./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_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/protection/rfi002_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/rfi002_tso.i ./goblint.2024-06-19_11-23-25.files/protection/rfi002_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-eb4cb34-m [2024-06-21 15:43:02,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 15:43:02,122 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 15:43:02,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 15:43:02,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 15:43:02,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 15:43:02,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 15:43:02,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 15:43:02,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 15:43:02,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 15:43:02,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 15:43:02,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 15:43:02,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 15:43:02,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 15:43:02,158 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 15:43:02,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 15:43:02,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 15:43:02,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 15:43:02,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 15:43:02,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 15:43:02,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 15:43:02,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 15:43:02,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 15:43:02,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 15:43:02,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 15:43:02,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 15:43:02,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 15:43:02,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 15:43:02,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 15:43:02,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 15:43:02,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 15:43:02,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 15:43:02,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 15:43:02,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 15:43:02,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 15:43:02,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 15:43:02,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 15:43:02,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 15:43:02,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 15:43:02,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 15:43:02,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 15:43:02,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 15:43:02,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 15:43:02,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 15:43:02,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 15:43:02,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 15:43:02,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 15:43:02,400 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 15:43:02,400 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 15:43:02,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi002_tso.yml/witness.yml [2024-06-21 15:43:02,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 15:43:02,589 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 15:43:02,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-21 15:43:03,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 15:43:03,814 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 15:43:03,814 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-21 15:43:03,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beda363c6/b4d01d050b8040daa7d67be43e156ae0/FLAG14f9630d7 [2024-06-21 15:43:03,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beda363c6/b4d01d050b8040daa7d67be43e156ae0 [2024-06-21 15:43:03,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 15:43:03,850 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 15:43:03,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 15:43:03,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 15:43:03,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 15:43:03,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:43:02" (1/2) ... [2024-06-21 15:43:03,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d62f5f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:03, skipping insertion in model container [2024-06-21 15:43:03,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:43:02" (1/2) ... [2024-06-21 15:43:03,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36b7bfeb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 03:43:03, skipping insertion in model container [2024-06-21 15:43:03,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 03:43:03" (2/2) ... [2024-06-21 15:43:03,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d62f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:03, skipping insertion in model container [2024-06-21 15:43:03,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 03:43:03" (2/2) ... [2024-06-21 15:43:03,860 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 15:43:03,936 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 15:43:03,937 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-21 15:43:03,937 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-21 15:43:03,937 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 15:43:03,937 INFO L106 edCorrectnessWitness]: ghost_update [L877-L877] multithreaded = 1; [2024-06-21 15:43:03,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 15:43:04,390 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 15:43:04,406 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 15:43:04,493 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 15:43:04,524 INFO L206 MainTranslator]: Completed translation [2024-06-21 15:43:04,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04 WrapperNode [2024-06-21 15:43:04,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 15:43:04,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 15:43:04,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 15:43:04,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 15:43:04,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,594 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 217 [2024-06-21 15:43:04,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 15:43:04,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 15:43:04,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 15:43:04,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 15:43:04,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,640 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]. [2024-06-21 15:43:04,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 15:43:04,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 15:43:04,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 15:43:04,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 15:43:04,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (1/1) ... [2024-06-21 15:43:04,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 15:43:04,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 15:43:04,743 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) [2024-06-21 15:43:04,745 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 [2024-06-21 15:43:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 15:43:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 15:43:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 15:43:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 15:43:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 15:43:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 15:43:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 15:43:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 15:43:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 15:43:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 15:43:04,775 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 15:43:04,878 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 15:43:04,880 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 15:43:05,314 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 15:43:05,315 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 15:43:05,512 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 15:43:05,512 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 15:43:05,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 03:43:05 BoogieIcfgContainer [2024-06-21 15:43:05,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 15:43:05,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 15:43:05,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 15:43:05,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 15:43:05,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 03:43:02" (1/4) ... [2024-06-21 15:43:05,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc73081 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 03:43:05, skipping insertion in model container [2024-06-21 15:43:05,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 03:43:03" (2/4) ... [2024-06-21 15:43:05,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc73081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 03:43:05, skipping insertion in model container [2024-06-21 