231 Difference]: Finished difference. Result has 144 places, 139 transitions, 1486 flow [2024-06-28 02:22:36,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1486, PETRI_PLACES=144, PETRI_TRANSITIONS=139} [2024-06-28 02:22:36,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-28 02:22:36,916 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 139 transitions, 1486 flow [2024-06-28 02:22:36,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:36,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:36,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:22:36,916 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:36,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash -17918887, now seen corresponding path program 8 times [2024-06-28 02:22:36,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:36,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180703009] [2024-06-28 02:22:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180703009] [2024-06-28 02:22:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180703009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:37,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865965122] [2024-06-28 02:22:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:37,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:37,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:37,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 139 transitions, 1486 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:37,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:37,781 INFO L124 PetriNetUnfolderBase]: 395/700 cut-off events. [2024-06-28 02:22:37,781 INFO L125 PetriNetUnfolderBase]: For 17322/17322 co-relation queries the response was YES. [2024-06-28 02:22:37,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4549 conditions, 700 events. 395/700 cut-off events. For 17322/17322 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3051 event pairs, 68 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4481. Up to 510 conditions per place. [2024-06-28 02:22:37,785 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 100 selfloop transitions, 50 changer transitions 0/152 dead transitions. [2024-06-28 02:22:37,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 152 transitions, 1872 flow [2024-06-28 02:22:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:22:37,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 02:22:37,786 INFO L175 Difference]: Start difference. First operand has 144 places, 139 transitions, 1486 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:22:37,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 152 transitions, 1872 flow [2024-06-28 02:22:37,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 152 transitions, 1743 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:37,814 INFO L231 Difference]: Finished difference. Result has 146 places, 141 transitions, 1512 flow [2024-06-28 02:22:37,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1512, PETRI_PLACES=146, PETRI_TRANSITIONS=141} [2024-06-28 02:22:37,814 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-28 02:22:37,815 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 141 transitions, 1512 flow [2024-06-28 02:22:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:37,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:37,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:37,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:22:37,815 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:37,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash -9347759, now seen corresponding path program 4 times [2024-06-28 02:22:37,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:37,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688954930] [2024-06-28 02:22:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688954930] [2024-06-28 02:22:38,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688954930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:38,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381961648] [2024-06-28 02:22:38,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:38,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:38,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:38,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:38,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 141 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:38,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:38,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,765 INFO L124 PetriNetUnfolderBase]: 406/718 cut-off events. [2024-06-28 02:22:38,765 INFO L125 PetriNetUnfolderBase]: For 18888/18888 co-relation queries the response was YES. [2024-06-28 02:22:38,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4723 conditions, 718 events. 406/718 cut-off events. For 18888/18888 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3117 event pairs, 125 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 4654. Up to 683 conditions per place. [2024-06-28 02:22:38,769 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2024-06-28 02:22:38,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 1970 flow [2024-06-28 02:22:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-28 02:22:38,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-28 02:22:38,770 INFO L175 Difference]: Start difference. First operand has 146 places, 141 transitions, 1512 flow. Second operand 10 states and 98 transitions. [2024-06-28 02:22:38,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 156 transitions, 1970 flow [2024-06-28 02:22:38,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 1831 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:38,799 INFO L231 Difference]: Finished difference. Result has 150 places, 146 transitions, 1488 flow [2024-06-28 02:22:38,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1488, PETRI_PLACES=150, PETRI_TRANSITIONS=146} [2024-06-28 02:22:38,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 02:22:38,800 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 146 transitions, 1488 flow [2024-06-28 02:22:38,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:38,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:22:38,801 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:38,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1401501363, now seen corresponding path program 5 times [2024-06-28 02:22:38,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107157620] [2024-06-28 02:22:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107157620] [2024-06-28 02:22:39,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107157620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183252306] [2024-06-28 02:22:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:39,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:39,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:39,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 146 transitions, 1488 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:39,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:39,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,156 INFO L124 PetriNetUnfolderBase]: 409/723 cut-off events. [2024-06-28 02:22:40,157 INFO L125 PetriNetUnfolderBase]: For 18689/18689 co-relation queries the response was YES. [2024-06-28 02:22:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4695 conditions, 723 events. 409/723 cut-off events. For 18689/18689 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3162 event pairs, 70 based on Foata normal form. 1/721 useless extension candidates. Maximal degree in co-relation 4625. Up to 582 conditions per place. [2024-06-28 02:22:40,161 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 50 changer transitions 0/157 dead transitions. [2024-06-28 02:22:40,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 1858 flow [2024-06-28 02:22:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:22:40,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 02:22:40,162 INFO L175 Difference]: Start difference. First operand has 150 places, 146 transitions, 1488 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:22:40,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 1858 flow [2024-06-28 02:22:40,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 157 transitions, 1807 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:40,190 INFO L231 Difference]: Finished difference. Result has 153 places, 148 transitions, 1582 flow [2024-06-28 02:22:40,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2024-06-28 02:22:40,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 02:22:40,191 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 1582 flow [2024-06-28 02:22:40,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:22:40,191 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:40,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1409775325, now seen corresponding path program 9 times [2024-06-28 02:22:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720559530] [2024-06-28 02:22:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720559530] [2024-06-28 02:22:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720559530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:22:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765780002] [2024-06-28 02:22:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:22:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:22:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:22:40,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:40,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 148 transitions, 1582 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:40,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,930 INFO L124 PetriNetUnfolderBase]: 410/725 cut-off events. [2024-06-28 02:22:40,930 INFO L125 PetriNetUnfolderBase]: For 20254/20254 co-relation queries the response was YES. [2024-06-28 02:22:40,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4812 conditions, 725 events. 410/725 cut-off events. For 20254/20254 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3174 event pairs, 126 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 4740. Up to 697 conditions per place. [2024-06-28 02:22:40,935 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 142 selfloop transitions, 14 changer transitions 0/158 dead transitions. [2024-06-28 02:22:40,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 158 transitions, 1966 flow [2024-06-28 02:22:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-28 02:22:40,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-28 02:22:40,936 INFO L175 Difference]: Start difference. First operand has 153 places, 148 transitions, 1582 flow. Second operand 8 states and 81 transitions. [2024-06-28 02:22:40,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 158 transitions, 1966 flow [2024-06-28 02:22:40,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 158 transitions, 1837 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:40,971 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 1540 flow [2024-06-28 02:22:40,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1540, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2024-06-28 02:22:40,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-28 02:22:40,972 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 1540 flow [2024-06-28 02:22:40,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:40,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:22:40,973 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:40,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash -9644429, now seen corresponding path program 6 times [2024-06-28 02:22:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464963306] [2024-06-28 02:22:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464963306] [2024-06-28 02:22:41,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464963306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:41,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289143884] [2024-06-28 02:22:41,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:41,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:41,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:41,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:41,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 1540 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:41,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:41,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:41,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,286 INFO L124 PetriNetUnfolderBase]: 428/754 cut-off events. [2024-06-28 02:22:42,286 INFO L125 PetriNetUnfolderBase]: For 21984/21984 co-relation queries the response was YES. [2024-06-28 02:22:42,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5084 conditions, 754 events. 428/754 cut-off events. For 21984/21984 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3331 event pairs, 70 based on Foata normal form. 1/752 useless extension candidates. Maximal degree in co-relation 5011. Up to 497 conditions per place. [2024-06-28 02:22:42,291 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 93 selfloop transitions, 73 changer transitions 0/168 dead transitions. [2024-06-28 02:22:42,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 168 transitions, 2114 flow [2024-06-28 02:22:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:22:42,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 02:22:42,292 INFO L175 Difference]: Start difference. First operand has 154 places, 150 transitions, 1540 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:22:42,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 168 transitions, 2114 flow [2024-06-28 02:22:42,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 168 transitions, 2043 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:42,324 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 1760 flow [2024-06-28 02:22:42,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1760, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-06-28 02:22:42,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-28 02:22:42,325 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 1760 flow [2024-06-28 02:22:42,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:42,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:22:42,326 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:42,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1756578539, now seen corresponding path program 1 times [2024-06-28 02:22:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239745650] [2024-06-28 02:22:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:43,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:43,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239745650] [2024-06-28 02:22:43,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239745650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:43,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827525393] [2024-06-28 02:22:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:43,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:43,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:43,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 1760 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:43,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:43,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:43,815 INFO L124 PetriNetUnfolderBase]: 425/749 cut-off events. [2024-06-28 02:22:43,815 INFO L125 PetriNetUnfolderBase]: For 22732/22732 co-relation queries the response was YES. [2024-06-28 02:22:43,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5221 conditions, 749 events. 425/749 cut-off events. For 22732/22732 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3268 event pairs, 131 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 5146. Up to 718 conditions per place. [2024-06-28 02:22:43,820 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 147 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-28 02:22:43,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 164 transitions, 2104 flow [2024-06-28 02:22:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 02:22:43,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 02:22:43,822 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 1760 flow. Second operand 9 states and 87 transitions. [2024-06-28 02:22:43,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 164 transitions, 2104 flow [2024-06-28 02:22:43,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 164 transitions, 1969 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:43,861 INFO L231 Difference]: Finished difference. Result has 161 places, 155 transitions, 1659 flow [2024-06-28 02:22:43,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1659, PETRI_PLACES=161, PETRI_TRANSITIONS=155} [2024-06-28 02:22:43,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-28 02:22:43,862 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 155 transitions, 1659 flow [2024-06-28 02:22:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:43,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:43,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:43,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:22:43,863 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:43,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash -51852701, now seen corresponding path program 1 times [2024-06-28 02:22:43,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:43,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905763823] [2024-06-28 02:22:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:43,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905763823] [2024-06-28 02:22:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905763823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:44,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:44,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:44,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339624365] [2024-06-28 02:22:44,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:44,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:44,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:44,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 155 transitions, 1659 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:44,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:44,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:44,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:44,810 INFO L124 PetriNetUnfolderBase]: 438/778 cut-off events. [2024-06-28 02:22:44,810 INFO L125 PetriNetUnfolderBase]: For 23192/23192 co-relation queries the response was YES. [2024-06-28 02:22:44,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 778 events. 438/778 cut-off events. For 23192/23192 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3520 event pairs, 72 based on Foata normal form. 2/779 useless extension candidates. Maximal degree in co-relation 5180. Up to 633 conditions per place. [2024-06-28 02:22:44,815 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 143 selfloop transitions, 28 changer transitions 0/173 dead transitions. [2024-06-28 02:22:44,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 173 transitions, 2067 flow [2024-06-28 02:22:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:22:44,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 02:22:44,816 INFO L175 Difference]: Start difference. First operand has 161 places, 155 transitions, 1659 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:22:44,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 173 transitions, 2067 flow [2024-06-28 02:22:44,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 173 transitions, 2022 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:44,868 INFO L231 Difference]: Finished difference. Result has 164 places, 158 transitions, 1716 flow [2024-06-28 02:22:44,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1716, PETRI_PLACES=164, PETRI_TRANSITIONS=158} [2024-06-28 02:22:44,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-28 02:22:44,869 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 158 transitions, 1716 flow [2024-06-28 02:22:44,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:44,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:44,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:44,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:22:44,870 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:44,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:44,870 INFO L85 PathProgramCache]: Analyzing trace with hash -49975031, now seen corresponding path program 2 times [2024-06-28 02:22:44,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:44,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124458174] [2024-06-28 02:22:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124458174] [2024-06-28 02:22:45,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124458174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993338312] [2024-06-28 02:22:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:45,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:45,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 158 transitions, 1716 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:45,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:45,886 INFO L124 PetriNetUnfolderBase]: 442/786 cut-off events. [2024-06-28 02:22:45,887 INFO L125 PetriNetUnfolderBase]: For 24278/24278 co-relation queries the response was YES. [2024-06-28 02:22:45,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5378 conditions, 786 events. 442/786 cut-off events. For 24278/24278 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3573 event pairs, 73 based on Foata normal form. 2/787 useless extension candidates. Maximal degree in co-relation 5300. Up to 662 conditions per place. [2024-06-28 02:22:45,892 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 135 selfloop transitions, 35 changer transitions 0/172 dead transitions. [2024-06-28 02:22:45,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 172 transitions, 2108 flow [2024-06-28 02:22:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:22:45,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:22:45,893 INFO L175 Difference]: Start difference. First operand has 164 places, 158 transitions, 1716 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:22:45,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 172 transitions, 2108 flow [2024-06-28 02:22:45,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 172 transitions, 2042 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:45,933 INFO L231 Difference]: Finished difference. Result has 168 places, 159 transitions, 1743 flow [2024-06-28 02:22:45,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1743, PETRI_PLACES=168, PETRI_TRANSITIONS=159} [2024-06-28 02:22:45,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 02:22:45,934 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 159 transitions, 1743 flow [2024-06-28 02:22:45,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:45,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:45,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:45,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:22:45,934 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:45,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:45,935 INFO L85 PathProgramCache]: Analyzing trace with hash 302396939, now seen corresponding path program 3 times [2024-06-28 02:22:45,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:45,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439066466] [2024-06-28 02:22:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:45,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:46,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:46,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439066466] [2024-06-28 02:22:46,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439066466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:46,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:46,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:46,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595502449] [2024-06-28 02:22:46,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:46,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:46,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:46,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:46,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:46,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:46,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 159 transitions, 1743 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:46,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:46,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:46,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:46,931 INFO L124 PetriNetUnfolderBase]: 446/794 cut-off events. [2024-06-28 02:22:46,931 INFO L125 PetriNetUnfolderBase]: For 25879/25879 co-relation queries the response was YES. [2024-06-28 02:22:46,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5454 conditions, 794 events. 446/794 cut-off events. For 25879/25879 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3629 event pairs, 79 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 5375. Up to 676 conditions per place. [2024-06-28 02:22:46,936 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 140 selfloop transitions, 31 changer transitions 0/173 dead transitions. [2024-06-28 02:22:46,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 173 transitions, 2135 flow [2024-06-28 02:22:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:22:46,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 02:22:46,938 INFO L175 Difference]: Start difference. First operand has 168 places, 159 transitions, 1743 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:22:46,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 173 transitions, 2135 flow [2024-06-28 02:22:46,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 173 transitions, 2054 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:46,983 INFO L231 Difference]: Finished difference. Result has 170 places, 160 transitions, 1748 flow [2024-06-28 02:22:46,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1748, PETRI_PLACES=170, PETRI_TRANSITIONS=160} [2024-06-28 02:22:46,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-28 02:22:46,983 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 160 transitions, 1748 flow [2024-06-28 02:22:46,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:46,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:46,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:46,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:22:46,984 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:46,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1083475332, now seen corresponding path program 1 times [2024-06-28 02:22:46,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:46,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881231425] [2024-06-28 02:22:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:46,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881231425] [2024-06-28 02:22:47,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881231425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:47,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:47,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:47,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584104637] [2024-06-28 02:22:47,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:47,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:47,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:47,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:47,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 160 transitions, 1748 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:47,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:47,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,942 INFO L124 PetriNetUnfolderBase]: 449/799 cut-off events. [2024-06-28 02:22:47,942 INFO L125 PetriNetUnfolderBase]: For 26377/26377 co-relation queries the response was YES. [2024-06-28 02:22:47,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5522 conditions, 799 events. 449/799 cut-off events. For 26377/26377 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3659 event pairs, 76 based on Foata normal form. 1/799 useless extension candidates. Maximal degree in co-relation 5442. Up to 669 conditions per place. [2024-06-28 02:22:47,948 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 39 changer transitions 0/175 dead transitions. [2024-06-28 02:22:47,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 175 transitions, 2189 flow [2024-06-28 02:22:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:22:47,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 02:22:47,950 INFO L175 Difference]: Start difference. First operand has 170 places, 160 transitions, 1748 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:22:47,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 175 transitions, 2189 flow [2024-06-28 02:22:47,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 175 transitions, 2115 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:47,995 INFO L231 Difference]: Finished difference. Result has 173 places, 162 transitions, 1820 flow [2024-06-28 02:22:47,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1820, PETRI_PLACES=173, PETRI_TRANSITIONS=162} [2024-06-28 02:22:47,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 02:22:47,996 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 162 transitions, 1820 flow [2024-06-28 02:22:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:47,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:47,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:47,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:22:47,996 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:47,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1332761939, now seen corresponding path program 4 times [2024-06-28 02:22:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:47,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360430135] [2024-06-28 02:22:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360430135] [2024-06-28 02:22:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360430135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:48,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:48,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:48,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349159920] [2024-06-28 02:22:48,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:48,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:48,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:48,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:48,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:48,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 162 transitions, 1820 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:48,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:48,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:48,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:48,912 INFO L124 PetriNetUnfolderBase]: 453/807 cut-off events. [2024-06-28 02:22:48,912 INFO L125 PetriNetUnfolderBase]: For 28620/28620 co-relation queries the response was YES. [2024-06-28 02:22:48,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5633 conditions, 807 events. 453/807 cut-off events. For 28620/28620 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3704 event pairs, 52 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 5552. Up to 609 conditions per place. [2024-06-28 02:22:48,918 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 145 selfloop transitions, 31 changer transitions 0/178 dead transitions. [2024-06-28 02:22:48,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 178 transitions, 2228 flow [2024-06-28 02:22:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 02:22:48,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-28 02:22:48,919 INFO L175 Difference]: Start difference. First operand has 173 places, 162 transitions, 1820 flow. Second operand 9 states and 94 transitions. [2024-06-28 02:22:48,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 178 transitions, 2228 flow [2024-06-28 02:22:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 178 transitions, 2117 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:48,979 INFO L231 Difference]: Finished difference. Result has 175 places, 163 transitions, 1797 flow [2024-06-28 02:22:48,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1797, PETRI_PLACES=175, PETRI_TRANSITIONS=163} [2024-06-28 02:22:48,980 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 02:22:48,980 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 163 transitions, 1797 flow [2024-06-28 02:22:48,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:48,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:48,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:22:48,980 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:48,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1990883033, now seen corresponding path program 5 times [2024-06-28 02:22:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332241171] [2024-06-28 02:22:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:49,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:49,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332241171] [2024-06-28 02:22:49,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332241171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:49,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:49,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847308725] [2024-06-28 02:22:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:49,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:49,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:49,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 163 transitions, 1797 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:49,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:49,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:49,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:50,008 INFO L124 PetriNetUnfolderBase]: 462/826 cut-off events. [2024-06-28 02:22:50,008 INFO L125 PetriNetUnfolderBase]: For 30232/30232 co-relation queries the response was YES. [2024-06-28 02:22:50,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 826 events. 462/826 cut-off events. For 30232/30232 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3852 event pairs, 77 based on Foata normal form. 2/827 useless extension candidates. Maximal degree in co-relation 5652. Up to 698 conditions per place. [2024-06-28 02:22:50,015 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 30 changer transitions 0/180 dead transitions. [2024-06-28 02:22:50,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 180 transitions, 2225 flow [2024-06-28 02:22:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:22:50,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 02:22:50,016 INFO L175 Difference]: Start difference. First operand has 175 places, 163 transitions, 1797 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:22:50,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 180 transitions, 2225 flow [2024-06-28 02:22:50,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 180 transitions, 2109 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 02:22:50,069 INFO L231 Difference]: Finished difference. Result has 175 places, 165 transitions, 1784 flow [2024-06-28 02:22:50,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1784, PETRI_PLACES=175, PETRI_TRANSITIONS=165} [2024-06-28 02:22:50,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 02:22:50,069 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 165 transitions, 1784 flow [2024-06-28 02:22:50,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:50,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:50,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:22:50,071 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:50,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1990879313, now seen corresponding path program 6 times [2024-06-28 02:22:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182489146] [2024-06-28 02:22:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:50,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:50,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182489146] [2024-06-28 02:22:50,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182489146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:50,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:50,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:50,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747571076] [2024-06-28 02:22:50,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:50,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:50,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 165 transitions, 1784 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:50,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:50,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:50,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:50,983 INFO L124 PetriNetUnfolderBase]: 473/847 cut-off events. [2024-06-28 02:22:50,984 INFO L125 PetriNetUnfolderBase]: For 31809/31809 co-relation queries the response was YES. [2024-06-28 02:22:50,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 847 events. 473/847 cut-off events. For 31809/31809 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3991 event pairs, 83 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 5734. Up to 720 conditions per place. [2024-06-28 02:22:50,989 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 36 changer transitions 0/184 dead transitions. [2024-06-28 02:22:50,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 184 transitions, 2285 flow [2024-06-28 02:22:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:22:50,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:22:50,990 INFO L175 Difference]: Start difference. First operand has 175 places, 165 transitions, 1784 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:22:50,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 184 transitions, 2285 flow [2024-06-28 02:22:51,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 184 transitions, 2204 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:51,067 INFO L231 Difference]: Finished difference. Result has 178 places, 169 transitions, 1865 flow [2024-06-28 02:22:51,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1865, PETRI_PLACES=178, PETRI_TRANSITIONS=169} [2024-06-28 02:22:51,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 02:22:51,067 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 169 transitions, 1865 flow [2024-06-28 02:22:51,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:51,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:22:51,068 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:51,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1638503468, now seen corresponding path program 2 times [2024-06-28 02:22:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420376067] [2024-06-28 02:22:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:51,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:51,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420376067] [2024-06-28 02:22:51,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420376067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:51,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:51,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:51,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412890965] [2024-06-28 02:22:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:51,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:51,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:51,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:51,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:51,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 169 transitions, 1865 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:51,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:51,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:51,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:52,111 INFO L124 PetriNetUnfolderBase]: 476/852 cut-off events. [2024-06-28 02:22:52,112 INFO L125 PetriNetUnfolderBase]: For 32311/32311 co-relation queries the response was YES. [2024-06-28 02:22:52,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 852 events. 476/852 cut-off events. For 32311/32311 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4015 event pairs, 82 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 5816. Up to 722 conditions per place. [2024-06-28 02:22:52,119 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 39 changer transitions 0/186 dead transitions. [2024-06-28 02:22:52,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 186 transitions, 2349 flow [2024-06-28 02:22:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:22:52,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 02:22:52,120 INFO L175 Difference]: Start difference. First operand has 178 places, 169 transitions, 1865 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:22:52,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 186 transitions, 2349 flow [2024-06-28 02:22:52,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 186 transitions, 2282 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:52,184 INFO L231 Difference]: Finished difference. Result has 182 places, 171 transitions, 1946 flow [2024-06-28 02:22:52,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1946, PETRI_PLACES=182, PETRI_TRANSITIONS=171} [2024-06-28 02:22:52,185 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-28 02:22:52,185 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 171 transitions, 1946 flow [2024-06-28 02:22:52,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:52,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:52,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:22:52,186 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:52,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1985372783, now seen corresponding path program 7 times [2024-06-28 02:22:52,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:52,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431040117] [2024-06-28 02:22:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:52,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:52,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431040117] [2024-06-28 02:22:52,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431040117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:52,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:52,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:52,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848700167] [2024-06-28 02:22:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:52,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:52,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:52,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:52,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 171 transitions, 1946 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:52,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:52,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:52,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:53,107 INFO L124 PetriNetUnfolderBase]: 480/862 cut-off events. [2024-06-28 02:22:53,108 INFO L125 PetriNetUnfolderBase]: For 35154/35154 co-relation queries the response was YES. [2024-06-28 02:22:53,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 862 events. 480/862 cut-off events. For 35154/35154 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4100 event pairs, 79 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 5929. Up to 723 conditions per place. [2024-06-28 02:22:53,114 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 38 changer transitions 0/186 dead transitions. [2024-06-28 02:22:53,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 186 transitions, 2382 flow [2024-06-28 02:22:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:22:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:22:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:22:53,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 02:22:53,115 INFO L175 Difference]: Start difference. First operand has 182 places, 171 transitions, 1946 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:22:53,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 186 transitions, 2382 flow [2024-06-28 02:22:53,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 186 transitions, 2264 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:53,170 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1936 flow [2024-06-28 02:22:53,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1936, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-28 02:22:53,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 02:22:53,171 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1936 flow [2024-06-28 02:22:53,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:53,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:53,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:53,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:22:53,172 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:53,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:53,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1990729211, now seen corresponding path program 1 times [2024-06-28 02:22:53,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:53,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035125171] [2024-06-28 02:22:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:53,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:53,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:53,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035125171] [2024-06-28 02:22:53,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035125171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:53,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:53,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:53,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112144870] [2024-06-28 02:22:53,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:53,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:53,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:53,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1936 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:53,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:53,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:53,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:54,303 INFO L124 PetriNetUnfolderBase]: 486/872 cut-off events. [2024-06-28 02:22:54,303 INFO L125 PetriNetUnfolderBase]: For 36919/36919 co-relation queries the response was YES. [2024-06-28 02:22:54,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6096 conditions, 872 events. 486/872 cut-off events. For 36919/36919 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4150 event pairs, 81 based on Foata normal form. 2/870 useless extension candidates. Maximal degree in co-relation 6013. Up to 738 conditions per place. [2024-06-28 02:22:54,310 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 149 selfloop transitions, 39 changer transitions 0/190 dead transitions. [2024-06-28 02:22:54,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 190 transitions, 2410 flow [2024-06-28 02:22:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:54,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:22:54,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:22:54,312 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1936 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:22:54,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 190 transitions, 2410 flow [2024-06-28 02:22:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 2312 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:54,373 INFO L231 Difference]: Finished difference. Result has 187 places, 174 transitions, 1971 flow [2024-06-28 02:22:54,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1971, PETRI_PLACES=187, PETRI_TRANSITIONS=174} [2024-06-28 02:22:54,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-28 02:22:54,374 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 174 transitions, 1971 flow [2024-06-28 02:22:54,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:54,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:54,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:54,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:22:54,374 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:54,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1985366831, now seen corresponding path program 2 times [2024-06-28 02:22:54,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:54,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862977572] [2024-06-28 02:22:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:55,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:55,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862977572] [2024-06-28 02:22:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862977572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:55,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:55,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:55,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860278512] [2024-06-28 02:22:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:55,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:55,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 174 transitions, 1971 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:55,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:55,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:55,488 INFO L124 PetriNetUnfolderBase]: 492/882 cut-off events. [2024-06-28 02:22:55,488 INFO L125 PetriNetUnfolderBase]: For 38360/38360 co-relation queries the response was YES. [2024-06-28 02:22:55,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6199 conditions, 882 events. 492/882 cut-off events. For 38360/38360 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4222 event pairs, 78 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 6115. Up to 733 conditions per place. [2024-06-28 02:22:55,494 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 149 selfloop transitions, 41 changer transitions 0/192 dead transitions. [2024-06-28 02:22:55,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 192 transitions, 2455 flow [2024-06-28 02:22:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:22:55,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:22:55,501 INFO L175 Difference]: Start difference. First operand has 187 places, 174 transitions, 1971 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:22:55,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 192 transitions, 2455 flow [2024-06-28 02:22:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 192 transitions, 2343 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:55,565 INFO L231 Difference]: Finished difference. Result has 190 places, 176 transitions, 2000 flow [2024-06-28 02:22:55,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=190, PETRI_TRANSITIONS=176} [2024-06-28 02:22:55,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-28 02:22:55,566 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 176 transitions, 2000 flow [2024-06-28 02:22:55,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:55,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:55,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:55,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:22:55,566 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:55,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1985157302, now seen corresponding path program 1 times [2024-06-28 02:22:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:55,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892754528] [2024-06-28 02:22:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:56,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892754528] [2024-06-28 02:22:56,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892754528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:56,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:56,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:22:56,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070573552] [2024-06-28 02:22:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:22:56,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:22:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:22:56,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:56,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 176 transitions, 2000 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:56,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:56,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:56,929 INFO L124 PetriNetUnfolderBase]: 501/897 cut-off events. [2024-06-28 02:22:56,929 INFO L125 PetriNetUnfolderBase]: For 40999/40999 co-relation queries the response was YES. [2024-06-28 02:22:56,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6345 conditions, 897 events. 501/897 cut-off events. For 40999/40999 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4287 event pairs, 82 based on Foata normal form. 3/896 useless extension candidates. Maximal degree in co-relation 6260. Up to 743 conditions per place. [2024-06-28 02:22:56,935 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 148 selfloop transitions, 46 changer transitions 0/196 dead transitions. [2024-06-28 02:22:56,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 196 transitions, 2513 flow [2024-06-28 02:22:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:22:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:22:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:22:56,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:22:56,941 INFO L175 Difference]: Start difference. First operand has 190 places, 176 transitions, 2000 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:22:56,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 196 transitions, 2513 flow [2024-06-28 02:22:56,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 196 transitions, 2388 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:22:56,998 INFO L231 Difference]: Finished difference. Result has 193 places, 179 transitions, 2048 flow [2024-06-28 02:22:56,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2048, PETRI_PLACES=193, PETRI_TRANSITIONS=179} [2024-06-28 02:22:56,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-28 02:22:56,999 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 179 transitions, 2048 flow [2024-06-28 02:22:56,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:56,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:56,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:57,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:22:57,000 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:57,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1939369839, now seen corresponding path program 3 times [2024-06-28 02:22:57,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:57,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823801908] [2024-06-28 02:22:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:57,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:57,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:57,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823801908] [2024-06-28 02:22:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823801908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:57,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:57,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:57,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571230561] [2024-06-28 02:22:57,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:57,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:57,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:57,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:57,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:57,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 179 transitions, 2048 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:57,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:57,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:57,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:58,218 INFO L124 PetriNetUnfolderBase]: 517/923 cut-off events. [2024-06-28 02:22:58,218 INFO L125 PetriNetUnfolderBase]: For 44525/44525 co-relation queries the response was YES. [2024-06-28 02:22:58,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 923 events. 517/923 cut-off events. For 44525/44525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4436 event pairs, 76 based on Foata normal form. 2/921 useless extension candidates. Maximal degree in co-relation 6603. Up to 713 conditions per place. [2024-06-28 02:22:58,225 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 55 changer transitions 0/200 dead transitions. [2024-06-28 02:22:58,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 200 transitions, 2706 flow [2024-06-28 02:22:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:22:58,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 02:22:58,226 INFO L175 Difference]: Start difference. First operand has 193 places, 179 transitions, 2048 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:22:58,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 200 transitions, 2706 flow [2024-06-28 02:22:58,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 200 transitions, 2564 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:22:58,303 INFO L231 Difference]: Finished difference. Result has 194 places, 183 transitions, 2133 flow [2024-06-28 02:22:58,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2133, PETRI_PLACES=194, PETRI_TRANSITIONS=183} [2024-06-28 02:22:58,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-28 02:22:58,303 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 183 transitions, 2133 flow [2024-06-28 02:22:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:58,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:58,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:22:58,304 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:58,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1985165021, now seen corresponding path program 4 times [2024-06-28 02:22:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900191174] [2024-06-28 02:22:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:59,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900191174] [2024-06-28 02:22:59,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900191174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:59,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:59,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:22:59,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850164503] [2024-06-28 02:22:59,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:22:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:22:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:22:59,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:22:59,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 183 transitions, 2133 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:59,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:59,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:22:59,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:59,679 INFO L124 PetriNetUnfolderBase]: 513/917 cut-off events. [2024-06-28 02:22:59,680 INFO L125 PetriNetUnfolderBase]: For 43301/43301 co-relation queries the response was YES. [2024-06-28 02:22:59,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 917 events. 513/917 cut-off events. For 43301/43301 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4403 event pairs, 76 based on Foata normal form. 2/915 useless extension candidates. Maximal degree in co-relation 6499. Up to 743 conditions per place. [2024-06-28 02:22:59,687 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 47 changer transitions 0/199 dead transitions. [2024-06-28 02:22:59,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 199 transitions, 2581 flow [2024-06-28 02:22:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:22:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:22:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:22:59,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:22:59,688 INFO L175 Difference]: Start difference. First operand has 194 places, 183 transitions, 2133 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:22:59,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 199 transitions, 2581 flow [2024-06-28 02:22:59,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 199 transitions, 2436 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:59,767 INFO L231 Difference]: Finished difference. Result has 198 places, 183 transitions, 2087 flow [2024-06-28 02:22:59,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2087, PETRI_PLACES=198, PETRI_TRANSITIONS=183} [2024-06-28 02:22:59,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-28 02:22:59,768 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 183 transitions, 2087 flow [2024-06-28 02:22:59,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:59,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:59,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:59,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:22:59,768 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:59,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash -670637293, now seen corresponding path program 8 times [2024-06-28 02:22:59,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:59,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755509741] [2024-06-28 02:22:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755509741] [2024-06-28 02:23:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755509741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:00,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314442325] [2024-06-28 02:23:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:00,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:00,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:00,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 183 transitions, 2087 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:00,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:00,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:00,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:00,582 INFO L124 PetriNetUnfolderBase]: 517/923 cut-off events. [2024-06-28 02:23:00,582 INFO L125 PetriNetUnfolderBase]: For 44447/44447 co-relation queries the response was YES. [2024-06-28 02:23:00,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 923 events. 517/923 cut-off events. For 44447/44447 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4419 event pairs, 56 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 6572. Up to 687 conditions per place. [2024-06-28 02:23:00,589 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 156 selfloop transitions, 38 changer transitions 0/196 dead transitions. [2024-06-28 02:23:00,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 196 transitions, 2531 flow [2024-06-28 02:23:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 02:23:00,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-28 02:23:00,590 INFO L175 Difference]: Start difference. First operand has 198 places, 183 transitions, 2087 flow. Second operand 8 states and 85 transitions. [2024-06-28 02:23:00,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 196 transitions, 2531 flow [2024-06-28 02:23:00,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 2413 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:00,674 INFO L231 Difference]: Finished difference. Result has 197 places, 184 transitions, 2083 flow [2024-06-28 02:23:00,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2083, PETRI_PLACES=197, PETRI_TRANSITIONS=184} [2024-06-28 02:23:00,674 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 02:23:00,674 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 184 transitions, 2083 flow [2024-06-28 02:23:00,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:00,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:00,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:00,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:23:00,675 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:00,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash -54875787, now seen corresponding path program 9 times [2024-06-28 02:23:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:00,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198086408] [2024-06-28 02:23:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:00,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:01,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:01,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198086408] [2024-06-28 02:23:01,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198086408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:01,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:01,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:01,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305583619] [2024-06-28 02:23:01,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:01,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:01,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:01,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 184 transitions, 2083 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:01,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:01,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:01,709 INFO L124 PetriNetUnfolderBase]: 521/931 cut-off events. [2024-06-28 02:23:01,710 INFO L125 PetriNetUnfolderBase]: For 46242/46242 co-relation queries the response was YES. [2024-06-28 02:23:01,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6728 conditions, 931 events. 521/931 cut-off events. For 46242/46242 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4485 event pairs, 80 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 6638. Up to 779 conditions per place. [2024-06-28 02:23:01,716 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 148 selfloop transitions, 46 changer transitions 0/196 dead transitions. [2024-06-28 02:23:01,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 196 transitions, 2531 flow [2024-06-28 02:23:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 02:23:01,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:23:01,717 INFO L175 Difference]: Start difference. First operand has 197 places, 184 transitions, 2083 flow. Second operand 8 states and 90 transitions. [2024-06-28 02:23:01,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 196 transitions, 2531 flow [2024-06-28 02:23:01,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 196 transitions, 2427 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:01,800 INFO L231 Difference]: Finished difference. Result has 199 places, 185 transitions, 2111 flow [2024-06-28 02:23:01,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2111, PETRI_PLACES=199, PETRI_TRANSITIONS=185} [2024-06-28 02:23:01,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 02:23:01,801 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 185 transitions, 2111 flow [2024-06-28 02:23:01,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:01,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:01,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:01,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:23:01,801 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:01,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash -831231793, now seen corresponding path program 10 times [2024-06-28 02:23:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620739904] [2024-06-28 02:23:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:02,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:02,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620739904] [2024-06-28 02:23:02,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620739904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:02,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:02,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:02,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517791903] [2024-06-28 02:23:02,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:02,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:02,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:02,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 185 transitions, 2111 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:02,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:02,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:02,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:02,882 INFO L124 PetriNetUnfolderBase]: 525/939 cut-off events. [2024-06-28 02:23:02,882 INFO L125 PetriNetUnfolderBase]: For 44773/44773 co-relation queries the response was YES. [2024-06-28 02:23:02,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6732 conditions, 939 events. 525/939 cut-off events. For 44773/44773 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4542 event pairs, 97 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 6641. Up to 815 conditions per place. [2024-06-28 02:23:02,889 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 164 selfloop transitions, 32 changer transitions 0/198 dead transitions. [2024-06-28 02:23:02,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 198 transitions, 2572 flow [2024-06-28 02:23:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:23:02,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 02:23:02,890 INFO L175 Difference]: Start difference. First operand has 199 places, 185 transitions, 2111 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:23:02,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 198 transitions, 2572 flow [2024-06-28 02:23:02,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 198 transitions, 2458 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:02,969 INFO L231 Difference]: Finished difference. Result has 202 places, 186 transitions, 2095 flow [2024-06-28 02:23:02,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2095, PETRI_PLACES=202, PETRI_TRANSITIONS=186} [2024-06-28 02:23:02,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-28 02:23:02,970 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 186 transitions, 2095 flow [2024-06-28 02:23:02,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:02,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:02,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:23:02,971 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:02,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -54875632, now seen corresponding path program 3 times [2024-06-28 02:23:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:02,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148550037] [2024-06-28 02:23:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:03,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:03,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148550037] [2024-06-28 02:23:03,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148550037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:03,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:03,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43125604] [2024-06-28 02:23:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:03,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:03,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:03,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 186 transitions, 2095 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:03,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:03,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:03,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:03,884 INFO L124 PetriNetUnfolderBase]: 523/936 cut-off events. [2024-06-28 02:23:03,884 INFO L125 PetriNetUnfolderBase]: For 41717/41717 co-relation queries the response was YES. [2024-06-28 02:23:03,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6570 conditions, 936 events. 523/936 cut-off events. For 41717/41717 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4531 event pairs, 82 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 6478. Up to 772 conditions per place. [2024-06-28 02:23:03,890 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 54 changer transitions 0/199 dead transitions. [2024-06-28 02:23:03,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 199 transitions, 2586 flow [2024-06-28 02:23:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 02:23:03,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 02:23:03,891 INFO L175 Difference]: Start difference. First operand has 202 places, 186 transitions, 2095 flow. Second operand 8 states and 92 transitions. [2024-06-28 02:23:03,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 199 transitions, 2586 flow [2024-06-28 02:23:03,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 2455 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:03,979 INFO L231 Difference]: Finished difference. Result has 201 places, 188 transitions, 2155 flow [2024-06-28 02:23:03,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2155, PETRI_PLACES=201, PETRI_TRANSITIONS=188} [2024-06-28 02:23:03,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 02:23:03,979 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 188 transitions, 2155 flow [2024-06-28 02:23:03,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:03,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:03,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:03,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:23:03,980 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:03,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:03,980 INFO L85 PathProgramCache]: Analyzing trace with hash -689128723, now seen corresponding path program 11 times [2024-06-28 02:23:03,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:03,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824179442] [2024-06-28 02:23:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:03,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:04,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824179442] [2024-06-28 02:23:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824179442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:04,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:04,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082998941] [2024-06-28 02:23:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:04,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:04,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:04,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:04,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 188 transitions, 2155 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:04,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:04,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:04,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:05,018 INFO L124 PetriNetUnfolderBase]: 527/944 cut-off events. [2024-06-28 02:23:05,018 INFO L125 PetriNetUnfolderBase]: For 44660/44660 co-relation queries the response was YES. [2024-06-28 02:23:05,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 944 events. 527/944 cut-off events. For 44660/44660 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4597 event pairs, 64 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 6570. Up to 758 conditions per place. [2024-06-28 02:23:05,025 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 158 selfloop transitions, 43 changer transitions 0/203 dead transitions. [2024-06-28 02:23:05,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 203 transitions, 2632 flow [2024-06-28 02:23:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:23:05,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 02:23:05,026 INFO L175 Difference]: Start difference. First operand has 201 places, 188 transitions, 2155 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:23:05,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 203 transitions, 2632 flow [2024-06-28 02:23:05,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 203 transitions, 2488 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:05,124 INFO L231 Difference]: Finished difference. Result has 203 places, 189 transitions, 2133 flow [2024-06-28 02:23:05,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2133, PETRI_PLACES=203, PETRI_TRANSITIONS=189} [2024-06-28 02:23:05,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 02:23:05,125 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 189 transitions, 2133 flow [2024-06-28 02:23:05,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:05,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:05,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:05,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:23:05,125 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:05,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:05,126 INFO L85 PathProgramCache]: Analyzing trace with hash -689125003, now seen corresponding path program 12 times [2024-06-28 02:23:05,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:05,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452384717] [2024-06-28 02:23:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:05,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:05,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452384717] [2024-06-28 02:23:05,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452384717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:05,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:05,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:05,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968963991] [2024-06-28 02:23:05,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:05,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:05,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:05,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 189 transitions, 2133 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:05,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:05,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:05,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:06,257 INFO L124 PetriNetUnfolderBase]: 531/952 cut-off events. [2024-06-28 02:23:06,258 INFO L125 PetriNetUnfolderBase]: For 44819/44819 co-relation queries the response was YES. [2024-06-28 02:23:06,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6687 conditions, 952 events. 531/952 cut-off events. For 44819/44819 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4656 event pairs, 97 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 6595. Up to 825 conditions per place. [2024-06-28 02:23:06,266 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 36 changer transitions 0/203 dead transitions. [2024-06-28 02:23:06,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 203 transitions, 2616 flow [2024-06-28 02:23:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:23:06,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 02:23:06,267 INFO L175 Difference]: Start difference. First operand has 203 places, 189 transitions, 2133 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:23:06,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 203 transitions, 2616 flow [2024-06-28 02:23:06,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 203 transitions, 2502 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:06,355 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 2152 flow [2024-06-28 02:23:06,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2152, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-06-28 02:23:06,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 02:23:06,356 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 2152 flow [2024-06-28 02:23:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:06,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:06,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:23:06,357 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:06,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash -689124848, now seen corresponding path program 4 times [2024-06-28 02:23:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412982851] [2024-06-28 02:23:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:07,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:07,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412982851] [2024-06-28 02:23:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412982851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:07,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:07,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:07,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744988920] [2024-06-28 02:23:07,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:07,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:07,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:07,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:07,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 191 transitions, 2152 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:07,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:07,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:07,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:07,450 INFO L124 PetriNetUnfolderBase]: 529/949 cut-off events. [2024-06-28 02:23:07,450 INFO L125 PetriNetUnfolderBase]: For 41821/41821 co-relation queries the response was YES. [2024-06-28 02:23:07,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 949 events. 529/949 cut-off events. For 41821/41821 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4641 event pairs, 91 based on Foata normal form. 1/949 useless extension candidates. Maximal degree in co-relation 6451. Up to 799 conditions per place. [2024-06-28 02:23:07,458 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 52 changer transitions 0/207 dead transitions. [2024-06-28 02:23:07,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 207 transitions, 2687 flow [2024-06-28 02:23:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 02:23:07,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:23:07,459 INFO L175 Difference]: Start difference. First operand has 207 places, 191 transitions, 2152 flow. Second operand 8 states and 93 transitions. [2024-06-28 02:23:07,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 207 transitions, 2687 flow [2024-06-28 02:23:07,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 207 transitions, 2587 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:07,553 INFO L231 Difference]: Finished difference. Result has 209 places, 193 transitions, 2244 flow [2024-06-28 02:23:07,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2244, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2024-06-28 02:23:07,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 02:23:07,554 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 2244 flow [2024-06-28 02:23:07,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:07,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:07,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:23:07,554 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:07,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash -688974901, now seen corresponding path program 5 times [2024-06-28 02:23:07,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:07,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31584545] [2024-06-28 02:23:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31584545] [2024-06-28 02:23:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31584545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:08,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:08,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:08,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74661700] [2024-06-28 02:23:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:08,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:08,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:08,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 2244 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:08,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:08,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:08,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:08,830 INFO L124 PetriNetUnfolderBase]: 535/961 cut-off events. [2024-06-28 02:23:08,830 INFO L125 PetriNetUnfolderBase]: For 44933/44933 co-relation queries the response was YES. [2024-06-28 02:23:08,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 961 events. 