15:43:05,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 03:43:04" (3/4) ... [2024-06-21 15:43:05,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc73081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 03:43:05, skipping insertion in model container [2024-06-21 15:43:05,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 03:43:05" (4/4) ... [2024-06-21 15:43:05,523 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2024-06-21 15:43:05,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 15:43:05,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 15:43:05,553 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 15:43:05,605 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 15:43:05,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 15:43:05,657 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 15:43:05,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 15:43:05,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 15:43:05,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 15:43:05,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 15:43:05,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 15:43:05,682 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;@3f9b3d37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 15:43:05,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 15:43:05,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 15:43:05,686 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 15:43:05,686 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 15:43:05,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:05,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 15:43:05,687 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)] === [2024-06-21 15:43:05,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash 541946621, now seen corresponding path program 1 times [2024-06-21 15:43:05,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589604468] [2024-06-21 15:43:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:07,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:07,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589604468] [2024-06-21 15:43:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589604468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:07,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 15:43:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081902849] [2024-06-21 15:43:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:07,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 15:43:07,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:07,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 15:43:07,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 15:43:07,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 15:43:07,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 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) [2024-06-21 15:43:07,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:07,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 15:43:07,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:07,237 INFO L124 PetriNetUnfolderBase]: 257/455 cut-off events. [2024-06-21 15:43:07,238 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-21 15:43:07,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 455 events. 257/455 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1664 event pairs, 163 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 916. Up to 447 conditions per place. [2024-06-21 15:43:07,243 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 24 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 15:43:07,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 123 flow [2024-06-21 15:43:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 15:43:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 15:43:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-21 15:43:07,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-21 15:43:07,253 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 50 transitions. [2024-06-21 15:43:07,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 123 flow [2024-06-21 15:43:07,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:07,257 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 15:43:07,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-21 15:43:07,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 15:43:07,261 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 15:43:07,261 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) [2024-06-21 15:43:07,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:07,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 15:43:07,262 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)] === [2024-06-21 15:43:07,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1120352910, now seen corresponding path program 1 times [2024-06-21 15:43:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:07,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482036941] [2024-06-21 15:43:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:07,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:08,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:08,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482036941] [2024-06-21 15:43:08,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482036941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:08,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:08,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 15:43:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199121158] [2024-06-21 15:43:08,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:08,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 15:43:08,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 15:43:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 15:43:08,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 15:43:08,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 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) [2024-06-21 15:43:08,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:08,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 15:43:08,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:08,229 INFO L124 PetriNetUnfolderBase]: 251/445 cut-off events. [2024-06-21 15:43:08,230 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-06-21 15:43:08,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 445 events. 251/445 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1599 event pairs, 115 based on Foata normal form. 4/448 useless extension candidates. Maximal degree in co-relation 1004. Up to 419 conditions per place. [2024-06-21 15:43:08,232 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-21 15:43:08,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2024-06-21 15:43:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 15:43:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 15:43:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-06-21 15:43:08,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 15:43:08,234 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 64 transitions. [2024-06-21 15:43:08,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2024-06-21 15:43:08,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 15:43:08,236 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 15:43:08,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 15:43:08,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 15:43:08,236 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 15:43:08,237 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) [2024-06-21 15:43:08,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:08,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:08,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 15:43:08,237 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)] === [2024-06-21 15:43:08,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1377612947, now seen corresponding path program 1 times [2024-06-21 15:43:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721178237] [2024-06-21 15:43:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:09,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:09,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721178237] [2024-06-21 15:43:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721178237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:09,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 15:43:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536930784] [2024-06-21 15:43:09,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:09,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 15:43:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:09,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 15:43:09,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 15:43:09,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 15:43:09,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:09,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:09,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 15:43:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:10,147 INFO L124 PetriNetUnfolderBase]: 245/435 cut-off events. [2024-06-21 15:43:10,147 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-06-21 15:43:10,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 435 events. 245/435 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1554 event pairs, 67 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 1080. Up to 391 conditions per place. [2024-06-21 15:43:10,150 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-06-21 15:43:10,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 221 flow [2024-06-21 15:43:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:43:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:43:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-21 15:43:10,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-21 15:43:10,151 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-21 15:43:10,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 221 flow [2024-06-21 15:43:10,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 212 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:10,153 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-21 15:43:10,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 15:43:10,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 15:43:10,154 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-21 15:43:10,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:43:10,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:10,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:10,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 15:43:10,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:43:10,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1633867756, now seen corresponding path program 1 times [2024-06-21 15:43:10,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:10,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806446156] [2024-06-21 15:43:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:10,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:10,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:10,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806446156] [2024-06-21 15:43:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806446156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:10,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:10,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 15:43:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502238695] [2024-06-21 15:43:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:10,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 15:43:10,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:10,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 15:43:10,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 15:43:10,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:10,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 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) [2024-06-21 15:43:10,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:10,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:10,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:11,202 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-21 15:43:11,202 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-06-21 15:43:11,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 432 events. 243/432 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1540 event pairs, 108 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1169. Up to 421 conditions per place. [2024-06-21 15:43:11,206 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-21 15:43:11,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 209 flow [2024-06-21 15:43:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 15:43:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 15:43:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-21 15:43:11,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 15:43:11,209 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 57 transitions. [2024-06-21 15:43:11,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 209 flow [2024-06-21 15:43:11,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 15:43:11,212 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-21 15:43:11,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-21 15:43:11,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-21 15:43:11,214 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-21 15:43:11,214 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) [2024-06-21 15:43:11,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:11,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 15:43:11,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 15:43:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:11,217 INFO L85 PathProgramCache]: Analyzing trace with hash 766702362, now seen corresponding path program 1 times [2024-06-21 15:43:11,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:11,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159926643] [2024-06-21 15:43:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:13,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:13,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159926643] [2024-06-21 15:43:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159926643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:13,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:13,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:13,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572620879] [2024-06-21 15:43:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:13,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:13,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 15:43:13,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-21 15:43:13,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:13,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 15:43:13,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:13,970 INFO L124 PetriNetUnfolderBase]: 239/424 cut-off events. [2024-06-21 15:43:13,970 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-06-21 15:43:13,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 424 events. 239/424 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1483 event pairs, 41 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1206. Up to 362 conditions per place. [2024-06-21 15:43:13,972 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-21 15:43:13,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 251 flow [2024-06-21 15:43:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-21 15:43:13,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 15:43:13,974 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 6 states and 86 transitions. [2024-06-21 15:43:13,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 251 flow [2024-06-21 15:43:13,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 240 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 15:43:13,976 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 134 flow [2024-06-21 15:43:13,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-21 15:43:13,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-21 15:43:13,977 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 134 flow [2024-06-21 15:43:13,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-21 15:43:13,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:13,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:13,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 15:43:13,978 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)] === [2024-06-21 15:43:13,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:13,978 INFO L85 PathProgramCache]: Analyzing trace with hash -889705425, now seen corresponding path program 1 times [2024-06-21 15:43:13,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:13,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145047595] [2024-06-21 15:43:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:13,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145047595] [2024-06-21 15:43:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145047595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:15,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:43:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491867906] [2024-06-21 15:43:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:15,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:43:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:15,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:43:15,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:43:15,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:15,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 134 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) [2024-06-21 15:43:15,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:15,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:15,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:15,404 INFO L124 PetriNetUnfolderBase]: 237/421 cut-off events. [2024-06-21 15:43:15,404 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-06-21 15:43:15,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 421 events. 