535/961 cut-off events. For 44933/44933 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4735 event pairs, 86 based on Foata normal form. 2/959 useless extension candidates. Maximal degree in co-relation 6598. Up to 805 conditions per place. [2024-06-28 02:23:08,837 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 50 changer transitions 0/211 dead transitions. [2024-06-28 02:23:08,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 211 transitions, 2785 flow [2024-06-28 02:23:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:08,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:23:08,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 02:23:08,837 INFO L175 Difference]: Start difference. First operand has 209 places, 193 transitions, 2244 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:23:08,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 211 transitions, 2785 flow [2024-06-28 02:23:08,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 211 transitions, 2635 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:08,928 INFO L231 Difference]: Finished difference. Result has 212 places, 195 transitions, 2266 flow [2024-06-28 02:23:08,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2266, PETRI_PLACES=212, PETRI_TRANSITIONS=195} [2024-06-28 02:23:08,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 02:23:08,929 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 195 transitions, 2266 flow [2024-06-28 02:23:08,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:08,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:08,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:08,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:23:08,929 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:08,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash -683618473, now seen corresponding path program 13 times [2024-06-28 02:23:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512714533] [2024-06-28 02:23:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:09,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:09,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512714533] [2024-06-28 02:23:09,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512714533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:09,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:09,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:23:09,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459521028] [2024-06-28 02:23:09,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:09,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:23:09,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:09,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:23:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:23:09,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:09,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 195 transitions, 2266 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:09,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:09,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:09,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:09,771 INFO L124 PetriNetUnfolderBase]: 539/969 cut-off events. [2024-06-28 02:23:09,771 INFO L125 PetriNetUnfolderBase]: For 44958/44958 co-relation queries the response was YES. [2024-06-28 02:23:09,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6753 conditions, 969 events. 539/969 cut-off events. For 44958/44958 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4801 event pairs, 74 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 6658. Up to 798 conditions per place. [2024-06-28 02:23:09,779 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 159 selfloop transitions, 47 changer transitions 0/208 dead transitions. [2024-06-28 02:23:09,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 208 transitions, 2744 flow [2024-06-28 02:23:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 02:23:09,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 02:23:09,780 INFO L175 Difference]: Start difference. First operand has 212 places, 195 transitions, 2266 flow. Second operand 8 states and 89 transitions. [2024-06-28 02:23:09,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 208 transitions, 2744 flow [2024-06-28 02:23:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 208 transitions, 2598 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:09,870 INFO L231 Difference]: Finished difference. Result has 213 places, 196 transitions, 2252 flow [2024-06-28 02:23:09,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2252, PETRI_PLACES=213, PETRI_TRANSITIONS=196} [2024-06-28 02:23:09,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 02:23:09,871 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 196 transitions, 2252 flow [2024-06-28 02:23:09,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:09,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:09,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:09,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:23:09,871 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:09,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash -683612521, now seen corresponding path program 6 times [2024-06-28 02:23:09,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:09,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445118245] [2024-06-28 02:23:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:10,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:10,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445118245] [2024-06-28 02:23:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445118245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:10,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:10,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531015923] [2024-06-28 02:23:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:10,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:10,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:10,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 196 transitions, 2252 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:10,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:10,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:10,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:11,118 INFO L124 PetriNetUnfolderBase]: 545/979 cut-off events. [2024-06-28 02:23:11,118 INFO L125 PetriNetUnfolderBase]: For 45107/45107 co-relation queries the response was YES. [2024-06-28 02:23:11,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 979 events. 545/979 cut-off events. For 45107/45107 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4841 event pairs, 74 based on Foata normal form. 2/977 useless extension candidates. Maximal degree in co-relation 6689. Up to 788 conditions per place. [2024-06-28 02:23:11,126 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 53 changer transitions 0/212 dead transitions. [2024-06-28 02:23:11,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 212 transitions, 2778 flow [2024-06-28 02:23:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:23:11,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:23:11,127 INFO L175 Difference]: Start difference. First operand has 213 places, 196 transitions, 2252 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:23:11,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 212 transitions, 2778 flow [2024-06-28 02:23:11,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 212 transitions, 2651 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:11,223 INFO L231 Difference]: Finished difference. Result has 215 places, 198 transitions, 2301 flow [2024-06-28 02:23:11,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2301, PETRI_PLACES=215, PETRI_TRANSITIONS=198} [2024-06-28 02:23:11,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 02:23:11,224 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 198 transitions, 2301 flow [2024-06-28 02:23:11,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:11,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:11,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:11,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:23:11,224 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:11,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash -683410711, now seen corresponding path program 7 times [2024-06-28 02:23:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:11,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459488965] [2024-06-28 02:23:11,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:11,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459488965] [2024-06-28 02:23:12,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459488965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:12,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:12,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:12,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004200433] [2024-06-28 02:23:12,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:12,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:12,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:12,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 198 transitions, 2301 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:12,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:12,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:12,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:12,481 INFO L124 PetriNetUnfolderBase]: 561/1005 cut-off events. [2024-06-28 02:23:12,481 INFO L125 PetriNetUnfolderBase]: For 48533/48533 co-relation queries the response was YES. [2024-06-28 02:23:12,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7137 conditions, 1005 events. 561/1005 cut-off events. For 48533/48533 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5031 event pairs, 73 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 7041. Up to 685 conditions per place. [2024-06-28 02:23:12,488 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 79 changer transitions 0/217 dead transitions. [2024-06-28 02:23:12,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 217 transitions, 3011 flow [2024-06-28 02:23:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:23:12,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 02:23:12,489 INFO L175 Difference]: Start difference. First operand has 215 places, 198 transitions, 2301 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:23:12,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 217 transitions, 3011 flow [2024-06-28 02:23:12,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 217 transitions, 2849 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:12,586 INFO L231 Difference]: Finished difference. Result has 217 places, 202 transitions, 2435 flow [2024-06-28 02:23:12,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2435, PETRI_PLACES=217, PETRI_TRANSITIONS=202} [2024-06-28 02:23:12,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-28 02:23:12,587 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 202 transitions, 2435 flow [2024-06-28 02:23:12,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:12,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:12,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:12,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:23:12,588 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:12,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1786446973, now seen corresponding path program 8 times [2024-06-28 02:23:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:12,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009352058] [2024-06-28 02:23:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:13,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:13,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009352058] [2024-06-28 02:23:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009352058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680216728] [2024-06-28 02:23:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:13,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:13,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 202 transitions, 2435 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:13,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:13,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:13,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:13,869 INFO L124 PetriNetUnfolderBase]: 557/999 cut-off events. [2024-06-28 02:23:13,869 INFO L125 PetriNetUnfolderBase]: For 45606/45606 co-relation queries the response was YES. [2024-06-28 02:23:13,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 999 events. 557/999 cut-off events. For 45606/45606 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4973 event pairs, 72 based on Foata normal form. 2/997 useless extension candidates. Maximal degree in co-relation 6902. Up to 682 conditions per place. [2024-06-28 02:23:13,876 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 83 changer transitions 0/216 dead transitions. [2024-06-28 02:23:13,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 216 transitions, 2911 flow [2024-06-28 02:23:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:23:13,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 02:23:13,877 INFO L175 Difference]: Start difference. First operand has 217 places, 202 transitions, 2435 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:23:13,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 216 transitions, 2911 flow [2024-06-28 02:23:13,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 2715 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:13,983 INFO L231 Difference]: Finished difference. Result has 219 places, 202 transitions, 2414 flow [2024-06-28 02:23:13,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2414, PETRI_PLACES=219, PETRI_TRANSITIONS=202} [2024-06-28 02:23:13,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 02:23:13,984 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 202 transitions, 2414 flow [2024-06-28 02:23:13,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:13,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:13,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:13,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:23:13,984 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:13,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1786447252, now seen corresponding path program 2 times [2024-06-28 02:23:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:13,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678378239] [2024-06-28 02:23:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:13,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:15,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678378239] [2024-06-28 02:23:15,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678378239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:15,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:15,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:15,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813127254] [2024-06-28 02:23:15,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:15,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:15,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:15,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:15,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:15,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:15,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 202 transitions, 2414 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:15,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:15,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:15,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:15,761 INFO L124 PetriNetUnfolderBase]: 561/1006 cut-off events. [2024-06-28 02:23:15,761 INFO L125 PetriNetUnfolderBase]: For 44940/44940 co-relation queries the response was YES. [2024-06-28 02:23:15,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7075 conditions, 1006 events. 561/1006 cut-off events. For 44940/44940 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5029 event pairs, 90 based on Foata normal form. 3/1005 useless extension candidates. Maximal degree in co-relation 6978. Up to 810 conditions per place. [2024-06-28 02:23:15,769 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 158 selfloop transitions, 60 changer transitions 0/220 dead transitions. [2024-06-28 02:23:15,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 220 transitions, 2975 flow [2024-06-28 02:23:15,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:23:15,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:23:15,770 INFO L175 Difference]: Start difference. First operand has 219 places, 202 transitions, 2414 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:23:15,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 220 transitions, 2975 flow [2024-06-28 02:23:15,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 220 transitions, 2793 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:15,871 INFO L231 Difference]: Finished difference. Result has 220 places, 205 transitions, 2443 flow [2024-06-28 02:23:15,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2443, PETRI_PLACES=220, PETRI_TRANSITIONS=205} [2024-06-28 02:23:15,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 02:23:15,872 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 205 transitions, 2443 flow [2024-06-28 02:23:15,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:15,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:15,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:23:15,873 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:15,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1206873108, now seen corresponding path program 3 times [2024-06-28 02:23:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:15,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875939825] [2024-06-28 02:23:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:17,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:17,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875939825] [2024-06-28 02:23:17,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875939825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:17,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:17,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193052303] [2024-06-28 02:23:17,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:17,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:17,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:17,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:17,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:17,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 205 transitions, 2443 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:17,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:17,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:17,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:17,551 INFO L124 PetriNetUnfolderBase]: 564/1009 cut-off events. [2024-06-28 02:23:17,551 INFO L125 PetriNetUnfolderBase]: For 42007/42007 co-relation queries the response was YES. [2024-06-28 02:23:17,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 1009 events. 564/1009 cut-off events. For 42007/42007 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5023 event pairs, 110 based on Foata normal form. 1/1006 useless extension candidates. Maximal degree in co-relation 6975. Up to 887 conditions per place. [2024-06-28 02:23:17,557 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 42 changer transitions 0/216 dead transitions. [2024-06-28 02:23:17,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 216 transitions, 2937 flow [2024-06-28 02:23:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 02:23:17,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 02:23:17,558 INFO L175 Difference]: Start difference. First operand has 220 places, 205 transitions, 2443 flow. Second operand 10 states and 102 transitions. [2024-06-28 02:23:17,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 216 transitions, 2937 flow [2024-06-28 02:23:17,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 216 transitions, 2759 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:17,657 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 2404 flow [2024-06-28 02:23:17,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2404, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2024-06-28 02:23:17,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 02:23:17,658 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 2404 flow [2024-06-28 02:23:17,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:17,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:17,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:17,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:23:17,659 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:17,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:17,659 INFO L85 PathProgramCache]: Analyzing trace with hash 496863179, now seen corresponding path program 9 times [2024-06-28 02:23:17,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:17,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036983576] [2024-06-28 02:23:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:17,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:18,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036983576] [2024-06-28 02:23:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036983576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:18,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408031146] [2024-06-28 02:23:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:18,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:18,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:18,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:18,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 2404 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:18,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:18,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:18,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:18,943 INFO L124 PetriNetUnfolderBase]: 590/1051 cut-off events. [2024-06-28 02:23:18,943 INFO L125 PetriNetUnfolderBase]: For 50146/50146 co-relation queries the response was YES. [2024-06-28 02:23:18,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7565 conditions, 1051 events. 590/1051 cut-off events. For 50146/50146 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5272 event pairs, 90 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 7467. Up to 820 conditions per place. [2024-06-28 02:23:18,951 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 167 selfloop transitions, 59 changer transitions 0/228 dead transitions. [2024-06-28 02:23:18,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 228 transitions, 3306 flow [2024-06-28 02:23:18,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:23:18,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 02:23:18,952 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 2404 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:23:18,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 228 transitions, 3306 flow [2024-06-28 02:23:19,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 228 transitions, 3193 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:19,060 INFO L231 Difference]: Finished difference. Result has 223 places, 213 transitions, 2604 flow [2024-06-28 02:23:19,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2604, PETRI_PLACES=223, PETRI_TRANSITIONS=213} [2024-06-28 02:23:19,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-28 02:23:19,061 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 213 transitions, 2604 flow [2024-06-28 02:23:19,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:19,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:19,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:19,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:23:19,061 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:19,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash -555476483, now seen corresponding path program 10 times [2024-06-28 02:23:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:19,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214200034] [2024-06-28 02:23:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:19,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214200034] [2024-06-28 02:23:19,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214200034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:19,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:19,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930279335] [2024-06-28 02:23:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:19,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:19,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:19,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:20,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:20,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 213 transitions, 2604 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:20,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:20,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:20,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:20,319 INFO L124 PetriNetUnfolderBase]: 586/1045 cut-off events. [2024-06-28 02:23:20,319 INFO L125 PetriNetUnfolderBase]: For 49260/49260 co-relation queries the response was YES. [2024-06-28 02:23:20,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1045 events. 586/1045 cut-off events. For 49260/49260 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5250 event pairs, 89 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 7400. Up to 817 conditions per place. [2024-06-28 02:23:20,327 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 60 changer transitions 0/227 dead transitions. [2024-06-28 02:23:20,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 227 transitions, 3212 flow [2024-06-28 02:23:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:23:20,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:23:20,328 INFO L175 Difference]: Start difference. First operand has 223 places, 213 transitions, 2604 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:23:20,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 227 transitions, 3212 flow [2024-06-28 02:23:20,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 227 transitions, 3026 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:20,440 INFO L231 Difference]: Finished difference. Result has 228 places, 213 transitions, 2543 flow [2024-06-28 02:23:20,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2543, PETRI_PLACES=228, PETRI_TRANSITIONS=213} [2024-06-28 02:23:20,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-28 02:23:20,440 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 213 transitions, 2543 flow [2024-06-28 02:23:20,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:20,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:20,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:23:20,441 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:20,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:20,441 INFO L85 PathProgramCache]: Analyzing trace with hash -289779203, now seen corresponding path program 11 times [2024-06-28 02:23:20,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:20,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129677135] [2024-06-28 02:23:20,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:20,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:21,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:21,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129677135] [2024-06-28 02:23:21,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129677135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:21,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:21,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:21,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241493931] [2024-06-28 02:23:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:21,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:21,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:21,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:21,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 213 transitions, 2543 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:21,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:21,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:21,557 INFO L124 PetriNetUnfolderBase]: 608/1081 cut-off events. [2024-06-28 02:23:21,557 INFO L125 PetriNetUnfolderBase]: For 56203/56203 co-relation queries the response was YES. [2024-06-28 02:23:21,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 1081 events. 608/1081 cut-off events. For 56203/56203 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5428 event pairs, 190 based on Foata normal form. 4/1084 useless extension candidates. Maximal degree in co-relation 7797. Up to 1017 conditions per place. [2024-06-28 02:23:21,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 22 changer transitions 0/230 dead transitions. [2024-06-28 02:23:21,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 230 transitions, 3267 flow [2024-06-28 02:23:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:21,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 02:23:21,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 02:23:21,566 INFO L175 Difference]: Start difference. First operand has 228 places, 213 transitions, 2543 flow. Second operand 10 states and 103 transitions. [2024-06-28 02:23:21,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 230 transitions, 3267 flow [2024-06-28 02:23:21,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 230 transitions, 3151 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:21,675 INFO L231 Difference]: Finished difference. Result has 231 places, 218 transitions, 2607 flow [2024-06-28 02:23:21,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2607, PETRI_PLACES=231, PETRI_TRANSITIONS=218} [2024-06-28 02:23:21,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 02:23:21,676 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 218 transitions, 2607 flow [2024-06-28 02:23:21,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:21,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:21,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:21,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:23:21,676 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:21,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash -289778924, now seen corresponding path program 4 times [2024-06-28 02:23:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:21,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097628310] [2024-06-28 02:23:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:22,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:22,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097628310] [2024-06-28 02:23:22,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097628310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:22,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:22,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:22,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480325212] [2024-06-28 02:23:22,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:22,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:22,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:22,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:22,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:22,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 218 transitions, 2607 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:22,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:22,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:22,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:22,882 INFO L124 PetriNetUnfolderBase]: 606/1078 cut-off events. [2024-06-28 02:23:22,882 INFO L125 PetriNetUnfolderBase]: For 52138/52138 co-relation queries the response was YES. [2024-06-28 02:23:22,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7802 conditions, 1078 events. 606/1078 cut-off events. For 52138/52138 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5411 event pairs, 190 based on Foata normal form. 1/1078 useless extension candidates. Maximal degree in co-relation 7700. Up to 1041 conditions per place. [2024-06-28 02:23:22,890 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 19 changer transitions 0/227 dead transitions. [2024-06-28 02:23:22,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 227 transitions, 3077 flow [2024-06-28 02:23:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 02:23:22,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-28 02:23:22,891 INFO L175 Difference]: Start difference. First operand has 231 places, 218 transitions, 2607 flow. Second operand 10 states and 97 transitions. [2024-06-28 02:23:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 227 transitions, 3077 flow [2024-06-28 02:23:23,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 227 transitions, 2955 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:23,002 INFO L231 Difference]: Finished difference. Result has 235 places, 218 transitions, 2528 flow [2024-06-28 02:23:23,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2528, PETRI_PLACES=235, PETRI_TRANSITIONS=218} [2024-06-28 02:23:23,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 02:23:23,003 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 218 transitions, 2528 flow [2024-06-28 02:23:23,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:23,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:23,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:23,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:23:23,003 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:23,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:23,003 INFO L85 PathProgramCache]: Analyzing trace with hash 496870898, now seen corresponding path program 5 times [2024-06-28 02:23:23,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:23,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994218055] [2024-06-28 02:23:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:23,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:23,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:23,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994218055] [2024-06-28 02:23:23,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994218055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:23,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:23,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:23,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601451956] [2024-06-28 02:23:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:23,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:23,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:23,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 218 transitions, 2528 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:23,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:23,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:23,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:24,363 INFO L124 PetriNetUnfolderBase]: 609/1083 cut-off events. [2024-06-28 02:23:24,363 INFO L125 PetriNetUnfolderBase]: For 52801/52801 co-relation queries the response was YES. [2024-06-28 02:23:24,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7745 conditions, 1083 events. 609/1083 cut-off events. For 52801/52801 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5441 event pairs, 104 based on Foata normal form. 1/1080 useless extension candidates. Maximal degree in co-relation 7641. Up to 929 conditions per place. [2024-06-28 02:23:24,372 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 173 selfloop transitions, 55 changer transitions 0/230 dead transitions. [2024-06-28 02:23:24,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 230 transitions, 3056 flow [2024-06-28 02:23:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:23:24,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:23:24,373 INFO L175 Difference]: Start difference. First operand has 235 places, 218 transitions, 2528 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:23:24,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 230 transitions, 3056 flow [2024-06-28 02:23:24,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 230 transitions, 3018 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:24,501 INFO L231 Difference]: Finished difference. Result has 236 places, 220 transitions, 2655 flow [2024-06-28 02:23:24,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2655, PETRI_PLACES=236, PETRI_TRANSITIONS=220} [2024-06-28 02:23:24,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 02:23:24,502 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 220 transitions, 2655 flow [2024-06-28 02:23:24,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:24,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:24,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:24,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:23:24,503 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1646889567, now seen corresponding path program 14 times [2024-06-28 02:23:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997984337] [2024-06-28 02:23:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997984337] [2024-06-28 02:23:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997984337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:25,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:25,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665250820] [2024-06-28 02:23:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:25,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:25,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:25,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:25,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 220 transitions, 2655 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:25,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:25,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:25,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:25,466 INFO L124 PetriNetUnfolderBase]: 606/1078 cut-off events. [2024-06-28 02:23:25,466 INFO L125 PetriNetUnfolderBase]: For 53083/53083 co-relation queries the response was YES. [2024-06-28 02:23:25,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7725 conditions, 1078 events. 606/1078 cut-off events. For 53083/53083 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5430 event pairs, 93 based on Foata normal form. 2/1076 useless extension candidates. Maximal degree in co-relation 7620. Up to 889 conditions per place. [2024-06-28 02:23:25,474 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 179 selfloop transitions, 49 changer transitions 0/230 dead transitions. [2024-06-28 02:23:25,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 230 transitions, 3141 flow [2024-06-28 02:23:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 02:23:25,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 02:23:25,476 INFO L175 Difference]: Start difference. First operand has 236 places, 220 transitions, 2655 flow. Second operand 8 states and 87 transitions. [2024-06-28 02:23:25,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 230 transitions, 3141 flow [2024-06-28 02:23:25,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 230 transitions, 2998 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:25,627 INFO L231 Difference]: Finished difference. Result has 236 places, 220 transitions, 2614 flow [2024-06-28 02:23:25,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2614, PETRI_PLACES=236, PETRI_TRANSITIONS=220} [2024-06-28 02:23:25,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 02:23:25,628 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 220 transitions, 2614 flow [2024-06-28 02:23:25,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:25,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:25,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:23:25,628 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:25,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash -298975973, now seen corresponding path program 12 times [2024-06-28 02:23:25,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:25,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698664551] [2024-06-28 02:23:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:25,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:26,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698664551] [2024-06-28 02:23:26,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698664551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:26,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:26,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:26,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822627075] [2024-06-28 02:23:26,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:26,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:26,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:26,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:26,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:26,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:26,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 220 transitions, 2614 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:26,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:26,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:26,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:26,928 INFO L124 PetriNetUnfolderBase]: 617/1096 cut-off events. [2024-06-28 02:23:26,928 INFO L125 PetriNetUnfolderBase]: For 58065/58065 co-relation queries the response was YES. [2024-06-28 02:23:26,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 1096 events. 617/1096 cut-off events. For 58065/58065 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5553 event pairs, 89 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 7903. Up to 500 conditions per place. [2024-06-28 02:23:26,936 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 104 changer transitions 0/242 dead transitions. [2024-06-28 02:23:26,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 242 transitions, 3602 flow [2024-06-28 02:23:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 02:23:26,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:23:26,937 INFO L175 Difference]: Start difference. First operand has 236 places, 220 transitions, 2614 flow. Second operand 9 states and 108 transitions. [2024-06-28 02:23:26,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 242 transitions, 3602 flow [2024-06-28 02:23:27,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 242 transitions, 3432 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:27,071 INFO L231 Difference]: Finished difference. Result has 240 places, 226 transitions, 2928 flow [2024-06-28 02:23:27,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2928, PETRI_PLACES=240, PETRI_TRANSITIONS=226} [2024-06-28 02:23:27,072 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 02:23:27,072 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 226 transitions, 2928 flow [2024-06-28 02:23:27,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:27,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:27,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:27,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:23:27,072 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:27,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash -298975694, now seen corresponding path program 6 times [2024-06-28 02:23:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:27,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766547181] [2024-06-28 02:23:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:27,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:28,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:28,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766547181] [2024-06-28 02:23:28,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766547181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:28,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:28,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:28,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522326686] [2024-06-28 02:23:28,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:28,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:28,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:28,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:28,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:28,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:28,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 226 transitions, 2928 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:28,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:28,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:28,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:28,626 INFO L124 PetriNetUnfolderBase]: 615/1093 cut-off events. [2024-06-28 02:23:28,626 INFO L125 PetriNetUnfolderBase]: For 55964/55964 co-relation queries the response was YES. [2024-06-28 02:23:28,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 1093 events. 615/1093 cut-off events. For 55964/55964 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5522 event pairs, 107 based on Foata normal form. 1/1090 useless extension candidates. Maximal degree in co-relation 8057. Up to 820 conditions per place. [2024-06-28 02:23:28,658 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 149 selfloop transitions, 88 changer transitions 0/239 dead transitions. [2024-06-28 02:23:28,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 239 transitions, 3602 flow [2024-06-28 02:23:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:23:28,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 02:23:28,659 INFO L175 Difference]: Start difference. First operand has 240 places, 226 transitions, 2928 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:23:28,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 239 transitions, 3602 flow [2024-06-28 02:23:28,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 239 transitions, 3409 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:28,800 INFO L231 Difference]: Finished difference. Result has 244 places, 227 transitions, 2935 flow [2024-06-28 02:23:28,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2935, PETRI_PLACES=244, PETRI_TRANSITIONS=227} [2024-06-28 02:23:28,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-28 02:23:28,801 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 227 transitions, 2935 flow [2024-06-28 02:23:28,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:28,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:28,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:28,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:23:28,801 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:28,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash 496661369, now seen corresponding path program 13 times [2024-06-28 02:23:28,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:28,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118355063] [2024-06-28 02:23:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:28,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:29,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:29,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118355063] [2024-06-28 02:23:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118355063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:29,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:29,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607831453] [2024-06-28 02:23:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:29,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:29,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:29,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 227 transitions, 2935 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:29,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:29,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:29,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:30,015 INFO L124 PetriNetUnfolderBase]: 611/1087 cut-off events. [2024-06-28 02:23:30,015 INFO L125 PetriNetUnfolderBase]: For 55006/55006 co-relation queries the response was YES. [2024-06-28 02:23:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7972 conditions, 1087 events. 611/1087 cut-off events. For 55006/55006 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5502 event pairs, 94 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 7862. Up to 888 conditions per place. [2024-06-28 02:23:30,024 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 185 selfloop transitions, 52 changer transitions 0/239 dead transitions. [2024-06-28 02:23:30,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 239 transitions, 3451 flow [2024-06-28 02:23:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:23:30,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 02:23:30,025 INFO L175 Difference]: Start difference. First operand has 244 places, 227 transitions, 2935 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:23:30,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 239 transitions, 3451 flow [2024-06-28 02:23:30,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 239 transitions, 3237 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:30,184 INFO L231 Difference]: Finished difference. Result has 247 places, 227 transitions, 2830 flow [2024-06-28 02:23:30,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2830, PETRI_PLACES=247, PETRI_TRANSITIONS=227} [2024-06-28 02:23:30,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 02:23:30,184 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 227 transitions, 2830 flow [2024-06-28 02:23:30,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:30,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:30,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:30,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:23:30,185 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:30,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash -298983413, now seen corresponding path program 14 times [2024-06-28 02:23:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:30,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11511802] [2024-06-28 02:23:30,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:30,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:30,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11511802] [2024-06-28 02:23:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11511802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:30,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:30,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393028508] [2024-06-28 02:23:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:30,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:30,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:30,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 227 transitions, 2830 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:30,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:30,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:30,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:31,224 INFO L124 PetriNetUnfolderBase]: 607/1081 cut-off events. [2024-06-28 02:23:31,224 INFO L125 PetriNetUnfolderBase]: For 51811/51811 co-relation queries the response was YES. [2024-06-28 02:23:31,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7683 conditions, 1081 events. 607/1081 cut-off events. For 51811/51811 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5486 event pairs, 90 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 7572. Up to 497 conditions per place. [2024-06-28 02:23:31,231 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 104 changer transitions 0/241 dead transitions. [2024-06-28 02:23:31,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 241 transitions, 3506 flow [2024-06-28 02:23:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:31,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:23:31,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 02:23:31,233 INFO L175 Difference]: Start difference. First operand has 247 places, 227 transitions, 2830 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:23:31,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 241 transitions, 3506 flow [2024-06-28 02:23:31,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 241 transitions, 3340 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:31,387 INFO L231 Difference]: Finished difference. Result has 247 places, 227 transitions, 2877 flow [2024-06-28 02:23:31,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2877, PETRI_PLACES=247, PETRI_TRANSITIONS=227} [2024-06-28 02:23:31,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 02:23:31,388 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 227 transitions, 2877 flow [2024-06-28 02:23:31,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:31,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:31,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:31,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:23:31,388 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:31,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1490118898, now seen corresponding path program 1 times [2024-06-28 02:23:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:31,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149259416] [2024-06-28 02:23:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:31,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:32,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:32,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149259416] [2024-06-28 02:23:32,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149259416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:32,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:32,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202375849] [2024-06-28 02:23:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:32,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:32,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:32,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 227 transitions, 2877 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:32,558 INFO L124 PetriNetUnfolderBase]: 611/1089 cut-off events. [2024-06-28 02:23:32,558 INFO L125 PetriNetUnfolderBase]: For 54941/54941 co-relation queries the response was YES. [2024-06-28 02:23:32,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7845 conditions, 1089 events. 611/1089 cut-off events. For 54941/54941 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5538 event pairs, 98 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7733. Up to 914 conditions per place. [2024-06-28 02:23:32,565 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 210 selfloop transitions, 33 changer transitions 0/245 dead transitions. [2024-06-28 02:23:32,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 245 transitions, 3435 flow [2024-06-28 02:23:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:23:32,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:23:32,567 INFO L175 Difference]: Start difference. First operand has 247 places, 227 transitions, 2877 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:23:32,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 245 transitions, 3435 flow [2024-06-28 02:23:32,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 245 transitions, 3222 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:32,706 INFO L231 Difference]: Finished difference. Result has 249 places, 228 transitions, 2766 flow [2024-06-28 02:23:32,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2766, PETRI_PLACES=249, PETRI_TRANSITIONS=228} [2024-06-28 02:23:32,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 02:23:32,706 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 228 transitions, 2766 flow [2024-06-28 02:23:32,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:32,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:32,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:32,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:23:32,707 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:32,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 167340000, now seen corresponding path program 2 times [2024-06-28 02:23:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:32,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326404578] [2024-06-28 02:23:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:32,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:33,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:33,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326404578] [2024-06-28 02:23:33,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326404578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:33,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:33,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:33,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084400486] [2024-06-28 02:23:33,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:33,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:33,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:33,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:33,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 228 transitions, 2766 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:33,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:33,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:33,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:33,974 INFO L124 PetriNetUnfolderBase]: 615/1097 cut-off events. [2024-06-28 02:23:33,974 INFO L125 PetriNetUnfolderBase]: For 55566/55566 co-relation queries the response was YES. [2024-06-28 02:23:33,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7765 conditions, 1097 events. 615/1097 cut-off events. For 55566/55566 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5583 event pairs, 100 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 7652. Up to 951 conditions per place. [2024-06-28 02:23:33,982 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 199 selfloop transitions, 43 changer transitions 0/244 dead transitions. [2024-06-28 02:23:33,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 244 transitions, 3326 flow [2024-06-28 02:23:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:23:33,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 02:23:33,982 INFO L175 Difference]: Start difference. First operand has 249 places, 228 transitions, 2766 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:23:33,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 244 transitions, 3326 flow [2024-06-28 02:23:34,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 244 transitions, 3234 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:34,133 INFO L231 Difference]: Finished difference. Result has 251 places, 229 transitions, 2799 flow [2024-06-28 02:23:34,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2799, PETRI_PLACES=251, PETRI_TRANSITIONS=229} [2024-06-28 02:23:34,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 02:23:34,133 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 229 transitions, 2799 flow [2024-06-28 02:23:34,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:34,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:34,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:34,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:23:34,134 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:34,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1561707148, now seen corresponding path program 1 times [2024-06-28 02:23:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:34,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036498884] [2024-06-28 02:23:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036498884] [2024-06-28 02:23:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036498884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885872387] [2024-06-28 02:23:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:34,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:35,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:35,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 229 transitions, 2799 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:35,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:35,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:35,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:35,516 INFO L124 PetriNetUnfolderBase]: 629/1120 cut-off events. [2024-06-28 02:23:35,516 INFO L125 PetriNetUnfolderBase]: For 58595/58595 co-relation queries the response was YES. [2024-06-28 02:23:35,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8087 conditions, 1120 events. 629/1120 cut-off events. For 58595/58595 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5725 event pairs, 106 based on Foata normal form. 1/1119 useless extension candidates. Maximal degree in co-relation 7973. Up to 955 conditions per place. [2024-06-28 02:23:35,526 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 199 selfloop transitions, 53 changer transitions 0/254 dead transitions. [2024-06-28 02:23:35,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 254 transitions, 3687 flow [2024-06-28 02:23:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:23:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:23:35,527 INFO L175 Difference]: Start difference. First operand has 251 places, 229 transitions, 2799 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:23:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 254 transitions, 3687 flow [2024-06-28 02:23:35,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 254 transitions, 3565 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:35,677 INFO L231 Difference]: Finished difference. Result has 256 places, 238 transitions, 3044 flow [2024-06-28 02:23:35,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3044, PETRI_PLACES=256, PETRI_TRANSITIONS=238} [2024-06-28 02:23:35,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 02:23:35,678 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 238 transitions, 3044 flow [2024-06-28 02:23:35,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:35,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:35,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:35,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:23:35,678 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:35,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash 19086388, now seen corresponding path program 2 times [2024-06-28 02:23:35,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:35,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936748261] [2024-06-28 02:23:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:35,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:36,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:36,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936748261] [2024-06-28 02:23:36,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936748261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:36,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:36,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:36,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853212808] [2024-06-28 02:23:36,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:36,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:36,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:36,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:36,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:36,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:36,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 238 transitions, 3044 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:36,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:36,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:36,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:37,111 INFO L124 PetriNetUnfolderBase]: 632/1125 cut-off events. [2024-06-28 02:23:37,111 INFO L125 PetriNetUnfolderBase]: For 60198/60198 co-relation queries the response was YES. [2024-06-28 02:23:37,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8274 conditions, 1125 events. 632/1125 cut-off events. For 60198/60198 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5737 event pairs, 99 based on Foata normal form. 1/1125 useless extension candidates. Maximal degree in co-relation 8156. Up to 966 conditions per place. [2024-06-28 02:23:37,120 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 54 changer transitions 0/255 dead transitions. [2024-06-28 02:23:37,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 255 transitions, 3669 flow [2024-06-28 02:23:37,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:23:37,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 02:23:37,122 INFO L175 Difference]: Start difference. First operand has 256 places, 238 transitions, 3044 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:23:37,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 255 transitions, 3669 flow [2024-06-28 02:23:37,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 255 transitions, 3591 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:37,295 INFO L231 Difference]: Finished difference. Result has 263 places, 240 transitions, 3161 flow [2024-06-28 02:23:37,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3161, PETRI_PLACES=263, PETRI_TRANSITIONS=240} [2024-06-28 02:23:37,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-28 02:23:37,296 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 240 transitions, 3161 flow [2024-06-28 02:23:37,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:37,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:37,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:37,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:23:37,296 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:37,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1561827304, now seen corresponding path program 3 times [2024-06-28 02:23:37,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:37,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25171159] [2024-06-28 02:23:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:37,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:37,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25171159] [2024-06-28 02:23:37,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25171159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:37,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:37,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:37,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857311194] [2024-06-28 02:23:37,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:37,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:37,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:37,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:37,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:38,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:38,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 240 transitions, 3161 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:38,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:38,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:38,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:38,438 INFO L124 PetriNetUnfolderBase]: 636/1133 cut-off events. [2024-06-28 02:23:38,438 INFO L125 PetriNetUnfolderBase]: For 64954/64954 co-relation queries the response was YES. [2024-06-28 02:23:38,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 1133 events. 636/1133 cut-off events. For 64954/64954 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5798 event pairs, 103 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 8355. Up to 999 conditions per place. [2024-06-28 02:23:38,450 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 218 selfloop transitions, 36 changer transitions 0/256 dead transitions. [2024-06-28 02:23:38,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 256 transitions, 3739 flow [2024-06-28 02:23:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:23:38,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:23:38,451 INFO L175 Difference]: Start difference. First operand has 263 places, 240 transitions, 3161 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:23:38,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 256 transitions, 3739 flow [2024-06-28 02:23:38,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 256 transitions, 3589 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:38,633 INFO L231 Difference]: Finished difference. Result has 265 places, 241 transitions, 3123 flow [2024-06-28 02:23:38,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3123, PETRI_PLACES=265, PETRI_TRANSITIONS=241} [2024-06-28 02:23:38,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 02:23:38,633 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 241 transitions, 3123 flow [2024-06-28 02:23:38,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:38,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:38,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:23:38,634 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:38,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1549224418, now seen corresponding path program 4 times [2024-06-28 02:23:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:38,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856942287] [2024-06-28 02:23:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:39,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:39,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856942287] [2024-06-28 02:23:39,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856942287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:39,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:39,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086686685] [2024-06-28 02:23:39,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:39,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:39,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:39,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:39,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 241 transitions, 3123 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:39,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:39,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:39,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:39,827 INFO L124 PetriNetUnfolderBase]: 640/1141 cut-off events. [2024-06-28 02:23:39,828 INFO L125 PetriNetUnfolderBase]: For 65347/65347 co-relation queries the response was YES. [2024-06-28 02:23:39,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8478 conditions, 1141 events. 640/1141 cut-off events. For 65347/65347 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5861 event pairs, 103 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 8357. Up to 998 conditions per place. [2024-06-28 02:23:39,837 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 42 changer transitions 0/257 dead transitions. [2024-06-28 02:23:39,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 257 transitions, 3709 flow [2024-06-28 02:23:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:23:39,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:23:39,838 INFO L175 Difference]: Start difference. First operand has 265 places, 241 transitions, 3123 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:23:39,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 257 transitions, 3709 flow [2024-06-28 02:23:40,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 257 transitions, 3607 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:40,043 INFO L231 Difference]: Finished difference. Result has 267 places, 242 transitions, 3147 flow [2024-06-28 02:23:40,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3147, PETRI_PLACES=267, PETRI_TRANSITIONS=242} [2024-06-28 02:23:40,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 02:23:40,043 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 242 transitions, 3147 flow [2024-06-28 02:23:40,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:40,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:40,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:40,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:23:40,044 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:40,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:40,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1634054394, now seen corresponding path program 5 times [2024-06-28 02:23:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:40,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2192349] [2024-06-28 02:23:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:40,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:40,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:40,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2192349] [2024-06-28 02:23:40,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2192349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:40,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:40,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:40,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607540445] [2024-06-28 02:23:40,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:40,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:40,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:40,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:40,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:40,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 242 transitions, 3147 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:40,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:40,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:41,173 INFO L124 PetriNetUnfolderBase]: 644/1149 cut-off events. [2024-06-28 02:23:41,173 INFO L125 PetriNetUnfolderBase]: For 67533/67533 co-relation queries the response was YES. [2024-06-28 02:23:41,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8555 conditions, 1149 events. 644/1149 cut-off events. For 67533/67533 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5909 event pairs, 71 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 8433. Up to 921 conditions per place. [2024-06-28 02:23:41,184 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 223 selfloop transitions, 35 changer transitions 0/260 dead transitions. [2024-06-28 02:23:41,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 260 transitions, 3741 flow [2024-06-28 02:23:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 02:23:41,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 02:23:41,185 INFO L175 Difference]: Start difference. First operand has 267 places, 242 transitions, 3147 flow. Second operand 10 states and 102 transitions. [2024-06-28 02:23:41,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 260 transitions, 3741 flow [2024-06-28 02:23:41,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 260 transitions, 3625 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:41,390 INFO L231 Difference]: Finished difference. Result has 269 places, 243 transitions, 3145 flow [2024-06-28 02:23:41,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3145, PETRI_PLACES=269, PETRI_TRANSITIONS=243} [2024-06-28 02:23:41,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 02:23:41,390 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 243 transitions, 3145 flow [2024-06-28 02:23:41,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:41,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:41,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:41,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:23:41,391 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:41,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:41,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1587830336, now seen corresponding path program 6 times [2024-06-28 02:23:41,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:41,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275377385] [2024-06-28 02:23:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:41,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275377385] [2024-06-28 02:23:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275377385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:42,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:42,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:42,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479091171] [2024-06-28 02:23:42,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:42,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:42,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:42,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 243 transitions, 3145 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:42,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:42,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:42,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:42,463 INFO L124 PetriNetUnfolderBase]: 648/1157 cut-off events. [2024-06-28 02:23:42,464 INFO L125 PetriNetUnfolderBase]: For 69517/69517 co-relation queries the response was YES. [2024-06-28 02:23:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8617 conditions, 1157 events. 648/1157 cut-off events. For 69517/69517 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5966 event pairs, 114 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 8494. Up to 1015 conditions per place. [2024-06-28 02:23:42,474 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 224 selfloop transitions, 35 changer transitions 0/261 dead transitions. [2024-06-28 02:23:42,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 261 transitions, 3747 flow [2024-06-28 02:23:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:23:42,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:23:42,475 INFO L175 Difference]: Start difference. First operand has 269 places, 243 transitions, 3145 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:23:42,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 261 transitions, 3747 flow [2024-06-28 02:23:42,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 261 transitions, 3643 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:42,677 INFO L231 Difference]: Finished difference. Result has 271 places, 244 transitions, 3157 flow [2024-06-28 02:23:42,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3157, PETRI_PLACES=271, PETRI_TRANSITIONS=244} [2024-06-28 02:23:42,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-28 02:23:42,678 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 244 transitions, 3157 flow [2024-06-28 02:23:42,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:42,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:42,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:42,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:23:42,678 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:42,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1587715016, now seen corresponding path program 7 times [2024-06-28 02:23:42,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:42,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102816150] [2024-06-28 02:23:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:43,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102816150] [2024-06-28 02:23:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102816150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:43,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963163676] [2024-06-28 02:23:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:43,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:43,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:43,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 244 transitions, 3157 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:43,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:43,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:43,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:43,745 INFO L124 PetriNetUnfolderBase]: 652/1165 cut-off events. [2024-06-28 02:23:43,746 INFO L125 PetriNetUnfolderBase]: For 71483/71483 co-relation queries the response was YES. [2024-06-28 02:23:43,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1165 events. 652/1165 cut-off events. For 71483/71483 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6045 event pairs, 114 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 8550. Up to 1030 conditions per place. [2024-06-28 02:23:43,756 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 222 selfloop transitions, 37 changer transitions 0/261 dead transitions. [2024-06-28 02:23:43,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 261 transitions, 3761 flow [2024-06-28 02:23:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:23:43,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:23:43,757 INFO L175 Difference]: Start difference. First operand has 271 places, 244 transitions, 3157 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:23:43,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 261 transitions, 3761 flow [2024-06-28 02:23:43,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 261 transitions, 3655 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:43,965 INFO L231 Difference]: Finished difference. Result has 273 places, 245 transitions, 3173 flow [2024-06-28 02:23:43,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3173, PETRI_PLACES=273, PETRI_TRANSITIONS=245} [2024-06-28 02:23:43,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 02:23:43,966 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 245 transitions, 3173 flow [2024-06-28 02:23:43,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:43,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:43,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:43,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:23:43,966 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:43,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1587710180, now seen corresponding path program 3 times [2024-06-28 02:23:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:43,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42747046] [2024-06-28 02:23:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:43,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:45,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:45,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42747046] [2024-06-28 02:23:45,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42747046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:45,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:45,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63654670] [2024-06-28 02:23:45,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:45,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:45,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 245 transitions, 3173 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:45,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:45,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:45,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:46,117 INFO L124 PetriNetUnfolderBase]: 655/1170 cut-off events. [2024-06-28 02:23:46,118 INFO L125 PetriNetUnfolderBase]: For 70516/70516 co-relation queries the response was YES. [2024-06-28 02:23:46,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8723 conditions, 1170 events. 