237/421 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 103 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1263. Up to 407 conditions per place. [2024-06-21 15:43:15,407 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-21 15:43:15,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 230 flow [2024-06-21 15:43:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-21 15:43:15,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 15:43:15,409 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 134 flow. Second operand 6 states and 64 transitions. [2024-06-21 15:43:15,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 230 flow [2024-06-21 15:43:15,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 210 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:15,413 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 147 flow [2024-06-21 15:43:15,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-21 15:43:15,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-21 15:43:15,415 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 147 flow [2024-06-21 15:43:15,415 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) [2024-06-21 15:43:15,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:15,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 15:43:15,416 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)] === [2024-06-21 15:43:15,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash -332448531, now seen corresponding path program 1 times [2024-06-21 15:43:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344406307] [2024-06-21 15:43:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:16,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:16,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344406307] [2024-06-21 15:43:16,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344406307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:16,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:16,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:43:16,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21411397] [2024-06-21 15:43:16,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:16,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:43:16,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:16,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:43:16,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:43:16,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:16,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 147 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) [2024-06-21 15:43:16,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:16,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:16,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:16,722 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-21 15:43:16,722 INFO L125 PetriNetUnfolderBase]: For 1082/1085 co-relation queries the response was YES. [2024-06-21 15:43:16,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 432 events. 243/432 cut-off events. For 1082/1085 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1523 event pairs, 85 based on Foata normal form. 4/434 useless extension candidates. Maximal degree in co-relation 1353. Up to 399 conditions per place. [2024-06-21 15:43:16,761 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 35 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-21 15:43:16,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 275 flow [2024-06-21 15:43:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-21 15:43:16,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 15:43:16,762 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 147 flow. Second operand 6 states and 69 transitions. [2024-06-21 15:43:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 275 flow [2024-06-21 15:43:16,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 258 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:16,764 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 178 flow [2024-06-21 15:43:16,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-21 15:43:16,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-21 15:43:16,765 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 178 flow [2024-06-21 15:43:16,765 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) [2024-06-21 15:43:16,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:16,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:16,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 15:43:16,765 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)] === [2024-06-21 15:43:16,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash -896785815, now seen corresponding path program 2 times [2024-06-21 15:43:16,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:16,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473984500] [2024-06-21 15:43:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:16,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473984500] [2024-06-21 15:43:17,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473984500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:17,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:17,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 15:43:17,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225775704] [2024-06-21 15:43:17,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:17,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 15:43:17,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 15:43:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 15:43:17,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:17,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 178 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) [2024-06-21 15:43:17,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:17,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:17,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:18,057 INFO L124 PetriNetUnfolderBase]: 244/435 cut-off events. [2024-06-21 15:43:18,057 INFO L125 PetriNetUnfolderBase]: For 1463/1466 co-relation queries the response was YES. [2024-06-21 15:43:18,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 435 events. 244/435 cut-off events. For 1463/1466 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1551 event pairs, 88 based on Foata normal form. 4/436 useless extension candidates. Maximal degree in co-relation 1488. Up to 388 conditions per place. [2024-06-21 15:43:18,060 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 14 changer transitions 0/50 dead transitions. [2024-06-21 15:43:18,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 336 flow [2024-06-21 15:43:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-21 15:43:18,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 15:43:18,064 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 178 flow. Second operand 6 states and 70 transitions. [2024-06-21 15:43:18,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 336 flow [2024-06-21 15:43:18,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:18,067 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 227 flow [2024-06-21 15:43:18,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-21 15:43:18,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-21 15:43:18,073 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 227 flow [2024-06-21 15:43:18,073 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) [2024-06-21 15:43:18,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:18,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:18,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 15:43:18,074 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)] === [2024-06-21 15:43:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1811062677, now seen corresponding path program 1 times [2024-06-21 15:43:18,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:18,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325629283] [2024-06-21 15:43:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:18,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:19,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325629283] [2024-06-21 15:43:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325629283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:19,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:19,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136501250] [2024-06-21 15:43:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:19,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:19,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:19,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 227 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) [2024-06-21 15:43:19,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:19,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:19,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:19,623 INFO L124 PetriNetUnfolderBase]: 242/430 cut-off events. [2024-06-21 15:43:19,623 INFO L125 PetriNetUnfolderBase]: For 1835/1835 co-relation queries the response was YES. [2024-06-21 15:43:19,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 430 events. 242/430 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1530 event pairs, 80 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1563. Up to 413 conditions per place. [2024-06-21 15:43:19,626 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-21 15:43:19,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 349 flow [2024-06-21 15:43:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-21 15:43:19,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-21 15:43:19,628 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 227 flow. Second operand 7 states and 72 transitions. [2024-06-21 15:43:19,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 349 flow [2024-06-21 15:43:19,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 334 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 15:43:19,632 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 251 flow [2024-06-21 15:43:19,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-06-21 15:43:19,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-21 15:43:19,633 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 251 flow [2024-06-21 15:43:19,634 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) [2024-06-21 15:43:19,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:19,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:19,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 15:43:19,634 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)] === [2024-06-21 15:43:19,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -515302453, now seen corresponding path program 1 times [2024-06-21 15:43:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:19,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810926730] [2024-06-21 15:43:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:19,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:20,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:20,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810926730] [2024-06-21 15:43:20,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810926730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:20,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:20,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151139101] [2024-06-21 15:43:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:20,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:20,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 251 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) [2024-06-21 15:43:20,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:20,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:20,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:21,313 INFO L124 PetriNetUnfolderBase]: 240/427 cut-off events. [2024-06-21 15:43:21,314 INFO L125 PetriNetUnfolderBase]: For 2146/2146 co-relation queries the response was YES. [2024-06-21 15:43:21,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 427 events. 240/427 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1517 event pairs, 79 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 1628. Up to 392 conditions per place. [2024-06-21 15:43:21,317 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 40 selfloop transitions, 11 changer transitions 0/53 dead transitions. [2024-06-21 15:43:21,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 379 flow [2024-06-21 15:43:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 15:43:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 15:43:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-21 15:43:21,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 15:43:21,319 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 251 flow. Second operand 6 states and 69 transitions. [2024-06-21 15:43:21,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 379 flow [2024-06-21 15:43:21,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 354 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:21,322 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 256 flow [2024-06-21 15:43:21,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-06-21 15:43:21,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-21 15:43:21,323 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 256 flow [2024-06-21 15:43:21,323 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) [2024-06-21 15:43:21,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:21,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:21,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 15:43:21,324 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)] === [2024-06-21 15:43:21,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash -515296656, now seen corresponding path program 1 times [2024-06-21 15:43:21,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:21,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446302954] [2024-06-21 15:43:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:21,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446302954] [2024-06-21 15:43:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446302954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:22,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:22,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923368361] [2024-06-21 15:43:22,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:22,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:22,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:22,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 256 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) [2024-06-21 15:43:22,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:22,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:22,905 INFO L124 PetriNetUnfolderBase]: 246/438 cut-off events. [2024-06-21 15:43:22,905 INFO L125 PetriNetUnfolderBase]: For 2641/2644 co-relation queries the response was YES. [2024-06-21 15:43:22,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 438 events. 246/438 cut-off events. For 2641/2644 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1546 event pairs, 82 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 1716. Up to 397 conditions per place. [2024-06-21 15:43:22,908 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-21 15:43:22,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 410 flow [2024-06-21 15:43:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 15:43:22,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-21 15:43:22,911 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 256 flow. Second operand 7 states and 78 transitions. [2024-06-21 15:43:22,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 410 flow [2024-06-21 15:43:22,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 383 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:22,914 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 274 flow [2024-06-21 15:43:22,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-21 15:43:22,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-21 15:43:22,915 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 274 flow [2024-06-21 15:43:22,915 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) [2024-06-21 15:43:22,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:22,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:22,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 15:43:22,915 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)] === [2024-06-21 15:43:22,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:22,916 INFO L85 PathProgramCache]: Analyzing trace with hash -308376306, now seen corresponding path program 2 times [2024-06-21 15:43:22,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:22,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984614003] [2024-06-21 15:43:22,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:22,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:24,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984614003] [2024-06-21 15:43:24,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984614003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:24,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:24,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819926903] [2024-06-21 15:43:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:24,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:24,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:24,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 274 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) [2024-06-21 15:43:24,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:24,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:24,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:24,484 INFO L124 PetriNetUnfolderBase]: 252/449 cut-off events. [2024-06-21 15:43:24,484 INFO L125 PetriNetUnfolderBase]: For 3220/3223 co-relation queries the response was YES. [2024-06-21 15:43:24,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 449 events. 252/449 cut-off events. For 3220/3223 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1625 event pairs, 81 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1844. Up to 373 conditions per place. [2024-06-21 15:43:24,487 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 21 changer transitions 0/60 dead transitions. [2024-06-21 15:43:24,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 474 flow [2024-06-21 15:43:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:24,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 15:43:24,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-21 15:43:24,488 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 274 flow. Second operand 7 states and 80 transitions. [2024-06-21 15:43:24,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 474 flow [2024-06-21 15:43:24,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 445 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:24,492 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 328 flow [2024-06-21 15:43:24,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-21 15:43:24,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-21 15:43:24,493 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 328 flow [2024-06-21 15:43:24,493 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) [2024-06-21 15:43:24,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:24,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:24,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 15:43:24,494 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)] === [2024-06-21 15:43:24,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash -308643216, now seen corresponding path program 3 times [2024-06-21 15:43:24,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052045886] [2024-06-21 15:43:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052045886] [2024-06-21 15:43:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052045886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456075487] [2024-06-21 15:43:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:25,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:25,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 328 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) [2024-06-21 15:43:25,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:25,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:25,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:25,926 INFO L124 PetriNetUnfolderBase]: 253/451 cut-off events. [2024-06-21 15:43:25,926 INFO L125 PetriNetUnfolderBase]: For 3734/3737 co-relation queries the response was YES. [2024-06-21 15:43:25,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 451 events. 