655/1170 cut-off events. For 70516/70516 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6073 event pairs, 108 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 8598. Up to 1029 conditions per place. [2024-06-28 02:23:46,128 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 219 selfloop transitions, 42 changer transitions 0/263 dead transitions. [2024-06-28 02:23:46,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 263 transitions, 3824 flow [2024-06-28 02:23:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:23:46,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 02:23:46,129 INFO L175 Difference]: Start difference. First operand has 273 places, 245 transitions, 3173 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:23:46,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 263 transitions, 3824 flow [2024-06-28 02:23:46,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 263 transitions, 3712 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:46,354 INFO L231 Difference]: Finished difference. Result has 275 places, 247 transitions, 3234 flow [2024-06-28 02:23:46,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3234, PETRI_PLACES=275, PETRI_TRANSITIONS=247} [2024-06-28 02:23:46,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 02:23:46,355 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 247 transitions, 3234 flow [2024-06-28 02:23:46,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:46,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:46,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:46,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:23:46,355 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:46,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1587710366, now seen corresponding path program 8 times [2024-06-28 02:23:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530829308] [2024-06-28 02:23:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:46,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:47,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:47,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530829308] [2024-06-28 02:23:47,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530829308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:47,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:47,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635477804] [2024-06-28 02:23:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:47,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:47,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:47,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 247 transitions, 3234 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:47,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:47,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:47,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:47,458 INFO L124 PetriNetUnfolderBase]: 659/1178 cut-off events. [2024-06-28 02:23:47,458 INFO L125 PetriNetUnfolderBase]: For 75156/75156 co-relation queries the response was YES. [2024-06-28 02:23:47,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8804 conditions, 1178 events. 659/1178 cut-off events. For 75156/75156 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6132 event pairs, 113 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 8678. Up to 1040 conditions per place. [2024-06-28 02:23:47,470 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 222 selfloop transitions, 40 changer transitions 0/264 dead transitions. [2024-06-28 02:23:47,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 264 transitions, 3850 flow [2024-06-28 02:23:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:23:47,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:23:47,471 INFO L175 Difference]: Start difference. First operand has 275 places, 247 transitions, 3234 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:23:47,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 264 transitions, 3850 flow [2024-06-28 02:23:47,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 264 transitions, 3714 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:47,673 INFO L231 Difference]: Finished difference. Result has 277 places, 248 transitions, 3229 flow [2024-06-28 02:23:47,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3229, PETRI_PLACES=277, PETRI_TRANSITIONS=248} [2024-06-28 02:23:47,674 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 02:23:47,674 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 248 transitions, 3229 flow [2024-06-28 02:23:47,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:47,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:47,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:47,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:23:47,674 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:47,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:47,674 INFO L85 PathProgramCache]: Analyzing trace with hash 916703862, now seen corresponding path program 9 times [2024-06-28 02:23:47,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:47,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383329133] [2024-06-28 02:23:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:47,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:48,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383329133] [2024-06-28 02:23:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383329133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:48,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:48,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:48,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528427763] [2024-06-28 02:23:48,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:48,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:48,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:48,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 248 transitions, 3229 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:48,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:48,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:48,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:48,904 INFO L124 PetriNetUnfolderBase]: 663/1188 cut-off events. [2024-06-28 02:23:48,904 INFO L125 PetriNetUnfolderBase]: For 78252/78252 co-relation queries the response was YES. [2024-06-28 02:23:48,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8895 conditions, 1188 events. 663/1188 cut-off events. For 78252/78252 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6219 event pairs, 106 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 8768. Up to 1041 conditions per place. [2024-06-28 02:23:48,915 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 40 changer transitions 0/265 dead transitions. [2024-06-28 02:23:48,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 265 transitions, 3851 flow [2024-06-28 02:23:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:23:48,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 02:23:48,916 INFO L175 Difference]: Start difference. First operand has 277 places, 248 transitions, 3229 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:23:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 265 transitions, 3851 flow [2024-06-28 02:23:49,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 265 transitions, 3732 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:49,178 INFO L231 Difference]: Finished difference. Result has 279 places, 249 transitions, 3242 flow [2024-06-28 02:23:49,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3110, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3242, PETRI_PLACES=279, PETRI_TRANSITIONS=249} [2024-06-28 02:23:49,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 02:23:49,179 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 249 transitions, 3242 flow [2024-06-28 02:23:49,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:49,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:49,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:49,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:23:49,179 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:49,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:49,179 INFO L85 PathProgramCache]: Analyzing trace with hash 750650006, now seen corresponding path program 1 times [2024-06-28 02:23:49,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:49,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115751237] [2024-06-28 02:23:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:49,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115751237] [2024-06-28 02:23:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115751237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:50,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508315719] [2024-06-28 02:23:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:50,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:50,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:50,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 249 transitions, 3242 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:50,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:50,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:50,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:50,888 INFO L124 PetriNetUnfolderBase]: 669/1198 cut-off events. [2024-06-28 02:23:50,888 INFO L125 PetriNetUnfolderBase]: For 79809/79809 co-relation queries the response was YES. [2024-06-28 02:23:50,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8953 conditions, 1198 events. 669/1198 cut-off events. For 79809/79809 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6286 event pairs, 111 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 8825. Up to 1056 conditions per place. [2024-06-28 02:23:50,900 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 226 selfloop transitions, 41 changer transitions 0/269 dead transitions. [2024-06-28 02:23:50,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 269 transitions, 3896 flow [2024-06-28 02:23:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:23:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:23:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:23:50,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 02:23:50,900 INFO L175 Difference]: Start difference. First operand has 279 places, 249 transitions, 3242 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:23:50,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 269 transitions, 3896 flow [2024-06-28 02:23:51,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 269 transitions, 3774 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:51,170 INFO L231 Difference]: Finished difference. Result has 282 places, 251 transitions, 3271 flow [2024-06-28 02:23:51,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3120, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=282, PETRI_TRANSITIONS=251} [2024-06-28 02:23:51,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-28 02:23:51,171 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 251 transitions, 3271 flow [2024-06-28 02:23:51,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:51,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:51,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:51,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:23:51,171 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:51,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:51,172 INFO L85 PathProgramCache]: Analyzing trace with hash 923132952, now seen corresponding path program 10 times [2024-06-28 02:23:51,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:51,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974891716] [2024-06-28 02:23:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:51,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974891716] [2024-06-28 02:23:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974891716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:23:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123821257] [2024-06-28 02:23:51,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:51,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:23:51,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:23:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:23:51,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:51,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 251 transitions, 3271 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:51,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:51,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:51,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:52,305 INFO L124 PetriNetUnfolderBase]: 673/1206 cut-off events. [2024-06-28 02:23:52,305 INFO L125 PetriNetUnfolderBase]: For 81905/81905 co-relation queries the response was YES. [2024-06-28 02:23:52,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9017 conditions, 1206 events. 673/1206 cut-off events. For 81905/81905 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6355 event pairs, 104 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 8888. Up to 1034 conditions per place. [2024-06-28 02:23:52,317 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 46 changer transitions 0/268 dead transitions. [2024-06-28 02:23:52,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 268 transitions, 3901 flow [2024-06-28 02:23:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:23:52,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:23:52,318 INFO L175 Difference]: Start difference. First operand has 282 places, 251 transitions, 3271 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:23:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 268 transitions, 3901 flow [2024-06-28 02:23:52,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 268 transitions, 3772 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:52,570 INFO L231 Difference]: Finished difference. Result has 283 places, 252 transitions, 3288 flow [2024-06-28 02:23:52,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3288, PETRI_PLACES=283, PETRI_TRANSITIONS=252} [2024-06-28 02:23:52,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-28 02:23:52,571 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 252 transitions, 3288 flow [2024-06-28 02:23:52,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:52,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:52,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:52,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:23:52,571 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:52,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash 916699212, now seen corresponding path program 11 times [2024-06-28 02:23:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131051032] [2024-06-28 02:23:52,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:53,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:53,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131051032] [2024-06-28 02:23:53,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131051032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:53,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:53,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:53,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604249526] [2024-06-28 02:23:53,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:53,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:53,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:53,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 252 transitions, 3288 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:53,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:53,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:53,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:53,730 INFO L124 PetriNetUnfolderBase]: 677/1214 cut-off events. [2024-06-28 02:23:53,730 INFO L125 PetriNetUnfolderBase]: For 84658/84658 co-relation queries the response was YES. [2024-06-28 02:23:53,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 1214 events. 677/1214 cut-off events. For 84658/84658 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6400 event pairs, 106 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 9001. Up to 1067 conditions per place. [2024-06-28 02:23:53,741 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 39 changer transitions 0/269 dead transitions. [2024-06-28 02:23:53,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 269 transitions, 3918 flow [2024-06-28 02:23:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:23:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:23:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:23:53,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:23:53,742 INFO L175 Difference]: Start difference. First operand has 283 places, 252 transitions, 3288 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:23:53,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 269 transitions, 3918 flow [2024-06-28 02:23:54,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 3782 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:54,004 INFO L231 Difference]: Finished difference. Result has 285 places, 253 transitions, 3286 flow [2024-06-28 02:23:54,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3152, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3286, PETRI_PLACES=285, PETRI_TRANSITIONS=253} [2024-06-28 02:23:54,004 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 02:23:54,004 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 253 transitions, 3286 flow [2024-06-28 02:23:54,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:54,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:54,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:54,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:23:54,005 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:54,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:54,005 INFO L85 PathProgramCache]: Analyzing trace with hash 916883786, now seen corresponding path program 2 times [2024-06-28 02:23:54,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:54,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871487643] [2024-06-28 02:23:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:54,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871487643] [2024-06-28 02:23:55,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871487643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086839277] [2024-06-28 02:23:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:55,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:55,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:55,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 253 transitions, 3286 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:55,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:55,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:55,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:55,752 INFO L124 PetriNetUnfolderBase]: 683/1224 cut-off events. [2024-06-28 02:23:55,752 INFO L125 PetriNetUnfolderBase]: For 86118/86118 co-relation queries the response was YES. [2024-06-28 02:23:55,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9154 conditions, 1224 events. 683/1224 cut-off events. For 86118/86118 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6458 event pairs, 108 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 9023. Up to 1067 conditions per place. [2024-06-28 02:23:55,762 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 228 selfloop transitions, 43 changer transitions 0/273 dead transitions. [2024-06-28 02:23:55,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 273 transitions, 3954 flow [2024-06-28 02:23:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:23:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:23:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:23:55,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 02:23:55,763 INFO L175 Difference]: Start difference. First operand has 285 places, 253 transitions, 3286 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:23:55,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 273 transitions, 3954 flow [2024-06-28 02:23:56,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 273 transitions, 3830 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:56,035 INFO L231 Difference]: Finished difference. Result has 288 places, 255 transitions, 3321 flow [2024-06-28 02:23:56,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3162, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3321, PETRI_PLACES=288, PETRI_TRANSITIONS=255} [2024-06-28 02:23:56,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 02:23:56,036 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 255 transitions, 3321 flow [2024-06-28 02:23:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:56,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:56,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:56,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:23:56,036 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:56,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash 923378906, now seen corresponding path program 3 times [2024-06-28 02:23:56,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:56,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664019064] [2024-06-28 02:23:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664019064] [2024-06-28 02:23:57,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664019064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:57,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:57,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:23:57,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39187732] [2024-06-28 02:23:57,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:57,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:23:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:23:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:23:57,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:57,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 255 transitions, 3321 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:57,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:57,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:57,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:58,345 INFO L124 PetriNetUnfolderBase]: 699/1250 cut-off events. [2024-06-28 02:23:58,345 INFO L125 PetriNetUnfolderBase]: For 94479/94479 co-relation queries the response was YES. [2024-06-28 02:23:58,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 1250 events. 699/1250 cut-off events. For 94479/94479 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6598 event pairs, 106 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 9406. Up to 995 conditions per place. [2024-06-28 02:23:58,357 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 212 selfloop transitions, 66 changer transitions 0/280 dead transitions. [2024-06-28 02:23:58,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 280 transitions, 4241 flow [2024-06-28 02:23:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:23:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:23:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:23:58,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:23:58,358 INFO L175 Difference]: Start difference. First operand has 288 places, 255 transitions, 3321 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:23:58,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 280 transitions, 4241 flow [2024-06-28 02:23:58,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 280 transitions, 4104 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:58,619 INFO L231 Difference]: Finished difference. Result has 291 places, 259 transitions, 3462 flow [2024-06-28 02:23:58,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3462, PETRI_PLACES=291, PETRI_TRANSITIONS=259} [2024-06-28 02:23:58,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-28 02:23:58,620 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 259 transitions, 3462 flow [2024-06-28 02:23:58,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:58,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:58,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:58,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:23:58,620 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:23:58,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 923379216, now seen corresponding path program 1 times [2024-06-28 02:23:58,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:58,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483005880] [2024-06-28 02:23:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483005880] [2024-06-28 02:23:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483005880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:59,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:59,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:23:59,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964266742] [2024-06-28 02:23:59,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:59,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:23:59,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:23:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:23:59,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:23:59,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 259 transitions, 3462 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:23:59,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:59,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:23:59,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:00,345 INFO L124 PetriNetUnfolderBase]: 723/1302 cut-off events. [2024-06-28 02:24:00,345 INFO L125 PetriNetUnfolderBase]: For 133387/133387 co-relation queries the response was YES. [2024-06-28 02:24:00,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9932 conditions, 1302 events. 723/1302 cut-off events. For 133387/133387 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6976 event pairs, 127 based on Foata normal form. 14/1312 useless extension candidates. Maximal degree in co-relation 9799. Up to 1090 conditions per place. [2024-06-28 02:24:00,357 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 228 selfloop transitions, 45 changer transitions 9/284 dead transitions. [2024-06-28 02:24:00,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 284 transitions, 4212 flow [2024-06-28 02:24:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:24:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:24:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:24:00,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:24:00,358 INFO L175 Difference]: Start difference. First operand has 291 places, 259 transitions, 3462 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:24:00,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 284 transitions, 4212 flow [2024-06-28 02:24:00,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 284 transitions, 4065 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:00,646 INFO L231 Difference]: Finished difference. Result has 295 places, 258 transitions, 3400 flow [2024-06-28 02:24:00,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3315, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3400, PETRI_PLACES=295, PETRI_TRANSITIONS=258} [2024-06-28 02:24:00,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-28 02:24:00,646 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 258 transitions, 3400 flow [2024-06-28 02:24:00,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:00,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:00,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:00,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:24:00,647 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:00,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:00,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1952407398, now seen corresponding path program 4 times [2024-06-28 02:24:00,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:00,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954617803] [2024-06-28 02:24:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:00,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:01,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:01,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954617803] [2024-06-28 02:24:01,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954617803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:01,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:01,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:01,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033371852] [2024-06-28 02:24:01,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:01,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:01,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:01,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:01,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 258 transitions, 3400 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:01,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:01,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:01,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:02,265 INFO L124 PetriNetUnfolderBase]: 707/1276 cut-off events. [2024-06-28 02:24:02,265 INFO L125 PetriNetUnfolderBase]: For 92508/92508 co-relation queries the response was YES. [2024-06-28 02:24:02,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9556 conditions, 1276 events. 707/1276 cut-off events. For 92508/92508 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6809 event pairs, 110 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 9421. Up to 1061 conditions per place. [2024-06-28 02:24:02,277 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 220 selfloop transitions, 54 changer transitions 0/276 dead transitions. [2024-06-28 02:24:02,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 276 transitions, 4010 flow [2024-06-28 02:24:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:24:02,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:24:02,278 INFO L175 Difference]: Start difference. First operand has 295 places, 258 transitions, 3400 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:24:02,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 276 transitions, 4010 flow [2024-06-28 02:24:02,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 276 transitions, 3876 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:02,599 INFO L231 Difference]: Finished difference. Result has 297 places, 258 transitions, 3379 flow [2024-06-28 02:24:02,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3379, PETRI_PLACES=297, PETRI_TRANSITIONS=258} [2024-06-28 02:24:02,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 02:24:02,600 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 258 transitions, 3379 flow [2024-06-28 02:24:02,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:02,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:02,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:02,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:24:02,600 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:02,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:02,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1992726314, now seen corresponding path program 12 times [2024-06-28 02:24:02,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:02,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139985258] [2024-06-28 02:24:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:02,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139985258] [2024-06-28 02:24:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139985258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:03,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:03,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:03,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689972197] [2024-06-28 02:24:03,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:03,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:03,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:03,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:03,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:03,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 258 transitions, 3379 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:03,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:03,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:03,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:03,764 INFO L124 PetriNetUnfolderBase]: 711/1282 cut-off events. [2024-06-28 02:24:03,764 INFO L125 PetriNetUnfolderBase]: For 94881/94881 co-relation queries the response was YES. [2024-06-28 02:24:03,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9663 conditions, 1282 events. 711/1282 cut-off events. For 94881/94881 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6847 event pairs, 89 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 9527. Up to 1022 conditions per place. [2024-06-28 02:24:03,777 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 230 selfloop transitions, 41 changer transitions 0/273 dead transitions. [2024-06-28 02:24:03,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 4005 flow [2024-06-28 02:24:03,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 02:24:03,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:24:03,780 INFO L175 Difference]: Start difference. First operand has 297 places, 258 transitions, 3379 flow. Second operand 9 states and 93 transitions. [2024-06-28 02:24:03,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 4005 flow [2024-06-28 02:24:04,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 273 transitions, 3876 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:04,104 INFO L231 Difference]: Finished difference. Result has 296 places, 259 transitions, 3394 flow [2024-06-28 02:24:04,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3394, PETRI_PLACES=296, PETRI_TRANSITIONS=259} [2024-06-28 02:24:04,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 02:24:04,105 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 259 transitions, 3394 flow [2024-06-28 02:24:04,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:04,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:04,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:04,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:24:04,105 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:04,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1701143204, now seen corresponding path program 13 times [2024-06-28 02:24:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:04,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407743848] [2024-06-28 02:24:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:05,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:05,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407743848] [2024-06-28 02:24:05,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407743848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:05,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:05,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988959620] [2024-06-28 02:24:05,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:05,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:05,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:05,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:05,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:05,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:05,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 259 transitions, 3394 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:05,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:05,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:05,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:05,599 INFO L124 PetriNetUnfolderBase]: 715/1290 cut-off events. [2024-06-28 02:24:05,600 INFO L125 PetriNetUnfolderBase]: For 98213/98213 co-relation queries the response was YES. [2024-06-28 02:24:05,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 1290 events. 715/1290 cut-off events. For 98213/98213 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6924 event pairs, 137 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9632. Up to 1146 conditions per place. [2024-06-28 02:24:05,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 41 changer transitions 0/273 dead transitions. [2024-06-28 02:24:05,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 4034 flow [2024-06-28 02:24:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:24:05,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:24:05,612 INFO L175 Difference]: Start difference. First operand has 296 places, 259 transitions, 3394 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:24:05,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 4034 flow [2024-06-28 02:24:05,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 273 transitions, 3900 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:05,952 INFO L231 Difference]: Finished difference. Result has 299 places, 260 transitions, 3403 flow [2024-06-28 02:24:05,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3403, PETRI_PLACES=299, PETRI_TRANSITIONS=260} [2024-06-28 02:24:05,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 02:24:05,952 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 260 transitions, 3403 flow [2024-06-28 02:24:05,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:05,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:05,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:05,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:24:05,952 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:05,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1849770514, now seen corresponding path program 4 times [2024-06-28 02:24:05,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429833937] [2024-06-28 02:24:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:06,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429833937] [2024-06-28 02:24:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429833937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449466100] [2024-06-28 02:24:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:06,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:06,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:06,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:07,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:07,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 260 transitions, 3403 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:07,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:07,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:07,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:07,552 INFO L124 PetriNetUnfolderBase]: 713/1287 cut-off events. [2024-06-28 02:24:07,553 INFO L125 PetriNetUnfolderBase]: For 88068/88068 co-relation queries the response was YES. [2024-06-28 02:24:07,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9507 conditions, 1287 events. 713/1287 cut-off events. For 88068/88068 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6920 event pairs, 118 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 9369. Up to 1088 conditions per place. [2024-06-28 02:24:07,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 203 selfloop transitions, 70 changer transitions 0/275 dead transitions. [2024-06-28 02:24:07,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 275 transitions, 4066 flow [2024-06-28 02:24:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:24:07,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:24:07,566 INFO L175 Difference]: Start difference. First operand has 299 places, 260 transitions, 3403 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:24:07,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 275 transitions, 4066 flow [2024-06-28 02:24:07,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 275 transitions, 3871 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-28 02:24:07,885 INFO L231 Difference]: Finished difference. Result has 297 places, 262 transitions, 3445 flow [2024-06-28 02:24:07,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3445, PETRI_PLACES=297, PETRI_TRANSITIONS=262} [2024-06-28 02:24:07,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 02:24:07,887 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 262 transitions, 3445 flow [2024-06-28 02:24:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:07,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:07,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:07,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:24:07,888 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:07,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1701147854, now seen corresponding path program 14 times [2024-06-28 02:24:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:07,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597096614] [2024-06-28 02:24:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:07,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:08,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:08,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597096614] [2024-06-28 02:24:08,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597096614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:08,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:08,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840521453] [2024-06-28 02:24:08,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:08,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:08,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:08,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 262 transitions, 3445 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:08,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:08,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:09,176 INFO L124 PetriNetUnfolderBase]: 717/1295 cut-off events. [2024-06-28 02:24:09,176 INFO L125 PetriNetUnfolderBase]: For 93073/93073 co-relation queries the response was YES. [2024-06-28 02:24:09,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1295 events. 717/1295 cut-off events. For 93073/93073 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6984 event pairs, 116 based on Foata normal form. 2/1296 useless extension candidates. Maximal degree in co-relation 9436. Up to 1124 conditions per place. [2024-06-28 02:24:09,188 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 223 selfloop transitions, 51 changer transitions 0/276 dead transitions. [2024-06-28 02:24:09,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 276 transitions, 4079 flow [2024-06-28 02:24:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:24:09,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 02:24:09,189 INFO L175 Difference]: Start difference. First operand has 297 places, 262 transitions, 3445 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:24:09,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 276 transitions, 4079 flow [2024-06-28 02:24:09,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 276 transitions, 3899 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:09,513 INFO L231 Difference]: Finished difference. Result has 299 places, 263 transitions, 3427 flow [2024-06-28 02:24:09,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3427, PETRI_PLACES=299, PETRI_TRANSITIONS=263} [2024-06-28 02:24:09,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 02:24:09,514 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 263 transitions, 3427 flow [2024-06-28 02:24:09,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:09,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:09,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:09,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:24:09,514 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:09,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash 131306652, now seen corresponding path program 15 times [2024-06-28 02:24:09,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:09,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771281543] [2024-06-28 02:24:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:09,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:10,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:10,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771281543] [2024-06-28 02:24:10,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771281543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:10,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:10,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:10,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329692238] [2024-06-28 02:24:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:10,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:10,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:10,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 263 transitions, 3427 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:10,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:10,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:10,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:10,675 INFO L124 PetriNetUnfolderBase]: 721/1303 cut-off events. [2024-06-28 02:24:10,675 INFO L125 PetriNetUnfolderBase]: For 94357/94357 co-relation queries the response was YES. [2024-06-28 02:24:10,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9617 conditions, 1303 events. 721/1303 cut-off events. For 94357/94357 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7037 event pairs, 130 based on Foata normal form. 2/1304 useless extension candidates. Maximal degree in co-relation 9480. Up to 1147 conditions per place. [2024-06-28 02:24:10,687 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 41 changer transitions 0/277 dead transitions. [2024-06-28 02:24:10,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 277 transitions, 4061 flow [2024-06-28 02:24:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:24:10,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 02:24:10,688 INFO L175 Difference]: Start difference. First operand has 299 places, 263 transitions, 3427 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:24:10,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 277 transitions, 4061 flow [2024-06-28 02:24:11,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 277 transitions, 3909 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:11,038 INFO L231 Difference]: Finished difference. Result has 301 places, 264 transitions, 3419 flow [2024-06-28 02:24:11,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3419, PETRI_PLACES=301, PETRI_TRANSITIONS=264} [2024-06-28 02:24:11,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 02:24:11,038 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 264 transitions, 3419 flow [2024-06-28 02:24:11,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:11,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:11,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:11,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:24:11,039 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:11,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 716314120, now seen corresponding path program 16 times [2024-06-28 02:24:11,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054011843] [2024-06-28 02:24:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054011843] [2024-06-28 02:24:11,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054011843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:11,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:11,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:11,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290904707] [2024-06-28 02:24:11,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:11,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:11,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:11,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:11,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 264 transitions, 3419 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:11,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:11,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:11,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:12,222 INFO L124 PetriNetUnfolderBase]: 725/1311 cut-off events. [2024-06-28 02:24:12,222 INFO L125 PetriNetUnfolderBase]: For 94486/94486 co-relation queries the response was YES. [2024-06-28 02:24:12,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9630 conditions, 1311 events. 725/1311 cut-off events. For 94486/94486 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7094 event pairs, 103 based on Foata normal form. 2/1312 useless extension candidates. Maximal degree in co-relation 9492. Up to 1109 conditions per place. [2024-06-28 02:24:12,235 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 47 changer transitions 0/281 dead transitions. [2024-06-28 02:24:12,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 281 transitions, 4084 flow [2024-06-28 02:24:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:24:12,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:24:12,236 INFO L175 Difference]: Start difference. First operand has 301 places, 264 transitions, 3419 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:24:12,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 281 transitions, 4084 flow [2024-06-28 02:24:12,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 281 transitions, 3952 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:12,606 INFO L231 Difference]: Finished difference. Result has 303 places, 265 transitions, 3443 flow [2024-06-28 02:24:12,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3443, PETRI_PLACES=303, PETRI_TRANSITIONS=265} [2024-06-28 02:24:12,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-28 02:24:12,607 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 265 transitions, 3443 flow [2024-06-28 02:24:12,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:12,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:12,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:12,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:24:12,607 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:12,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash -632090834, now seen corresponding path program 17 times [2024-06-28 02:24:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226729183] [2024-06-28 02:24:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:13,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:13,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226729183] [2024-06-28 02:24:13,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226729183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:13,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:13,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:13,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095867051] [2024-06-28 02:24:13,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:13,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:13,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:13,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:13,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:13,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:13,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 265 transitions, 3443 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:13,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:13,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:13,899 INFO L124 PetriNetUnfolderBase]: 729/1319 cut-off events. [2024-06-28 02:24:13,899 INFO L125 PetriNetUnfolderBase]: For 94607/94607 co-relation queries the response was YES. [2024-06-28 02:24:13,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9689 conditions, 1319 events. 729/1319 cut-off events. For 94607/94607 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7159 event pairs, 135 based on Foata normal form. 2/1320 useless extension candidates. Maximal degree in co-relation 9550. Up to 1159 conditions per place. [2024-06-28 02:24:13,910 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 49 changer transitions 0/282 dead transitions. [2024-06-28 02:24:13,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 282 transitions, 4114 flow [2024-06-28 02:24:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 02:24:13,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 02:24:13,911 INFO L175 Difference]: Start difference. First operand has 303 places, 265 transitions, 3443 flow. Second operand 9 states and 100 transitions. [2024-06-28 02:24:13,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 282 transitions, 4114 flow [2024-06-28 02:24:14,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 282 transitions, 3970 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:14,313 INFO L231 Difference]: Finished difference. Result has 305 places, 266 transitions, 3459 flow [2024-06-28 02:24:14,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3459, PETRI_PLACES=305, PETRI_TRANSITIONS=266} [2024-06-28 02:24:14,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 02:24:14,314 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 266 transitions, 3459 flow [2024-06-28 02:24:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:14,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:14,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:14,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:24:14,314 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:14,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 716434276, now seen corresponding path program 5 times [2024-06-28 02:24:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:14,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061115116] [2024-06-28 02:24:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:15,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061115116] [2024-06-28 02:24:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061115116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:15,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:15,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:15,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248159503] [2024-06-28 02:24:15,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:15,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:15,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:15,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:15,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 266 transitions, 3459 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:15,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:15,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:15,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:15,844 INFO L124 PetriNetUnfolderBase]: 727/1316 cut-off events. [2024-06-28 02:24:15,844 INFO L125 PetriNetUnfolderBase]: For 86517/86517 co-relation queries the response was YES. [2024-06-28 02:24:15,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 1316 events. 727/1316 cut-off events. For 86517/86517 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7171 event pairs, 133 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 9332. Up to 1144 conditions per place. [2024-06-28 02:24:15,858 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 221 selfloop transitions, 61 changer transitions 0/284 dead transitions. [2024-06-28 02:24:15,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 4175 flow [2024-06-28 02:24:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:24:15,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:24:15,859 INFO L175 Difference]: Start difference. First operand has 305 places, 266 transitions, 3459 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:24:15,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 4175 flow [2024-06-28 02:24:16,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 284 transitions, 4029 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:16,244 INFO L231 Difference]: Finished difference. Result has 307 places, 268 transitions, 3540 flow [2024-06-28 02:24:16,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3540, PETRI_PLACES=307, PETRI_TRANSITIONS=268} [2024-06-28 02:24:16,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 02:24:16,245 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 268 transitions, 3540 flow [2024-06-28 02:24:16,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:16,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:16,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:16,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:24:16,245 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:16,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash -632086184, now seen corresponding path program 18 times [2024-06-28 02:24:16,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733735608] [2024-06-28 02:24:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:16,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:16,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733735608] [2024-06-28 02:24:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733735608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:16,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752139419] [2024-06-28 02:24:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:16,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:16,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:17,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:17,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 268 transitions, 3540 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:17,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:17,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:17,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:17,475 INFO L124 PetriNetUnfolderBase]: 731/1324 cut-off events. [2024-06-28 02:24:17,475 INFO L125 PetriNetUnfolderBase]: For 89827/89827 co-relation queries the response was YES. [2024-06-28 02:24:17,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9548 conditions, 1324 events. 731/1324 cut-off events. For 89827/89827 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7233 event pairs, 135 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 9407. Up to 1158 conditions per place. [2024-06-28 02:24:17,488 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 228 selfloop transitions, 55 changer transitions 0/285 dead transitions. [2024-06-28 02:24:17,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 285 transitions, 4219 flow [2024-06-28 02:24:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:24:17,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 02:24:17,489 INFO L175 Difference]: Start difference. First operand has 307 places, 268 transitions, 3540 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:24:17,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 285 transitions, 4219 flow [2024-06-28 02:24:17,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 285 transitions, 4041 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:17,867 INFO L231 Difference]: Finished difference. Result has 309 places, 269 transitions, 3534 flow [2024-06-28 02:24:17,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3534, PETRI_PLACES=309, PETRI_TRANSITIONS=269} [2024-06-28 02:24:17,867 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 02:24:17,867 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 269 transitions, 3534 flow [2024-06-28 02:24:17,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:17,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:17,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:17,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:24:17,868 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:17,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash 887136520, now seen corresponding path program 19 times [2024-06-28 02:24:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:17,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330256448] [2024-06-28 02:24:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330256448] [2024-06-28 02:24:18,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330256448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:18,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:18,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:18,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475224170] [2024-06-28 02:24:18,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:18,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:18,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:18,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 269 transitions, 3534 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:18,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:18,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:18,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:19,094 INFO L124 PetriNetUnfolderBase]: 735/1334 cut-off events. [2024-06-28 02:24:19,095 INFO L125 PetriNetUnfolderBase]: For 90717/90717 co-relation queries the response was YES. [2024-06-28 02:24:19,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9614 conditions, 1334 events. 735/1334 cut-off events. For 90717/90717 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7314 event pairs, 110 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 9472. Up to 1147 conditions per place. [2024-06-28 02:24:19,108 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 51 changer transitions 0/284 dead transitions. [2024-06-28 02:24:19,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 284 transitions, 4196 flow [2024-06-28 02:24:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:24:19,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 02:24:19,109 INFO L175 Difference]: Start difference. First operand has 309 places, 269 transitions, 3534 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:24:19,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 284 transitions, 4196 flow [2024-06-28 02:24:19,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 284 transitions, 4038 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:19,472 INFO L231 Difference]: Finished difference. Result has 311 places, 270 transitions, 3540 flow [2024-06-28 02:24:19,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3540, PETRI_PLACES=311, PETRI_TRANSITIONS=270} [2024-06-28 02:24:19,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-28 02:24:19,473 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 270 transitions, 3540 flow [2024-06-28 02:24:19,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:19,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:19,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:19,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:24:19,473 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:19,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:19,473 INFO L85 PathProgramCache]: Analyzing trace with hash 721082664, now seen corresponding path program 5 times [2024-06-28 02:24:19,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:19,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000053361] [2024-06-28 02:24:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:21,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000053361] [2024-06-28 02:24:21,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000053361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:21,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:21,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:21,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360577193] [2024-06-28 02:24:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:21,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:21,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:21,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:21,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:21,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 270 transitions, 3540 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:21,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:21,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:21,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:21,559 INFO L124 PetriNetUnfolderBase]: 741/1344 cut-off events. [2024-06-28 02:24:21,559 INFO L125 PetriNetUnfolderBase]: For 90084/90084 co-relation queries the response was YES. [2024-06-28 02:24:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9654 conditions, 1344 events. 741/1344 cut-off events. For 90084/90084 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7341 event pairs, 130 based on Foata normal form. 2/1342 useless extension candidates. Maximal degree in co-relation 9511. Up to 1172 conditions per place. [2024-06-28 02:24:21,570 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 234 selfloop transitions, 54 changer transitions 0/290 dead transitions. [2024-06-28 02:24:21,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 290 transitions, 4261 flow [2024-06-28 02:24:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:24:21,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:24:21,571 INFO L175 Difference]: Start difference. First operand has 311 places, 270 transitions, 3540 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:24:21,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 290 transitions, 4261 flow [2024-06-28 02:24:21,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 290 transitions, 4111 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:21,946 INFO L231 Difference]: Finished difference. Result has 314 places, 272 transitions, 3582 flow [2024-06-28 02:24:21,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3582, PETRI_PLACES=314, PETRI_TRANSITIONS=272} [2024-06-28 02:24:21,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 02:24:21,947 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 272 transitions, 3582 flow [2024-06-28 02:24:21,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:21,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:21,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:24:21,948 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:21,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash -454954664, now seen corresponding path program 20 times [2024-06-28 02:24:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458198626] [2024-06-28 02:24:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:22,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:22,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458198626] [2024-06-28 02:24:22,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458198626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:22,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:22,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:22,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023457113] [2024-06-28 02:24:22,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:22,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:22,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 272 transitions, 3582 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:22,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:22,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:22,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:23,176 INFO L124 PetriNetUnfolderBase]: 745/1352 cut-off events. [2024-06-28 02:24:23,176 INFO L125 PetriNetUnfolderBase]: For 90057/90057 co-relation queries the response was YES. [2024-06-28 02:24:23,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9694 conditions, 1352 events. 745/1352 cut-off events. For 90057/90057 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7399 event pairs, 106 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 9550. Up to 1110 conditions per place. [2024-06-28 02:24:23,188 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 221 selfloop transitions, 64 changer transitions 0/287 dead transitions. [2024-06-28 02:24:23,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 287 transitions, 4248 flow [2024-06-28 02:24:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:24:23,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:24:23,189 INFO L175 Difference]: Start difference. First operand has 314 places, 272 transitions, 3582 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:24:23,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 287 transitions, 4248 flow [2024-06-28 02:24:23,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 287 transitions, 4086 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:23,615 INFO L231 Difference]: Finished difference. Result has 315 places, 273 transitions, 3608 flow [2024-06-28 02:24:23,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3608, PETRI_PLACES=315, PETRI_TRANSITIONS=273} [2024-06-28 02:24:23,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 02:24:23,615 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 273 transitions, 3608 flow [2024-06-28 02:24:23,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:23,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:23,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:23,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:24:23,616 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:23,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 282665360, now seen corresponding path program 21 times [2024-06-28 02:24:23,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:23,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542719646] [2024-06-28 02:24:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:24,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542719646] [2024-06-28 02:24:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542719646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:24,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:24,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:24:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428490987] [2024-06-28 02:24:24,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:24,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:24:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:24:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:24:24,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:24,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 273 transitions, 3608 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:24,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:24,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:24,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:24,806 INFO L124 PetriNetUnfolderBase]: 749/1360 cut-off events. [2024-06-28 02:24:24,807 INFO L125 PetriNetUnfolderBase]: For 91031/91031 co-relation queries the response was YES. [2024-06-28 02:24:24,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9806 conditions, 1360 events. 749/1360 cut-off events. For 91031/91031 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7475 event pairs, 106 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 9661. Up to 1173 conditions per place. [2024-06-28 02:24:24,822 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 49 changer transitions 0/288 dead transitions. [2024-06-28 02:24:24,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 288 transitions, 4274 flow [2024-06-28 02:24:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:24:24,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 02:24:24,823 INFO L175 Difference]: Start difference. First operand has 315 places, 273 transitions, 3608 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:24:24,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 288 transitions, 4274 flow [2024-06-28 02:24:25,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 288 transitions, 4089 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:25,215 INFO L231 Difference]: Finished difference. Result has 316 places, 274 transitions, 3583 flow [2024-06-28 02:24:25,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3583, PETRI_PLACES=316, PETRI_TRANSITIONS=274} [2024-06-28 02:24:25,215 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 02:24:25,216 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 274 transitions, 3583 flow [2024-06-28 02:24:25,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:25,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:25,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:25,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:24:25,216 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:25,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash 282849934, now seen corresponding path program 6 times [2024-06-28 02:24:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034532163] [2024-06-28 02:24:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:26,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:26,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034532163] [2024-06-28 02:24:26,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034532163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:26,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:26,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:26,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82864221] [2024-06-28 02:24:26,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:26,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:26,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:26,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 274 transitions, 3583 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:26,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:26,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:26,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:27,028 INFO L124 PetriNetUnfolderBase]: 755/1370 cut-off events. [2024-06-28 02:24:27,028 INFO L125 PetriNetUnfolderBase]: For 90271/90271 co-relation queries the response was YES. [2024-06-28 02:24:27,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9772 conditions, 1370 events. 755/1370 cut-off events. For 90271/90271 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7539 event pairs, 110 based on Foata normal form. 2/1368 useless extension candidates. Maximal degree in co-relation 9627. Up to 1163 conditions per place. [2024-06-28 02:24:27,042 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 233 selfloop transitions, 57 changer transitions 0/292 dead transitions. [2024-06-28 02:24:27,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 292 transitions, 4291 flow [2024-06-28 02:24:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:24:27,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:24:27,043 INFO L175 Difference]: Start difference. First operand has 316 places, 274 transitions, 3583 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:24:27,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 292 transitions, 4291 flow [2024-06-28 02:24:27,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 292 transitions, 4145 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:27,422 INFO L231 Difference]: Finished difference. Result has 319 places, 276 transitions, 3635 flow [2024-06-28 02:24:27,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3635, PETRI_PLACES=319, PETRI_TRANSITIONS=276} [2024-06-28 02:24:27,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 02:24:27,423 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 276 transitions, 3635 flow [2024-06-28 02:24:27,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:27,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:27,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:27,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:24:27,423 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:27,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:27,423 INFO L85 PathProgramCache]: Analyzing trace with hash 289345054, now seen corresponding path program 7 times [2024-06-28 02:24:27,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:27,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819633691] [2024-06-28 02:24:27,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:27,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:28,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:28,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819633691] [2024-06-28 02:24:28,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819633691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:28,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:28,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:28,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276949592] [2024-06-28 02:24:28,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:28,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:28,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:28,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:28,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:28,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 276 transitions, 3635 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:28,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:28,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:28,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:28,950 INFO L124 PetriNetUnfolderBase]: 771/1396 cut-off events. [2024-06-28 02:24:28,950 INFO L125 PetriNetUnfolderBase]: For 97400/97400 co-relation queries the response was YES. [2024-06-28 02:24:28,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10181 conditions, 1396 events. 771/1396 cut-off events. For 97400/97400 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7692 event pairs, 104 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 10035. Up to 981 conditions per place. [2024-06-28 02:24:28,964 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 105 changer transitions 0/299 dead transitions. [2024-06-28 02:24:28,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 299 transitions, 4611 flow [2024-06-28 02:24:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:24:28,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:24:28,965 INFO L175 Difference]: Start difference. First operand has 319 places, 276 transitions, 3635 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:24:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 299 transitions, 4611 flow [2024-06-28 02:24:29,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 299 transitions, 4433 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:29,361 INFO L231 Difference]: Finished difference. Result has 322 places, 280 transitions, 3836 flow [2024-06-28 02:24:29,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3467, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3836, PETRI_PLACES=322, PETRI_TRANSITIONS=280} [2024-06-28 02:24:29,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 02:24:29,361 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 280 transitions, 3836 flow [2024-06-28 02:24:29,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:29,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:29,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:29,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:24:29,362 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:29,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:29,362 INFO L85 PathProgramCache]: Analyzing trace with hash 289345364, now seen corresponding path program 2 times [2024-06-28 02:24:29,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:29,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245992038] [2024-06-28 02:24:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:30,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:30,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245992038] [2024-06-28 02:24:30,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245992038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:30,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:30,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:30,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178518815] [2024-06-28 02:24:30,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:30,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:30,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:30,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:30,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:30,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:30,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 280 transitions, 3836 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:30,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:30,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:30,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:31,263 INFO L124 PetriNetUnfolderBase]: 795/1448 cut-off events. [2024-06-28 02:24:31,263 INFO L125 PetriNetUnfolderBase]: For 136789/136789 co-relation queries the response was YES. [2024-06-28 02:24:31,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10614 conditions, 1448 events. 795/1448 cut-off events. For 136789/136789 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8034 event pairs, 143 based on Foata normal form. 14/1458 useless extension candidates. Maximal degree in co-relation 10467. Up to 1160 conditions per place. [2024-06-28 02:24:31,278 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 236 selfloop transitions, 60 changer transitions 5/303 dead transitions. [2024-06-28 02:24:31,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 303 transitions, 4620 flow [2024-06-28 02:24:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:24:31,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:24:31,279 INFO L175 Difference]: Start difference. First operand has 322 places, 280 transitions, 3836 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:24:31,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 303 transitions, 4620 flow [2024-06-28 02:24:31,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 303 transitions, 4420 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:31,704 INFO L231 Difference]: Finished difference. Result has 324 places, 281 transitions, 3817 flow [2024-06-28 02:24:31,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3817, PETRI_PLACES=324, PETRI_TRANSITIONS=281} [2024-06-28 02:24:31,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 02:24:31,705 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 281 transitions, 3817 flow [2024-06-28 02:24:31,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:31,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:31,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:31,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:24:31,705 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:31,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 289106044, now seen corresponding path program 8 times [2024-06-28 02:24:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981851951] [2024-06-28 02:24:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:32,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981851951] [2024-06-28 02:24:32,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981851951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:32,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:32,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109677541] [2024-06-28 02:24:32,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:32,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:32,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:32,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:32,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:32,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 281 transitions, 3817 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:32,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:32,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:32,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:33,452 INFO L124 PetriNetUnfolderBase]: 785/1432 cut-off events. [2024-06-28 02:24:33,452 INFO L125 PetriNetUnfolderBase]: For 90733/90733 co-relation queries the response was YES. [2024-06-28 02:24:33,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10315 conditions, 1432 events. 785/1432 cut-off events. For 90733/90733 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7993 event pairs, 108 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 10168. Up to 1099 conditions per place. [2024-06-28 02:24:33,467 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 82 changer transitions 0/297 dead transitions. [2024-06-28 02:24:33,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 297 transitions, 4463 flow [2024-06-28 02:24:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:24:33,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:24:33,468 INFO L175 Difference]: Start difference. First operand has 324 places, 281 transitions, 3817 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:24:33,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 297 transitions, 4463 flow [2024-06-28 02:24:33,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 297 transitions, 4273 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:33,833 INFO L231 Difference]: Finished difference. Result has 325 places, 281 transitions, 3799 flow [2024-06-28 02:24:33,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3799, PETRI_PLACES=325, PETRI_TRANSITIONS=281} [2024-06-28 02:24:33,833 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:24:33,833 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 281 transitions, 3799 flow [2024-06-28 02:24:33,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:33,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:33,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:33,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:24:33,834 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:33,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:33,834 INFO L85 PathProgramCache]: Analyzing trace with hash 106882594, now seen corresponding path program 3 times [2024-06-28 02:24:33,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:33,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643199079] [2024-06-28 02:24:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:33,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:34,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:34,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643199079] [2024-06-28 02:24:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643199079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:34,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:34,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:34,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6157337] [2024-06-28 02:24:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:34,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:34,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:34,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:34,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:35,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:35,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 281 transitions, 3799 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:35,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:35,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:35,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:35,589 INFO L124 PetriNetUnfolderBase]: 789/1438 cut-off events. [2024-06-28 02:24:35,589 INFO L125 PetriNetUnfolderBase]: For 89892/89892 co-relation queries the response was YES. [2024-06-28 02:24:35,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10346 conditions, 1438 events. 789/1438 cut-off events. For 89892/89892 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7978 event pairs, 166 based on Foata normal form. 2/1436 useless extension candidates. Maximal degree in co-relation 10198. Up to 1310 conditions per place. [2024-06-28 02:24:35,603 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 44 changer transitions 0/293 dead transitions. [2024-06-28 02:24:35,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 293 transitions, 4435 flow [2024-06-28 02:24:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 02:24:35,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 02:24:35,604 INFO L175 Difference]: Start difference. First operand has 325 places, 281 transitions, 3799 flow. Second operand 11 states and 110 transitions. [2024-06-28 02:24:35,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 293 transitions, 4435 flow [2024-06-28 02:24:35,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 293 transitions, 4233 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 02:24:35,966 INFO L231 Difference]: Finished difference. Result has 326 places, 282 transitions, 3721 flow [2024-06-28 02:24:35,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3721, PETRI_PLACES=326, PETRI_TRANSITIONS=282} [2024-06-28 02:24:35,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-28 02:24:35,966 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 282 transitions, 3721 flow [2024-06-28 02:24:35,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:35,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:35,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:35,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:24:35,967 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:35,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1783545064, now seen corresponding path program 22 times [2024-06-28 02:24:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:35,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507856630] [2024-06-28 02:24:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:36,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507856630] [2024-06-28 02:24:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507856630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:36,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:36,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:24:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974057274] [2024-06-28 02:24:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:36,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:24:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:24:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:24:36,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:36,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 282 transitions, 3721 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:36,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:36,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:36,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:37,133 INFO L124 PetriNetUnfolderBase]: 793/1446 cut-off events. [2024-06-28 02:24:37,133 INFO L125 PetriNetUnfolderBase]: For 90756/90756 co-relation queries the response was YES. [2024-06-28 02:24:37,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10286 conditions, 1446 events. 793/1446 cut-off events. For 90756/90756 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8071 event pairs, 129 based on Foata normal form. 2/1444 useless extension candidates. Maximal degree in co-relation 10138. Up to 1248 conditions per place. [2024-06-28 02:24:37,146 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 240 selfloop transitions, 53 changer transitions 0/295 dead transitions. [2024-06-28 02:24:37,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 295 transitions, 4397 flow [2024-06-28 02:24:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:24:37,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 02:24:37,147 INFO L175 Difference]: Start difference. First operand has 326 places, 282 transitions, 3721 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:24:37,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 295 transitions, 4397 flow [2024-06-28 02:24:37,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 295 transitions, 4283 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:37,510 INFO L231 Difference]: Finished difference. Result has 326 places, 283 transitions, 3771 flow [2024-06-28 02:24:37,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3771, PETRI_PLACES=326, PETRI_TRANSITIONS=283} [2024-06-28 02:24:37,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-28 02:24:37,511 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 283 transitions, 3771 flow [2024-06-28 02:24:37,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:37,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:37,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:37,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:24:37,512 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:37,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1701094426, now seen corresponding path program 9 times [2024-06-28 02:24:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497499081] [2024-06-28 02:24:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:38,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:38,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497499081] [2024-06-28 02:24:38,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497499081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:38,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:38,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:38,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949950173] [2024-06-28 02:24:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:38,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:38,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:38,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:38,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:38,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 283 transitions, 3771 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:38,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:38,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:38,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:39,287 INFO L124 PetriNetUnfolderBase]: 799/1456 cut-off events. [2024-06-28 02:24:39,288 INFO L125 PetriNetUnfolderBase]: For 93264/93264 co-relation queries the response was YES. [2024-06-28 02:24:39,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10421 conditions, 1456 events. 799/1456 cut-off events. For 93264/93264 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8137 event pairs, 129 based on Foata normal form. 2/1454 useless extension candidates. Maximal degree in co-relation 10272. Up to 1248 conditions per place. [2024-06-28 02:24:39,302 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 240 selfloop transitions, 55 changer transitions 0/297 dead transitions. [2024-06-28 02:24:39,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 297 transitions, 4479 flow [2024-06-28 02:24:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:24:39,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 02:24:39,303 INFO L175 Difference]: Start difference. First operand has 326 places, 283 transitions, 3771 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:24:39,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 297 transitions, 4479 flow [2024-06-28 02:24:39,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 297 transitions, 4325 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:39,664 INFO L231 Difference]: Finished difference. Result has 328 places, 285 transitions, 3813 flow [2024-06-28 02:24:39,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3813, PETRI_PLACES=328, PETRI_TRANSITIONS=285} [2024-06-28 02:24:39,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-28 02:24:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 285 transitions, 3813 flow [2024-06-28 02:24:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:39,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:39,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:39,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:24:39,665 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 468836730, now seen corresponding path program 23 times [2024-06-28 02:24:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323240943] [2024-06-28 02:24:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:40,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323240943] [2024-06-28 02:24:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323240943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:40,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:40,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:24:40,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219120229] [2024-06-28 02:24:40,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:40,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:24:40,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:24:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:24:40,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:40,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 285 transitions, 3813 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:40,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:40,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:40,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:40,922 INFO L124 PetriNetUnfolderBase]: 803/1464 cut-off events. [2024-06-28 02:24:40,922 INFO L125 PetriNetUnfolderBase]: For 95542/95542 co-relation queries the response was YES. [2024-06-28 02:24:40,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1464 events. 803/1464 cut-off events. For 95542/95542 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8197 event pairs, 127 based on Foata normal form. 2/1462 useless extension candidates. Maximal degree in co-relation 10337. Up to 1266 conditions per place. [2024-06-28 02:24:40,939 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 244 selfloop transitions, 52 changer transitions 0/298 dead transitions. [2024-06-28 02:24:40,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 298 transitions, 4493 flow [2024-06-28 02:24:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 02:24:40,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-28 02:24:40,940 INFO L175 Difference]: Start difference. First operand has 328 places, 285 transitions, 3813 flow. Second operand 9 states and 95 transitions. [2024-06-28 02:24:40,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 298 transitions, 4493 flow [2024-06-28 02:24:41,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 298 transitions, 4318 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:41,328 INFO L231 Difference]: Finished difference. Result has 329 places, 286 transitions, 3802 flow [2024-06-28 02:24:41,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3802, PETRI_PLACES=329, PETRI_TRANSITIONS=286} [2024-06-28 02:24:41,328 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-28 02:24:41,328 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 286 transitions, 3802 flow [2024-06-28 02:24:41,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:41,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:41,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:41,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:24:41,329 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:41,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash -40137768, now seen corresponding path program 24 times [2024-06-28 02:24:41,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:41,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847835524] [2024-06-28 02:24:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:41,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847835524] [2024-06-28 02:24:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847835524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:42,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:42,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:42,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156954094] [2024-06-28 02:24:42,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:42,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:42,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:42,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:42,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 286 transitions, 3802 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:42,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:42,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:42,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:42,581 INFO L124 PetriNetUnfolderBase]: 807/1472 cut-off events. [2024-06-28 02:24:42,581 INFO L125 PetriNetUnfolderBase]: For 96304/96304 co-relation queries the response was YES. [2024-06-28 02:24:42,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10533 conditions, 1472 events. 807/1472 cut-off events. For 96304/96304 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8253 event pairs, 127 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 10383. Up to 1265 conditions per place. [2024-06-28 02:24:42,597 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 242 selfloop transitions, 56 changer transitions 0/300 dead transitions. [2024-06-28 02:24:42,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 300 transitions, 4498 flow [2024-06-28 02:24:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:24:42,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:24:42,598 INFO L175 Difference]: Start difference. First operand has 329 places, 286 transitions, 3802 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:24:42,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 300 transitions, 4498 flow [2024-06-28 02:24:43,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 300 transitions, 4344 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:43,011 INFO L231 Difference]: Finished difference. Result has 331 places, 287 transitions, 3822 flow [2024-06-28 02:24:43,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3822, PETRI_PLACES=331, PETRI_TRANSITIONS=287} [2024-06-28 02:24:43,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 02:24:43,012 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 287 transitions, 3822 flow [2024-06-28 02:24:43,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:43,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:43,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:43,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:24:43,012 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:43,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 697153094, now seen corresponding path program 10 times [2024-06-28 02:24:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493444462] [2024-06-28 02:24:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:44,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493444462] [2024-06-28 02:24:44,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493444462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524280866] [2024-06-28 02:24:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:44,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:44,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:44,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:44,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:44,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 287 transitions, 3822 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:44,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:44,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:44,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:44,614 INFO L124 PetriNetUnfolderBase]: 823/1498 cut-off events. [2024-06-28 02:24:44,614 INFO L125 PetriNetUnfolderBase]: For 106266/106266 co-relation queries the response was YES. [2024-06-28 02:24:44,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 1498 events. 823/1498 cut-off events. For 106266/106266 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8419 event pairs, 280 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 10807. Up to 1386 conditions per place. [2024-06-28 02:24:44,629 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 270 selfloop transitions, 34 changer transitions 0/306 dead transitions. [2024-06-28 02:24:44,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 306 transitions, 4812 flow [2024-06-28 02:24:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:24:44,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:24:44,630 INFO L175 Difference]: Start difference. First operand has 331 places, 287 transitions, 3822 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:24:44,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 306 transitions, 4812 flow [2024-06-28 02:24:45,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 306 transitions, 4648 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:45,070 INFO L231 Difference]: Finished difference. Result has 334 places, 291 transitions, 3895 flow [2024-06-28 02:24:45,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3658, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3895, PETRI_PLACES=334, PETRI_TRANSITIONS=291} [2024-06-28 02:24:45,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-28 02:24:45,071 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 291 transitions, 3895 flow [2024-06-28 02:24:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:45,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:45,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:45,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:24:45,071 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:45,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash -40130824, now seen corresponding path program 11 times [2024-06-28 02:24:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220644874] [2024-06-28 02:24:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:46,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:46,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220644874] [2024-06-28 02:24:46,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220644874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:46,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:46,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88254078] [2024-06-28 02:24:46,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:46,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:46,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:46,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:46,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:46,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 291 transitions, 3895 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:46,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:46,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:46,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:46,895 INFO L124 PetriNetUnfolderBase]: 829/1508 cut-off events. [2024-06-28 02:24:46,895 INFO L125 PetriNetUnfolderBase]: For 107384/107384 co-relation queries the response was YES. [2024-06-28 02:24:46,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 1508 events. 829/1508 cut-off events. For 107384/107384 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8487 event pairs, 134 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 10815. Up to 1274 conditions per place. [2024-06-28 02:24:46,911 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 243 selfloop transitions, 63 changer transitions 0/308 dead transitions. [2024-06-28 02:24:46,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 308 transitions, 4647 flow [2024-06-28 02:24:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:24:46,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:24:46,912 INFO L175 Difference]: Start difference. First operand has 334 places, 291 transitions, 3895 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:24:46,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 308 transitions, 4647 flow [2024-06-28 02:24:47,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 308 transitions, 4531 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:47,351 INFO L231 Difference]: Finished difference. Result has 338 places, 293 transitions, 3998 flow [2024-06-28 02:24:47,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3998, PETRI_PLACES=338, PETRI_TRANSITIONS=293} [2024-06-28 02:24:47,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-28 02:24:47,352 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 293 transitions, 3998 flow [2024-06-28 02:24:47,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:47,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:47,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:47,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:24:47,353 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:47,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:47,353 INFO L85 PathProgramCache]: Analyzing trace with hash -383091086, now seen corresponding path program 4 times [2024-06-28 02:24:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:47,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911610356] [2024-06-28 02:24:47,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:47,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:48,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:48,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911610356] [2024-06-28 02:24:48,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911610356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:48,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:48,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286230454] [2024-06-28 02:24:48,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:48,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:48,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:48,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 293 transitions, 3998 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:48,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:48,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:48,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:48,970 INFO L124 PetriNetUnfolderBase]: 833/1516 cut-off events. [2024-06-28 02:24:48,970 INFO L125 PetriNetUnfolderBase]: For 109814/109814 co-relation queries the response was YES. [2024-06-28 02:24:48,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11112 conditions, 1516 events. 833/1516 cut-off events. For 109814/109814 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8526 event pairs, 288 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 10958. Up to 1473 conditions per place. [2024-06-28 02:24:48,987 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 282 selfloop transitions, 21 changer transitions 0/305 dead transitions. [2024-06-28 02:24:48,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 305 transitions, 4660 flow [2024-06-28 02:24:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 02:24:48,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-28 02:24:48,988 INFO L175 Difference]: Start difference. First operand has 338 places, 293 transitions, 3998 flow. Second operand 11 states and 105 transitions. [2024-06-28 02:24:48,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 305 transitions, 4660 flow [2024-06-28 02:24:49,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 305 transitions, 4463 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:49,445 INFO L231 Difference]: Finished difference. Result has 341 places, 294 transitions, 3881 flow [2024-06-28 02:24:49,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3801, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3881, PETRI_PLACES=341, PETRI_TRANSITIONS=294} [2024-06-28 02:24:49,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:24:49,446 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 294 transitions, 3881 flow [2024-06-28 02:24:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:49,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:49,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:49,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:24:49,446 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:49,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash 149869130, now seen corresponding path program 5 times [2024-06-28 02:24:49,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:49,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884253301] [2024-06-28 02:24:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:49,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:50,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:50,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884253301] [2024-06-28 02:24:50,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884253301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:50,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:50,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:50,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180476291] [2024-06-28 02:24:50,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:50,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:50,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:50,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:50,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 294 transitions, 3881 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:50,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:50,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:50,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:51,155 INFO L124 PetriNetUnfolderBase]: 844/1537 cut-off events. [2024-06-28 02:24:51,156 INFO L125 PetriNetUnfolderBase]: For 119493/119493 co-relation queries the response was YES. [2024-06-28 02:24:51,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11316 conditions, 1537 events. 844/1537 cut-off events. For 119493/119493 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8692 event pairs, 287 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 11161. Up to 1471 conditions per place. [2024-06-28 02:24:51,173 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 23 changer transitions 0/310 dead transitions. [2024-06-28 02:24:51,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 310 transitions, 4771 flow [2024-06-28 02:24:51,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:24:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:24:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 02:24:51,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-28 02:24:51,174 INFO L175 Difference]: Start difference. First operand has 341 places, 294 transitions, 3881 flow. Second operand 12 states and 114 transitions. [2024-06-28 02:24:51,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 310 transitions, 4771 flow [2024-06-28 02:24:51,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 310 transitions, 4701 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:51,629 INFO L231 Difference]: Finished difference. Result has 344 places, 296 transitions, 3931 flow [2024-06-28 02:24:51,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3931, PETRI_PLACES=344, PETRI_TRANSITIONS=296} [2024-06-28 02:24:51,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 02:24:51,630 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 296 transitions, 3931 flow [2024-06-28 02:24:51,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:51,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:51,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:51,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:24:51,630 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:51,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:51,631 INFO L85 PathProgramCache]: Analyzing trace with hash 492712522, now seen corresponding path program 6 times [2024-06-28 02:24:51,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:51,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885884] [2024-06-28 02:24:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885884] [2024-06-28 02:24:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:53,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:53,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:24:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090454404] [2024-06-28 02:24:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:53,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:24:53,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:24:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:24:53,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:53,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 296 transitions, 3931 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:53,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:53,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:53,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:54,223 INFO L124 PetriNetUnfolderBase]: 848/1545 cut-off events. [2024-06-28 02:24:54,223 INFO L125 PetriNetUnfolderBase]: For 122027/122027 co-relation queries the response was YES. [2024-06-28 02:24:54,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11391 conditions, 1545 events. 848/1545 cut-off events. For 122027/122027 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8773 event pairs, 158 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 11235. Up to 1384 conditions per place. [2024-06-28 02:24:54,239 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 248 selfloop transitions, 59 changer transitions 0/309 dead transitions. [2024-06-28 02:24:54,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 309 transitions, 4611 flow [2024-06-28 02:24:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:24:54,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 02:24:54,241 INFO L175 Difference]: Start difference. First operand has 344 places, 296 transitions, 3931 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:24:54,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 309 transitions, 4611 flow [2024-06-28 02:24:54,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 309 transitions, 4548 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:54,715 INFO L231 Difference]: Finished difference. Result has 347 places, 297 transitions, 4028 flow [2024-06-28 02:24:54,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3868, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4028, PETRI_PLACES=347, PETRI_TRANSITIONS=297} [2024-06-28 02:24:54,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-28 02:24:54,716 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 297 transitions, 4028 flow [2024-06-28 02:24:54,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:54,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:54,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:54,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:24:54,717 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:54,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash 492712212, now seen corresponding path program 12 times [2024-06-28 02:24:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:54,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945725684] [2024-06-28 02:24:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:54,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945725684] [2024-06-28 02:24:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945725684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:55,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:55,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:55,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363170314] [2024-06-28 02:24:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:55,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:55,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:55,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 297 transitions, 4028 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:55,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:55,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:55,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:56,372 INFO L124 PetriNetUnfolderBase]: 849/1547 cut-off events. [2024-06-28 02:24:56,373 INFO L125 PetriNetUnfolderBase]: For 121239/121239 co-relation queries the response was YES. [2024-06-28 02:24:56,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11460 conditions, 1547 events. 849/1547 cut-off events. For 121239/121239 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8796 event pairs, 133 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 11302. Up to 1292 conditions per place. [2024-06-28 02:24:56,389 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 244 selfloop transitions, 70 changer transitions 0/316 dead transitions. [2024-06-28 02:24:56,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 316 transitions, 4808 flow [2024-06-28 02:24:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:24:56,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:24:56,390 INFO L175 Difference]: Start difference. First operand has 347 places, 297 transitions, 4028 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:24:56,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 316 transitions, 4808 flow [2024-06-28 02:24:56,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 316 transitions, 4658 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:56,891 INFO L231 Difference]: Finished difference. Result has 349 places, 299 transitions, 4116 flow [2024-06-28 02:24:56,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3878, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4116, PETRI_PLACES=349, PETRI_TRANSITIONS=299} [2024-06-28 02:24:56,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-28 02:24:56,891 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 299 transitions, 4116 flow [2024-06-28 02:24:56,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:56,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:56,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:56,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:24:56,892 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:56,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash -393210726, now seen corresponding path program 13 times [2024-06-28 02:24:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027869853] [2024-06-28 02:24:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:56,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:58,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027869853] [2024-06-28 02:24:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027869853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:58,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:58,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:24:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922240735] [2024-06-28 02:24:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:58,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:24:58,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:58,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:24:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:24:58,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:24:58,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 299 transitions, 4116 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:58,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:58,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:24:58,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:58,732 INFO L124 PetriNetUnfolderBase]: 845/1541 cut-off events. [2024-06-28 02:24:58,732 INFO L125 PetriNetUnfolderBase]: For 115214/115214 co-relation queries the response was YES. [2024-06-28 02:24:58,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11249 conditions, 1541 events. 845/1541 cut-off events. For 115214/115214 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8765 event pairs, 291 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 11090. Up to 1482 conditions per place. [2024-06-28 02:24:58,747 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 23 changer transitions 0/311 dead transitions. [2024-06-28 02:24:58,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 311 transitions, 4768 flow [2024-06-28 02:24:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 02:24:58,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 02:24:58,748 INFO L175 Difference]: Start difference. First operand has 349 places, 299 transitions, 4116 flow. Second operand 11 states and 109 transitions. [2024-06-28 02:24:58,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 311 transitions, 4768 flow [2024-06-28 02:24:59,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 311 transitions, 4531 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 02:24:59,167 INFO L231 Difference]: Finished difference. Result has 352 places, 299 transitions, 3931 flow [2024-06-28 02:24:59,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3931, PETRI_PLACES=352, PETRI_TRANSITIONS=299} [2024-06-28 02:24:59,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 02:24:59,167 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 299 transitions, 3931 flow [2024-06-28 02:24:59,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:24:59,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:59,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:59,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:24:59,168 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:24:59,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -393210416, now seen corresponding path program 7 times [2024-06-28 02:24:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:59,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297115027] [2024-06-28 02:24:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:00,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:00,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297115027] [2024-06-28 02:25:00,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297115027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:00,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:00,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169153658] [2024-06-28 02:25:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:00,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:00,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:00,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 299 transitions, 3931 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:00,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:00,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:00,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:00,735 INFO L124 PetriNetUnfolderBase]: 842/1536 cut-off events. [2024-06-28 02:25:00,735 INFO L125 PetriNetUnfolderBase]: For 107211/107211 co-relation queries the response was YES. [2024-06-28 02:25:00,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10808 conditions, 1536 events. 842/1536 cut-off events. For 107211/107211 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8730 event pairs, 289 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 10648. Up to 1487 conditions per place. [2024-06-28 02:25:00,751 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 287 selfloop transitions, 21 changer transitions 0/310 dead transitions. [2024-06-28 02:25:00,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 310 transitions, 4571 flow [2024-06-28 02:25:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 02:25:00,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-28 02:25:00,752 INFO L175 Difference]: Start difference. First operand has 352 places, 299 transitions, 3931 flow. Second operand 11 states and 105 transitions. [2024-06-28 02:25:00,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 310 transitions, 4571 flow [2024-06-28 02:25:01,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 310 transitions, 4492 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:01,146 INFO L231 Difference]: Finished difference. Result has 353 places, 299 transitions, 3900 flow [2024-06-28 02:25:01,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3852, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3900, PETRI_PLACES=353, PETRI_TRANSITIONS=299} [2024-06-28 02:25:01,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-28 02:25:01,146 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 299 transitions, 3900 flow [2024-06-28 02:25:01,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:01,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:01,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:25:01,147 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:01,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:01,147 INFO L85 PathProgramCache]: Analyzing trace with hash -394282372, now seen corresponding path program 25 times [2024-06-28 02:25:01,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:01,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994428362] [2024-06-28 02:25:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:01,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:01,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994428362] [2024-06-28 02:25:01,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994428362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:01,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:25:01,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603383841] [2024-06-28 02:25:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:25:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:25:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:25:01,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:01,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 299 transitions, 3900 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:01,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:01,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:01,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:02,241 INFO L124 PetriNetUnfolderBase]: 839/1531 cut-off events. [2024-06-28 02:25:02,241 INFO L125 PetriNetUnfolderBase]: For 100246/100246 co-relation queries the response was YES. [2024-06-28 02:25:02,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10516 conditions, 1531 events. 839/1531 cut-off events. For 100246/100246 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8699 event pairs, 285 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 10355. Up to 1494 conditions per place. [2024-06-28 02:25:02,258 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 292 selfloop transitions, 15 changer transitions 0/309 dead transitions. [2024-06-28 02:25:02,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 309 transitions, 4540 flow [2024-06-28 02:25:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:25:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:25:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 02:25:02,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-28 02:25:02,259 INFO L175 Difference]: Start difference. First operand has 353 places, 299 transitions, 3900 flow. Second operand 9 states and 89 transitions. [2024-06-28 02:25:02,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 309 transitions, 4540 flow [2024-06-28 02:25:02,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 309 transitions, 4496 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:02,709 INFO L231 Difference]: Finished difference. Result has 352 places, 299 transitions, 3890 flow [2024-06-28 02:25:02,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3890, PETRI_PLACES=352, PETRI_TRANSITIONS=299} [2024-06-28 02:25:02,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 02:25:02,710 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 299 transitions, 3890 flow [2024-06-28 02:25:02,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:02,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:02,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:02,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 02:25:02,710 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:02,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:02,710 INFO L85 PathProgramCache]: Analyzing trace with hash -678310596, now seen corresponding path program 14 times [2024-06-28 02:25:02,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:02,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642900950] [2024-06-28 02:25:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:02,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:03,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642900950] [2024-06-28 02:25:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642900950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:03,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:03,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:25:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449224698] [2024-06-28 02:25:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:03,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:25:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:25:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:25:03,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:03,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 299 transitions, 3890 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:03,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:03,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:03,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:04,371 INFO L124 PetriNetUnfolderBase]: 845/1541 cut-off events. [2024-06-28 02:25:04,371 INFO L125 PetriNetUnfolderBase]: For 102625/102625 co-relation queries the response was YES. [2024-06-28 02:25:04,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10634 conditions, 1541 events. 845/1541 cut-off events. For 102625/102625 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8767 event pairs, 282 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 10472. Up to 1428 conditions per place. [2024-06-28 02:25:04,389 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 37 changer transitions 0/318 dead transitions. [2024-06-28 02:25:04,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 318 transitions, 4838 flow [2024-06-28 02:25:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:25:04,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:25:04,390 INFO L175 Difference]: Start difference. First operand has 352 places, 299 transitions, 3890 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:25:04,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 318 transitions, 4838 flow [2024-06-28 02:25:04,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 318 transitions, 4680 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:04,916 INFO L231 Difference]: Finished difference. Result has 355 places, 301 transitions, 3882 flow [2024-06-28 02:25:04,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3732, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3882, PETRI_PLACES=355, PETRI_TRANSITIONS=301} [2024-06-28 02:25:04,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:25:04,917 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 301 transitions, 3882 flow [2024-06-28 02:25:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:04,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:04,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 02:25:04,917 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:04,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash -678310286, now seen corresponding path program 8 times [2024-06-28 02:25:04,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:04,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477519592] [2024-06-28 02:25:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:04,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:06,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477519592] [2024-06-28 02:25:06,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477519592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:06,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:06,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:06,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765074898] [2024-06-28 02:25:06,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:06,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:06,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:06,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:06,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:06,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:06,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 301 transitions, 3882 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:06,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:06,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:06,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:06,724 INFO L124 PetriNetUnfolderBase]: 842/1536 cut-off events. [2024-06-28 02:25:06,724 INFO L125 PetriNetUnfolderBase]: For 93938/93938 co-relation queries the response was YES. [2024-06-28 02:25:06,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10279 conditions, 1536 events. 842/1536 cut-off events. For 93938/93938 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8733 event pairs, 289 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 10116. Up to 1484 conditions per place. [2024-06-28 02:25:06,741 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 25 changer transitions 0/312 dead transitions. [2024-06-28 02:25:06,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 312 transitions, 4526 flow [2024-06-28 02:25:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 02:25:06,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 02:25:06,742 INFO L175 Difference]: Start difference. First operand has 355 places, 301 transitions, 3882 flow. Second operand 11 states and 108 transitions. [2024-06-28 02:25:06,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 312 transitions, 4526 flow [2024-06-28 02:25:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 312 transitions, 4397 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:07,262 INFO L231 Difference]: Finished difference. Result has 357 places, 301 transitions, 3807 flow [2024-06-28 02:25:07,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3753, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3807, PETRI_PLACES=357, PETRI_TRANSITIONS=301} [2024-06-28 02:25:07,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-28 02:25:07,263 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 301 transitions, 3807 flow [2024-06-28 02:25:07,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:07,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:07,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:07,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 02:25:07,263 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:07,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:07,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1879439484, now seen corresponding path program 15 times [2024-06-28 02:25:07,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:07,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850536146] [2024-06-28 02:25:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:07,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:08,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:08,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850536146] [2024-06-28 02:25:08,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850536146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:08,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:08,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:25:08,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955391752] [2024-06-28 02:25:08,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:08,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:25:08,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:25:08,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:25:08,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:08,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 301 transitions, 3807 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:08,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:08,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:08,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:08,516 INFO L124 PetriNetUnfolderBase]: 838/1530 cut-off events. [2024-06-28 02:25:08,516 INFO L125 PetriNetUnfolderBase]: For 83664/83664 co-relation queries the response was YES. [2024-06-28 02:25:08,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9907 conditions, 1530 events. 838/1530 cut-off events. For 83664/83664 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8724 event pairs, 129 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 9744. Up to 885 conditions per place. [2024-06-28 02:25:08,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 139 changer transitions 0/316 dead transitions. [2024-06-28 02:25:08,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 316 transitions, 4677 flow [2024-06-28 02:25:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:25:08,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 02:25:08,534 INFO L175 Difference]: Start difference. First operand has 357 places, 301 transitions, 3807 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:25:08,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 316 transitions, 4677 flow [2024-06-28 02:25:08,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 316 transitions, 4430 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-06-28 02:25:09,002 INFO L231 Difference]: Finished difference. Result has 355 places, 301 transitions, 3843 flow [2024-06-28 02:25:09,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3843, PETRI_PLACES=355, PETRI_TRANSITIONS=301} [2024-06-28 02:25:09,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:25:09,003 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 301 transitions, 3843 flow [2024-06-28 02:25:09,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:09,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:09,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:09,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 02:25:09,003 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:09,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1050955992, now seen corresponding path program 1 times [2024-06-28 02:25:09,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:09,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747983992] [2024-06-28 02:25:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:09,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:10,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:10,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747983992] [2024-06-28 02:25:10,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747983992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:10,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:10,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539158010] [2024-06-28 02:25:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:10,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:10,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:10,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:10,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 301 transitions, 3843 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:10,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:10,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:10,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:11,043 INFO L124 PetriNetUnfolderBase]: 842/1538 cut-off events. [2024-06-28 02:25:11,043 INFO L125 PetriNetUnfolderBase]: For 86716/86716 co-relation queries the response was YES. [2024-06-28 02:25:11,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10001 conditions, 1538 events. 842/1538 cut-off events. For 86716/86716 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8764 event pairs, 161 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 9839. Up to 1355 conditions per place. [2024-06-28 02:25:11,060 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 34 changer transitions 0/321 dead transitions. [2024-06-28 02:25:11,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 321 transitions, 4563 flow [2024-06-28 02:25:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:25:11,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 02:25:11,061 INFO L175 Difference]: Start difference. First operand has 355 places, 301 transitions, 3843 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:25:11,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 321 transitions, 4563 flow [2024-06-28 02:25:11,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 321 transitions, 4371 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:11,487 INFO L231 Difference]: Finished difference. Result has 358 places, 302 transitions, 3761 flow [2024-06-28 02:25:11,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3761, PETRI_PLACES=358, PETRI_TRANSITIONS=302} [2024-06-28 02:25:11,488 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 02:25:11,488 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 302 transitions, 3761 flow [2024-06-28 02:25:11,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:11,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:11,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:11,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 02:25:11,488 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:11,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1841382888, now seen corresponding path program 2 times [2024-06-28 02:25:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774640040] [2024-06-28 02:25:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:12,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774640040] [2024-06-28 02:25:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774640040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:12,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:12,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611777818] [2024-06-28 02:25:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:12,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:12,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:12,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:12,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 302 transitions, 3761 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:12,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:12,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:12,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:13,130 INFO L124 PetriNetUnfolderBase]: 846/1546 cut-off events. [2024-06-28 02:25:13,130 INFO L125 PetriNetUnfolderBase]: For 85869/85869 co-relation queries the response was YES. [2024-06-28 02:25:13,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9880 conditions, 1546 events. 846/1546 cut-off events. For 85869/85869 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8822 event pairs, 165 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 9717. Up to 1404 conditions per place. [2024-06-28 02:25:13,147 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 281 selfloop transitions, 37 changer transitions 0/320 dead transitions. [2024-06-28 02:25:13,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 320 transitions, 4475 flow [2024-06-28 02:25:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:25:13,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 02:25:13,148 INFO L175 Difference]: Start difference. First operand has 358 places, 302 transitions, 3761 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:25:13,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 320 transitions, 4475 flow [2024-06-28 02:25:13,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 320 transitions, 4375 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:13,725 INFO L231 Difference]: Finished difference. Result has 360 places, 303 transitions, 3779 flow [2024-06-28 02:25:13,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3661, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3779, PETRI_PLACES=360, PETRI_TRANSITIONS=303} [2024-06-28 02:25:13,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 02:25:13,726 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 303 transitions, 3779 flow [2024-06-28 02:25:13,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:13,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:13,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:13,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 02:25:13,726 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:13,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:13,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1168285524, now seen corresponding path program 3 times [2024-06-28 02:25:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:13,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002254777] [2024-06-28 02:25:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:15,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:15,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002254777] [2024-06-28 02:25:15,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002254777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:15,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:15,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745932747] [2024-06-28 02:25:15,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:15,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:15,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:15,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 303 transitions, 3779 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:15,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:15,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:15,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:15,792 INFO L124 PetriNetUnfolderBase]: 850/1554 cut-off events. [2024-06-28 02:25:15,792 INFO L125 PetriNetUnfolderBase]: For 89980/89980 co-relation queries the response was YES. [2024-06-28 02:25:15,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9932 conditions, 1554 events. 850/1554 cut-off events. For 89980/89980 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8909 event pairs, 159 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 9768. Up to 1394 conditions per place. [2024-06-28 02:25:15,809 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 49 changer transitions 0/321 dead transitions. [2024-06-28 02:25:15,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 321 transitions, 4505 flow [2024-06-28 02:25:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:25:15,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:25:15,810 INFO L175 Difference]: Start difference. First operand has 360 places, 303 transitions, 3779 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:25:15,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 321 transitions, 4505 flow [2024-06-28 02:25:16,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 321 transitions, 4397 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:16,326 INFO L231 Difference]: Finished difference. Result has 362 places, 304 transitions, 3815 flow [2024-06-28 02:25:16,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3815, PETRI_PLACES=362, PETRI_TRANSITIONS=304} [2024-06-28 02:25:16,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-28 02:25:16,327 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 304 transitions, 3815 flow [2024-06-28 02:25:16,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:16,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:16,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:16,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 02:25:16,327 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:16,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1837658238, now seen corresponding path program 4 times [2024-06-28 02:25:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513130034] [2024-06-28 02:25:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:17,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:17,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513130034] [2024-06-28 02:25:17,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513130034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:17,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16279634] [2024-06-28 02:25:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:17,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:17,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:17,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:17,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 304 transitions, 3815 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:17,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:18,021 INFO L124 PetriNetUnfolderBase]: 854/1562 cut-off events. [2024-06-28 02:25:18,022 INFO L125 PetriNetUnfolderBase]: For 91933/91933 co-relation queries the response was YES. [2024-06-28 02:25:18,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10014 conditions, 1562 events. 854/1562 cut-off events. For 91933/91933 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8937 event pairs, 169 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 9849. Up to 1406 conditions per place. [2024-06-28 02:25:18,037 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 271 selfloop transitions, 48 changer transitions 1/322 dead transitions. [2024-06-28 02:25:18,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 322 transitions, 4549 flow [2024-06-28 02:25:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:25:18,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:25:18,039 INFO L175 Difference]: Start difference. First operand has 362 places, 304 transitions, 3815 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:25:18,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 322 transitions, 4549 flow [2024-06-28 02:25:18,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 322 transitions, 4415 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:18,519 INFO L231 Difference]: Finished difference. Result has 364 places, 305 transitions, 3825 flow [2024-06-28 02:25:18,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3681, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3825, PETRI_PLACES=364, PETRI_TRANSITIONS=305} [2024-06-28 02:25:18,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 02:25:18,520 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 305 transitions, 3825 flow [2024-06-28 02:25:18,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:18,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:18,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:18,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 02:25:18,520 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:18,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash 591529686, now seen corresponding path program 5 times [2024-06-28 02:25:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693644161] [2024-06-28 02:25:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:19,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:19,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693644161] [2024-06-28 02:25:19,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693644161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:19,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:19,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:19,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904038375] [2024-06-28 02:25:19,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:19,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:19,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:19,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:19,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 305 transitions, 3825 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:19,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:19,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:19,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:20,097 INFO L124 PetriNetUnfolderBase]: 858/1570 cut-off events. [2024-06-28 02:25:20,097 INFO L125 PetriNetUnfolderBase]: For 93803/93803 co-relation queries the response was YES. [2024-06-28 02:25:20,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10074 conditions, 1570 events. 858/1570 cut-off events. For 93803/93803 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9016 event pairs, 159 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 9908. Up to 1419 conditions per place. [2024-06-28 02:25:20,117 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 278 selfloop transitions, 43 changer transitions 0/323 dead transitions. [2024-06-28 02:25:20,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 323 transitions, 4555 flow [2024-06-28 02:25:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:25:20,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:25:20,118 INFO L175 Difference]: Start difference. First operand has 364 places, 305 transitions, 3825 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:25:20,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 323 transitions, 4555 flow [2024-06-28 02:25:20,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 323 transitions, 4428 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:20,565 INFO L231 Difference]: Finished difference. Result has 367 places, 306 transitions, 3834 flow [2024-06-28 02:25:20,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3834, PETRI_PLACES=367, PETRI_TRANSITIONS=306} [2024-06-28 02:25:20,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-28 02:25:20,566 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 306 transitions, 3834 flow [2024-06-28 02:25:20,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:20,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:20,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:20,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 02:25:20,566 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:20,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1168279727, now seen corresponding path program 1 times [2024-06-28 02:25:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:20,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747075750] [2024-06-28 02:25:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:20,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:21,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747075750] [2024-06-28 02:25:21,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747075750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:21,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:21,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:21,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040405175] [2024-06-28 02:25:21,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:21,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:21,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:22,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:22,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 306 transitions, 3834 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:22,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:22,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:22,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:22,750 INFO L124 PetriNetUnfolderBase]: 859/1572 cut-off events. [2024-06-28 02:25:22,750 INFO L125 PetriNetUnfolderBase]: For 90046/90046 co-relation queries the response was YES. [2024-06-28 02:25:22,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9942 conditions, 1572 events. 859/1572 cut-off events. For 90046/90046 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9044 event pairs, 162 based on Foata normal form. 2/1573 useless extension candidates. Maximal degree in co-relation 9775. Up to 1396 conditions per place. [2024-06-28 02:25:22,767 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 262 selfloop transitions, 59 changer transitions 2/325 dead transitions. [2024-06-28 02:25:22,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 325 transitions, 4596 flow [2024-06-28 02:25:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:25:22,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:25:22,768 INFO L175 Difference]: Start difference. First operand has 367 places, 306 transitions, 3834 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:25:22,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 325 transitions, 4596 flow [2024-06-28 02:25:23,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 325 transitions, 4444 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:23,275 INFO L231 Difference]: Finished difference. Result has 369 places, 308 transitions, 3875 flow [2024-06-28 02:25:23,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3875, PETRI_PLACES=369, PETRI_TRANSITIONS=308} [2024-06-28 02:25:23,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 02:25:23,275 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 308 transitions, 3875 flow [2024-06-28 02:25:23,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:23,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:23,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:23,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 02:25:23,276 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:23,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:23,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1108958896, now seen corresponding path program 6 times [2024-06-28 02:25:23,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:23,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070215112] [2024-06-28 02:25:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:23,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070215112] [2024-06-28 02:25:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070215112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:24,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283588765] [2024-06-28 02:25:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:24,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:24,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:24,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:24,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 308 transitions, 3875 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:24,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:24,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:24,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:25,185 INFO L124 PetriNetUnfolderBase]: 863/1580 cut-off events. [2024-06-28 02:25:25,185 INFO L125 PetriNetUnfolderBase]: For 92030/92030 co-relation queries the response was YES. [2024-06-28 02:25:25,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10015 conditions, 1580 events. 863/1580 cut-off events. For 92030/92030 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9105 event pairs, 164 based on Foata normal form. 2/1581 useless extension candidates. Maximal degree in co-relation 9847. Up to 1409 conditions per place. [2024-06-28 02:25:25,204 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 55 changer transitions 1/326 dead transitions. [2024-06-28 02:25:25,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 326 transitions, 4621 flow [2024-06-28 02:25:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:25:25,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:25:25,205 INFO L175 Difference]: Start difference. First operand has 369 places, 308 transitions, 3875 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:25:25,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 326 transitions, 4621 flow [2024-06-28 02:25:25,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 326 transitions, 4470 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:25,738 INFO L231 Difference]: Finished difference. Result has 371 places, 309 transitions, 3888 flow [2024-06-28 02:25:25,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3888, PETRI_PLACES=371, PETRI_TRANSITIONS=309} [2024-06-28 02:25:25,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-28 02:25:25,738 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 309 transitions, 3888 flow [2024-06-28 02:25:25,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:25,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:25,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:25,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 02:25:25,738 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:25,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:25,739 INFO L85 PathProgramCache]: Analyzing trace with hash -883919764, now seen corresponding path program 7 times [2024-06-28 02:25:25,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:25,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354098453] [2024-06-28 02:25:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:25,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:26,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354098453] [2024-06-28 02:25:26,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354098453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:26,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:26,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:26,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690608246] [2024-06-28 02:25:26,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:26,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:26,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:26,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:26,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:26,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:26,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 309 transitions, 3888 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:26,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:26,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:26,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:27,428 INFO L124 PetriNetUnfolderBase]: 867/1588 cut-off events. [2024-06-28 02:25:27,428 INFO L125 PetriNetUnfolderBase]: For 94693/94693 co-relation queries the response was YES. [2024-06-28 02:25:27,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 1588 events. 