253/451 cut-off events. For 3734/3737 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1641 event pairs, 86 based on Foata normal form. 4/452 useless extension candidates. Maximal degree in co-relation 1940. Up to 397 conditions per place. [2024-06-21 15:43:25,929 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-21 15:43:25,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 494 flow [2024-06-21 15:43:25,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 15:43:25,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-21 15:43:25,931 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 328 flow. Second operand 7 states and 78 transitions. [2024-06-21 15:43:25,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 494 flow [2024-06-21 15:43:25,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 461 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 15:43:25,934 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 356 flow [2024-06-21 15:43:25,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2024-06-21 15:43:25,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-21 15:43:25,935 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 356 flow [2024-06-21 15:43:25,935 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) [2024-06-21 15:43:25,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:25,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:25,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 15:43:25,936 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)] === [2024-06-21 15:43:25,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:25,936 INFO L85 PathProgramCache]: Analyzing trace with hash -308366386, now seen corresponding path program 1 times [2024-06-21 15:43:25,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:25,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759572302] [2024-06-21 15:43:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:25,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:27,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759572302] [2024-06-21 15:43:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759572302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:27,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:27,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:27,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867140389] [2024-06-21 15:43:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:27,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:27,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:27,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:27,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 356 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) [2024-06-21 15:43:27,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:27,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:27,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:28,129 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-06-21 15:43:28,129 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-06-21 15:43:28,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 446 events. 251/446 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1621 event pairs, 81 based on Foata normal form. 1/446 useless extension candidates. Maximal degree in co-relation 1980. Up to 426 conditions per place. [2024-06-21 15:43:28,132 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2024-06-21 15:43:28,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 504 flow [2024-06-21 15:43:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-21 15:43:28,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-21 15:43:28,133 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 356 flow. Second operand 8 states and 80 transitions. [2024-06-21 15:43:28,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 504 flow [2024-06-21 15:43:28,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 61 transitions, 465 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:28,136 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 362 flow [2024-06-21 15:43:28,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-21 15:43:28,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-21 15:43:28,137 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 362 flow [2024-06-21 15:43:28,138 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) [2024-06-21 15:43:28,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:28,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:28,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 15:43:28,138 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)] === [2024-06-21 15:43:28,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1200906026, now seen corresponding path program 1 times [2024-06-21 15:43:28,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:28,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476247922] [2024-06-21 15:43:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:28,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:29,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:29,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476247922] [2024-06-21 15:43:29,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476247922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:29,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:29,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404411610] [2024-06-21 15:43:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:29,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:29,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 362 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) [2024-06-21 15:43:29,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:29,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:29,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:29,943 INFO L124 PetriNetUnfolderBase]: 257/456 cut-off events. [2024-06-21 15:43:29,944 INFO L125 PetriNetUnfolderBase]: For 4624/4624 co-relation queries the response was YES. [2024-06-21 15:43:29,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 456 events. 257/456 cut-off events. For 4624/4624 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1646 event pairs, 59 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2063. Up to 404 conditions per place. [2024-06-21 15:43:29,946 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 57 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-21 15:43:29,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 546 flow [2024-06-21 15:43:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:29,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-21 15:43:29,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-21 15:43:29,948 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 362 flow. Second operand 7 states and 81 transitions. [2024-06-21 15:43:29,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 546 flow [2024-06-21 15:43:29,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 517 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:29,951 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 376 flow [2024-06-21 15:43:29,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-06-21 15:43:29,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-21 15:43:29,953 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 376 flow [2024-06-21 15:43:29,953 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) [2024-06-21 15:43:29,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:29,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 15:43:29,954 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)] === [2024-06-21 15:43:29,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1201026182, now seen corresponding path program 1 times [2024-06-21 15:43:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:29,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223131241] [2024-06-21 15:43:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:31,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223131241] [2024-06-21 15:43:31,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223131241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:31,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:31,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:31,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839979599] [2024-06-21 15:43:31,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:31,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:31,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:31,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:31,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 376 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) [2024-06-21 15:43:31,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:31,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:31,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:31,721 INFO L124 PetriNetUnfolderBase]: 255/453 cut-off events. [2024-06-21 15:43:31,722 INFO L125 PetriNetUnfolderBase]: For 5057/5057 co-relation queries the response was YES. [2024-06-21 15:43:31,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 453 events. 