867/1588 cut-off events. For 94693/94693 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9160 event pairs, 123 based on Foata normal form. 2/1589 useless extension candidates. Maximal degree in co-relation 9943. Up to 1352 conditions per place. [2024-06-28 02:25:27,444 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 36 changer transitions 0/329 dead transitions. [2024-06-28 02:25:27,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 329 transitions, 4634 flow [2024-06-28 02:25:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 02:25:27,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 02:25:27,445 INFO L175 Difference]: Start difference. First operand has 371 places, 309 transitions, 3888 flow. Second operand 11 states and 110 transitions. [2024-06-28 02:25:27,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 329 transitions, 4634 flow [2024-06-28 02:25:27,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 329 transitions, 4480 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:27,965 INFO L231 Difference]: Finished difference. Result has 373 places, 310 transitions, 3860 flow [2024-06-28 02:25:27,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3860, PETRI_PLACES=373, PETRI_TRANSITIONS=310} [2024-06-28 02:25:27,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-28 02:25:27,966 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 310 transitions, 3860 flow [2024-06-28 02:25:27,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:27,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:27,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:27,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 02:25:27,966 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:27,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1978098586, now seen corresponding path program 8 times [2024-06-28 02:25:27,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:27,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969083540] [2024-06-28 02:25:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:27,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969083540] [2024-06-28 02:25:29,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969083540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:29,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:29,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:29,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240349663] [2024-06-28 02:25:29,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:29,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:29,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:29,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:29,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:29,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 310 transitions, 3860 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:29,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:29,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:29,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:29,862 INFO L124 PetriNetUnfolderBase]: 871/1596 cut-off events. [2024-06-28 02:25:29,862 INFO L125 PetriNetUnfolderBase]: For 94601/94601 co-relation queries the response was YES. [2024-06-28 02:25:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10110 conditions, 1596 events. 871/1596 cut-off events. For 94601/94601 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9249 event pairs, 170 based on Foata normal form. 2/1597 useless extension candidates. Maximal degree in co-relation 9940. Up to 1446 conditions per place. [2024-06-28 02:25:29,881 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 35 changer transitions 0/330 dead transitions. [2024-06-28 02:25:29,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 330 transitions, 4612 flow [2024-06-28 02:25:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:25:29,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 02:25:29,882 INFO L175 Difference]: Start difference. First operand has 373 places, 310 transitions, 3860 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:25:29,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 330 transitions, 4612 flow [2024-06-28 02:25:30,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 330 transitions, 4498 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:30,383 INFO L231 Difference]: Finished difference. Result has 375 places, 311 transitions, 3870 flow [2024-06-28 02:25:30,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3870, PETRI_PLACES=375, PETRI_TRANSITIONS=311} [2024-06-28 02:25:30,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-28 02:25:30,384 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 311 transitions, 3870 flow [2024-06-28 02:25:30,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:30,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:30,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:30,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 02:25:30,384 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:30,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1974523666, now seen corresponding path program 9 times [2024-06-28 02:25:30,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:30,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147259601] [2024-06-28 02:25:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:30,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:31,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147259601] [2024-06-28 02:25:31,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147259601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:31,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:31,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:31,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979267535] [2024-06-28 02:25:31,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:31,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:31,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:31,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:31,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 311 transitions, 3870 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:31,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:31,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:31,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:31,929 INFO L124 PetriNetUnfolderBase]: 875/1604 cut-off events. [2024-06-28 02:25:31,929 INFO L125 PetriNetUnfolderBase]: For 96650/96650 co-relation queries the response was YES. [2024-06-28 02:25:31,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10149 conditions, 1604 events. 875/1604 cut-off events. For 96650/96650 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9323 event pairs, 177 based on Foata normal form. 2/1604 useless extension candidates. Maximal degree in co-relation 9978. Up to 1461 conditions per place. [2024-06-28 02:25:31,948 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 290 selfloop transitions, 38 changer transitions 0/330 dead transitions. [2024-06-28 02:25:31,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 330 transitions, 4624 flow [2024-06-28 02:25:31,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:31,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:25:31,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:25:31,949 INFO L175 Difference]: Start difference. First operand has 375 places, 311 transitions, 3870 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:25:31,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 330 transitions, 4624 flow [2024-06-28 02:25:32,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 330 transitions, 4510 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:32,431 INFO L231 Difference]: Finished difference. Result has 377 places, 312 transitions, 3888 flow [2024-06-28 02:25:32,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3756, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3888, PETRI_PLACES=377, PETRI_TRANSITIONS=312} [2024-06-28 02:25:32,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 02:25:32,432 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 312 transitions, 3888 flow [2024-06-28 02:25:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:32,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:32,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:32,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 02:25:32,432 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:32,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1974379516, now seen corresponding path program 10 times [2024-06-28 02:25:32,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:32,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209914532] [2024-06-28 02:25:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:32,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209914532] [2024-06-28 02:25:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209914532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:33,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012327094] [2024-06-28 02:25:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:33,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:33,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:33,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:33,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 312 transitions, 3888 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:33,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:33,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:33,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:34,202 INFO L124 PetriNetUnfolderBase]: 886/1625 cut-off events. [2024-06-28 02:25:34,203 INFO L125 PetriNetUnfolderBase]: For 110315/110315 co-relation queries the response was YES. [2024-06-28 02:25:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10596 conditions, 1625 events. 886/1625 cut-off events. For 110315/110315 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9490 event pairs, 171 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 10424. Up to 1457 conditions per place. [2024-06-28 02:25:34,223 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 43 changer transitions 0/333 dead transitions. [2024-06-28 02:25:34,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 333 transitions, 4916 flow [2024-06-28 02:25:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:25:34,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:25:34,224 INFO L175 Difference]: Start difference. First operand has 377 places, 312 transitions, 3888 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:25:34,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 333 transitions, 4916 flow [2024-06-28 02:25:34,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 333 transitions, 4794 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:34,707 INFO L231 Difference]: Finished difference. Result has 379 places, 314 transitions, 3962 flow [2024-06-28 02:25:34,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3766, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3962, PETRI_PLACES=379, PETRI_TRANSITIONS=314} [2024-06-28 02:25:34,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-28 02:25:34,708 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 314 transitions, 3962 flow [2024-06-28 02:25:34,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:34,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:34,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:34,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 02:25:34,708 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:34,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1974373936, now seen corresponding path program 11 times [2024-06-28 02:25:34,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:34,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148638424] [2024-06-28 02:25:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:35,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:35,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148638424] [2024-06-28 02:25:35,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148638424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:35,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:35,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328523057] [2024-06-28 02:25:35,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:35,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:35,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:36,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:36,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 314 transitions, 3962 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:36,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:36,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:36,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:36,657 INFO L124 PetriNetUnfolderBase]: 883/1620 cut-off events. [2024-06-28 02:25:36,657 INFO L125 PetriNetUnfolderBase]: For 100371/100371 co-relation queries the response was YES. [2024-06-28 02:25:36,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 1620 events. 883/1620 cut-off events. For 100371/100371 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9457 event pairs, 172 based on Foata normal form. 2/1621 useless extension candidates. Maximal degree in co-relation 10094. Up to 1471 conditions per place. [2024-06-28 02:25:36,677 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 287 selfloop transitions, 43 changer transitions 0/332 dead transitions. [2024-06-28 02:25:36,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 332 transitions, 4678 flow [2024-06-28 02:25:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:25:36,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:25:36,678 INFO L175 Difference]: Start difference. First operand has 379 places, 314 transitions, 3962 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:25:36,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 332 transitions, 4678 flow [2024-06-28 02:25:37,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 332 transitions, 4524 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 02:25:37,239 INFO L231 Difference]: Finished difference. Result has 383 places, 314 transitions, 3899 flow [2024-06-28 02:25:37,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3808, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3899, PETRI_PLACES=383, PETRI_TRANSITIONS=314} [2024-06-28 02:25:37,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 02:25:37,240 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 314 transitions, 3899 flow [2024-06-28 02:25:37,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:37,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:37,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:37,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 02:25:37,240 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:37,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1974373719, now seen corresponding path program 2 times [2024-06-28 02:25:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:37,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883592077] [2024-06-28 02:25:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:37,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:38,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883592077] [2024-06-28 02:25:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883592077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:38,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:38,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:38,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192406858] [2024-06-28 02:25:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:38,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:38,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:38,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:38,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:38,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 314 transitions, 3899 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:38,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:38,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:38,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:39,388 INFO L124 PetriNetUnfolderBase]: 886/1625 cut-off events. [2024-06-28 02:25:39,388 INFO L125 PetriNetUnfolderBase]: For 95009/95009 co-relation queries the response was YES. [2024-06-28 02:25:39,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10261 conditions, 1625 events. 886/1625 cut-off events. For 95009/95009 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9459 event pairs, 177 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 10086. Up to 1473 conditions per place. [2024-06-28 02:25:39,408 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 285 selfloop transitions, 45 changer transitions 0/332 dead transitions. [2024-06-28 02:25:39,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 332 transitions, 4705 flow [2024-06-28 02:25:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:25:39,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 02:25:39,409 INFO L175 Difference]: Start difference. First operand has 383 places, 314 transitions, 3899 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:25:39,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 332 transitions, 4705 flow [2024-06-28 02:25:39,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 332 transitions, 4616 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:39,963 INFO L231 Difference]: Finished difference. Result has 383 places, 316 transitions, 4008 flow [2024-06-28 02:25:39,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3810, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4008, PETRI_PLACES=383, PETRI_TRANSITIONS=316} [2024-06-28 02:25:39,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 02:25:39,964 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 316 transitions, 4008 flow [2024-06-28 02:25:39,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:39,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:39,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:39,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 02:25:39,964 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:39,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:39,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1795315342, now seen corresponding path program 1 times [2024-06-28 02:25:39,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:39,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228906903] [2024-06-28 02:25:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:39,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228906903] [2024-06-28 02:25:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228906903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526093923] [2024-06-28 02:25:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:41,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:41,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:41,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 316 transitions, 4008 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:41,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:41,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:41,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:41,854 INFO L124 PetriNetUnfolderBase]: 906/1671 cut-off events. [2024-06-28 02:25:41,855 INFO L125 PetriNetUnfolderBase]: For 146541/146541 co-relation queries the response was YES. [2024-06-28 02:25:41,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10506 conditions, 1671 events. 906/1671 cut-off events. For 146541/146541 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9830 event pairs, 179 based on Foata normal form. 10/1677 useless extension candidates. Maximal degree in co-relation 10330. Up to 1481 conditions per place. [2024-06-28 02:25:41,874 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 291 selfloop transitions, 39 changer transitions 7/339 dead transitions. [2024-06-28 02:25:41,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 339 transitions, 4805 flow [2024-06-28 02:25:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:25:41,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 02:25:41,875 INFO L175 Difference]: Start difference. First operand has 383 places, 316 transitions, 4008 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:25:41,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 339 transitions, 4805 flow [2024-06-28 02:25:42,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 339 transitions, 4661 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:42,428 INFO L231 Difference]: Finished difference. Result has 386 places, 314 transitions, 3912 flow [2024-06-28 02:25:42,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3912, PETRI_PLACES=386, PETRI_TRANSITIONS=314} [2024-06-28 02:25:42,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 02:25:42,429 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 314 transitions, 3912 flow [2024-06-28 02:25:42,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:42,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:42,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:42,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 02:25:42,429 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:42,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1646944196, now seen corresponding path program 12 times [2024-06-28 02:25:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086757121] [2024-06-28 02:25:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:43,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086757121] [2024-06-28 02:25:43,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086757121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:43,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:43,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266063207] [2024-06-28 02:25:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:43,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:43,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 314 transitions, 3912 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:43,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:43,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:43,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:44,145 INFO L124 PetriNetUnfolderBase]: 884/1629 cut-off events. [2024-06-28 02:25:44,146 INFO L125 PetriNetUnfolderBase]: For 104655/104655 co-relation queries the response was YES. [2024-06-28 02:25:44,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10305 conditions, 1629 events. 884/1629 cut-off events. For 104655/104655 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9540 event pairs, 164 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 10128. Up to 1474 conditions per place. [2024-06-28 02:25:44,165 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 42 changer transitions 0/333 dead transitions. [2024-06-28 02:25:44,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 333 transitions, 4686 flow [2024-06-28 02:25:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:25:44,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:25:44,166 INFO L175 Difference]: Start difference. First operand has 386 places, 314 transitions, 3912 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:25:44,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 333 transitions, 4686 flow [2024-06-28 02:25:44,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 333 transitions, 4600 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:44,752 INFO L231 Difference]: Finished difference. Result has 387 places, 315 transitions, 3970 flow [2024-06-28 02:25:44,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3970, PETRI_PLACES=387, PETRI_TRANSITIONS=315} [2024-06-28 02:25:44,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 02:25:44,753 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 315 transitions, 3970 flow [2024-06-28 02:25:44,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:44,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:44,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:44,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 02:25:44,753 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:44,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1646949776, now seen corresponding path program 13 times [2024-06-28 02:25:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898980183] [2024-06-28 02:25:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:46,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898980183] [2024-06-28 02:25:46,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898980183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:46,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:46,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:46,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026243606] [2024-06-28 02:25:46,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:46,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:46,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:46,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:46,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:46,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 315 transitions, 3970 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:46,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:46,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:46,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:46,694 INFO L124 PetriNetUnfolderBase]: 888/1637 cut-off events. [2024-06-28 02:25:46,695 INFO L125 PetriNetUnfolderBase]: For 105450/105450 co-relation queries the response was YES. [2024-06-28 02:25:46,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10445 conditions, 1637 events. 888/1637 cut-off events. For 105450/105450 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9633 event pairs, 164 based on Foata normal form. 2/1635 useless extension candidates. Maximal degree in co-relation 10267. Up to 1482 conditions per place. [2024-06-28 02:25:46,714 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 41 changer transitions 0/334 dead transitions. [2024-06-28 02:25:46,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 334 transitions, 4744 flow [2024-06-28 02:25:46,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:25:46,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 02:25:46,715 INFO L175 Difference]: Start difference. First operand has 387 places, 315 transitions, 3970 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:25:46,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 334 transitions, 4744 flow [2024-06-28 02:25:47,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 334 transitions, 4610 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:47,241 INFO L231 Difference]: Finished difference. Result has 389 places, 316 transitions, 3980 flow [2024-06-28 02:25:47,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3980, PETRI_PLACES=389, PETRI_TRANSITIONS=316} [2024-06-28 02:25:47,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 02:25:47,241 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 316 transitions, 3980 flow [2024-06-28 02:25:47,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:47,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:47,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 02:25:47,242 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:47,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash -770912462, now seen corresponding path program 14 times [2024-06-28 02:25:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:47,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979858469] [2024-06-28 02:25:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:47,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:48,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:48,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979858469] [2024-06-28 02:25:48,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979858469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:48,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:48,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027594136] [2024-06-28 02:25:48,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:48,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:48,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:48,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:48,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:48,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:48,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 316 transitions, 3980 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:48,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:48,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:48,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:49,325 INFO L124 PetriNetUnfolderBase]: 892/1645 cut-off events. [2024-06-28 02:25:49,325 INFO L125 PetriNetUnfolderBase]: For 107632/107632 co-relation queries the response was YES. [2024-06-28 02:25:49,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10494 conditions, 1645 events. 892/1645 cut-off events. For 107632/107632 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9666 event pairs, 162 based on Foata normal form. 2/1643 useless extension candidates. Maximal degree in co-relation 10315. Up to 1432 conditions per place. [2024-06-28 02:25:49,346 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 279 selfloop transitions, 54 changer transitions 0/335 dead transitions. [2024-06-28 02:25:49,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 335 transitions, 4762 flow [2024-06-28 02:25:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:25:49,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:25:49,347 INFO L175 Difference]: Start difference. First operand has 389 places, 316 transitions, 3980 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:25:49,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 335 transitions, 4762 flow [2024-06-28 02:25:49,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 335 transitions, 4628 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:49,936 INFO L231 Difference]: Finished difference. Result has 391 places, 317 transitions, 4018 flow [2024-06-28 02:25:49,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3846, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4018, PETRI_PLACES=391, PETRI_TRANSITIONS=317} [2024-06-28 02:25:49,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 02:25:49,937 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 317 transitions, 4018 flow [2024-06-28 02:25:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:49,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:49,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:49,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 02:25:49,937 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:49,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1440014050, now seen corresponding path program 2 times [2024-06-28 02:25:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:49,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647405856] [2024-06-28 02:25:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:49,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:51,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:51,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647405856] [2024-06-28 02:25:51,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647405856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:51,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598975191] [2024-06-28 02:25:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:51,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:51,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:51,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 317 transitions, 4018 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:51,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:51,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:51,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:52,074 INFO L124 PetriNetUnfolderBase]: 940/1745 cut-off events. [2024-06-28 02:25:52,075 INFO L125 PetriNetUnfolderBase]: For 215034/215034 co-relation queries the response was YES. [2024-06-28 02:25:52,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12401 conditions, 1745 events. 940/1745 cut-off events. For 215034/215034 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10346 event pairs, 176 based on Foata normal form. 8/1749 useless extension candidates. Maximal degree in co-relation 12221. Up to 1327 conditions per place. [2024-06-28 02:25:52,097 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 275 selfloop transitions, 62 changer transitions 7/346 dead transitions. [2024-06-28 02:25:52,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 346 transitions, 5162 flow [2024-06-28 02:25:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:25:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:25:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 02:25:52,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 02:25:52,098 INFO L175 Difference]: Start difference. First operand has 391 places, 317 transitions, 4018 flow. Second operand 12 states and 137 transitions. [2024-06-28 02:25:52,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 346 transitions, 5162 flow [2024-06-28 02:25:52,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 346 transitions, 5000 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:52,941 INFO L231 Difference]: Finished difference. Result has 395 places, 316 transitions, 4023 flow [2024-06-28 02:25:52,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4023, PETRI_PLACES=395, PETRI_TRANSITIONS=316} [2024-06-28 02:25:52,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 02:25:52,942 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 316 transitions, 4023 flow [2024-06-28 02:25:52,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:52,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:52,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:52,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 02:25:52,942 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:52,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash -977715632, now seen corresponding path program 15 times [2024-06-28 02:25:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:52,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693654868] [2024-06-28 02:25:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:54,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:54,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693654868] [2024-06-28 02:25:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693654868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:54,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994373958] [2024-06-28 02:25:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:54,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:54,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:54,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 316 transitions, 4023 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:54,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:54,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:54,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:54,843 INFO L124 PetriNetUnfolderBase]: 910/1683 cut-off events. [2024-06-28 02:25:54,843 INFO L125 PetriNetUnfolderBase]: For 183837/183837 co-relation queries the response was YES. [2024-06-28 02:25:54,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12101 conditions, 1683 events. 910/1683 cut-off events. For 183837/183837 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9907 event pairs, 176 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 11919. Up to 1528 conditions per place. [2024-06-28 02:25:54,864 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 40 changer transitions 0/335 dead transitions. [2024-06-28 02:25:54,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 335 transitions, 4801 flow [2024-06-28 02:25:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:25:54,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 02:25:54,865 INFO L175 Difference]: Start difference. First operand has 395 places, 316 transitions, 4023 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:25:54,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 335 transitions, 4801 flow [2024-06-28 02:25:55,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 335 transitions, 4685 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:25:55,687 INFO L231 Difference]: Finished difference. Result has 393 places, 317 transitions, 4055 flow [2024-06-28 02:25:55,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3907, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=393, PETRI_TRANSITIONS=317} [2024-06-28 02:25:55,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-28 02:25:55,687 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 317 transitions, 4055 flow [2024-06-28 02:25:55,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:55,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:55,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 02:25:55,688 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:55,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -971993776, now seen corresponding path program 3 times [2024-06-28 02:25:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444346551] [2024-06-28 02:25:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:57,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444346551] [2024-06-28 02:25:57,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444346551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:57,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:57,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:25:57,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694451682] [2024-06-28 02:25:57,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:57,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:25:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:25:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:25:57,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:25:57,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 317 transitions, 4055 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:57,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:57,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:25:57,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:57,931 INFO L124 PetriNetUnfolderBase]: 926/1719 cut-off events. [2024-06-28 02:25:57,931 INFO L125 PetriNetUnfolderBase]: For 231360/231360 co-relation queries the response was YES. [2024-06-28 02:25:57,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12232 conditions, 1719 events. 926/1719 cut-off events. For 231360/231360 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10166 event pairs, 188 based on Foata normal form. 10/1725 useless extension candidates. Maximal degree in co-relation 12051. Up to 1514 conditions per place. [2024-06-28 02:25:57,952 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 289 selfloop transitions, 41 changer transitions 7/339 dead transitions. [2024-06-28 02:25:57,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 339 transitions, 4849 flow [2024-06-28 02:25:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:25:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:25:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:25:57,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 02:25:57,953 INFO L175 Difference]: Start difference. First operand has 393 places, 317 transitions, 4055 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:25:57,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 339 transitions, 4849 flow [2024-06-28 02:25:58,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 339 transitions, 4711 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:25:58,748 INFO L231 Difference]: Finished difference. Result has 395 places, 314 transitions, 3967 flow [2024-06-28 02:25:58,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3967, PETRI_PLACES=395, PETRI_TRANSITIONS=314} [2024-06-28 02:25:58,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 02:25:58,748 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 314 transitions, 3967 flow [2024-06-28 02:25:58,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:25:58,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:58,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:58,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 02:25:58,749 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:25:58,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash -770645056, now seen corresponding path program 4 times [2024-06-28 02:25:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:58,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467749748] [2024-06-28 02:25:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:58,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:00,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:00,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467749748] [2024-06-28 02:26:00,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467749748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:00,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:00,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402445888] [2024-06-28 02:26:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:00,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:00,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:00,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 314 transitions, 3967 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:00,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:00,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:00,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:00,898 INFO L124 PetriNetUnfolderBase]: 916/1705 cut-off events. [2024-06-28 02:26:00,899 INFO L125 PetriNetUnfolderBase]: For 233666/233666 co-relation queries the response was YES. [2024-06-28 02:26:00,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12059 conditions, 1705 events. 916/1705 cut-off events. For 233666/233666 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10096 event pairs, 182 based on Foata normal form. 10/1711 useless extension candidates. Maximal degree in co-relation 11877. Up to 1421 conditions per place. [2024-06-28 02:26:00,922 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 274 selfloop transitions, 53 changer transitions 11/340 dead transitions. [2024-06-28 02:26:00,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 340 transitions, 4779 flow [2024-06-28 02:26:00,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:26:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:26:00,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 02:26:00,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:26:00,923 INFO L175 Difference]: Start difference. First operand has 395 places, 314 transitions, 3967 flow. Second operand 13 states and 143 transitions. [2024-06-28 02:26:00,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 340 transitions, 4779 flow [2024-06-28 02:26:01,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 340 transitions, 4689 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:01,721 INFO L231 Difference]: Finished difference. Result has 396 places, 309 transitions, 3913 flow [2024-06-28 02:26:01,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3877, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3913, PETRI_PLACES=396, PETRI_TRANSITIONS=309} [2024-06-28 02:26:01,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 02:26:01,721 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 309 transitions, 3913 flow [2024-06-28 02:26:01,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:01,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:01,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:01,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 02:26:01,722 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:01,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash -778264112, now seen corresponding path program 16 times [2024-06-28 02:26:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750338849] [2024-06-28 02:26:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:02,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750338849] [2024-06-28 02:26:02,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750338849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:02,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:02,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:26:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052997791] [2024-06-28 02:26:02,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:02,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:26:02,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:26:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:26:02,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:02,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 309 transitions, 3913 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:02,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:02,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:02,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:03,249 INFO L124 PetriNetUnfolderBase]: 880/1637 cut-off events. [2024-06-28 02:26:03,249 INFO L125 PetriNetUnfolderBase]: For 172644/172644 co-relation queries the response was YES. [2024-06-28 02:26:03,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11417 conditions, 1637 events. 880/1637 cut-off events. For 172644/172644 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9600 event pairs, 179 based on Foata normal form. 2/1635 useless extension candidates. Maximal degree in co-relation 11235. Up to 1424 conditions per place. [2024-06-28 02:26:03,269 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 276 selfloop transitions, 49 changer transitions 0/327 dead transitions. [2024-06-28 02:26:03,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 327 transitions, 4621 flow [2024-06-28 02:26:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 02:26:03,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 02:26:03,270 INFO L175 Difference]: Start difference. First operand has 396 places, 309 transitions, 3913 flow. Second operand 11 states and 119 transitions. [2024-06-28 02:26:03,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 327 transitions, 4621 flow [2024-06-28 02:26:04,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 327 transitions, 4495 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 02:26:04,094 INFO L231 Difference]: Finished difference. Result has 391 places, 309 transitions, 3889 flow [2024-06-28 02:26:04,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3787, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3889, PETRI_PLACES=391, PETRI_TRANSITIONS=309} [2024-06-28 02:26:04,094 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 02:26:04,094 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 309 transitions, 3889 flow [2024-06-28 02:26:04,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:04,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:04,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 02:26:04,103 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:04,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash -778054366, now seen corresponding path program 5 times [2024-06-28 02:26:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:04,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989485502] [2024-06-28 02:26:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:05,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:05,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989485502] [2024-06-28 02:26:05,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989485502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:05,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:05,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:05,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018039487] [2024-06-28 02:26:05,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:05,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:05,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:05,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:05,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:05,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 309 transitions, 3889 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:05,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:05,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:05,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:06,225 INFO L124 PetriNetUnfolderBase]: 867/1614 cut-off events. [2024-06-28 02:26:06,225 INFO L125 PetriNetUnfolderBase]: For 160081/160081 co-relation queries the response was YES. [2024-06-28 02:26:06,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1614 events. 867/1614 cut-off events. For 160081/160081 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9486 event pairs, 164 based on Foata normal form. 10/1620 useless extension candidates. Maximal degree in co-relation 9975. Up to 1357 conditions per place. [2024-06-28 02:26:06,244 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 273 selfloop transitions, 47 changer transitions 11/333 dead transitions. [2024-06-28 02:26:06,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 333 transitions, 4679 flow [2024-06-28 02:26:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:26:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:26:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 02:26:06,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 02:26:06,245 INFO L175 Difference]: Start difference. First operand has 391 places, 309 transitions, 3889 flow. Second operand 12 states and 131 transitions. [2024-06-28 02:26:06,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 333 transitions, 4679 flow [2024-06-28 02:26:06,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 333 transitions, 4517 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:06,783 INFO L231 Difference]: Finished difference. Result has 393 places, 306 transitions, 3789 flow [2024-06-28 02:26:06,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3789, PETRI_PLACES=393, PETRI_TRANSITIONS=306} [2024-06-28 02:26:06,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-28 02:26:06,784 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 306 transitions, 3789 flow [2024-06-28 02:26:06,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:06,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:06,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:06,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 02:26:06,784 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:06,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash -778269692, now seen corresponding path program 17 times [2024-06-28 02:26:06,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:06,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885244055] [2024-06-28 02:26:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:06,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:08,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:08,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885244055] [2024-06-28 02:26:08,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885244055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:08,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:08,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52858824] [2024-06-28 02:26:08,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:08,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:08,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:08,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:08,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 306 transitions, 3789 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:08,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:08,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:08,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:08,753 INFO L124 PetriNetUnfolderBase]: 845/1572 cut-off events. [2024-06-28 02:26:08,753 INFO L125 PetriNetUnfolderBase]: For 113663/113663 co-relation queries the response was YES. [2024-06-28 02:26:08,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 1572 events. 845/1572 cut-off events. For 113663/113663 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9224 event pairs, 160 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 9735. Up to 1392 conditions per place. [2024-06-28 02:26:08,772 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 276 selfloop transitions, 47 changer transitions 0/325 dead transitions. [2024-06-28 02:26:08,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 325 transitions, 4553 flow [2024-06-28 02:26:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:26:08,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:26:08,773 INFO L175 Difference]: Start difference. First operand has 393 places, 306 transitions, 3789 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:26:08,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 325 transitions, 4553 flow [2024-06-28 02:26:09,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 325 transitions, 4453 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:09,360 INFO L231 Difference]: Finished difference. Result has 391 places, 307 transitions, 3853 flow [2024-06-28 02:26:09,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3853, PETRI_PLACES=391, PETRI_TRANSITIONS=307} [2024-06-28 02:26:09,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 02:26:09,360 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 307 transitions, 3853 flow [2024-06-28 02:26:09,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:09,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:09,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:09,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 02:26:09,361 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:09,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1644972016, now seen corresponding path program 18 times [2024-06-28 02:26:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44746632] [2024-06-28 02:26:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:09,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:10,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:10,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44746632] [2024-06-28 02:26:10,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44746632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:10,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:10,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:10,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114404500] [2024-06-28 02:26:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:10,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:10,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:10,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:10,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 307 transitions, 3853 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:10,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:10,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:10,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:10,821 INFO L124 PetriNetUnfolderBase]: 849/1578 cut-off events. [2024-06-28 02:26:10,821 INFO L125 PetriNetUnfolderBase]: For 115602/115602 co-relation queries the response was YES. [2024-06-28 02:26:10,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10075 conditions, 1578 events. 849/1578 cut-off events. For 115602/115602 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9243 event pairs, 114 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 9893. Up to 1294 conditions per place. [2024-06-28 02:26:10,841 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 278 selfloop transitions, 44 changer transitions 0/324 dead transitions. [2024-06-28 02:26:10,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 324 transitions, 4599 flow [2024-06-28 02:26:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 02:26:10,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 02:26:10,842 INFO L175 Difference]: Start difference. First operand has 391 places, 307 transitions, 3853 flow. Second operand 10 states and 101 transitions. [2024-06-28 02:26:10,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 324 transitions, 4599 flow [2024-06-28 02:26:11,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 324 transitions, 4445 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:11,384 INFO L231 Difference]: Finished difference. Result has 392 places, 308 transitions, 3863 flow [2024-06-28 02:26:11,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3863, PETRI_PLACES=392, PETRI_TRANSITIONS=308} [2024-06-28 02:26:11,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 02:26:11,385 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 308 transitions, 3863 flow [2024-06-28 02:26:11,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:11,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:11,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:11,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 02:26:11,385 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:11,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:11,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1199549268, now seen corresponding path program 19 times [2024-06-28 02:26:11,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:11,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779600418] [2024-06-28 02:26:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:11,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:12,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:12,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779600418] [2024-06-28 02:26:12,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779600418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:12,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:12,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:12,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676173317] [2024-06-28 02:26:12,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:12,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:12,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:12,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 308 transitions, 3863 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:12,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:12,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:12,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:13,133 INFO L124 PetriNetUnfolderBase]: 853/1586 cut-off events. [2024-06-28 02:26:13,133 INFO L125 PetriNetUnfolderBase]: For 117482/117482 co-relation queries the response was YES. [2024-06-28 02:26:13,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10139 conditions, 1586 events. 853/1586 cut-off events. For 117482/117482 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9317 event pairs, 162 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 9956. Up to 1414 conditions per place. [2024-06-28 02:26:13,148 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 43 changer transitions 0/324 dead transitions. [2024-06-28 02:26:13,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 324 transitions, 4609 flow [2024-06-28 02:26:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 02:26:13,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 02:26:13,149 INFO L175 Difference]: Start difference. First operand has 392 places, 308 transitions, 3863 flow. Second operand 10 states and 104 transitions. [2024-06-28 02:26:13,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 324 transitions, 4609 flow [2024-06-28 02:26:13,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 324 transitions, 4455 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:13,754 INFO L231 Difference]: Finished difference. Result has 394 places, 309 transitions, 3871 flow [2024-06-28 02:26:13,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3871, PETRI_PLACES=394, PETRI_TRANSITIONS=309} [2024-06-28 02:26:13,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-28 02:26:13,755 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 309 transitions, 3871 flow [2024-06-28 02:26:13,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:13,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:13,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:13,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 02:26:13,755 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:13,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1195824618, now seen corresponding path program 20 times [2024-06-28 02:26:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663051228] [2024-06-28 02:26:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:13,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:14,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663051228] [2024-06-28 02:26:14,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663051228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:14,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:14,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583448417] [2024-06-28 02:26:14,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:14,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:14,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:15,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:15,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 309 transitions, 3871 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:15,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:15,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:15,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:15,684 INFO L124 PetriNetUnfolderBase]: 857/1594 cut-off events. [2024-06-28 02:26:15,684 INFO L125 PetriNetUnfolderBase]: For 115350/115350 co-relation queries the response was YES. [2024-06-28 02:26:15,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10130 conditions, 1594 events. 857/1594 cut-off events. For 115350/115350 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9386 event pairs, 162 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 9946. Up to 1371 conditions per place. [2024-06-28 02:26:15,704 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 250 selfloop transitions, 73 changer transitions 0/325 dead transitions. [2024-06-28 02:26:15,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 325 transitions, 4629 flow [2024-06-28 02:26:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:26:15,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:26:15,705 INFO L175 Difference]: Start difference. First operand has 394 places, 309 transitions, 3871 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:26:15,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 325 transitions, 4629 flow [2024-06-28 02:26:16,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 325 transitions, 4481 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:16,286 INFO L231 Difference]: Finished difference. Result has 396 places, 310 transitions, 3947 flow [2024-06-28 02:26:16,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3947, PETRI_PLACES=396, PETRI_TRANSITIONS=310} [2024-06-28 02:26:16,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 02:26:16,287 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 310 transitions, 3947 flow [2024-06-28 02:26:16,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:16,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:16,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:16,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 02:26:16,287 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:16,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1195824401, now seen corresponding path program 3 times [2024-06-28 02:26:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:16,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254489611] [2024-06-28 02:26:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:16,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:17,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:17,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254489611] [2024-06-28 02:26:17,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254489611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:17,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:17,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031533501] [2024-06-28 02:26:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:17,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:17,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:17,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:17,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 310 transitions, 3947 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:17,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:17,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:17,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:18,391 INFO L124 PetriNetUnfolderBase]: 855/1591 cut-off events. [2024-06-28 02:26:18,391 INFO L125 PetriNetUnfolderBase]: For 100853/100853 co-relation queries the response was YES. [2024-06-28 02:26:18,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 1591 events. 855/1591 cut-off events. For 100853/100853 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9355 event pairs, 162 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 9769. Up to 1372 conditions per place. [2024-06-28 02:26:18,411 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 73 changer transitions 0/323 dead transitions. [2024-06-28 02:26:18,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 323 transitions, 4631 flow [2024-06-28 02:26:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:26:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:26:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:26:18,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 02:26:18,412 INFO L175 Difference]: Start difference. First operand has 396 places, 310 transitions, 3947 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:26:18,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 323 transitions, 4631 flow [2024-06-28 02:26:18,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 323 transitions, 4401 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:18,945 INFO L231 Difference]: Finished difference. Result has 397 places, 310 transitions, 3884 flow [2024-06-28 02:26:18,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3884, PETRI_PLACES=397, PETRI_TRANSITIONS=310} [2024-06-28 02:26:18,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-28 02:26:18,945 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 310 transitions, 3884 flow [2024-06-28 02:26:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:18,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:18,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 02:26:18,945 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:18,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1195974348, now seen corresponding path program 21 times [2024-06-28 02:26:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953951062] [2024-06-28 02:26:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:18,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:19,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:19,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953951062] [2024-06-28 02:26:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953951062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:19,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:19,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924898551] [2024-06-28 02:26:19,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:19,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:19,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:20,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:20,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 310 transitions, 3884 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:20,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:20,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:20,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:20,604 INFO L124 PetriNetUnfolderBase]: 859/1599 cut-off events. [2024-06-28 02:26:20,604 INFO L125 PetriNetUnfolderBase]: For 106765/106765 co-relation queries the response was YES. [2024-06-28 02:26:20,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9963 conditions, 1599 events. 859/1599 cut-off events. For 106765/106765 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9428 event pairs, 158 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 9777. Up to 1412 conditions per place. [2024-06-28 02:26:20,620 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 271 selfloop transitions, 53 changer transitions 0/326 dead transitions. [2024-06-28 02:26:20,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 326 transitions, 4634 flow [2024-06-28 02:26:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:26:20,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 02:26:20,620 INFO L175 Difference]: Start difference. First operand has 397 places, 310 transitions, 3884 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:26:20,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 326 transitions, 4634 flow [2024-06-28 02:26:21,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 326 transitions, 4439 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:21,202 INFO L231 Difference]: Finished difference. Result has 399 places, 311 transitions, 3867 flow [2024-06-28 02:26:21,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3867, PETRI_PLACES=399, PETRI_TRANSITIONS=311} [2024-06-28 02:26:21,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 02:26:21,202 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 311 transitions, 3867 flow [2024-06-28 02:26:21,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:21,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:21,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 02:26:21,202 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:21,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1195830198, now seen corresponding path program 22 times [2024-06-28 02:26:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399192257] [2024-06-28 02:26:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:22,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:22,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399192257] [2024-06-28 02:26:22,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399192257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:22,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:22,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:22,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717544875] [2024-06-28 02:26:22,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:22,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:22,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:22,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:22,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:22,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:22,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 311 transitions, 3867 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:22,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:22,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:22,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:22,957 INFO L124 PetriNetUnfolderBase]: 863/1607 cut-off events. [2024-06-28 02:26:22,957 INFO L125 PetriNetUnfolderBase]: For 105182/105182 co-relation queries the response was YES. [2024-06-28 02:26:22,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10021 conditions, 1607 events. 863/1607 cut-off events. For 105182/105182 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9463 event pairs, 164 based on Foata normal form. 2/1608 useless extension candidates. Maximal degree in co-relation 9834. Up to 1350 conditions per place. [2024-06-28 02:26:22,977 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 253 selfloop transitions, 72 changer transitions 0/327 dead transitions. [2024-06-28 02:26:22,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 327 transitions, 4625 flow [2024-06-28 02:26:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:26:22,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:26:22,978 INFO L175 Difference]: Start difference. First operand has 399 places, 311 transitions, 3867 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:26:22,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 327 transitions, 4625 flow [2024-06-28 02:26:23,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 327 transitions, 4442 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:23,514 INFO L231 Difference]: Finished difference. Result has 400 places, 312 transitions, 3902 flow [2024-06-28 02:26:23,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3686, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3902, PETRI_PLACES=400, PETRI_TRANSITIONS=312} [2024-06-28 02:26:23,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-28 02:26:23,515 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 312 transitions, 3902 flow [2024-06-28 02:26:23,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:23,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:23,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:23,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 02:26:23,515 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:23,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -827689812, now seen corresponding path program 23 times [2024-06-28 02:26:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:23,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252026020] [2024-06-28 02:26:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:23,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:24,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252026020] [2024-06-28 02:26:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252026020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:24,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:24,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:24,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436491741] [2024-06-28 02:26:24,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:24,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:24,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:24,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:24,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 312 transitions, 3902 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:24,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:24,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:24,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:25,481 INFO L124 PetriNetUnfolderBase]: 867/1615 cut-off events. [2024-06-28 02:26:25,481 INFO L125 PetriNetUnfolderBase]: For 104756/104756 co-relation queries the response was YES. [2024-06-28 02:26:25,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10071 conditions, 1615 events. 867/1615 cut-off events. For 104756/104756 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9550 event pairs, 138 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 9884. Up to 1397 conditions per place. [2024-06-28 02:26:25,501 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 280 selfloop transitions, 49 changer transitions 0/331 dead transitions. [2024-06-28 02:26:25,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 331 transitions, 4683 flow [2024-06-28 02:26:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:26:25,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:26:25,502 INFO L175 Difference]: Start difference. First operand has 400 places, 312 transitions, 3902 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:26:25,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 331 transitions, 4683 flow [2024-06-28 02:26:26,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 331 transitions, 4477 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:26,057 INFO L231 Difference]: Finished difference. Result has 402 places, 313 transitions, 3868 flow [2024-06-28 02:26:26,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3698, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3868, PETRI_PLACES=402, PETRI_TRANSITIONS=313} [2024-06-28 02:26:26,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-28 02:26:26,057 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 313 transitions, 3868 flow [2024-06-28 02:26:26,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:26,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:26,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:26,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 02:26:26,058 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:26,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash -824114892, now seen corresponding path program 24 times [2024-06-28 02:26:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262367213] [2024-06-28 02:26:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:27,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:27,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262367213] [2024-06-28 02:26:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262367213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:27,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918063624] [2024-06-28 02:26:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:27,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:27,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:27,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 313 transitions, 3868 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:27,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:27,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:27,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:27,933 INFO L124 PetriNetUnfolderBase]: 871/1623 cut-off events. [2024-06-28 02:26:27,934 INFO L125 PetriNetUnfolderBase]: For 105525/105525 co-relation queries the response was YES. [2024-06-28 02:26:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10060 conditions, 1623 events. 871/1623 cut-off events. For 105525/105525 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9627 event pairs, 175 based on Foata normal form. 2/1624 useless extension candidates. Maximal degree in co-relation 9872. Up to 1447 conditions per place. [2024-06-28 02:26:27,954 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 279 selfloop transitions, 51 changer transitions 0/332 dead transitions. [2024-06-28 02:26:27,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 332 transitions, 4655 flow [2024-06-28 02:26:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:26:27,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:26:27,955 INFO L175 Difference]: Start difference. First operand has 402 places, 313 transitions, 3868 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:26:27,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 332 transitions, 4655 flow [2024-06-28 02:26:28,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 332 transitions, 4495 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:28,544 INFO L231 Difference]: Finished difference. Result has 404 places, 314 transitions, 3884 flow [2024-06-28 02:26:28,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3884, PETRI_PLACES=404, PETRI_TRANSITIONS=314} [2024-06-28 02:26:28,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-28 02:26:28,545 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 314 transitions, 3884 flow [2024-06-28 02:26:28,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:28,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:28,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:28,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 02:26:28,545 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:28,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash -823970742, now seen corresponding path program 25 times [2024-06-28 02:26:28,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:28,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644572450] [2024-06-28 02:26:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:28,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:29,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644572450] [2024-06-28 02:26:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644572450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:29,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:29,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:29,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774621321] [2024-06-28 02:26:29,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:29,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:29,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:29,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:29,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 314 transitions, 3884 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:29,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:29,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:29,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:30,512 INFO L124 PetriNetUnfolderBase]: 875/1631 cut-off events. [2024-06-28 02:26:30,512 INFO L125 PetriNetUnfolderBase]: For 105352/105352 co-relation queries the response was YES. [2024-06-28 02:26:30,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10093 conditions, 1631 events. 875/1631 cut-off events. For 105352/105352 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9694 event pairs, 175 based on Foata normal form. 2/1632 useless extension candidates. Maximal degree in co-relation 9904. Up to 1449 conditions per place. [2024-06-28 02:26:30,533 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 274 selfloop transitions, 57 changer transitions 0/333 dead transitions. [2024-06-28 02:26:30,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 333 transitions, 4677 flow [2024-06-28 02:26:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:26:30,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 02:26:30,534 INFO L175 Difference]: Start difference. First operand has 404 places, 314 transitions, 3884 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:26:30,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 333 transitions, 4677 flow [2024-06-28 02:26:31,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 333 transitions, 4513 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:31,176 INFO L231 Difference]: Finished difference. Result has 406 places, 315 transitions, 3908 flow [2024-06-28 02:26:31,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3722, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3908, PETRI_PLACES=406, PETRI_TRANSITIONS=315} [2024-06-28 02:26:31,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-28 02:26:31,177 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 315 transitions, 3908 flow [2024-06-28 02:26:31,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:31,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:31,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:31,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 02:26:31,177 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:31,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:31,177 INFO L85 PathProgramCache]: Analyzing trace with hash -823964945, now seen corresponding path program 4 times [2024-06-28 02:26:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:31,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101658991] [2024-06-28 02:26:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:31,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:32,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101658991] [2024-06-28 02:26:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101658991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:32,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:32,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:32,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665948129] [2024-06-28 02:26:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:32,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:32,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:32,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:32,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 315 transitions, 3908 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:32,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:32,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:32,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:33,309 INFO L124 PetriNetUnfolderBase]: 873/1628 cut-off events. [2024-06-28 02:26:33,309 INFO L125 PetriNetUnfolderBase]: For 90996/90996 co-relation queries the response was YES. [2024-06-28 02:26:33,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 1628 events. 