255/453 cut-off events. For 5057/5057 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1636 event pairs, 76 based on Foata normal form. 1/453 useless extension candidates. Maximal degree in co-relation 2116. Up to 407 conditions per place. [2024-06-21 15:43:31,724 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-21 15:43:31,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 538 flow [2024-06-21 15:43:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 15:43:31,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-21 15:43:31,726 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 376 flow. Second operand 7 states and 78 transitions. [2024-06-21 15:43:31,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 538 flow [2024-06-21 15:43:31,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 507 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:31,734 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 383 flow [2024-06-21 15:43:31,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-21 15:43:31,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-21 15:43:31,735 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 383 flow [2024-06-21 15:43:31,735 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) [2024-06-21 15:43:31,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:31,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:31,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 15:43:31,735 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)] === [2024-06-21 15:43:31,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1205494646, now seen corresponding path program 2 times [2024-06-21 15:43:31,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:31,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381971369] [2024-06-21 15:43:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:33,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381971369] [2024-06-21 15:43:33,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381971369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:33,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:33,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:33,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777499389] [2024-06-21 15:43:33,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:33,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:33,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:33,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 383 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) [2024-06-21 15:43:33,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:33,577 INFO L124 PetriNetUnfolderBase]: 261/463 cut-off events. [2024-06-21 15:43:33,577 INFO L125 PetriNetUnfolderBase]: For 5893/5893 co-relation queries the response was YES. [2024-06-21 15:43:33,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 463 events. 261/463 cut-off events. For 5893/5893 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1682 event pairs, 56 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 2198. Up to 394 conditions per place. [2024-06-21 15:43:33,580 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 53 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2024-06-21 15:43:33,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 571 flow [2024-06-21 15:43:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-21 15:43:33,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-21 15:43:33,581 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 383 flow. Second operand 7 states and 82 transitions. [2024-06-21 15:43:33,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 571 flow [2024-06-21 15:43:33,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 529 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:33,587 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 399 flow [2024-06-21 15:43:33,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-21 15:43:33,588 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-21 15:43:33,588 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 399 flow [2024-06-21 15:43:33,588 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) [2024-06-21 15:43:33,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:33,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:33,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 15:43:33,589 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)] === [2024-06-21 15:43:33,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1655404244, now seen corresponding path program 1 times [2024-06-21 15:43:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132409439] [2024-06-21 15:43:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:35,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132409439] [2024-06-21 15:43:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132409439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:35,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:35,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078624840] [2024-06-21 15:43:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:35,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:35,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:35,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:35,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:35,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 399 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) [2024-06-21 15:43:35,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:35,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:35,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:35,458 INFO L124 PetriNetUnfolderBase]: 267/474 cut-off events. [2024-06-21 15:43:35,458 INFO L125 PetriNetUnfolderBase]: For 6682/6685 co-relation queries the response was YES. [2024-06-21 15:43:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 474 events. 267/474 cut-off events. For 6682/6685 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1734 event pairs, 79 based on Foata normal form. 4/476 useless extension candidates. Maximal degree in co-relation 2309. Up to 425 conditions per place. [2024-06-21 15:43:35,461 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-06-21 15:43:35,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 595 flow [2024-06-21 15:43:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 15:43:35,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-21 15:43:35,481 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 399 flow. Second operand 8 states and 87 transitions. [2024-06-21 15:43:35,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 595 flow [2024-06-21 15:43:35,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 73 transitions, 555 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:35,487 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 412 flow [2024-06-21 15:43:35,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=412, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-21 15:43:35,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-21 15:43:35,488 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 412 flow [2024-06-21 15:43:35,490 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) [2024-06-21 15:43:35,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:35,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:35,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 15:43:35,490 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)] === [2024-06-21 15:43:35,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1482921298, now seen corresponding path program 3 times [2024-06-21 15:43:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:35,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249584728] [2024-06-21 15:43:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:35,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:36,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:36,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249584728] [2024-06-21 15:43:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249584728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:36,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:36,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 15:43:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911851333] [2024-06-21 15:43:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:36,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 15:43:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 15:43:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 15:43:37,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:37,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 412 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) [2024-06-21 15:43:37,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:37,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:37,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:37,380 INFO L124 PetriNetUnfolderBase]: 263/469 cut-off events. [2024-06-21 15:43:37,380 INFO L125 PetriNetUnfolderBase]: For 7082/7085 co-relation queries the response was YES. [2024-06-21 15:43:37,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 469 events. 