873/1628 cut-off events. For 90996/90996 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9691 event pairs, 177 based on Foata normal form. 1/1628 useless extension candidates. Maximal degree in co-relation 9646. Up to 1442 conditions per place. [2024-06-28 02:26:33,331 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 63 changer transitions 0/331 dead transitions. [2024-06-28 02:26:33,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 331 transitions, 4631 flow [2024-06-28 02:26:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:26:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:26:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 02:26:33,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 02:26:33,332 INFO L175 Difference]: Start difference. First operand has 406 places, 315 transitions, 3908 flow. Second operand 9 states and 103 transitions. [2024-06-28 02:26:33,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 331 transitions, 4631 flow [2024-06-28 02:26:33,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 331 transitions, 4449 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:33,948 INFO L231 Difference]: Finished difference. Result has 406 places, 315 transitions, 3868 flow [2024-06-28 02:26:33,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3726, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3868, PETRI_PLACES=406, PETRI_TRANSITIONS=315} [2024-06-28 02:26:33,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-28 02:26:33,949 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 315 transitions, 3868 flow [2024-06-28 02:26:33,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:33,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:33,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:33,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 02:26:33,949 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:33,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash -823965162, now seen corresponding path program 26 times [2024-06-28 02:26:33,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:33,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184926062] [2024-06-28 02:26:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:33,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:35,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184926062] [2024-06-28 02:26:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184926062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97636166] [2024-06-28 02:26:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:35,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:35,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:35,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 315 transitions, 3868 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:35,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:35,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:35,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:35,902 INFO L124 PetriNetUnfolderBase]: 877/1636 cut-off events. [2024-06-28 02:26:35,903 INFO L125 PetriNetUnfolderBase]: For 97115/97115 co-relation queries the response was YES. [2024-06-28 02:26:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9884 conditions, 1636 events. 877/1636 cut-off events. For 97115/97115 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9741 event pairs, 177 based on Foata normal form. 2/1637 useless extension candidates. Maximal degree in co-relation 9694. Up to 1444 conditions per place. [2024-06-28 02:26:35,924 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 63 changer transitions 0/334 dead transitions. [2024-06-28 02:26:35,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 334 transitions, 4667 flow [2024-06-28 02:26:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:26:35,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:26:35,925 INFO L175 Difference]: Start difference. First operand has 406 places, 315 transitions, 3868 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:26:35,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 334 transitions, 4667 flow [2024-06-28 02:26:36,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 334 transitions, 4296 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:36,471 INFO L231 Difference]: Finished difference. Result has 406 places, 316 transitions, 3700 flow [2024-06-28 02:26:36,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3700, PETRI_PLACES=406, PETRI_TRANSITIONS=316} [2024-06-28 02:26:36,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-28 02:26:36,471 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 316 transitions, 3700 flow [2024-06-28 02:26:36,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:36,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:36,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 02:26:36,472 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:36,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash -679864886, now seen corresponding path program 6 times [2024-06-28 02:26:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:36,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672422069] [2024-06-28 02:26:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:37,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:37,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672422069] [2024-06-28 02:26:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672422069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:37,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:37,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:37,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719166921] [2024-06-28 02:26:37,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:37,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:37,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:37,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:37,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:37,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:37,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 316 transitions, 3700 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:37,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:37,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:37,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:38,278 INFO L124 PetriNetUnfolderBase]: 897/1682 cut-off events. [2024-06-28 02:26:38,278 INFO L125 PetriNetUnfolderBase]: For 145830/145830 co-relation queries the response was YES. [2024-06-28 02:26:38,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10009 conditions, 1682 events. 897/1682 cut-off events. For 145830/145830 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10115 event pairs, 182 based on Foata normal form. 10/1688 useless extension candidates. Maximal degree in co-relation 9819. Up to 1456 conditions per place. [2024-06-28 02:26:38,300 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 44 changer transitions 19/341 dead transitions. [2024-06-28 02:26:38,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 341 transitions, 4582 flow [2024-06-28 02:26:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:26:38,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:26:38,301 INFO L175 Difference]: Start difference. First operand has 406 places, 316 transitions, 3700 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:26:38,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 341 transitions, 4582 flow [2024-06-28 02:26:38,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 341 transitions, 4329 flow, removed 63 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:38,796 INFO L231 Difference]: Finished difference. Result has 407 places, 308 transitions, 3489 flow [2024-06-28 02:26:38,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3489, PETRI_PLACES=407, PETRI_TRANSITIONS=308} [2024-06-28 02:26:38,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 02:26:38,796 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 308 transitions, 3489 flow [2024-06-28 02:26:38,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:38,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:38,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:38,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 02:26:38,797 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:38,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash 172842872, now seen corresponding path program 27 times [2024-06-28 02:26:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999635105] [2024-06-28 02:26:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:39,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:39,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999635105] [2024-06-28 02:26:39,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999635105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:39,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:39,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:26:39,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747621590] [2024-06-28 02:26:39,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:39,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:26:39,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:26:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:26:39,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:39,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 308 transitions, 3489 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:39,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:39,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:39,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:40,527 INFO L124 PetriNetUnfolderBase]: 855/1604 cut-off events. [2024-06-28 02:26:40,527 INFO L125 PetriNetUnfolderBase]: For 94673/94673 co-relation queries the response was YES. [2024-06-28 02:26:40,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9395 conditions, 1604 events. 855/1604 cut-off events. For 94673/94673 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9540 event pairs, 158 based on Foata normal form. 2/1602 useless extension candidates. Maximal degree in co-relation 9206. Up to 1401 conditions per place. [2024-06-28 02:26:40,547 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 54 changer transitions 0/325 dead transitions. [2024-06-28 02:26:40,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 325 transitions, 4255 flow [2024-06-28 02:26:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:26:40,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:26:40,548 INFO L175 Difference]: Start difference. First operand has 407 places, 308 transitions, 3489 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:26:40,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 325 transitions, 4255 flow [2024-06-28 02:26:41,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 325 transitions, 4047 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-28 02:26:41,174 INFO L231 Difference]: Finished difference. Result has 399 places, 309 transitions, 3465 flow [2024-06-28 02:26:41,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3465, PETRI_PLACES=399, PETRI_TRANSITIONS=309} [2024-06-28 02:26:41,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 02:26:41,174 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 309 transitions, 3465 flow [2024-06-28 02:26:41,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:41,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:41,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:41,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 02:26:41,175 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:41,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash 172837292, now seen corresponding path program 28 times [2024-06-28 02:26:41,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:41,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665241571] [2024-06-28 02:26:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:41,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:42,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:42,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665241571] [2024-06-28 02:26:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665241571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:42,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:42,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:42,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147208304] [2024-06-28 02:26:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:42,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:42,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:42,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 309 transitions, 3465 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:42,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:42,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:42,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:43,647 INFO L124 PetriNetUnfolderBase]: 896/1691 cut-off events. [2024-06-28 02:26:43,647 INFO L125 PetriNetUnfolderBase]: For 194303/194303 co-relation queries the response was YES. [2024-06-28 02:26:43,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10804 conditions, 1691 events. 896/1691 cut-off events. For 194303/194303 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10151 event pairs, 169 based on Foata normal form. 8/1695 useless extension candidates. Maximal degree in co-relation 10618. Up to 1351 conditions per place. [2024-06-28 02:26:43,669 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 49 changer transitions 10/333 dead transitions. [2024-06-28 02:26:43,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 333 transitions, 4537 flow [2024-06-28 02:26:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:26:43,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:26:43,669 INFO L175 Difference]: Start difference. First operand has 399 places, 309 transitions, 3465 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:26:43,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 333 transitions, 4537 flow [2024-06-28 02:26:44,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 333 transitions, 4351 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:44,533 INFO L231 Difference]: Finished difference. Result has 401 places, 304 transitions, 3342 flow [2024-06-28 02:26:44,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3342, PETRI_PLACES=401, PETRI_TRANSITIONS=304} [2024-06-28 02:26:44,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-28 02:26:44,534 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 304 transitions, 3342 flow [2024-06-28 02:26:44,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:44,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:44,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:44,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 02:26:44,534 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:44,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash 372144662, now seen corresponding path program 29 times [2024-06-28 02:26:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130125806] [2024-06-28 02:26:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:46,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130125806] [2024-06-28 02:26:46,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130125806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:46,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:46,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:46,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132185950] [2024-06-28 02:26:46,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:46,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:46,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:46,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:46,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:46,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 304 transitions, 3342 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:46,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:46,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:46,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:46,738 INFO L124 PetriNetUnfolderBase]: 872/1643 cut-off events. [2024-06-28 02:26:46,738 INFO L125 PetriNetUnfolderBase]: For 155891/155891 co-relation queries the response was YES. [2024-06-28 02:26:46,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10481 conditions, 1643 events. 872/1643 cut-off events. For 155891/155891 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9779 event pairs, 165 based on Foata normal form. 2/1641 useless extension candidates. Maximal degree in co-relation 10308. Up to 1385 conditions per place. [2024-06-28 02:26:46,759 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 63 changer transitions 0/321 dead transitions. [2024-06-28 02:26:46,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 321 transitions, 4100 flow [2024-06-28 02:26:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:26:46,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:26:46,760 INFO L175 Difference]: Start difference. First operand has 401 places, 304 transitions, 3342 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:26:46,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 321 transitions, 4100 flow [2024-06-28 02:26:47,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 321 transitions, 3984 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 02:26:47,520 INFO L231 Difference]: Finished difference. Result has 395 places, 305 transitions, 3428 flow [2024-06-28 02:26:47,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3230, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3428, PETRI_PLACES=395, PETRI_TRANSITIONS=305} [2024-06-28 02:26:47,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 02:26:47,520 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 305 transitions, 3428 flow [2024-06-28 02:26:47,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:47,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:47,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:47,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 02:26:47,520 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:47,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:47,521 INFO L85 PathProgramCache]: Analyzing trace with hash 172693142, now seen corresponding path program 30 times [2024-06-28 02:26:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:47,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331810696] [2024-06-28 02:26:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:48,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331810696] [2024-06-28 02:26:48,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331810696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:48,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:48,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:26:48,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713417238] [2024-06-28 02:26:48,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:48,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:26:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:48,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:26:48,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:26:48,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:48,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 305 transitions, 3428 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:48,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:48,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:48,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:49,243 INFO L124 PetriNetUnfolderBase]: 876/1651 cut-off events. [2024-06-28 02:26:49,243 INFO L125 PetriNetUnfolderBase]: For 149556/149556 co-relation queries the response was YES. [2024-06-28 02:26:49,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10583 conditions, 1651 events. 876/1651 cut-off events. For 149556/149556 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9837 event pairs, 163 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 10414. Up to 1448 conditions per place. [2024-06-28 02:26:49,264 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 51 changer transitions 0/322 dead transitions. [2024-06-28 02:26:49,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 322 transitions, 4178 flow [2024-06-28 02:26:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:26:49,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:26:49,265 INFO L175 Difference]: Start difference. First operand has 395 places, 305 transitions, 3428 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:26:49,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 322 transitions, 4178 flow [2024-06-28 02:26:50,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 322 transitions, 3992 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 02:26:50,049 INFO L231 Difference]: Finished difference. Result has 396 places, 306 transitions, 3418 flow [2024-06-28 02:26:50,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3418, PETRI_PLACES=396, PETRI_TRANSITIONS=306} [2024-06-28 02:26:50,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 02:26:50,049 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 306 transitions, 3418 flow [2024-06-28 02:26:50,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:50,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:50,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:50,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 02:26:50,050 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:50,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash 178414998, now seen corresponding path program 7 times [2024-06-28 02:26:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875040539] [2024-06-28 02:26:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875040539] [2024-06-28 02:26:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875040539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:51,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:51,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768138631] [2024-06-28 02:26:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:51,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:51,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 306 transitions, 3418 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:51,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:51,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:51,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:52,039 INFO L124 PetriNetUnfolderBase]: 878/1661 cut-off events. [2024-06-28 02:26:52,039 INFO L125 PetriNetUnfolderBase]: For 168404/168404 co-relation queries the response was YES. [2024-06-28 02:26:52,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10011 conditions, 1661 events. 878/1661 cut-off events. For 168404/168404 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9919 event pairs, 175 based on Foata normal form. 10/1667 useless extension candidates. Maximal degree in co-relation 9842. Up to 1420 conditions per place. [2024-06-28 02:26:52,055 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 49 changer transitions 11/328 dead transitions. [2024-06-28 02:26:52,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 328 transitions, 4186 flow [2024-06-28 02:26:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:26:52,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:26:52,055 INFO L175 Difference]: Start difference. First operand has 396 places, 306 transitions, 3418 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:26:52,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 328 transitions, 4186 flow [2024-06-28 02:26:52,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 328 transitions, 4022 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:52,770 INFO L231 Difference]: Finished difference. Result has 399 places, 303 transitions, 3331 flow [2024-06-28 02:26:52,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3331, PETRI_PLACES=399, PETRI_TRANSITIONS=303} [2024-06-28 02:26:52,770 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 02:26:52,770 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 303 transitions, 3331 flow [2024-06-28 02:26:52,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:52,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:52,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 02:26:52,771 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:52,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 461789204, now seen corresponding path program 31 times [2024-06-28 02:26:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561671256] [2024-06-28 02:26:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:54,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:54,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561671256] [2024-06-28 02:26:54,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561671256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:54,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:54,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:54,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959121515] [2024-06-28 02:26:54,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:54,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:54,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:54,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:54,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 303 transitions, 3331 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:54,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:54,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:54,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:55,272 INFO L124 PetriNetUnfolderBase]: 856/1619 cut-off events. [2024-06-28 02:26:55,272 INFO L125 PetriNetUnfolderBase]: For 124004/124004 co-relation queries the response was YES. [2024-06-28 02:26:55,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9782 conditions, 1619 events. 856/1619 cut-off events. For 124004/124004 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9664 event pairs, 163 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 9612. Up to 1361 conditions per place. [2024-06-28 02:26:55,334 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 62 changer transitions 0/320 dead transitions. [2024-06-28 02:26:55,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 320 transitions, 4081 flow [2024-06-28 02:26:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:26:55,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:26:55,334 INFO L175 Difference]: Start difference. First operand has 399 places, 303 transitions, 3331 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:26:55,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 320 transitions, 4081 flow [2024-06-28 02:26:56,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 320 transitions, 3979 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:26:56,005 INFO L231 Difference]: Finished difference. Result has 396 places, 304 transitions, 3427 flow [2024-06-28 02:26:56,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3427, PETRI_PLACES=396, PETRI_TRANSITIONS=304} [2024-06-28 02:26:56,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 02:26:56,006 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 304 transitions, 3427 flow [2024-06-28 02:26:56,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:56,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:56,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:56,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 02:26:56,006 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:56,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:56,007 INFO L85 PathProgramCache]: Analyzing trace with hash 372354408, now seen corresponding path program 8 times [2024-06-28 02:26:56,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:56,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932968524] [2024-06-28 02:26:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:56,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:57,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:57,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:57,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932968524] [2024-06-28 02:26:57,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932968524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:57,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:57,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:26:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980472498] [2024-06-28 02:26:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:26:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:26:57,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:26:57,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:26:57,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 304 transitions, 3427 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:57,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:57,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:26:57,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:58,275 INFO L124 PetriNetUnfolderBase]: 872/1655 cut-off events. [2024-06-28 02:26:58,276 INFO L125 PetriNetUnfolderBase]: For 165595/165595 co-relation queries the response was YES. [2024-06-28 02:26:58,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 1655 events. 872/1655 cut-off events. For 165595/165595 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9923 event pairs, 169 based on Foata normal form. 10/1661 useless extension candidates. Maximal degree in co-relation 9822. Up to 1347 conditions per place. [2024-06-28 02:26:58,297 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 62 changer transitions 9/326 dead transitions. [2024-06-28 02:26:58,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 326 transitions, 4191 flow [2024-06-28 02:26:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:26:58,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:26:58,298 INFO L175 Difference]: Start difference. First operand has 396 places, 304 transitions, 3427 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:26:58,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 326 transitions, 4191 flow [2024-06-28 02:26:59,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 326 transitions, 4005 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:26:59,036 INFO L231 Difference]: Finished difference. Result has 399 places, 301 transitions, 3350 flow [2024-06-28 02:26:59,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3350, PETRI_PLACES=399, PETRI_TRANSITIONS=301} [2024-06-28 02:26:59,037 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 02:26:59,037 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 301 transitions, 3350 flow [2024-06-28 02:26:59,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:26:59,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:59,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 02:26:59,037 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:26:59,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 379496312, now seen corresponding path program 32 times [2024-06-28 02:26:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273032240] [2024-06-28 02:26:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:00,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273032240] [2024-06-28 02:27:00,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273032240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:00,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:00,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:00,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026759426] [2024-06-28 02:27:00,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:00,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:00,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:00,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 301 transitions, 3350 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:00,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:00,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:00,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:01,068 INFO L124 PetriNetUnfolderBase]: 850/1613 cut-off events. [2024-06-28 02:27:01,068 INFO L125 PetriNetUnfolderBase]: For 122097/122097 co-relation queries the response was YES. [2024-06-28 02:27:01,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 1613 events. 850/1613 cut-off events. For 122097/122097 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9654 event pairs, 163 based on Foata normal form. 2/1611 useless extension candidates. Maximal degree in co-relation 9614. Up to 1300 conditions per place. [2024-06-28 02:27:01,088 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 246 selfloop transitions, 70 changer transitions 0/318 dead transitions. [2024-06-28 02:27:01,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 318 transitions, 4100 flow [2024-06-28 02:27:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:27:01,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 02:27:01,093 INFO L175 Difference]: Start difference. First operand has 399 places, 301 transitions, 3350 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:27:01,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 318 transitions, 4100 flow [2024-06-28 02:27:01,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 318 transitions, 3968 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:27:01,768 INFO L231 Difference]: Finished difference. Result has 396 places, 302 transitions, 3432 flow [2024-06-28 02:27:01,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3432, PETRI_PLACES=396, PETRI_TRANSITIONS=302} [2024-06-28 02:27:01,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 02:27:01,769 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 302 transitions, 3432 flow [2024-06-28 02:27:01,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:01,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:01,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:01,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 02:27:01,770 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:01,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 379504248, now seen corresponding path program 9 times [2024-06-28 02:27:01,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:01,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125745467] [2024-06-28 02:27:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:01,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:03,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:03,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125745467] [2024-06-28 02:27:03,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125745467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:03,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:03,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:03,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124336537] [2024-06-28 02:27:03,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:03,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:03,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:03,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:03,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:03,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 302 transitions, 3432 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:03,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:03,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:03,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:03,650 INFO L124 PetriNetUnfolderBase]: 872/1659 cut-off events. [2024-06-28 02:27:03,650 INFO L125 PetriNetUnfolderBase]: For 164897/164897 co-relation queries the response was YES. [2024-06-28 02:27:03,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10003 conditions, 1659 events. 872/1659 cut-off events. For 164897/164897 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10017 event pairs, 169 based on Foata normal form. 10/1665 useless extension candidates. Maximal degree in co-relation 9834. Up to 1288 conditions per place. [2024-06-28 02:27:03,670 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 242 selfloop transitions, 61 changer transitions 21/326 dead transitions. [2024-06-28 02:27:03,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 326 transitions, 4208 flow [2024-06-28 02:27:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:27:03,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:27:03,671 INFO L175 Difference]: Start difference. First operand has 396 places, 302 transitions, 3432 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:27:03,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 326 transitions, 4208 flow [2024-06-28 02:27:04,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 326 transitions, 4008 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:04,355 INFO L231 Difference]: Finished difference. Result has 400 places, 293 transitions, 3250 flow [2024-06-28 02:27:04,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3250, PETRI_PLACES=400, PETRI_TRANSITIONS=293} [2024-06-28 02:27:04,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-28 02:27:04,355 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 293 transitions, 3250 flow [2024-06-28 02:27:04,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:04,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:04,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:04,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 02:27:04,355 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:04,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash 379763718, now seen corresponding path program 10 times [2024-06-28 02:27:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:04,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541220976] [2024-06-28 02:27:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:04,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:05,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541220976] [2024-06-28 02:27:05,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541220976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:05,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38632469] [2024-06-28 02:27:05,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:05,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:05,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:05,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 293 transitions, 3250 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:05,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:05,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:05,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:06,478 INFO L124 PetriNetUnfolderBase]: 839/1600 cut-off events. [2024-06-28 02:27:06,478 INFO L125 PetriNetUnfolderBase]: For 159728/159728 co-relation queries the response was YES. [2024-06-28 02:27:06,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 1600 events. 839/1600 cut-off events. For 159728/159728 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9552 event pairs, 169 based on Foata normal form. 10/1606 useless extension candidates. Maximal degree in co-relation 9374. Up to 1260 conditions per place. [2024-06-28 02:27:06,497 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 63 changer transitions 13/315 dead transitions. [2024-06-28 02:27:06,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 315 transitions, 3992 flow [2024-06-28 02:27:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:27:06,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:27:06,498 INFO L175 Difference]: Start difference. First operand has 400 places, 293 transitions, 3250 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:27:06,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 315 transitions, 3992 flow [2024-06-28 02:27:07,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 315 transitions, 3836 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:07,083 INFO L231 Difference]: Finished difference. Result has 391 places, 289 transitions, 3194 flow [2024-06-28 02:27:07,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3194, PETRI_PLACES=391, PETRI_TRANSITIONS=289} [2024-06-28 02:27:07,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 02:27:07,084 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 289 transitions, 3194 flow [2024-06-28 02:27:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:07,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:07,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 02:27:07,084 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:07,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash 379773018, now seen corresponding path program 11 times [2024-06-28 02:27:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206387425] [2024-06-28 02:27:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:08,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206387425] [2024-06-28 02:27:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206387425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:08,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731488511] [2024-06-28 02:27:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:08,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:08,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:08,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:08,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 289 transitions, 3194 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:08,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:08,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:08,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:09,199 INFO L124 PetriNetUnfolderBase]: 840/1611 cut-off events. [2024-06-28 02:27:09,199 INFO L125 PetriNetUnfolderBase]: For 175053/175053 co-relation queries the response was YES. [2024-06-28 02:27:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10087 conditions, 1611 events. 840/1611 cut-off events. For 175053/175053 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9622 event pairs, 176 based on Foata normal form. 8/1615 useless extension candidates. Maximal degree in co-relation 9920. Up to 1125 conditions per place. [2024-06-28 02:27:09,219 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 239 selfloop transitions, 58 changer transitions 16/315 dead transitions. [2024-06-28 02:27:09,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 315 transitions, 4186 flow [2024-06-28 02:27:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:27:09,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 02:27:09,220 INFO L175 Difference]: Start difference. First operand has 391 places, 289 transitions, 3194 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:27:09,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 315 transitions, 4186 flow [2024-06-28 02:27:09,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 315 transitions, 4052 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:09,927 INFO L231 Difference]: Finished difference. Result has 389 places, 282 transitions, 3127 flow [2024-06-28 02:27:09,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3127, PETRI_PLACES=389, PETRI_TRANSITIONS=282} [2024-06-28 02:27:09,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 02:27:09,927 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 282 transitions, 3127 flow [2024-06-28 02:27:09,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:09,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:09,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:09,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 02:27:09,928 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:09,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2025144596, now seen corresponding path program 33 times [2024-06-28 02:27:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574428398] [2024-06-28 02:27:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574428398] [2024-06-28 02:27:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574428398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:11,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847265605] [2024-06-28 02:27:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:11,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:11,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 282 transitions, 3127 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:11,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:11,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:11,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:11,775 INFO L124 PetriNetUnfolderBase]: 797/1520 cut-off events. [2024-06-28 02:27:11,776 INFO L125 PetriNetUnfolderBase]: For 143324/143324 co-relation queries the response was YES. [2024-06-28 02:27:11,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 1520 events. 797/1520 cut-off events. For 143324/143324 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8921 event pairs, 187 based on Foata normal form. 2/1518 useless extension candidates. Maximal degree in co-relation 9558. Up to 1306 conditions per place. [2024-06-28 02:27:11,794 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 57 changer transitions 0/297 dead transitions. [2024-06-28 02:27:11,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 297 transitions, 3827 flow [2024-06-28 02:27:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:27:11,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 02:27:11,795 INFO L175 Difference]: Start difference. First operand has 389 places, 282 transitions, 3127 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:27:11,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 297 transitions, 3827 flow [2024-06-28 02:27:12,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 297 transitions, 3694 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:12,511 INFO L231 Difference]: Finished difference. Result has 381 places, 283 transitions, 3178 flow [2024-06-28 02:27:12,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3178, PETRI_PLACES=381, PETRI_TRANSITIONS=283} [2024-06-28 02:27:12,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 02:27:12,511 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 283 transitions, 3178 flow [2024-06-28 02:27:12,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:12,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:12,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 02:27:12,512 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:12,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1649182466, now seen corresponding path program 34 times [2024-06-28 02:27:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:12,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611549561] [2024-06-28 02:27:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:12,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:13,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611549561] [2024-06-28 02:27:13,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611549561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:13,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:13,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074408785] [2024-06-28 02:27:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:13,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:13,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 283 transitions, 3178 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:13,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:13,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:13,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:14,157 INFO L124 PetriNetUnfolderBase]: 801/1528 cut-off events. [2024-06-28 02:27:14,157 INFO L125 PetriNetUnfolderBase]: For 134429/134429 co-relation queries the response was YES. [2024-06-28 02:27:14,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9742 conditions, 1528 events. 801/1528 cut-off events. For 134429/134429 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8996 event pairs, 185 based on Foata normal form. 2/1526 useless extension candidates. Maximal degree in co-relation 9580. Up to 1308 conditions per place. [2024-06-28 02:27:14,172 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 240 selfloop transitions, 56 changer transitions 0/298 dead transitions. [2024-06-28 02:27:14,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 298 transitions, 3874 flow [2024-06-28 02:27:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 02:27:14,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 02:27:14,173 INFO L175 Difference]: Start difference. First operand has 381 places, 283 transitions, 3178 flow. Second operand 10 states and 106 transitions. [2024-06-28 02:27:14,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 298 transitions, 3874 flow [2024-06-28 02:27:14,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 298 transitions, 3710 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 02:27:14,804 INFO L231 Difference]: Finished difference. Result has 384 places, 284 transitions, 3194 flow [2024-06-28 02:27:14,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3194, PETRI_PLACES=384, PETRI_TRANSITIONS=284} [2024-06-28 02:27:14,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 02:27:14,805 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 284 transitions, 3194 flow [2024-06-28 02:27:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:14,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:14,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:14,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 02:27:14,805 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:14,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1010730784, now seen corresponding path program 12 times [2024-06-28 02:27:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:14,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313259336] [2024-06-28 02:27:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:14,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:15,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:15,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313259336] [2024-06-28 02:27:15,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313259336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:15,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:15,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:15,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466084799] [2024-06-28 02:27:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:15,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:15,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:15,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:15,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 284 transitions, 3194 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:15,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:15,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:15,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:16,276 INFO L124 PetriNetUnfolderBase]: 821/1572 cut-off events. [2024-06-28 02:27:16,276 INFO L125 PetriNetUnfolderBase]: For 185014/185014 co-relation queries the response was YES. [2024-06-28 02:27:16,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9977 conditions, 1572 events. 821/1572 cut-off events. For 185014/185014 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9308 event pairs, 326 based on Foata normal form. 12/1583 useless extension candidates. Maximal degree in co-relation 9814. Up to 1465 conditions per place. [2024-06-28 02:27:16,292 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 22 changer transitions 5/301 dead transitions. [2024-06-28 02:27:16,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 301 transitions, 3946 flow [2024-06-28 02:27:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:27:16,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:27:16,293 INFO L175 Difference]: Start difference. First operand has 384 places, 284 transitions, 3194 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:27:16,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 301 transitions, 3946 flow [2024-06-28 02:27:16,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 301 transitions, 3776 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:16,979 INFO L231 Difference]: Finished difference. Result has 386 places, 284 transitions, 3132 flow [2024-06-28 02:27:16,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3132, PETRI_PLACES=386, PETRI_TRANSITIONS=284} [2024-06-28 02:27:16,980 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 02:27:16,980 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 284 transitions, 3132 flow [2024-06-28 02:27:16,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:16,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:16,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:16,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 02:27:16,980 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:16,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:16,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1009079548, now seen corresponding path program 13 times [2024-06-28 02:27:16,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:16,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784614067] [2024-06-28 02:27:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:16,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:17,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:17,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784614067] [2024-06-28 02:27:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784614067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:17,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:17,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42016150] [2024-06-28 02:27:17,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:17,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:17,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:17,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:17,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:18,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:18,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 284 transitions, 3132 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:18,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:18,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:18,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:18,504 INFO L124 PetriNetUnfolderBase]: 821/1580 cut-off events. [2024-06-28 02:27:18,504 INFO L125 PetriNetUnfolderBase]: For 166786/166786 co-relation queries the response was YES. [2024-06-28 02:27:18,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 1580 events. 821/1580 cut-off events. For 166786/166786 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9395 event pairs, 324 based on Foata normal form. 8/1587 useless extension candidates. Maximal degree in co-relation 9641. Up to 1455 conditions per place. [2024-06-28 02:27:18,523 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 271 selfloop transitions, 19 changer transitions 10/302 dead transitions. [2024-06-28 02:27:18,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 302 transitions, 3826 flow [2024-06-28 02:27:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:27:18,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:27:18,524 INFO L175 Difference]: Start difference. First operand has 386 places, 284 transitions, 3132 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:27:18,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 302 transitions, 3826 flow [2024-06-28 02:27:19,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 302 transitions, 3722 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:19,267 INFO L231 Difference]: Finished difference. Result has 388 places, 281 transitions, 3043 flow [2024-06-28 02:27:19,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3043, PETRI_PLACES=388, PETRI_TRANSITIONS=281} [2024-06-28 02:27:19,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 02:27:19,268 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 281 transitions, 3043 flow [2024-06-28 02:27:19,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:19,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:19,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:19,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 02:27:19,268 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 446942234, now seen corresponding path program 35 times [2024-06-28 02:27:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094768442] [2024-06-28 02:27:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:20,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:20,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094768442] [2024-06-28 02:27:20,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094768442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:20,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:20,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:20,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74732782] [2024-06-28 02:27:20,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:20,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:20,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:20,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:20,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:20,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 281 transitions, 3043 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:20,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:20,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:20,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:20,827 INFO L124 PetriNetUnfolderBase]: 794/1519 cut-off events. [2024-06-28 02:27:20,827 INFO L125 PetriNetUnfolderBase]: For 140693/140693 co-relation queries the response was YES. [2024-06-28 02:27:20,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9568 conditions, 1519 events. 794/1519 cut-off events. For 140693/140693 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8943 event pairs, 316 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 9403. Up to 1412 conditions per place. [2024-06-28 02:27:20,846 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 260 selfloop transitions, 34 changer transitions 0/296 dead transitions. [2024-06-28 02:27:20,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 296 transitions, 3743 flow [2024-06-28 02:27:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:27:20,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:27:20,847 INFO L175 Difference]: Start difference. First operand has 388 places, 281 transitions, 3043 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:27:20,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 296 transitions, 3743 flow [2024-06-28 02:27:21,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 296 transitions, 3701 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:21,470 INFO L231 Difference]: Finished difference. Result has 386 places, 282 transitions, 3141 flow [2024-06-28 02:27:21,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3141, PETRI_PLACES=386, PETRI_TRANSITIONS=282} [2024-06-28 02:27:21,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 02:27:21,470 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 282 transitions, 3141 flow [2024-06-28 02:27:21,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:21,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:21,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:21,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 02:27:21,471 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:21,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1649038316, now seen corresponding path program 36 times [2024-06-28 02:27:21,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:21,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766511447] [2024-06-28 02:27:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:21,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:22,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:22,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766511447] [2024-06-28 02:27:22,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766511447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:22,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:22,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:22,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001778397] [2024-06-28 02:27:22,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:22,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:22,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:22,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:22,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:22,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:22,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 282 transitions, 3141 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:22,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:22,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:22,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:23,020 INFO L124 PetriNetUnfolderBase]: 798/1527 cut-off events. [2024-06-28 02:27:23,021 INFO L125 PetriNetUnfolderBase]: For 142984/142984 co-relation queries the response was YES. [2024-06-28 02:27:23,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9763 conditions, 1527 events. 798/1527 cut-off events. For 142984/142984 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9020 event pairs, 187 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 9599. Up to 1321 conditions per place. [2024-06-28 02:27:23,038 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 242 selfloop transitions, 53 changer transitions 0/297 dead transitions. [2024-06-28 02:27:23,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 297 transitions, 3837 flow [2024-06-28 02:27:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 02:27:23,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 02:27:23,039 INFO L175 Difference]: Start difference. First operand has 386 places, 282 transitions, 3141 flow. Second operand 10 states and 103 transitions. [2024-06-28 02:27:23,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 297 transitions, 3837 flow [2024-06-28 02:27:23,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 297 transitions, 3707 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:23,691 INFO L231 Difference]: Finished difference. Result has 388 places, 283 transitions, 3191 flow [2024-06-28 02:27:23,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3191, PETRI_PLACES=388, PETRI_TRANSITIONS=283} [2024-06-28 02:27:23,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 02:27:23,691 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 283 transitions, 3191 flow [2024-06-28 02:27:23,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:23,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:23,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 02:27:23,691 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:23,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1654760172, now seen corresponding path program 14 times [2024-06-28 02:27:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:23,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823879634] [2024-06-28 02:27:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:25,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:25,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823879634] [2024-06-28 02:27:25,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823879634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:25,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:25,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217028359] [2024-06-28 02:27:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:25,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:25,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:25,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:25,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:25,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:25,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 283 transitions, 3191 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:25,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:25,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:25,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:26,240 INFO L124 PetriNetUnfolderBase]: 814/1563 cut-off events. [2024-06-28 02:27:26,240 INFO L125 PetriNetUnfolderBase]: For 184241/184241 co-relation queries the response was YES. [2024-06-28 02:27:26,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9895 conditions, 1563 events. 814/1563 cut-off events. For 184241/184241 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9279 event pairs, 193 based on Foata normal form. 10/1569 useless extension candidates. Maximal degree in co-relation 9730. Up to 1307 conditions per place. [2024-06-28 02:27:26,258 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 54 changer transitions 9/303 dead transitions. [2024-06-28 02:27:26,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 303 transitions, 3903 flow [2024-06-28 02:27:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:27:26,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:27:26,259 INFO L175 Difference]: Start difference. First operand has 388 places, 283 transitions, 3191 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:27:26,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 303 transitions, 3903 flow [2024-06-28 02:27:26,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 303 transitions, 3733 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:26,997 INFO L231 Difference]: Finished difference. Result has 391 places, 280 transitions, 3111 flow [2024-06-28 02:27:26,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3111, PETRI_PLACES=391, PETRI_TRANSITIONS=280} [2024-06-28 02:27:26,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 02:27:26,997 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 280 transitions, 3111 flow [2024-06-28 02:27:26,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:26,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:26,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:26,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 02:27:26,997 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:26,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1831205186, now seen corresponding path program 37 times [2024-06-28 02:27:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923562650] [2024-06-28 02:27:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923562650] [2024-06-28 02:27:28,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923562650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:28,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484329792] [2024-06-28 02:27:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:28,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:28,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 280 transitions, 3111 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:28,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:28,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:28,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:28,752 INFO L124 PetriNetUnfolderBase]: 792/1521 cut-off events. [2024-06-28 02:27:28,753 INFO L125 PetriNetUnfolderBase]: For 146802/146802 co-relation queries the response was YES. [2024-06-28 02:27:28,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9718 conditions, 1521 events. 792/1521 cut-off events. For 146802/146802 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9022 event pairs, 185 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 9552. Up to 1289 conditions per place. [2024-06-28 02:27:28,771 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 233 selfloop transitions, 61 changer transitions 0/296 dead transitions. [2024-06-28 02:27:28,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 296 transitions, 3821 flow [2024-06-28 02:27:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:27:28,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:27:28,772 INFO L175 Difference]: Start difference. First operand has 391 places, 280 transitions, 3111 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:27:28,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 296 transitions, 3821 flow [2024-06-28 02:27:29,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 296 transitions, 3698 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-28 02:27:29,457 INFO L231 Difference]: Finished difference. Result has 387 places, 281 transitions, 3186 flow [2024-06-28 02:27:29,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3186, PETRI_PLACES=387, PETRI_TRANSITIONS=281} [2024-06-28 02:27:29,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 02:27:29,458 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 281 transitions, 3186 flow [2024-06-28 02:27:29,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:29,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:29,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:29,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 02:27:29,458 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:29,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1011057214, now seen corresponding path program 15 times [2024-06-28 02:27:29,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:29,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425292279] [2024-06-28 02:27:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425292279] [2024-06-28 02:27:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425292279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:30,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:30,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:30,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625678726] [2024-06-28 02:27:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:30,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:30,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:30,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 281 transitions, 3186 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:30,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:30,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:30,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:30,902 INFO L124 PetriNetUnfolderBase]: 833/1608 cut-off events. [2024-06-28 02:27:30,903 INFO L125 PetriNetUnfolderBase]: For 228995/228995 co-relation queries the response was YES. [2024-06-28 02:27:30,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11156 conditions, 1608 events. 833/1608 cut-off events. For 228995/228995 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9579 event pairs, 333 based on Foata normal form. 8/1615 useless extension candidates. Maximal degree in co-relation 10990. Up to 1427 conditions per place. [2024-06-28 02:27:30,922 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 275 selfloop transitions, 14 changer transitions 11/302 dead transitions. [2024-06-28 02:27:30,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 302 transitions, 4128 flow [2024-06-28 02:27:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:27:30,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:27:30,923 INFO L175 Difference]: Start difference. First operand has 387 places, 281 transitions, 3186 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:27:30,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 302 transitions, 4128 flow [2024-06-28 02:27:31,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 302 transitions, 3940 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:31,879 INFO L231 Difference]: Finished difference. Result has 389 places, 277 transitions, 3001 flow [2024-06-28 02:27:31,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3001, PETRI_PLACES=389, PETRI_TRANSITIONS=277} [2024-06-28 02:27:31,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 02:27:31,879 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 277 transitions, 3001 flow [2024-06-28 02:27:31,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:31,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:31,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:31,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 02:27:31,880 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:31,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1831210766, now seen corresponding path program 38 times [2024-06-28 02:27:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:31,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154743110] [2024-06-28 02:27:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:32,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:32,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154743110] [2024-06-28 02:27:32,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154743110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:32,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:32,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:32,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366244472] [2024-06-28 02:27:32,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:32,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:32,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:32,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:33,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:33,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 277 transitions, 3001 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:33,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:33,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:33,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:33,509 INFO L124 PetriNetUnfolderBase]: 814/1567 cut-off events. [2024-06-28 02:27:33,509 INFO L125 PetriNetUnfolderBase]: For 201981/201981 co-relation queries the response was YES. [2024-06-28 02:27:33,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10878 conditions, 1567 events. 814/1567 cut-off events. For 201981/201981 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9272 event pairs, 204 based on Foata normal form. 2/1565 useless extension candidates. Maximal degree in co-relation 10711. Up to 1352 conditions per place. [2024-06-28 02:27:33,528 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 234 selfloop transitions, 57 changer transitions 0/293 dead transitions. [2024-06-28 02:27:33,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 293 transitions, 3703 flow [2024-06-28 02:27:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:27:33,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:27:33,529 INFO L175 Difference]: Start difference. First operand has 389 places, 277 transitions, 3001 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:27:33,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 293 transitions, 3703 flow [2024-06-28 02:27:34,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 293 transitions, 3673 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:34,432 INFO L231 Difference]: Finished difference. Result has 385 places, 278 transitions, 3163 flow [2024-06-28 02:27:34,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3163, PETRI_PLACES=385, PETRI_TRANSITIONS=278} [2024-06-28 02:27:34,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 02:27:34,433 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 278 transitions, 3163 flow [2024-06-28 02:27:34,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:34,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:34,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:34,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 02:27:34,434 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:34,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1848699582, now seen corresponding path program 16 times [2024-06-28 02:27:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872775423] [2024-06-28 02:27:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:34,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:35,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:35,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872775423] [2024-06-28 02:27:35,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872775423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:35,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:35,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:35,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28221138] [2024-06-28 02:27:35,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:35,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:35,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:35,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:35,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 278 transitions, 3163 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:35,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:35,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:35,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:36,575 INFO L124 PetriNetUnfolderBase]: 830/1603 cut-off events. [2024-06-28 02:27:36,575 INFO L125 PetriNetUnfolderBase]: For 235409/235409 co-relation queries the response was YES. [2024-06-28 02:27:36,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11117 conditions, 1603 events. 830/1603 cut-off events. For 235409/235409 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9528 event pairs, 208 based on Foata normal form. 10/1609 useless extension candidates. Maximal degree in co-relation 10952. Up to 1344 conditions per place. [2024-06-28 02:27:36,595 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 56 changer transitions 11/299 dead transitions. [2024-06-28 02:27:36,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 299 transitions, 3873 flow [2024-06-28 02:27:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:27:36,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:27:36,596 INFO L175 Difference]: Start difference. First operand has 385 places, 278 transitions, 3163 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:27:36,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 299 transitions, 3873 flow [2024-06-28 02:27:37,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 299 transitions, 3691 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:37,537 INFO L231 Difference]: Finished difference. Result has 388 places, 275 transitions, 3076 flow [2024-06-28 02:27:37,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2981, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3076, PETRI_PLACES=388, PETRI_TRANSITIONS=275} [2024-06-28 02:27:37,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 02:27:37,538 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 275 transitions, 3076 flow [2024-06-28 02:27:37,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:37,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:37,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:37,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 02:27:37,538 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:37,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:37,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1855841486, now seen corresponding path program 39 times [2024-06-28 02:27:37,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:37,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404474598] [2024-06-28 02:27:37,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:37,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404474598] [2024-06-28 02:27:38,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404474598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:38,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:38,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358226910] [2024-06-28 02:27:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:38,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:38,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:38,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 275 transitions, 3076 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:38,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:38,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:38,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:39,272 INFO L124 PetriNetUnfolderBase]: 808/1561 cut-off events. [2024-06-28 02:27:39,272 INFO L125 PetriNetUnfolderBase]: For 199082/199082 co-relation queries the response was YES. [2024-06-28 02:27:39,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10940 conditions, 1561 events. 808/1561 cut-off events. For 199082/199082 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9272 event pairs, 202 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 10774. Up to 1329 conditions per place. [2024-06-28 02:27:39,291 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 228 selfloop transitions, 61 changer transitions 0/291 dead transitions. [2024-06-28 02:27:39,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 291 transitions, 3780 flow [2024-06-28 02:27:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:27:39,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 02:27:39,292 INFO L175 Difference]: Start difference. First operand has 388 places, 275 transitions, 3076 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:27:39,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 291 transitions, 3780 flow [2024-06-28 02:27:40,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 291 transitions, 3664 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:40,127 INFO L231 Difference]: Finished difference. Result has 385 places, 276 transitions, 3162 flow [2024-06-28 02:27:40,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3162, PETRI_PLACES=385, PETRI_TRANSITIONS=276} [2024-06-28 02:27:40,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 02:27:40,127 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 276 transitions, 3162 flow [2024-06-28 02:27:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:40,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:40,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:40,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 02:27:40,127 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:40,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash 386521210, now seen corresponding path program 17 times [2024-06-28 02:27:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:40,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230545934] [2024-06-28 02:27:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:40,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:41,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:41,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230545934] [2024-06-28 02:27:41,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230545934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:41,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:41,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:41,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511910605] [2024-06-28 02:27:41,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:41,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:41,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:41,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:41,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 276 transitions, 3162 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:41,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:41,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:41,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:41,654 INFO L124 PetriNetUnfolderBase]: 817/1584 cut-off events. [2024-06-28 02:27:41,654 INFO L125 PetriNetUnfolderBase]: For 225454/225454 co-relation queries the response was YES. [2024-06-28 02:27:41,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10843 conditions, 1584 events. 