263/469 cut-off events. For 7082/7085 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1726 event pairs, 68 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2310. Up to 383 conditions per place. [2024-06-21 15:43:37,384 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 52 selfloop transitions, 19 changer transitions 0/73 dead transitions. [2024-06-21 15:43:37,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 73 transitions, 604 flow [2024-06-21 15:43:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 15:43:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 15:43:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-21 15:43:37,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-21 15:43:37,385 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 412 flow. Second operand 7 states and 82 transitions. [2024-06-21 15:43:37,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 73 transitions, 604 flow [2024-06-21 15:43:37,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 567 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:37,390 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 442 flow [2024-06-21 15:43:37,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-06-21 15:43:37,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-21 15:43:37,391 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 442 flow [2024-06-21 15:43:37,391 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) [2024-06-21 15:43:37,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:37,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 15:43:37,392 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)] === [2024-06-21 15:43:37,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash -978003382, now seen corresponding path program 2 times [2024-06-21 15:43:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:37,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684296657] [2024-06-21 15:43:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:38,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:38,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684296657] [2024-06-21 15:43:38,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684296657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:38,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870655560] [2024-06-21 15:43:38,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:38,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:38,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:38,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:38,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 442 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) [2024-06-21 15:43:38,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:38,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:38,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:39,240 INFO L124 PetriNetUnfolderBase]: 269/479 cut-off events. [2024-06-21 15:43:39,240 INFO L125 PetriNetUnfolderBase]: For 7889/7892 co-relation queries the response was YES. [2024-06-21 15:43:39,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 479 events. 269/479 cut-off events. For 7889/7892 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1771 event pairs, 80 based on Foata normal form. 4/480 useless extension candidates. Maximal degree in co-relation 2421. Up to 417 conditions per place. [2024-06-21 15:43:39,243 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-06-21 15:43:39,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 642 flow [2024-06-21 15:43:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 15:43:39,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-21 15:43:39,245 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 442 flow. Second operand 8 states and 87 transitions. [2024-06-21 15:43:39,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 642 flow [2024-06-21 15:43:39,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 591 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 15:43:39,251 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 456 flow [2024-06-21 15:43:39,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=456, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-06-21 15:43:39,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-21 15:43:39,251 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 456 flow [2024-06-21 15:43:39,251 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) [2024-06-21 15:43:39,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:39,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 15:43:39,252 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)] === [2024-06-21 15:43:39,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash -969432502, now seen corresponding path program 3 times [2024-06-21 15:43:39,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945063088] [2024-06-21 15:43:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:40,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:40,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945063088] [2024-06-21 15:43:40,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945063088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:40,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:40,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:40,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028308193] [2024-06-21 15:43:40,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:40,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:40,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:40,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 456 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) [2024-06-21 15:43:40,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:40,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:40,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:41,189 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-21 15:43:41,189 INFO L125 PetriNetUnfolderBase]: For 8754/8757 co-relation queries the response was YES. [2024-06-21 15:43:41,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 489 events. 275/489 cut-off events. For 8754/8757 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1821 event pairs, 76 based on Foata normal form. 4/490 useless extension candidates. Maximal degree in co-relation 2517. Up to 377 conditions per place. [2024-06-21 15:43:41,192 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 32 changer transitions 0/80 dead transitions. [2024-06-21 15:43:41,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 736 flow [2024-06-21 15:43:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 15:43:41,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 15:43:41,194 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 456 flow. Second operand 8 states and 90 transitions. [2024-06-21 15:43:41,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 736 flow [2024-06-21 15:43:41,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 687 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:41,200 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 528 flow [2024-06-21 15:43:41,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-06-21 15:43:41,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-21 15:43:41,200 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 528 flow [2024-06-21 15:43:41,201 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) [2024-06-21 15:43:41,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:41,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 15:43:41,201 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)] === [2024-06-21 15:43:41,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1482683714, now seen corresponding path program 4 times [2024-06-21 15:43:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037941898] [2024-06-21 15:43:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037941898] [2024-06-21 15:43:42,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037941898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:42,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:42,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11095091] [2024-06-21 15:43:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:42,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:42,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:42,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 528 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) [2024-06-21 15:43:42,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:42,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:42,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:42,965 INFO L124 PetriNetUnfolderBase]: 276/491 cut-off events. [2024-06-21 15:43:42,966 INFO L125 PetriNetUnfolderBase]: For 9423/9426 co-relation queries the response was YES. [2024-06-21 15:43:42,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 491 events. 276/491 cut-off events. For 9423/9426 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1828 event pairs, 80 based on Foata normal form. 4/492 useless extension candidates. Maximal degree in co-relation 2613. Up to 409 conditions per place. [2024-06-21 15:43:42,969 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 25 changer transitions 0/81 dead transitions. [2024-06-21 15:43:42,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 81 transitions, 748 flow [2024-06-21 15