817/1584 cut-off events. For 225454/225454 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9440 event pairs, 340 based on Foata normal form. 10/1593 useless extension candidates. Maximal degree in co-relation 10678. Up to 1485 conditions per place. [2024-06-28 02:27:41,673 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 262 selfloop transitions, 13 changer transitions 17/294 dead transitions. [2024-06-28 02:27:41,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 294 transitions, 3840 flow [2024-06-28 02:27:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:27:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:27:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:27:41,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 02:27:41,674 INFO L175 Difference]: Start difference. First operand has 385 places, 276 transitions, 3162 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:27:41,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 294 transitions, 3840 flow [2024-06-28 02:27:42,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 294 transitions, 3648 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 02:27:42,528 INFO L231 Difference]: Finished difference. Result has 389 places, 269 transitions, 2946 flow [2024-06-28 02:27:42,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2946, PETRI_PLACES=389, PETRI_TRANSITIONS=269} [2024-06-28 02:27:42,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 02:27:42,528 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 269 transitions, 2946 flow [2024-06-28 02:27:42,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:42,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:42,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:42,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 02:27:42,529 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:42,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:42,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1855849422, now seen corresponding path program 18 times [2024-06-28 02:27:42,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:42,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229342159] [2024-06-28 02:27:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:44,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229342159] [2024-06-28 02:27:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229342159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:44,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:44,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098956295] [2024-06-28 02:27:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:44,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:44,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:44,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:44,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 269 transitions, 2946 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:44,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:44,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:44,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:44,912 INFO L124 PetriNetUnfolderBase]: 803/1562 cut-off events. [2024-06-28 02:27:44,912 INFO L125 PetriNetUnfolderBase]: For 226569/226569 co-relation queries the response was YES. [2024-06-28 02:27:44,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 1562 events. 803/1562 cut-off events. For 226569/226569 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9297 event pairs, 205 based on Foata normal form. 10/1568 useless extension candidates. Maximal degree in co-relation 10339. Up to 1286 conditions per place. [2024-06-28 02:27:44,931 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 59 changer transitions 11/292 dead transitions. [2024-06-28 02:27:44,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 292 transitions, 3654 flow [2024-06-28 02:27:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:27:44,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:27:44,932 INFO L175 Difference]: Start difference. First operand has 389 places, 269 transitions, 2946 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:27:44,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 292 transitions, 3654 flow [2024-06-28 02:27:45,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 292 transitions, 3612 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:45,799 INFO L231 Difference]: Finished difference. Result has 383 places, 268 transitions, 3023 flow [2024-06-28 02:27:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3023, PETRI_PLACES=383, PETRI_TRANSITIONS=268} [2024-06-28 02:27:45,799 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 02:27:45,799 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 268 transitions, 3023 flow [2024-06-28 02:27:45,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:45,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:45,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 02:27:45,800 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1588744316, now seen corresponding path program 19 times [2024-06-28 02:27:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410538452] [2024-06-28 02:27:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410538452] [2024-06-28 02:27:46,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410538452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:46,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263643380] [2024-06-28 02:27:46,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:46,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:47,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:47,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 268 transitions, 3023 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:47,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:47,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:47,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:47,461 INFO L124 PetriNetUnfolderBase]: 767/1494 cut-off events. [2024-06-28 02:27:47,461 INFO L125 PetriNetUnfolderBase]: For 165286/165286 co-relation queries the response was YES. [2024-06-28 02:27:47,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9410 conditions, 1494 events. 767/1494 cut-off events. For 165286/165286 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8870 event pairs, 316 based on Foata normal form. 8/1501 useless extension candidates. Maximal degree in co-relation 9246. Up to 1425 conditions per place. [2024-06-28 02:27:47,479 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 257 selfloop transitions, 9 changer transitions 14/282 dead transitions. [2024-06-28 02:27:47,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 282 transitions, 3651 flow [2024-06-28 02:27:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 02:27:47,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-28 02:27:47,480 INFO L175 Difference]: Start difference. First operand has 383 places, 268 transitions, 3023 flow. Second operand 10 states and 96 transitions. [2024-06-28 02:27:47,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 282 transitions, 3651 flow [2024-06-28 02:27:48,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 282 transitions, 3527 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:27:48,198 INFO L231 Difference]: Finished difference. Result has 381 places, 263 transitions, 2880 flow [2024-06-28 02:27:48,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2880, PETRI_PLACES=381, PETRI_TRANSITIONS=263} [2024-06-28 02:27:48,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 02:27:48,199 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 263 transitions, 2880 flow [2024-06-28 02:27:48,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:48,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:48,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 02:27:48,199 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:48,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1856108892, now seen corresponding path program 20 times [2024-06-28 02:27:48,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:48,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499457795] [2024-06-28 02:27:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:49,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:49,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499457795] [2024-06-28 02:27:49,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499457795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:49,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:49,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549876392] [2024-06-28 02:27:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:49,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:49,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:49,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 263 transitions, 2880 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:49,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:49,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:49,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:49,704 INFO L124 PetriNetUnfolderBase]: 762/1483 cut-off events. [2024-06-28 02:27:49,704 INFO L125 PetriNetUnfolderBase]: For 176823/176823 co-relation queries the response was YES. [2024-06-28 02:27:49,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9228 conditions, 1483 events. 762/1483 cut-off events. For 176823/176823 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8773 event pairs, 191 based on Foata normal form. 10/1489 useless extension candidates. Maximal degree in co-relation 9065. Up to 1196 conditions per place. [2024-06-28 02:27:49,722 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 209 selfloop transitions, 57 changer transitions 14/282 dead transitions. [2024-06-28 02:27:49,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 282 transitions, 3546 flow [2024-06-28 02:27:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:27:49,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 02:27:49,723 INFO L175 Difference]: Start difference. First operand has 381 places, 263 transitions, 2880 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:27:49,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 282 transitions, 3546 flow [2024-06-28 02:27:50,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 282 transitions, 3504 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 02:27:50,333 INFO L231 Difference]: Finished difference. Result has 371 places, 257 transitions, 2917 flow [2024-06-28 02:27:50,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2917, PETRI_PLACES=371, PETRI_TRANSITIONS=257} [2024-06-28 02:27:50,334 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-28 02:27:50,334 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 257 transitions, 2917 flow [2024-06-28 02:27:50,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:50,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:50,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 02:27:50,334 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:50,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1823576830, now seen corresponding path program 21 times [2024-06-28 02:27:50,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:50,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631007830] [2024-06-28 02:27:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:50,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:52,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:52,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631007830] [2024-06-28 02:27:52,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631007830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:52,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:52,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:52,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337922596] [2024-06-28 02:27:52,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:52,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:52,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:52,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:52,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 257 transitions, 2917 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:52,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:52,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:52,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:52,811 INFO L124 PetriNetUnfolderBase]: 742/1447 cut-off events. [2024-06-28 02:27:52,812 INFO L125 PetriNetUnfolderBase]: For 152381/152381 co-relation queries the response was YES. [2024-06-28 02:27:52,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9075 conditions, 1447 events. 742/1447 cut-off events. For 152381/152381 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8522 event pairs, 183 based on Foata normal form. 8/1451 useless extension candidates. Maximal degree in co-relation 8917. Up to 1174 conditions per place. [2024-06-28 02:27:52,829 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 207 selfloop transitions, 57 changer transitions 11/277 dead transitions. [2024-06-28 02:27:52,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 277 transitions, 3563 flow [2024-06-28 02:27:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:27:52,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:27:52,830 INFO L175 Difference]: Start difference. First operand has 371 places, 257 transitions, 2917 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:27:52,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 277 transitions, 3563 flow [2024-06-28 02:27:53,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 277 transitions, 3439 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:27:53,498 INFO L231 Difference]: Finished difference. Result has 366 places, 253 transitions, 2884 flow [2024-06-28 02:27:53,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2884, PETRI_PLACES=366, PETRI_TRANSITIONS=253} [2024-06-28 02:27:53,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 02:27:53,498 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 253 transitions, 2884 flow [2024-06-28 02:27:53,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:53,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:53,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 02:27:53,499 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:53,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:53,499 INFO L85 PathProgramCache]: Analyzing trace with hash 446950170, now seen corresponding path program 22 times [2024-06-28 02:27:53,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:53,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220028300] [2024-06-28 02:27:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:53,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:54,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:54,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220028300] [2024-06-28 02:27:54,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220028300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:54,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:54,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106088504] [2024-06-28 02:27:54,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:54,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:54,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:54,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:54,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:55,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:55,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 253 transitions, 2884 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:55,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:55,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:55,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:55,577 INFO L124 PetriNetUnfolderBase]: 738/1439 cut-off events. [2024-06-28 02:27:55,577 INFO L125 PetriNetUnfolderBase]: For 151874/151874 co-relation queries the response was YES. [2024-06-28 02:27:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 1439 events. 738/1439 cut-off events. For 151874/151874 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8461 event pairs, 187 based on Foata normal form. 10/1445 useless extension candidates. Maximal degree in co-relation 8815. Up to 955 conditions per place. [2024-06-28 02:27:55,594 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 94 changer transitions 10/272 dead transitions. [2024-06-28 02:27:55,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 272 transitions, 3528 flow [2024-06-28 02:27:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:27:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:27:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:27:55,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 02:27:55,595 INFO L175 Difference]: Start difference. First operand has 366 places, 253 transitions, 2884 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:27:55,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 272 transitions, 3528 flow [2024-06-28 02:27:56,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 272 transitions, 3404 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:56,199 INFO L231 Difference]: Finished difference. Result has 359 places, 247 transitions, 2909 flow [2024-06-28 02:27:56,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2909, PETRI_PLACES=359, PETRI_TRANSITIONS=247} [2024-06-28 02:27:56,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-28 02:27:56,199 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 247 transitions, 2909 flow [2024-06-28 02:27:56,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:56,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:56,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:56,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 02:27:56,200 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:56,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash 447218940, now seen corresponding path program 23 times [2024-06-28 02:27:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579283947] [2024-06-28 02:27:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:57,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:57,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579283947] [2024-06-28 02:27:57,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579283947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:57,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:57,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:27:57,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804365225] [2024-06-28 02:27:57,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:57,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:27:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:57,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:27:57,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:27:57,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:57,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 247 transitions, 2909 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:57,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:57,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:57,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:58,003 INFO L124 PetriNetUnfolderBase]: 745/1464 cut-off events. [2024-06-28 02:27:58,003 INFO L125 PetriNetUnfolderBase]: For 177521/177521 co-relation queries the response was YES. [2024-06-28 02:27:58,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 1464 events. 745/1464 cut-off events. For 177521/177521 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8661 event pairs, 327 based on Foata normal form. 8/1471 useless extension candidates. Maximal degree in co-relation 9995. Up to 1277 conditions per place. [2024-06-28 02:27:58,020 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 244 selfloop transitions, 17 changer transitions 8/271 dead transitions. [2024-06-28 02:27:58,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 271 transitions, 3833 flow [2024-06-28 02:27:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:27:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:27:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:27:58,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 02:27:58,021 INFO L175 Difference]: Start difference. First operand has 359 places, 247 transitions, 2909 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:27:58,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 271 transitions, 3833 flow [2024-06-28 02:27:58,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 271 transitions, 3628 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:27:58,676 INFO L231 Difference]: Finished difference. Result has 356 places, 244 transitions, 2723 flow [2024-06-28 02:27:58,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2723, PETRI_PLACES=356, PETRI_TRANSITIONS=244} [2024-06-28 02:27:58,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 02:27:58,677 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 244 transitions, 2723 flow [2024-06-28 02:27:58,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:58,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:58,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:27:58,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 02:27:58,677 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:27:58,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash 439590584, now seen corresponding path program 40 times [2024-06-28 02:27:58,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:58,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791531401] [2024-06-28 02:27:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:58,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:59,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:59,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791531401] [2024-06-28 02:27:59,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791531401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:59,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:59,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:27:59,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771674823] [2024-06-28 02:27:59,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:59,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:27:59,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:27:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:27:59,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:27:59,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 244 transitions, 2723 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:27:59,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:59,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:27:59,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:00,138 INFO L124 PetriNetUnfolderBase]: 723/1418 cut-off events. [2024-06-28 02:28:00,139 INFO L125 PetriNetUnfolderBase]: For 142693/142693 co-relation queries the response was YES. [2024-06-28 02:28:00,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9489 conditions, 1418 events. 723/1418 cut-off events. For 142693/142693 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8309 event pairs, 195 based on Foata normal form. 2/1416 useless extension candidates. Maximal degree in co-relation 9338. Up to 999 conditions per place. [2024-06-28 02:28:00,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 94 changer transitions 0/259 dead transitions. [2024-06-28 02:28:00,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 259 transitions, 3347 flow [2024-06-28 02:28:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:28:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:28:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:28:00,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:28:00,156 INFO L175 Difference]: Start difference. First operand has 356 places, 244 transitions, 2723 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:28:00,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 259 transitions, 3347 flow [2024-06-28 02:28:00,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 259 transitions, 3309 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:00,791 INFO L231 Difference]: Finished difference. Result has 352 places, 245 transitions, 2943 flow [2024-06-28 02:28:00,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2943, PETRI_PLACES=352, PETRI_TRANSITIONS=245} [2024-06-28 02:28:00,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 02:28:00,792 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 245 transitions, 2943 flow [2024-06-28 02:28:00,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:00,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:00,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:00,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 02:28:00,792 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:00,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash -330677652, now seen corresponding path program 24 times [2024-06-28 02:28:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419123579] [2024-06-28 02:28:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:01,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419123579] [2024-06-28 02:28:01,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419123579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:01,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:01,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:28:01,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111800508] [2024-06-28 02:28:01,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:01,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:28:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:28:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:28:02,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:02,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 245 transitions, 2943 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:02,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:02,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:02,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:02,583 INFO L124 PetriNetUnfolderBase]: 725/1428 cut-off events. [2024-06-28 02:28:02,583 INFO L125 PetriNetUnfolderBase]: For 150862/150862 co-relation queries the response was YES. [2024-06-28 02:28:02,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1428 events. 725/1428 cut-off events. For 150862/150862 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8392 event pairs, 328 based on Foata normal form. 10/1437 useless extension candidates. Maximal degree in co-relation 9123. Up to 1320 conditions per place. [2024-06-28 02:28:02,595 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 233 selfloop transitions, 13 changer transitions 16/264 dead transitions. [2024-06-28 02:28:02,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 264 transitions, 3567 flow [2024-06-28 02:28:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 02:28:02,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 02:28:02,596 INFO L175 Difference]: Start difference. First operand has 352 places, 245 transitions, 2943 flow. Second operand 11 states and 112 transitions. [2024-06-28 02:28:02,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 264 transitions, 3567 flow [2024-06-28 02:28:03,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 264 transitions, 3319 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 02:28:03,173 INFO L231 Difference]: Finished difference. Result has 355 places, 239 transitions, 2682 flow [2024-06-28 02:28:03,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2682, PETRI_PLACES=355, PETRI_TRANSITIONS=239} [2024-06-28 02:28:03,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:28:03,174 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 239 transitions, 2682 flow [2024-06-28 02:28:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:03,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:03,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:03,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 02:28:03,174 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:03,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash 439585004, now seen corresponding path program 41 times [2024-06-28 02:28:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:03,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130856155] [2024-06-28 02:28:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:04,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130856155] [2024-06-28 02:28:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130856155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:04,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:04,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:28:04,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626901653] [2024-06-28 02:28:04,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:04,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:28:04,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:28:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:28:04,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:04,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 239 transitions, 2682 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:04,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:04,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:04,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:04,746 INFO L124 PetriNetUnfolderBase]: 686/1355 cut-off events. [2024-06-28 02:28:04,746 INFO L125 PetriNetUnfolderBase]: For 113945/113945 co-relation queries the response was YES. [2024-06-28 02:28:04,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8440 conditions, 1355 events. 686/1355 cut-off events. For 113945/113945 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7931 event pairs, 190 based on Foata normal form. 2/1353 useless extension candidates. Maximal degree in co-relation 8290. Up to 944 conditions per place. [2024-06-28 02:28:04,760 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 90 changer transitions 0/252 dead transitions. [2024-06-28 02:28:04,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 252 transitions, 3218 flow [2024-06-28 02:28:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:28:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:28:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 02:28:04,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 02:28:04,760 INFO L175 Difference]: Start difference. First operand has 355 places, 239 transitions, 2682 flow. Second operand 10 states and 104 transitions. [2024-06-28 02:28:04,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 252 transitions, 3218 flow [2024-06-28 02:28:05,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 252 transitions, 3178 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:28:05,339 INFO L231 Difference]: Finished difference. Result has 347 places, 239 transitions, 2826 flow [2024-06-28 02:28:05,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=347, PETRI_TRANSITIONS=239} [2024-06-28 02:28:05,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-28 02:28:05,339 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 239 transitions, 2826 flow [2024-06-28 02:28:05,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:05,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:05,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:05,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 02:28:05,340 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:05,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1780101011, now seen corresponding path program 1 times [2024-06-28 02:28:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:05,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416834414] [2024-06-28 02:28:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:05,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:07,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416834414] [2024-06-28 02:28:07,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416834414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:07,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:07,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360300582] [2024-06-28 02:28:07,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:07,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:07,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:07,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 239 transitions, 2826 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:07,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:07,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:07,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:08,284 INFO L124 PetriNetUnfolderBase]: 694/1375 cut-off events. [2024-06-28 02:28:08,285 INFO L125 PetriNetUnfolderBase]: For 121561/121561 co-relation queries the response was YES. [2024-06-28 02:28:08,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8591 conditions, 1375 events. 694/1375 cut-off events. For 121561/121561 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8079 event pairs, 187 based on Foata normal form. 6/1380 useless extension candidates. Maximal degree in co-relation 8445. Up to 1168 conditions per place. [2024-06-28 02:28:08,300 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 26 changer transitions 21/262 dead transitions. [2024-06-28 02:28:08,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 262 transitions, 3406 flow [2024-06-28 02:28:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:28:08,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 02:28:08,301 INFO L175 Difference]: Start difference. First operand has 347 places, 239 transitions, 2826 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:28:08,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 262 transitions, 3406 flow [2024-06-28 02:28:08,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 262 transitions, 3091 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:28:08,840 INFO L231 Difference]: Finished difference. Result has 350 places, 231 transitions, 2472 flow [2024-06-28 02:28:08,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2472, PETRI_PLACES=350, PETRI_TRANSITIONS=231} [2024-06-28 02:28:08,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 02:28:08,840 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 231 transitions, 2472 flow [2024-06-28 02:28:08,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:08,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:08,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:08,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 02:28:08,840 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:08,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1972402441, now seen corresponding path program 2 times [2024-06-28 02:28:08,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:08,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962776540] [2024-06-28 02:28:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:08,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:10,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:10,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962776540] [2024-06-28 02:28:10,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962776540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:10,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:10,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:10,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752011925] [2024-06-28 02:28:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:10,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:10,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:10,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:10,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:10,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 231 transitions, 2472 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:10,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:10,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:10,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:10,808 INFO L124 PetriNetUnfolderBase]: 679/1354 cut-off events. [2024-06-28 02:28:10,808 INFO L125 PetriNetUnfolderBase]: For 121993/121993 co-relation queries the response was YES. [2024-06-28 02:28:10,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8065 conditions, 1354 events. 679/1354 cut-off events. For 121993/121993 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7972 event pairs, 193 based on Foata normal form. 6/1358 useless extension candidates. Maximal degree in co-relation 7918. Up to 1190 conditions per place. [2024-06-28 02:28:10,822 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 30 changer transitions 15/254 dead transitions. [2024-06-28 02:28:10,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 254 transitions, 3054 flow [2024-06-28 02:28:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:28:10,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:28:10,823 INFO L175 Difference]: Start difference. First operand has 350 places, 231 transitions, 2472 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:28:10,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 254 transitions, 3054 flow [2024-06-28 02:28:11,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 254 transitions, 2919 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 02:28:11,322 INFO L231 Difference]: Finished difference. Result has 340 places, 230 transitions, 2390 flow [2024-06-28 02:28:11,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2390, PETRI_PLACES=340, PETRI_TRANSITIONS=230} [2024-06-28 02:28:11,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 02:28:11,322 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 230 transitions, 2390 flow [2024-06-28 02:28:11,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:11,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:11,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:11,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 02:28:11,322 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:11,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1162194317, now seen corresponding path program 3 times [2024-06-28 02:28:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:11,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38571562] [2024-06-28 02:28:11,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38571562] [2024-06-28 02:28:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38571562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:12,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:12,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095817084] [2024-06-28 02:28:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:12,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:12,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:12,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:12,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 230 transitions, 2390 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:12,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:12,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:12,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:13,285 INFO L124 PetriNetUnfolderBase]: 661/1320 cut-off events. [2024-06-28 02:28:13,286 INFO L125 PetriNetUnfolderBase]: For 115940/115940 co-relation queries the response was YES. [2024-06-28 02:28:13,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 1320 events. 661/1320 cut-off events. For 115940/115940 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7730 event pairs, 185 based on Foata normal form. 6/1325 useless extension candidates. Maximal degree in co-relation 7614. Up to 1132 conditions per place. [2024-06-28 02:28:13,298 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 193 selfloop transitions, 45 changer transitions 10/250 dead transitions. [2024-06-28 02:28:13,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 250 transitions, 2946 flow [2024-06-28 02:28:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 02:28:13,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 02:28:13,299 INFO L175 Difference]: Start difference. First operand has 340 places, 230 transitions, 2390 flow. Second operand 12 states and 129 transitions. [2024-06-28 02:28:13,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 250 transitions, 2946 flow [2024-06-28 02:28:13,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 250 transitions, 2878 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:13,800 INFO L231 Difference]: Finished difference. Result has 338 places, 226 transitions, 2363 flow [2024-06-28 02:28:13,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2363, PETRI_PLACES=338, PETRI_TRANSITIONS=226} [2024-06-28 02:28:13,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-28 02:28:13,800 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 226 transitions, 2363 flow [2024-06-28 02:28:13,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:13,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:13,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:13,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 02:28:13,803 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:13,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2017352867, now seen corresponding path program 4 times [2024-06-28 02:28:13,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:13,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009980584] [2024-06-28 02:28:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:13,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:15,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009980584] [2024-06-28 02:28:15,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009980584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:15,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:15,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:15,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359590633] [2024-06-28 02:28:15,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:15,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:15,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:15,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:15,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:15,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 226 transitions, 2363 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:15,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:15,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:15,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:16,255 INFO L124 PetriNetUnfolderBase]: 649/1300 cut-off events. [2024-06-28 02:28:16,255 INFO L125 PetriNetUnfolderBase]: For 115939/115939 co-relation queries the response was YES. [2024-06-28 02:28:16,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7668 conditions, 1300 events. 649/1300 cut-off events. For 115939/115939 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7595 event pairs, 183 based on Foata normal form. 6/1305 useless extension candidates. Maximal degree in co-relation 7526. Up to 1110 conditions per place. [2024-06-28 02:28:16,266 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 191 selfloop transitions, 40 changer transitions 14/247 dead transitions. [2024-06-28 02:28:16,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 247 transitions, 2915 flow [2024-06-28 02:28:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 02:28:16,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 02:28:16,266 INFO L175 Difference]: Start difference. First operand has 338 places, 226 transitions, 2363 flow. Second operand 12 states and 130 transitions. [2024-06-28 02:28:16,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 247 transitions, 2915 flow [2024-06-28 02:28:16,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 247 transitions, 2821 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:16,784 INFO L231 Difference]: Finished difference. Result has 335 places, 221 transitions, 2289 flow [2024-06-28 02:28:16,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2289, PETRI_PLACES=335, PETRI_TRANSITIONS=221} [2024-06-28 02:28:16,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-28 02:28:16,784 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 221 transitions, 2289 flow [2024-06-28 02:28:16,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:16,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:16,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:16,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 02:28:16,784 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:16,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1549036413, now seen corresponding path program 5 times [2024-06-28 02:28:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802056036] [2024-06-28 02:28:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:18,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:18,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802056036] [2024-06-28 02:28:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802056036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:18,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844119883] [2024-06-28 02:28:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:18,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:18,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:18,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 221 transitions, 2289 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:18,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:18,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:18,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:18,823 INFO L124 PetriNetUnfolderBase]: 635/1278 cut-off events. [2024-06-28 02:28:18,823 INFO L125 PetriNetUnfolderBase]: For 114267/114267 co-relation queries the response was YES. [2024-06-28 02:28:18,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7537 conditions, 1278 events. 635/1278 cut-off events. For 114267/114267 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7458 event pairs, 177 based on Foata normal form. 6/1283 useless extension candidates. Maximal degree in co-relation 7396. Up to 1103 conditions per place. [2024-06-28 02:28:18,836 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 34 changer transitions 17/242 dead transitions. [2024-06-28 02:28:18,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 242 transitions, 2827 flow [2024-06-28 02:28:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:28:18,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 02:28:18,837 INFO L175 Difference]: Start difference. First operand has 335 places, 221 transitions, 2289 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:28:18,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 242 transitions, 2827 flow [2024-06-28 02:28:19,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 242 transitions, 2741 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:19,375 INFO L231 Difference]: Finished difference. Result has 331 places, 215 transitions, 2206 flow [2024-06-28 02:28:19,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2206, PETRI_PLACES=331, PETRI_TRANSITIONS=215} [2024-06-28 02:28:19,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 02:28:19,376 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 215 transitions, 2206 flow [2024-06-28 02:28:19,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:19,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:19,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:19,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 02:28:19,376 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:19,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1856931533, now seen corresponding path program 1 times [2024-06-28 02:28:19,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:19,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866867779] [2024-06-28 02:28:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:19,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:21,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:21,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866867779] [2024-06-28 02:28:21,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866867779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:21,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:21,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:21,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99933248] [2024-06-28 02:28:21,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:21,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:21,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:21,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:21,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:21,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:21,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 215 transitions, 2206 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:21,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:21,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:21,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:21,843 INFO L124 PetriNetUnfolderBase]: 621/1256 cut-off events. [2024-06-28 02:28:21,843 INFO L125 PetriNetUnfolderBase]: For 118822/118822 co-relation queries the response was YES. [2024-06-28 02:28:21,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 1256 events. 621/1256 cut-off events. For 118822/118822 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7315 event pairs, 183 based on Foata normal form. 8/1263 useless extension candidates. Maximal degree in co-relation 7286. Up to 1066 conditions per place. [2024-06-28 02:28:21,856 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 178 selfloop transitions, 27 changer transitions 28/235 dead transitions. [2024-06-28 02:28:21,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 235 transitions, 2760 flow [2024-06-28 02:28:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:28:21,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 02:28:21,857 INFO L175 Difference]: Start difference. First operand has 331 places, 215 transitions, 2206 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:28:21,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 235 transitions, 2760 flow [2024-06-28 02:28:22,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 235 transitions, 2684 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:22,413 INFO L231 Difference]: Finished difference. Result has 325 places, 196 transitions, 1936 flow [2024-06-28 02:28:22,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1936, PETRI_PLACES=325, PETRI_TRANSITIONS=196} [2024-06-28 02:28:22,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:28:22,413 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 196 transitions, 1936 flow [2024-06-28 02:28:22,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:22,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:22,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:22,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 02:28:22,413 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:22,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash -133449953, now seen corresponding path program 6 times [2024-06-28 02:28:22,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:22,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927525898] [2024-06-28 02:28:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:23,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927525898] [2024-06-28 02:28:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927525898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:23,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:23,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461482240] [2024-06-28 02:28:23,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:23,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:23,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:23,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:23,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 196 transitions, 1936 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:23,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:23,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:23,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:24,248 INFO L124 PetriNetUnfolderBase]: 577/1165 cut-off events. [2024-06-28 02:28:24,248 INFO L125 PetriNetUnfolderBase]: For 112474/112474 co-relation queries the response was YES. [2024-06-28 02:28:24,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 1165 events. 577/1165 cut-off events. For 112474/112474 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6677 event pairs, 173 based on Foata normal form. 6/1170 useless extension candidates. Maximal degree in co-relation 6665. Up to 1028 conditions per place. [2024-06-28 02:28:24,261 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 21 changer transitions 19/217 dead transitions. [2024-06-28 02:28:24,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 217 transitions, 2420 flow [2024-06-28 02:28:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 02:28:24,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 02:28:24,262 INFO L175 Difference]: Start difference. First operand has 325 places, 196 transitions, 1936 flow. Second operand 12 states and 123 transitions. [2024-06-28 02:28:24,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 217 transitions, 2420 flow [2024-06-28 02:28:24,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 217 transitions, 2301 flow, removed 8 selfloop flow, removed 23 redundant places. [2024-06-28 02:28:24,779 INFO L231 Difference]: Finished difference. Result has 308 places, 189 transitions, 1797 flow [2024-06-28 02:28:24,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1797, PETRI_PLACES=308, PETRI_TRANSITIONS=189} [2024-06-28 02:28:24,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 02:28:24,780 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 189 transitions, 1797 flow [2024-06-28 02:28:24,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:24,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:24,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:24,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 02:28:24,780 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:24,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1631707303, now seen corresponding path program 7 times [2024-06-28 02:28:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136668459] [2024-06-28 02:28:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:24,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:26,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:26,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136668459] [2024-06-28 02:28:26,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136668459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:26,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:26,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366669222] [2024-06-28 02:28:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:26,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:26,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:26,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:26,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:26,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 189 transitions, 1797 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:26,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:26,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:26,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:26,944 INFO L124 PetriNetUnfolderBase]: 558/1124 cut-off events. [2024-06-28 02:28:26,944 INFO L125 PetriNetUnfolderBase]: For 112230/112230 co-relation queries the response was YES. [2024-06-28 02:28:26,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6558 conditions, 1124 events. 558/1124 cut-off events. For 112230/112230 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6361 event pairs, 116 based on Foata normal form. 6/1129 useless extension candidates. Maximal degree in co-relation 6428. Up to 941 conditions per place. [2024-06-28 02:28:26,955 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 165 selfloop transitions, 21 changer transitions 24/212 dead transitions. [2024-06-28 02:28:26,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 212 transitions, 2275 flow [2024-06-28 02:28:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 02:28:26,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-28 02:28:26,956 INFO L175 Difference]: Start difference. First operand has 308 places, 189 transitions, 1797 flow. Second operand 12 states and 119 transitions. [2024-06-28 02:28:26,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 212 transitions, 2275 flow [2024-06-28 02:28:27,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 212 transitions, 2198 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-28 02:28:27,402 INFO L231 Difference]: Finished difference. Result has 296 places, 181 transitions, 1697 flow [2024-06-28 02:28:27,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1697, PETRI_PLACES=296, PETRI_TRANSITIONS=181} [2024-06-28 02:28:27,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 02:28:27,403 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 181 transitions, 1697 flow [2024-06-28 02:28:27,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:27,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:27,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 02:28:27,403 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:27,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash -73536505, now seen corresponding path program 8 times [2024-06-28 02:28:27,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095912187] [2024-06-28 02:28:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095912187] [2024-06-28 02:28:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095912187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533833295] [2024-06-28 02:28:28,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:28,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:28,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 181 transitions, 1697 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:28,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:28,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:28,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:29,265 INFO L124 PetriNetUnfolderBase]: 531/1061 cut-off events. [2024-06-28 02:28:29,265 INFO L125 PetriNetUnfolderBase]: For 109470/109470 co-relation queries the response was YES. [2024-06-28 02:28:29,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6276 conditions, 1061 events. 531/1061 cut-off events. For 109470/109470 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5922 event pairs, 146 based on Foata normal form. 6/1066 useless extension candidates. Maximal degree in co-relation 6151. Up to 936 conditions per place. [2024-06-28 02:28:29,275 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 26 changer transitions 14/202 dead transitions. [2024-06-28 02:28:29,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 202 transitions, 2167 flow [2024-06-28 02:28:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 02:28:29,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 02:28:29,276 INFO L175 Difference]: Start difference. First operand has 296 places, 181 transitions, 1697 flow. Second operand 12 states and 123 transitions. [2024-06-28 02:28:29,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 202 transitions, 2167 flow [2024-06-28 02:28:29,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 202 transitions, 2067 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-28 02:28:29,671 INFO L231 Difference]: Finished difference. Result has 281 places, 177 transitions, 1616 flow [2024-06-28 02:28:29,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1616, PETRI_PLACES=281, PETRI_TRANSITIONS=177} [2024-06-28 02:28:29,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 02:28:29,671 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 177 transitions, 1616 flow [2024-06-28 02:28:29,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:29,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:29,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:29,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 02:28:29,671 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:29,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash -421034435, now seen corresponding path program 9 times [2024-06-28 02:28:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:29,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278078124] [2024-06-28 02:28:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:29,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:31,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278078124] [2024-06-28 02:28:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278078124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:31,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534000842] [2024-06-28 02:28:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:31,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:31,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:31,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 177 transitions, 1616 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:31,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:31,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:31,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:31,773 INFO L124 PetriNetUnfolderBase]: 517/1035 cut-off events. [2024-06-28 02:28:31,773 INFO L125 PetriNetUnfolderBase]: For 109108/109108 co-relation queries the response was YES. [2024-06-28 02:28:31,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 1035 events. 517/1035 cut-off events. For 109108/109108 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5727 event pairs, 137 based on Foata normal form. 6/1040 useless extension candidates. Maximal degree in co-relation 5986. Up to 917 conditions per place. [2024-06-28 02:28:31,783 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 160 selfloop transitions, 18 changer transitions 15/195 dead transitions. [2024-06-28 02:28:31,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 195 transitions, 2050 flow [2024-06-28 02:28:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:28:31,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 02:28:31,783 INFO L175 Difference]: Start difference. First operand has 281 places, 177 transitions, 1616 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:28:31,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 195 transitions, 2050 flow [2024-06-28 02:28:32,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 195 transitions, 1990 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:28:32,127 INFO L231 Difference]: Finished difference. Result has 277 places, 172 transitions, 1550 flow [2024-06-28 02:28:32,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1550, PETRI_PLACES=277, PETRI_TRANSITIONS=172} [2024-06-28 02:28:32,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 02:28:32,127 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 172 transitions, 1550 flow [2024-06-28 02:28:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:32,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:32,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:32,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 02:28:32,128 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:32,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash -910582113, now seen corresponding path program 10 times [2024-06-28 02:28:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:32,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127127816] [2024-06-28 02:28:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127127816] [2024-06-28 02:28:33,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127127816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:33,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:33,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:28:33,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270789643] [2024-06-28 02:28:33,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:33,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:28:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:28:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:28:33,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:33,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 172 transitions, 1550 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:33,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:33,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:33,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:34,319 INFO L124 PetriNetUnfolderBase]: 507/1017 cut-off events. [2024-06-28 02:28:34,319 INFO L125 PetriNetUnfolderBase]: For 109079/109079 co-relation queries the response was YES. [2024-06-28 02:28:34,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6001 conditions, 1017 events. 507/1017 cut-off events. For 109079/109079 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5625 event pairs, 139 based on Foata normal form. 6/1022 useless extension candidates. Maximal degree in co-relation 5881. Up to 901 conditions per place. [2024-06-28 02:28:34,328 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 22 changer transitions 14/194 dead transitions. [2024-06-28 02:28:34,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 194 transitions, 2006 flow [2024-06-28 02:28:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:28:34,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 02:28:34,329 INFO L175 Difference]: Start difference. First operand has 277 places, 172 transitions, 1550 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:28:34,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 194 transitions, 2006 flow [2024-06-28 02:28:34,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 194 transitions, 1957 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:34,685 INFO L231 Difference]: Finished difference. Result has 272 places, 170 transitions, 1519 flow [2024-06-28 02:28:34,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1519, PETRI_PLACES=272, PETRI_TRANSITIONS=170} [2024-06-28 02:28:34,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-28 02:28:34,686 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 170 transitions, 1519 flow [2024-06-28 02:28:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:34,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:34,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 02:28:34,686 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:34,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash -310211915, now seen corresponding path program 11 times [2024-06-28 02:28:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604254611] [2024-06-28 02:28:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:36,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:36,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604254611] [2024-06-28 02:28:36,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604254611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:36,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:36,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872103326] [2024-06-28 02:28:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:36,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:36,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:36,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 170 transitions, 1519 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:36,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:36,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:36,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:36,630 INFO L124 PetriNetUnfolderBase]: 493/991 cut-off events. [2024-06-28 02:28:36,630 INFO L125 PetriNetUnfolderBase]: For 107396/107396 co-relation queries the response was YES. [2024-06-28 02:28:36,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 991 events. 493/991 cut-off events. For 107396/107396 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5453 event pairs, 133 based on Foata normal form. 6/996 useless extension candidates. Maximal degree in co-relation 5761. Up to 870 conditions per place. [2024-06-28 02:28:36,639 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 151 selfloop transitions, 20 changer transitions 17/190 dead transitions. [2024-06-28 02:28:36,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 190 transitions, 1951 flow [2024-06-28 02:28:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:28:36,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 02:28:36,640 INFO L175 Difference]: Start difference. First operand has 272 places, 170 transitions, 1519 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:28:36,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 190 transitions, 1951 flow [2024-06-28 02:28:37,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 190 transitions, 1885 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:37,024 INFO L231 Difference]: Finished difference. Result has 269 places, 164 transitions, 1436 flow [2024-06-28 02:28:37,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1436, PETRI_PLACES=269, PETRI_TRANSITIONS=164} [2024-06-28 02:28:37,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 02:28:37,024 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 164 transitions, 1436 flow [2024-06-28 02:28:37,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:37,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:37,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:37,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 02:28:37,024 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:37,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1076041509, now seen corresponding path program 2 times [2024-06-28 02:28:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:37,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923146250] [2024-06-28 02:28:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:37,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923146250] [2024-06-28 02:28:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923146250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:38,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863805887] [2024-06-28 02:28:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:38,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:38,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:38,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 164 transitions, 1436 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:38,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:38,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:38,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:39,085 INFO L124 PetriNetUnfolderBase]: 479/965 cut-off events. [2024-06-28 02:28:39,085 INFO L125 PetriNetUnfolderBase]: For 114309/114309 co-relation queries the response was YES. [2024-06-28 02:28:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 965 events. 479/965 cut-off events. For 114309/114309 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5266 event pairs, 135 based on Foata normal form. 8/972 useless extension candidates. Maximal degree in co-relation 5667. Up to 851 conditions per place. [2024-06-28 02:28:39,093 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 22 changer transitions 7/181 dead transitions. [2024-06-28 02:28:39,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 181 transitions, 1868 flow [2024-06-28 02:28:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:28:39,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 02:28:39,094 INFO L175 Difference]: Start difference. First operand has 269 places, 164 transitions, 1436 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:28:39,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 181 transitions, 1868 flow [2024-06-28 02:28:39,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 181 transitions, 1818 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:39,415 INFO L231 Difference]: Finished difference. Result has 262 places, 161 transitions, 1410 flow [2024-06-28 02:28:39,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1410, PETRI_PLACES=262, PETRI_TRANSITIONS=161} [2024-06-28 02:28:39,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 02:28:39,416 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 161 transitions, 1410 flow [2024-06-28 02:28:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:39,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:39,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:39,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 02:28:39,416 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:39,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1076221247, now seen corresponding path program 12 times [2024-06-28 02:28:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486190103] [2024-06-28 02:28:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:39,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:40,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486190103] [2024-06-28 02:28:40,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486190103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:40,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:40,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:40,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977671065] [2024-06-28 02:28:40,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:40,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:40,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:40,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:40,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:40,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:40,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 161 transitions, 1410 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:40,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:40,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:40,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:41,336 INFO L124 PetriNetUnfolderBase]: 470/950 cut-off events. [2024-06-28 02:28:41,336 INFO L125 PetriNetUnfolderBase]: For 106018/106018 co-relation queries the response was YES. [2024-06-28 02:28:41,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5642 conditions, 950 events. 470/950 cut-off events. For 106018/106018 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5154 event pairs, 129 based on Foata normal form. 6/955 useless extension candidates. Maximal degree in co-relation 5528. Up to 842 conditions per place. [2024-06-28 02:28:41,344 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 19 changer transitions 11/179 dead transitions. [2024-06-28 02:28:41,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 179 transitions, 1812 flow [2024-06-28 02:28:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 02:28:41,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 02:28:41,345 INFO L175 Difference]: Start difference. First operand has 262 places, 161 transitions, 1410 flow. Second operand 12 states and 118 transitions. [2024-06-28 02:28:41,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 179 transitions, 1812 flow [2024-06-28 02:28:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 179 transitions, 1762 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 02:28:41,648 INFO L231 Difference]: Finished difference. Result has 261 places, 158 transitions, 1376 flow [2024-06-28 02:28:41,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1376, PETRI_PLACES=261, PETRI_TRANSITIONS=158} [2024-06-28 02:28:41,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 02:28:41,649 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 158 transitions, 1376 flow [2024-06-28 02:28:41,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:41,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:41,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:41,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 02:28:41,649 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:41,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash -351938901, now seen corresponding path program 13 times [2024-06-28 02:28:41,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:41,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148875687] [2024-06-28 02:28:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:43,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:43,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148875687] [2024-06-28 02:28:43,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148875687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:43,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:43,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308338216] [2024-06-28 02:28:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:43,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:43,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:43,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 158 transitions, 1376 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:43,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:43,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:43,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:44,141 INFO L124 PetriNetUnfolderBase]: 460/932 cut-off events. [2024-06-28 02:28:44,141 INFO L125 PetriNetUnfolderBase]: For 106158/106158 co-relation queries the response was YES. [2024-06-28 02:28:44,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5560 conditions, 932 events. 460/932 cut-off events. For 106158/106158 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5041 event pairs, 129 based on Foata normal form. 6/937 useless extension candidates. Maximal degree in co-relation 5446. Up to 829 conditions per place. [2024-06-28 02:28:44,148 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 15 changer transitions 17/175 dead transitions. [2024-06-28 02:28:44,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 175 transitions, 1768 flow [2024-06-28 02:28:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:28:44,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 02:28:44,149 INFO L175 Difference]: Start difference. First operand has 261 places, 158 transitions, 1376 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:28:44,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 175 transitions, 1768 flow [2024-06-28 02:28:44,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 175 transitions, 1724 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:44,416 INFO L231 Difference]: Finished difference. Result has 258 places, 151 transitions, 1297 flow [2024-06-28 02:28:44,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1297, PETRI_PLACES=258, PETRI_TRANSITIONS=151} [2024-06-28 02:28:44,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 02:28:44,416 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 151 transitions, 1297 flow [2024-06-28 02:28:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:44,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:44,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 02:28:44,417 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:44,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash 479697451, now seen corresponding path program 14 times [2024-06-28 02:28:44,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:44,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178791064] [2024-06-28 02:28:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:44,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:45,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:45,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178791064] [2024-06-28 02:28:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178791064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019274859] [2024-06-28 02:28:45,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:45,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:45,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:45,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:45,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 151 transitions, 1297 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:45,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:45,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:45,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:46,325 INFO L124 PetriNetUnfolderBase]: 449/907 cut-off events. [2024-06-28 02:28:46,325 INFO L125 PetriNetUnfolderBase]: For 106137/106137 co-relation queries the response was YES. [2024-06-28 02:28:46,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5431 conditions, 907 events. 449/907 cut-off events. For 106137/106137 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4854 event pairs, 129 based on Foata normal form. 6/912 useless extension candidates. Maximal degree in co-relation 5318. Up to 794 conditions per place. [2024-06-28 02:28:46,332 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 18 changer transitions 17/171 dead transitions. [2024-06-28 02:28:46,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 171 transitions, 1691 flow [2024-06-28 02:28:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 02:28:46,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 02:28:46,332 INFO L175 Difference]: Start difference. First operand has 258 places, 151 transitions, 1297 flow. Second operand 12 states and 118 transitions. [2024-06-28 02:28:46,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 171 transitions, 1691 flow [2024-06-28 02:28:46,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 171 transitions, 1624 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:46,585 INFO L231 Difference]: Finished difference. Result has 247 places, 146 transitions, 1224 flow [2024-06-28 02:28:46,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1224, PETRI_PLACES=247, PETRI_TRANSITIONS=146} [2024-06-28 02:28:46,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 02:28:46,585 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 146 transitions, 1224 flow [2024-06-28 02:28:46,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:46,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:46,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:46,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 02:28:46,585 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:46,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1927240021, now seen corresponding path program 15 times [2024-06-28 02:28:46,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:46,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456256315] [2024-06-28 02:28:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:46,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:48,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456256315] [2024-06-28 02:28:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456256315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:48,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:48,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:48,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974738044] [2024-06-28 02:28:48,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:48,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:48,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:48,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:48,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:48,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:48,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 146 transitions, 1224 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:48,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:48,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:48,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:49,308 INFO L124 PetriNetUnfolderBase]: 433/875 cut-off events. [2024-06-28 02:28:49,308 INFO L125 PetriNetUnfolderBase]: For 105980/105980 co-relation queries the response was YES. [2024-06-28 02:28:49,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 875 events. 433/875 cut-off events. For 105980/105980 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4624 event pairs, 127 based on Foata normal form. 6/880 useless extension candidates. Maximal degree in co-relation 5156. Up to 767 conditions per place. [2024-06-28 02:28:49,315 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 20 changer transitions 11/165 dead transitions. [2024-06-28 02:28:49,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 165 transitions, 1608 flow [2024-06-28 02:28:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 02:28:49,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-28 02:28:49,315 INFO L175 Difference]: Start difference. First operand has 247 places, 146 transitions, 1224 flow. Second operand 12 states and 117 transitions. [2024-06-28 02:28:49,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 165 transitions, 1608 flow [2024-06-28 02:28:49,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 165 transitions, 1558 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:49,595 INFO L231 Difference]: Finished difference. Result has 239 places, 143 transitions, 1190 flow [2024-06-28 02:28:49,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1190, PETRI_PLACES=239, PETRI_TRANSITIONS=143} [2024-06-28 02:28:49,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 02:28:49,595 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 143 transitions, 1190 flow [2024-06-28 02:28:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:49,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:49,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:49,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 02:28:49,596 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:49,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1643444929, now seen corresponding path program 16 times [2024-06-28 02:28:49,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:49,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303509934] [2024-06-28 02:28:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:51,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:51,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303509934] [2024-06-28 02:28:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303509934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:51,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645934951] [2024-06-28 02:28:51,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:51,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:51,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:51,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 143 transitions, 1190 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:51,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:51,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:51,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:51,653 INFO L124 PetriNetUnfolderBase]: 423/857 cut-off events. [2024-06-28 02:28:51,653 INFO L125 PetriNetUnfolderBase]: For 105933/105933 co-relation queries the response was YES. [2024-06-28 02:28:51,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 857 events. 423/857 cut-off events. For 105933/105933 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4499 event pairs, 125 based on Foata normal form. 6/862 useless extension candidates. Maximal degree in co-relation 5064. Up to 749 conditions per place. [2024-06-28 02:28:51,659 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 122 selfloop transitions, 14 changer transitions 24/162 dead transitions. [2024-06-28 02:28:51,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 162 transitions, 1564 flow [2024-06-28 02:28:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:28:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:28:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:28:51,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 02:28:51,660 INFO L175 Difference]: Start difference. First operand has 239 places, 143 transitions, 1190 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:28:51,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 162 transitions, 1564 flow [2024-06-28 02:28:51,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 162 transitions, 1508 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:28:51,899 INFO L231 Difference]: Finished difference. Result has 235 places, 134 transitions, 1078 flow [2024-06-28 02:28:51,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1078, PETRI_PLACES=235, PETRI_TRANSITIONS=134} [2024-06-28 02:28:51,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 02:28:51,899 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 134 transitions, 1078 flow [2024-06-28 02:28:51,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:51,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:51,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:51,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 02:28:51,900 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:51,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash 545476661, now seen corresponding path program 17 times [2024-06-28 02:28:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:51,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997447965] [2024-06-28 02:28:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:53,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997447965] [2024-06-28 02:28:53,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997447965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:53,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:53,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:53,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962747591] [2024-06-28 02:28:53,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:53,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:53,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:53,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:53,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:53,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:53,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 134 transitions, 1078 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:53,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:53,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:53,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:54,059 INFO L124 PetriNetUnfolderBase]: 407/817 cut-off events. [2024-06-28 02:28:54,059 INFO L125 PetriNetUnfolderBase]: For 105739/105739 co-relation queries the response was YES. [2024-06-28 02:28:54,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 817 events. 407/817 cut-off events. For 105739/105739 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4216 event pairs, 91 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 4862. Up to 691 conditions per place. [2024-06-28 02:28:54,065 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 14 changer transitions 18/152 dead transitions. [2024-06-28 02:28:54,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 152 transitions, 1424 flow [2024-06-28 02:28:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 02:28:54,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 02:28:54,066 INFO L175 Difference]: Start difference. First operand has 235 places, 134 transitions, 1078 flow. Second operand 11 states and 106 transitions. [2024-06-28 02:28:54,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 152 transitions, 1424 flow [2024-06-28 02:28:54,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 152 transitions, 1334 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 02:28:54,315 INFO L231 Difference]: Finished difference. Result has 219 places, 129 transitions, 996 flow [2024-06-28 02:28:54,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=996, PETRI_PLACES=219, PETRI_TRANSITIONS=129} [2024-06-28 02:28:54,315 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 02:28:54,315 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 129 transitions, 996 flow [2024-06-28 02:28:54,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:54,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:54,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 02:28:54,316 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:54,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1172603069, now seen corresponding path program 18 times [2024-06-28 02:28:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:54,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492792676] [2024-06-28 02:28:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492792676] [2024-06-28 02:28:55,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492792676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:55,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:55,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:55,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866831729] [2024-06-28 02:28:55,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:55,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:55,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:55,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:55,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:55,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:55,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 129 transitions, 996 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:55,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:55,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:55,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:56,406 INFO L124 PetriNetUnfolderBase]: 424/860 cut-off events. [2024-06-28 02:28:56,406 INFO L125 PetriNetUnfolderBase]: For 151825/151825 co-relation queries the response was YES. [2024-06-28 02:28:56,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6194 conditions, 860 events. 424/860 cut-off events. For 151825/151825 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4539 event pairs, 133 based on Foata normal form. 6/865 useless extension candidates. Maximal degree in co-relation 6096. Up to 626 conditions per place. [2024-06-28 02:28:56,412 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 26 changer transitions 9/148 dead transitions. [2024-06-28 02:28:56,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 148 transitions, 1540 flow [2024-06-28 02:28:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:28:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:28:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 02:28:56,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 02:28:56,413 INFO L175 Difference]: Start difference. First operand has 219 places, 129 transitions, 996 flow. Second operand 10 states and 112 transitions. [2024-06-28 02:28:56,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 148 transitions, 1540 flow [2024-06-28 02:28:56,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 148 transitions, 1492 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:56,723 INFO L231 Difference]: Finished difference. Result has 210 places, 125 transitions, 982 flow [2024-06-28 02:28:56,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=982, PETRI_PLACES=210, PETRI_TRANSITIONS=125} [2024-06-28 02:28:56,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-28 02:28:56,724 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 125 transitions, 982 flow [2024-06-28 02:28:56,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:56,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:56,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:56,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 02:28:56,724 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1556616695, now seen corresponding path program 19 times [2024-06-28 02:28:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254123766] [2024-06-28 02:28:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254123766] [2024-06-28 02:28:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254123766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:59,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:59,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:28:59,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469596996] [2024-06-28 02:28:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:28:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:28:59,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:28:59,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:28:59,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 125 transitions, 982 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:59,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:59,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:28:59,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:59,641 INFO L124 PetriNetUnfolderBase]: 412/840 cut-off events. [2024-06-28 02:28:59,641 INFO L125 PetriNetUnfolderBase]: For 135772/135772 co-relation queries the response was YES. [2024-06-28 02:28:59,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5980 conditions, 840 events. 412/840 cut-off events. For 135772/135772 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4433 event pairs, 129 based on Foata normal form. 6/845 useless extension candidates. Maximal degree in co-relation 5886. Up to 738 conditions per place. [2024-06-28 02:28:59,648 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 15 changer transitions 18/142 dead transitions. [2024-06-28 02:28:59,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 142 transitions, 1306 flow [2024-06-28 02:28:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:28:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:28:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 02:28:59,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 02:28:59,648 INFO L175 Difference]: Start difference. First operand has 210 places, 125 transitions, 982 flow. Second operand 11 states and 108 transitions. [2024-06-28 02:28:59,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 142 transitions, 1306 flow [2024-06-28 02:28:59,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 142 transitions, 1252 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:28:59,917 INFO L231 Difference]: Finished difference. Result has 208 places, 120 transitions, 935 flow [2024-06-28 02:28:59,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=935, PETRI_PLACES=208, PETRI_TRANSITIONS=120} [2024-06-28 02:28:59,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 02:28:59,917 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 120 transitions, 935 flow [2024-06-28 02:28:59,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:28:59,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:59,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 02:28:59,918 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:28:59,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1579502481, now seen corresponding path program 20 times [2024-06-28 02:28:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:59,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400731527] [2024-06-28 02:28:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:01,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:01,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400731527] [2024-06-28 02:29:01,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400731527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:01,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:01,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:01,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833997740] [2024-06-28 02:29:01,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:01,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:01,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:01,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:01,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:01,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:01,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 120 transitions, 935 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:01,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:01,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:01,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:01,996 INFO L124 PetriNetUnfolderBase]: 394/806 cut-off events. [2024-06-28 02:29:01,996 INFO L125 PetriNetUnfolderBase]: For 130291/130291 co-relation queries the response was YES. [2024-06-28 02:29:02,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 806 events. 394/806 cut-off events. For 130291/130291 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4201 event pairs, 123 based on Foata normal form. 6/811 useless extension candidates. Maximal degree in co-relation 5696. Up to 698 conditions per place. [2024-06-28 02:29:02,002 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 18 changer transitions 16/137 dead transitions. [2024-06-28 02:29:02,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 137 transitions, 1253 flow [2024-06-28 02:29:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 02:29:02,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 02:29:02,003 INFO L175 Difference]: Start difference. First operand has 208 places, 120 transitions, 935 flow. Second operand 11 states and 109 transitions. [2024-06-28 02:29:02,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 137 transitions, 1253 flow [2024-06-28 02:29:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 137 transitions, 1213 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:02,243 INFO L231 Difference]: Finished difference. Result has 200 places, 115 transitions, 903 flow [2024-06-28 02:29:02,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=903, PETRI_PLACES=200, PETRI_TRANSITIONS=115} [2024-06-28 02:29:02,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-28 02:29:02,243 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 115 transitions, 903 flow [2024-06-28 02:29:02,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:02,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:02,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:02,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 02:29:02,244 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:02,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:02,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1584144111, now seen corresponding path program 21 times [2024-06-28 02:29:02,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:02,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871803047] [2024-06-28 02:29:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:02,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:04,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:04,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871803047] [2024-06-28 02:29:04,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871803047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:04,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:04,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:04,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574679485] [2024-06-28 02:29:04,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:04,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:04,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:04,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:04,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:04,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 115 transitions, 903 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:04,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:04,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:04,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:04,537 INFO L124 PetriNetUnfolderBase]: 353/727 cut-off events. [2024-06-28 02:29:04,537 INFO L125 PetriNetUnfolderBase]: For 101878/101878 co-relation queries the response was YES. [2024-06-28 02:29:04,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 727 events. 353/727 cut-off events. For 101878/101878 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3684 event pairs, 108 based on Foata normal form. 14/740 useless extension candidates. Maximal degree in co-relation 4312. Up to 564 conditions per place. [2024-06-28 02:29:04,542 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 89 selfloop transitions, 15 changer transitions 25/131 dead transitions. [2024-06-28 02:29:04,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 131 transitions, 1243 flow [2024-06-28 02:29:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:29:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:29:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:29:04,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:29:04,543 INFO L175 Difference]: Start difference. First operand has 200 places, 115 transitions, 903 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:29:04,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 131 transitions, 1243 flow [2024-06-28 02:29:04,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 131 transitions, 1199 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:04,707 INFO L231 Difference]: Finished difference. Result has 193 places, 100 transitions, 759 flow [2024-06-28 02:29:04,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=759, PETRI_PLACES=193, PETRI_TRANSITIONS=100} [2024-06-28 02:29:04,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-28 02:29:04,707 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 100 transitions, 759 flow [2024-06-28 02:29:04,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:04,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:04,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:04,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 02:29:04,708 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:04,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash 111421209, now seen corresponding path program 22 times [2024-06-28 02:29:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:04,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64393998] [2024-06-28 02:29:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:04,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:06,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64393998] [2024-06-28 02:29:06,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64393998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:06,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:06,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909299240] [2024-06-28 02:29:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:06,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:06,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:06,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 100 transitions, 759 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:06,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:06,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:06,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:06,782 INFO L124 PetriNetUnfolderBase]: 298/610 cut-off events. [2024-06-28 02:29:06,783 INFO L125 PetriNetUnfolderBase]: For 74514/74514 co-relation queries the response was YES. [2024-06-28 02:29:06,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 610 events. 298/610 cut-off events. For 74514/74514 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2926 event pairs, 90 based on Foata normal form. 6/615 useless extension candidates. Maximal degree in co-relation 3712. Up to 526 conditions per place. [2024-06-28 02:29:06,787 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 11 changer transitions 17/116 dead transitions. [2024-06-28 02:29:06,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 116 transitions, 1027 flow [2024-06-28 02:29:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 02:29:06,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-28 02:29:06,789 INFO L175 Difference]: Start difference. First operand has 193 places, 100 transitions, 759 flow. Second operand 11 states and 103 transitions. [2024-06-28 02:29:06,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 116 transitions, 1027 flow [2024-06-28 02:29:06,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 116 transitions, 919 flow, removed 11 selfloop flow, removed 21 redundant places. [2024-06-28 02:29:06,939 INFO L231 Difference]: Finished difference. Result has 175 places, 95 transitions, 654 flow [2024-06-28 02:29:06,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=654, PETRI_PLACES=175, PETRI_TRANSITIONS=95} [2024-06-28 02:29:06,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 02:29:06,939 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 95 transitions, 654 flow [2024-06-28 02:29:06,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:06,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:06,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:06,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 02:29:06,939 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:06,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash 226117733, now seen corresponding path program 23 times [2024-06-28 02:29:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:06,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041688075] [2024-06-28 02:29:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:08,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:08,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041688075] [2024-06-28 02:29:08,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041688075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:08,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:08,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:29:08,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713877052] [2024-06-28 02:29:08,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:08,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:29:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:29:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:29:08,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 95 transitions, 654 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:08,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:08,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:08,763 INFO L124 PetriNetUnfolderBase]: 288/592 cut-off events. [2024-06-28 02:29:08,763 INFO L125 PetriNetUnfolderBase]: For 63789/63789 co-relation queries the response was YES. [2024-06-28 02:29:08,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 592 events. 288/592 cut-off events. For 63789/63789 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2820 event pairs, 89 based on Foata normal form. 6/597 useless extension candidates. Maximal degree in co-relation 3401. Up to 510 conditions per place. [2024-06-28 02:29:08,767 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 13 changer transitions 14/113 dead transitions. [2024-06-28 02:29:08,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 113 transitions, 925 flow [2024-06-28 02:29:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 02:29:08,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-28 02:29:08,769 INFO L175 Difference]: Start difference. First operand has 175 places, 95 transitions, 654 flow. Second operand 11 states and 103 transitions. [2024-06-28 02:29:08,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 113 transitions, 925 flow [2024-06-28 02:29:08,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 113 transitions, 893 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:08,869 INFO L231 Difference]: Finished difference. Result has 169 places, 93 transitions, 635 flow [2024-06-28 02:29:08,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=635, PETRI_PLACES=169, PETRI_TRANSITIONS=93} [2024-06-28 02:29:08,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 02:29:08,870 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 93 transitions, 635 flow [2024-06-28 02:29:08,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:08,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:08,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:08,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 02:29:08,870 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:08,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1348415761, now seen corresponding path program 24 times [2024-06-28 02:29:08,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:08,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727260288] [2024-06-28 02:29:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:08,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727260288] [2024-06-28 02:29:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727260288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:10,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:10,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304695507] [2024-06-28 02:29:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:10,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:10,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:10,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:10,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 93 transitions, 635 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:10,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:10,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:10,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:10,459 INFO L124 PetriNetUnfolderBase]: 259/533 cut-off events. [2024-06-28 02:29:10,459 INFO L125 PetriNetUnfolderBase]: For 45591/45591 co-relation queries the response was YES. [2024-06-28 02:29:10,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 533 events. 259/533 cut-off events. For 45591/45591 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2459 event pairs, 70 based on Foata normal form. 6/538 useless extension candidates. Maximal degree in co-relation 2793. Up to 415 conditions per place. [2024-06-28 02:29:10,462 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 19 changer transitions 11/110 dead transitions. [2024-06-28 02:29:10,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 110 transitions, 899 flow [2024-06-28 02:29:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 02:29:10,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 02:29:10,464 INFO L175 Difference]: Start difference. First operand has 169 places, 93 transitions, 635 flow. Second operand 11 states and 108 transitions. [2024-06-28 02:29:10,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 110 transitions, 899 flow [2024-06-28 02:29:10,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 110 transitions, 863 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:10,542 INFO L231 Difference]: Finished difference. Result has 165 places, 90 transitions, 623 flow [2024-06-28 02:29:10,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=623, PETRI_PLACES=165, PETRI_TRANSITIONS=90} [2024-06-28 02:29:10,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-28 02:29:10,542 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 90 transitions, 623 flow [2024-06-28 02:29:10,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:10,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:10,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:10,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 02:29:10,543 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:10,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash 221649083, now seen corresponding path program 25 times [2024-06-28 02:29:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125878894] [2024-06-28 02:29:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125878894] [2024-06-28 02:29:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125878894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:29:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510489837] [2024-06-28 02:29:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:11,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:29:11,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:29:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:29:12,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:12,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 90 transitions, 623 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:12,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:12,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:12,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:12,262 INFO L124 PetriNetUnfolderBase]: 261/539 cut-off events. [2024-06-28 02:29:12,262 INFO L125 PetriNetUnfolderBase]: For 45597/45597 co-relation queries the response was YES. [2024-06-28 02:29:12,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 539 events. 261/539 cut-off events. For 45597/45597 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2511 event pairs, 74 based on Foata normal form. 6/544 useless extension candidates. Maximal degree in co-relation 2799. Up to 457 conditions per place. [2024-06-28 02:29:12,265 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 11 changer transitions 17/109 dead transitions. [2024-06-28 02:29:12,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 109 transitions, 888 flow [2024-06-28 02:29:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:12,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 02:29:12,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-28 02:29:12,266 INFO L175 Difference]: Start difference. First operand has 165 places, 90 transitions, 623 flow. Second operand 11 states and 102 transitions. [2024-06-28 02:29:12,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 109 transitions, 888 flow [2024-06-28 02:29:12,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 109 transitions, 844 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:12,351 INFO L231 Difference]: Finished difference. Result has 164 places, 88 transitions, 592 flow [2024-06-28 02:29:12,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=592, PETRI_PLACES=164, PETRI_TRANSITIONS=88} [2024-06-28 02:29:12,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-28 02:29:12,352 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 88 transitions, 592 flow [2024-06-28 02:29:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:12,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:12,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:12,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 02:29:12,352 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:12,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:12,352 INFO L85 PathProgramCache]: Analyzing trace with hash -702556339, now seen corresponding path program 26 times [2024-06-28 02:29:12,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:12,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482237541] [2024-06-28 02:29:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:14,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482237541] [2024-06-28 02:29:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482237541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:14,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137082966] [2024-06-28 02:29:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:14,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:14,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:14,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 88 transitions, 592 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:14,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:14,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:14,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:14,447 INFO L124 PetriNetUnfolderBase]: 245/507 cut-off events. [2024-06-28 02:29:14,447 INFO L125 PetriNetUnfolderBase]: For 42552/42552 co-relation queries the response was YES. [2024-06-28 02:29:14,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 507 events. 245/507 cut-off events. For 42552/42552 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2313 event pairs, 69 based on Foata normal form. 6/512 useless extension candidates. Maximal degree in co-relation 2661. Up to 428 conditions per place. [2024-06-28 02:29:14,450 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 11 changer transitions 14/103 dead transitions. [2024-06-28 02:29:14,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 103 transitions, 830 flow [2024-06-28 02:29:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 02:29:14,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-28 02:29:14,450 INFO L175 Difference]: Start difference. First operand has 164 places, 88 transitions, 592 flow. Second operand 11 states and 102 transitions. [2024-06-28 02:29:14,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 103 transitions, 830 flow [2024-06-28 02:29:14,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 103 transitions, 796 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 02:29:14,511 INFO L231 Difference]: Finished difference. Result has 160 places, 84 transitions, 564 flow [2024-06-28 02:29:14,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=160, PETRI_TRANSITIONS=84} [2024-06-28 02:29:14,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 02:29:14,512 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 84 transitions, 564 flow [2024-06-28 02:29:14,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:14,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:14,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:14,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 02:29:14,512 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:14,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1348588741, now seen corresponding path program 27 times [2024-06-28 02:29:14,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:14,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506871265] [2024-06-28 02:29:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:14,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:16,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:16,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506871265] [2024-06-28 02:29:16,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506871265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:16,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:16,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:29:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913237533] [2024-06-28 02:29:16,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:16,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:29:16,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:29:16,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:29:16,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:16,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 84 transitions, 564 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:16,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:16,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:16,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:16,456 INFO L124 PetriNetUnfolderBase]: 231/481 cut-off events. [2024-06-28 02:29:16,456 INFO L125 PetriNetUnfolderBase]: For 42539/42539 co-relation queries the response was YES. [2024-06-28 02:29:16,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 481 events. 231/481 cut-off events. For 42539/42539 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2158 event pairs, 64 based on Foata normal form. 6/486 useless extension candidates. Maximal degree in co-relation 2575. Up to 377 conditions per place. [2024-06-28 02:29:16,458 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 12 changer transitions 17/101 dead transitions. [2024-06-28 02:29:16,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 101 transitions, 808 flow [2024-06-28 02:29:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 02:29:16,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 02:29:16,459 INFO L175 Difference]: Start difference. First operand has 160 places, 84 transitions, 564 flow. Second operand 11 states and 106 transitions. [2024-06-28 02:29:16,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 101 transitions, 808 flow [2024-06-28 02:29:16,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 101 transitions, 774 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:16,519 INFO L231 Difference]: Finished difference. Result has 153 places, 77 transitions, 521 flow [2024-06-28 02:29:16,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=521, PETRI_PLACES=153, PETRI_TRANSITIONS=77} [2024-06-28 02:29:16,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 02:29:16,519 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 77 transitions, 521 flow [2024-06-28 02:29:16,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:16,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:16,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:16,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 02:29:16,520 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:16,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash 796590869, now seen corresponding path program 28 times [2024-06-28 02:29:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:16,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648939004] [2024-06-28 02:29:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648939004] [2024-06-28 02:29:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648939004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:18,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060812185] [2024-06-28 02:29:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:18,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:18,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 77 transitions, 521 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:18,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:18,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:18,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:18,810 INFO L124 PetriNetUnfolderBase]: 215/449 cut-off events. [2024-06-28 02:29:18,811 INFO L125 PetriNetUnfolderBase]: For 36847/36847 co-relation queries the response was YES. [2024-06-28 02:29:18,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 449 events. 215/449 cut-off events. For 36847/36847 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1968 event pairs, 63 based on Foata normal form. 6/454 useless extension candidates. Maximal degree in co-relation 2401. Up to 366 conditions per place. [2024-06-28 02:29:18,813 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 14 changer transitions 9/91 dead transitions. [2024-06-28 02:29:18,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 91 transitions, 733 flow [2024-06-28 02:29:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 02:29:18,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-28 02:29:18,815 INFO L175 Difference]: Start difference. First operand has 153 places, 77 transitions, 521 flow. Second operand 11 states and 103 transitions. [2024-06-28 02:29:18,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 91 transitions, 733 flow [2024-06-28 02:29:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 91 transitions, 693 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 02:29:18,873 INFO L231 Difference]: Finished difference. Result has 143 places, 74 transitions, 496 flow [2024-06-28 02:29:18,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=143, PETRI_TRANSITIONS=74} [2024-06-28 02:29:18,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 02:29:18,874 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 74 transitions, 496 flow [2024-06-28 02:29:18,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:18,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:18,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:18,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 02:29:18,874 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:18,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:18,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1288928155, now seen corresponding path program 29 times [2024-06-28 02:29:18,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:18,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87236185] [2024-06-28 02:29:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:20,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:20,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87236185] [2024-06-28 02:29:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87236185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:20,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:20,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706274181] [2024-06-28 02:29:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:20,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:20,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:20,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 74 transitions, 496 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:20,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:20,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:20,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:20,824 INFO L124 PetriNetUnfolderBase]: 205/431 cut-off events. [2024-06-28 02:29:20,824 INFO L125 PetriNetUnfolderBase]: For 29591/29591 co-relation queries the response was YES. [2024-06-28 02:29:20,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 431 events. 205/431 cut-off events. For 29591/29591 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1873 event pairs, 63 based on Foata normal form. 6/436 useless extension candidates. Maximal degree in co-relation 2239. Up to 362 conditions per place. [2024-06-28 02:29:20,827 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 13 changer transitions 8/87 dead transitions. [2024-06-28 02:29:20,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 87 transitions, 698 flow [2024-06-28 02:29:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 02:29:20,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 02:29:20,828 INFO L175 Difference]: Start difference. First operand has 143 places, 74 transitions, 496 flow. Second operand 11 states and 100 transitions. [2024-06-28 02:29:20,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 87 transitions, 698 flow [2024-06-28 02:29:20,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 87 transitions, 664 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:20,876 INFO L231 Difference]: Finished difference. Result has 139 places, 72 transitions, 477 flow [2024-06-28 02:29:20,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=477, PETRI_PLACES=139, PETRI_TRANSITIONS=72} [2024-06-28 02:29:20,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-28 02:29:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 72 transitions, 477 flow [2024-06-28 02:29:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:20,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:20,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 02:29:20,877 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:20,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 226892117, now seen corresponding path program 3 times [2024-06-28 02:29:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365525588] [2024-06-28 02:29:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365525588] [2024-06-28 02:29:22,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365525588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:22,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:22,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991824533] [2024-06-28 02:29:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:22,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:22,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:22,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 72 transitions, 477 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:22,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:22,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:22,949 INFO L124 PetriNetUnfolderBase]: 196/416 cut-off events. [2024-06-28 02:29:22,949 INFO L125 PetriNetUnfolderBase]: For 27171/27171 co-relation queries the response was YES. [2024-06-28 02:29:22,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 416 events. 196/416 cut-off events. For 27171/27171 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1781 event pairs, 68 based on Foata normal form. 8/423 useless extension candidates. Maximal degree in co-relation 2041. Up to 342 conditions per place. [2024-06-28 02:29:22,951 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 56 selfloop transitions, 7 changer transitions 19/84 dead transitions. [2024-06-28 02:29:22,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 84 transitions, 671 flow [2024-06-28 02:29:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 02:29:22,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 02:29:22,952 INFO L175 Difference]: Start difference. First operand has 139 places, 72 transitions, 477 flow. Second operand 11 states and 100 transitions. [2024-06-28 02:29:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 84 transitions, 671 flow [2024-06-28 02:29:22,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 84 transitions, 639 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:22,989 INFO L231 Difference]: Finished difference. Result has 137 places, 62 transitions, 392 flow [2024-06-28 02:29:22,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=392, PETRI_PLACES=137, PETRI_TRANSITIONS=62} [2024-06-28 02:29:22,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 02:29:22,989 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 62 transitions, 392 flow [2024-06-28 02:29:22,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:22,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:22,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:22,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 02:29:22,989 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:22,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1229397121, now seen corresponding path program 30 times [2024-06-28 02:29:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:22,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122687024] [2024-06-28 02:29:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:22,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122687024] [2024-06-28 02:29:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122687024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:24,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:24,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:24,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049059417] [2024-06-28 02:29:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:24,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:24,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:24,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 62 transitions, 392 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:24,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:24,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:24,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:25,038 INFO L124 PetriNetUnfolderBase]: 165/351 cut-off events. [2024-06-28 02:29:25,038 INFO L125 PetriNetUnfolderBase]: For 18293/18293 co-relation queries the response was YES. [2024-06-28 02:29:25,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1581 conditions, 351 events. 165/351 cut-off events. For 18293/18293 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1428 event pairs, 47 based on Foata normal form. 6/356 useless extension candidates. Maximal degree in co-relation 1523. Up to 269 conditions per place. [2024-06-28 02:29:25,040 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 52 selfloop transitions, 10 changer transitions 14/78 dead transitions. [2024-06-28 02:29:25,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 78 transitions, 588 flow [2024-06-28 02:29:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-28 02:29:25,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-28 02:29:25,041 INFO L175 Difference]: Start difference. First operand has 137 places, 62 transitions, 392 flow. Second operand 11 states and 101 transitions. [2024-06-28 02:29:25,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 78 transitions, 588 flow [2024-06-28 02:29:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 78 transitions, 524 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-28 02:29:25,062 INFO L231 Difference]: Finished difference. Result has 123 places, 58 transitions, 339 flow [2024-06-28 02:29:25,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=339, PETRI_PLACES=123, PETRI_TRANSITIONS=58} [2024-06-28 02:29:25,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-28 02:29:25,062 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 58 transitions, 339 flow [2024-06-28 02:29:25,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:25,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:25,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:25,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 02:29:25,063 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:25,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1058521711, now seen corresponding path program 31 times [2024-06-28 02:29:25,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:25,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506826186] [2024-06-28 02:29:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:25,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:26,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:26,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506826186] [2024-06-28 02:29:26,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506826186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:26,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:26,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:26,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48953010] [2024-06-28 02:29:26,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:26,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:26,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:26,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:26,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 58 transitions, 339 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:26,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:26,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:26,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:26,641 INFO L124 PetriNetUnfolderBase]: 151/325 cut-off events. [2024-06-28 02:29:26,641 INFO L125 PetriNetUnfolderBase]: For 15107/15107 co-relation queries the response was YES. [2024-06-28 02:29:26,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 325 events. 151/325 cut-off events. For 15107/15107 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1273 event pairs, 43 based on Foata normal form. 6/330 useless extension candidates. Maximal degree in co-relation 1338. Up to 243 conditions per place. [2024-06-28 02:29:26,643 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 43 selfloop transitions, 3 changer transitions 26/74 dead transitions. [2024-06-28 02:29:26,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 74 transitions, 519 flow [2024-06-28 02:29:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 02:29:26,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 02:29:26,643 INFO L175 Difference]: Start difference. First operand has 123 places, 58 transitions, 339 flow. Second operand 11 states and 100 transitions. [2024-06-28 02:29:26,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 74 transitions, 519 flow [2024-06-28 02:29:26,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 74 transitions, 491 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:26,656 INFO L231 Difference]: Finished difference. Result has 115 places, 47 transitions, 267 flow [2024-06-28 02:29:26,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=267, PETRI_PLACES=115, PETRI_TRANSITIONS=47} [2024-06-28 02:29:26,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-28 02:29:26,656 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 47 transitions, 267 flow [2024-06-28 02:29:26,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:26,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:26,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:26,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 02:29:26,657 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:26,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash 82533995, now seen corresponding path program 32 times [2024-06-28 02:29:26,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621623911] [2024-06-28 02:29:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:28,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621623911] [2024-06-28 02:29:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621623911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:28,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:28,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:29:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081335890] [2024-06-28 02:29:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:28,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:29:28,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:29:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:29:28,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:28,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 47 transitions, 267 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:28,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:28,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:28,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:28,395 INFO L124 PetriNetUnfolderBase]: 127/274 cut-off events. [2024-06-28 02:29:28,395 INFO L125 PetriNetUnfolderBase]: For 12929/12929 co-relation queries the response was YES. [2024-06-28 02:29:28,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 274 events. 127/274 cut-off events. For 12929/12929 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1029 event pairs, 37 based on Foata normal form. 6/279 useless extension candidates. Maximal degree in co-relation 1148. Up to 188 conditions per place. [2024-06-28 02:29:28,397 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 12 changer transitions 11/63 dead transitions. [2024-06-28 02:29:28,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 63 transitions, 423 flow [2024-06-28 02:29:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:28,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 02:29:28,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-28 02:29:28,397 INFO L175 Difference]: Start difference. First operand has 115 places, 47 transitions, 267 flow. Second operand 11 states and 104 transitions. [2024-06-28 02:29:28,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 63 transitions, 423 flow [2024-06-28 02:29:28,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 63 transitions, 393 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-28 02:29:28,406 INFO L231 Difference]: Finished difference. Result has 95 places, 44 transitions, 250 flow [2024-06-28 02:29:28,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=250, PETRI_PLACES=95, PETRI_TRANSITIONS=44} [2024-06-28 02:29:28,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 02:29:28,406 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 44 transitions, 250 flow [2024-06-28 02:29:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:28,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:28,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:28,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 02:29:28,407 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:28,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 82361015, now seen corresponding path program 33 times [2024-06-28 02:29:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007791847] [2024-06-28 02:29:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:28,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:29,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:29,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007791847] [2024-06-28 02:29:29,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007791847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:29,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:29,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:29,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542337497] [2024-06-28 02:29:29,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:29,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:29,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:29,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:29,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 44 transitions, 250 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:29,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:29,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:29,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:30,005 INFO L124 PetriNetUnfolderBase]: 117/256 cut-off events. [2024-06-28 02:29:30,005 INFO L125 PetriNetUnfolderBase]: For 7534/7534 co-relation queries the response was YES. [2024-06-28 02:29:30,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 256 events. 117/256 cut-off events. For 7534/7534 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 938 event pairs, 35 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 1010. Up to 178 conditions per place. [2024-06-28 02:29:30,006 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 34 selfloop transitions, 9 changer transitions 15/60 dead transitions. [2024-06-28 02:29:30,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 60 transitions, 400 flow [2024-06-28 02:29:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 02:29:30,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-28 02:29:30,007 INFO L175 Difference]: Start difference. First operand has 95 places, 44 transitions, 250 flow. Second operand 11 states and 103 transitions. [2024-06-28 02:29:30,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 60 transitions, 400 flow [2024-06-28 02:29:30,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 60 transitions, 370 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:30,013 INFO L231 Difference]: Finished difference. Result has 91 places, 39 transitions, 218 flow [2024-06-28 02:29:30,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=218, PETRI_PLACES=91, PETRI_TRANSITIONS=39} [2024-06-28 02:29:30,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-28 02:29:30,014 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 39 transitions, 218 flow [2024-06-28 02:29:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:30,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:30,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:30,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 02:29:30,014 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:30,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1439671991, now seen corresponding path program 34 times [2024-06-28 02:29:30,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:30,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112493303] [2024-06-28 02:29:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:30,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:31,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112493303] [2024-06-28 02:29:31,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112493303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:31,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:31,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635445275] [2024-06-28 02:29:31,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:31,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:31,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:31,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 39 transitions, 218 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:31,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:31,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:31,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:32,218 INFO L124 PetriNetUnfolderBase]: 89/196 cut-off events. [2024-06-28 02:29:32,219 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-06-28 02:29:32,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 196 events. 89/196 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 628 event pairs, 26 based on Foata normal form. 6/201 useless extension candidates. Maximal degree in co-relation 676. Up to 131 conditions per place. [2024-06-28 02:29:32,219 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 31 selfloop transitions, 7 changer transitions 13/53 dead transitions. [2024-06-28 02:29:32,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 53 transitions, 350 flow [2024-06-28 02:29:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-28 02:29:32,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-28 02:29:32,220 INFO L175 Difference]: Start difference. First operand has 91 places, 39 transitions, 218 flow. Second operand 11 states and 98 transitions. [2024-06-28 02:29:32,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 53 transitions, 350 flow [2024-06-28 02:29:32,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 53 transitions, 322 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:32,224 INFO L231 Difference]: Finished difference. Result has 83 places, 35 transitions, 187 flow [2024-06-28 02:29:32,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=187, PETRI_PLACES=83, PETRI_TRANSITIONS=35} [2024-06-28 02:29:32,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-28 02:29:32,224 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 35 transitions, 187 flow [2024-06-28 02:29:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:32,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:32,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:32,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 02:29:32,225 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:32,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:32,225 INFO L85 PathProgramCache]: Analyzing trace with hash 742234841, now seen corresponding path program 35 times [2024-06-28 02:29:32,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:32,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779287255] [2024-06-28 02:29:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779287255] [2024-06-28 02:29:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779287255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:33,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828894810] [2024-06-28 02:29:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:33,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:33,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 35 transitions, 187 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:33,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:33,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:33,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:34,091 INFO L124 PetriNetUnfolderBase]: 80/177 cut-off events. [2024-06-28 02:29:34,092 INFO L125 PetriNetUnfolderBase]: For 3160/3160 co-relation queries the response was YES. [2024-06-28 02:29:34,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 177 events. 80/177 cut-off events. For 3160/3160 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 535 event pairs, 20 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 590. Up to 88 conditions per place. [2024-06-28 02:29:34,092 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 24 selfloop transitions, 7 changer transitions 17/50 dead transitions. [2024-06-28 02:29:34,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 50 transitions, 315 flow [2024-06-28 02:29:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 02:29:34,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 02:29:34,093 INFO L175 Difference]: Start difference. First operand has 83 places, 35 transitions, 187 flow. Second operand 11 states and 99 transitions. [2024-06-28 02:29:34,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 50 transitions, 315 flow [2024-06-28 02:29:34,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 50 transitions, 293 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:34,096 INFO L231 Difference]: Finished difference. Result has 76 places, 29 transitions, 154 flow [2024-06-28 02:29:34,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=154, PETRI_PLACES=76, PETRI_TRANSITIONS=29} [2024-06-28 02:29:34,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-28 02:29:34,096 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 29 transitions, 154 flow [2024-06-28 02:29:34,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:34,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:34,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:34,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 02:29:34,096 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:34,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1800854199, now seen corresponding path program 36 times [2024-06-28 02:29:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980602342] [2024-06-28 02:29:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:35,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980602342] [2024-06-28 02:29:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980602342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:35,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:35,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534555380] [2024-06-28 02:29:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:35,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:35,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:35,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:35,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 29 transitions, 154 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:35,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:35,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:35,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:35,848 INFO L124 PetriNetUnfolderBase]: 66/147 cut-off events. [2024-06-28 02:29:35,848 INFO L125 PetriNetUnfolderBase]: For 2396/2396 co-relation queries the response was YES. [2024-06-28 02:29:35,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 147 events. 66/147 cut-off events. For 2396/2396 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 400 event pairs, 20 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 494. Up to 78 conditions per place. [2024-06-28 02:29:35,849 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 22 selfloop transitions, 8 changer transitions 11/43 dead transitions. [2024-06-28 02:29:35,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 43 transitions, 266 flow [2024-06-28 02:29:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 02:29:35,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2785923753665689 [2024-06-28 02:29:35,849 INFO L175 Difference]: Start difference. First operand has 76 places, 29 transitions, 154 flow. Second operand 11 states and 95 transitions. [2024-06-28 02:29:35,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 43 transitions, 266 flow [2024-06-28 02:29:35,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 43 transitions, 240 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:29:35,851 INFO L231 Difference]: Finished difference. Result has 66 places, 26 transitions, 133 flow [2024-06-28 02:29:35,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=133, PETRI_PLACES=66, PETRI_TRANSITIONS=26} [2024-06-28 02:29:35,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-06-28 02:29:35,852 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 26 transitions, 133 flow [2024-06-28 02:29:35,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:35,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:35,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:35,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 02:29:35,852 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:35,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1801027179, now seen corresponding path program 37 times [2024-06-28 02:29:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008582361] [2024-06-28 02:29:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008582361] [2024-06-28 02:29:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008582361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:37,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:37,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818597975] [2024-06-28 02:29:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:37,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:37,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:37,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:37,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:37,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 26 transitions, 133 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:37,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:37,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:37,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:37,670 INFO L124 PetriNetUnfolderBase]: 56/129 cut-off events. [2024-06-28 02:29:37,670 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2024-06-28 02:29:37,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 129 events. 56/129 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 325 event pairs, 18 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 418. Up to 60 conditions per place. [2024-06-28 02:29:37,671 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 6 changer transitions 14/40 dead transitions. [2024-06-28 02:29:37,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 40 transitions, 239 flow [2024-06-28 02:29:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-06-28 02:29:37,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2756598240469208 [2024-06-28 02:29:37,672 INFO L175 Difference]: Start difference. First operand has 66 places, 26 transitions, 133 flow. Second operand 11 states and 94 transitions. [2024-06-28 02:29:37,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 40 transitions, 239 flow [2024-06-28 02:29:37,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 40 transitions, 217 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:37,673 INFO L231 Difference]: Finished difference. Result has 62 places, 22 transitions, 108 flow [2024-06-28 02:29:37,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=108, PETRI_PLACES=62, PETRI_TRANSITIONS=22} [2024-06-28 02:29:37,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 02:29:37,673 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 22 transitions, 108 flow [2024-06-28 02:29:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:37,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:37,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:37,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 02:29:37,674 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:29:37,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash -419418151, now seen corresponding path program 38 times [2024-06-28 02:29:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961348014] [2024-06-28 02:29:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:39,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961348014] [2024-06-28 02:29:39,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961348014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:39,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:39,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:29:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396781281] [2024-06-28 02:29:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:39,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:29:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:29:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:29:39,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 02:29:39,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 22 transitions, 108 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:39,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:39,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 02:29:39,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:39,597 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-28 02:29:39,597 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2024-06-28 02:29:39,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 70 events. 27/70 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 1 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 182. Up to 24 conditions per place. [2024-06-28 02:29:39,597 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-28 02:29:39,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 31 transitions, 158 flow [2024-06-28 02:29:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:29:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:29:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 85 transitions. [2024-06-28 02:29:39,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24926686217008798 [2024-06-28 02:29:39,598 INFO L175 Difference]: Start difference. First operand has 62 places, 22 transitions, 108 flow. Second operand 11 states and 85 transitions. [2024-06-28 02:29:39,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 31 transitions, 158 flow [2024-06-28 02:29:39,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-28 02:29:39,598 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-28 02:29:39,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-06-28 02:29:39,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-28 02:29:39,599 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-28 02:29:39,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:29:39,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:29:39,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:29:39,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:29:39,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:29:39,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 02:29:39,602 INFO L445 BasicCegarLoop]: Path program histogram: [41, 38, 25, 24, 15, 14, 14, 9, 8, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:29:39,604 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:29:39,604 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:29:39,607 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:29:39,607 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:29:39,608 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:29:39 BasicIcfg [2024-06-28 02:29:39,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:29:39,608 INFO L158 Benchmark]: Toolchain (without parser) took 456778.19ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 99.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 495.9MB. Max. memory is 16.1GB. [2024-06-28 02:29:39,609 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:29:39,609 INFO L158 Benchmark]: Witness Parser took 0.07ms. Allocated memory is still 178.3MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:29:39,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.48ms. Allocated memory is still 178.3MB. Free memory was 99.2MB in the beginning and 62.9MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-28 02:29:39,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.10ms. Allocated memory is still 178.3MB. Free memory was 62.9MB in the beginning and 144.9MB in the end (delta: -82.0MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2024-06-28 02:29:39,609 INFO L158 Benchmark]: Boogie Preprocessor took 38.75ms. Allocated memory is still 178.3MB. Free memory was 144.9MB in the beginning and 140.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:29:39,610 INFO L158 Benchmark]: RCFGBuilder took 685.77ms. Allocated memory is still 178.3MB. Free memory was 140.7MB in the beginning and 73.6MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-06-28 02:29:39,610 INFO L158 Benchmark]: TraceAbstraction took 455415.61ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 72.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 466.7MB. Max. memory is 16.1GB. [2024-06-28 02:29:39,611 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.07ms. Allocated memory is still 178.3MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.48ms. Allocated memory is still 178.3MB. Free memory was 99.2MB in the beginning and 62.9MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.10ms. Allocated memory is still 178.3MB. Free memory was 62.9MB in the beginning and 144.9MB in the end (delta: -82.0MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.75ms. Allocated memory is still 178.3MB. Free memory was 144.9MB in the beginning and 140.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 685.77ms. Allocated memory is still 178.3MB. Free memory was 140.7MB in the beginning and 73.6MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * TraceAbstraction took 455415.61ms. Allocated memory was 178.3MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 72.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 466.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 455.3s, OverallIterations: 245, TraceHistogramMax: 1, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.0s, AutomataDifference: 198.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13252 SdHoareTripleChecker+Valid, 57.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11463 mSDsluCounter, 11655 SdHoareTripleChecker+Invalid, 50.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9969 mSDsCounter, 2963 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94363 IncrementalHoareTripleChecker+Invalid, 97326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2963 mSolverCounterUnsat, 1686 mSDtfsCounter, 94363 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2816 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2795 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5713 ImplicationChecksByTransitivity, 74.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4116occurred in iteration=129, InterpolantAutomatonStates: 2403, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 253.3s InterpolantComputationTime, 4126 NumberOfCodeBlocks, 4126 NumberOfCodeBlocksAsserted, 245 NumberOfCheckSat, 3881 ConstructedInterpolants, 0 QuantifiedInterpolants, 180730 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 245 InterpolantComputations, 245 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:29:39,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE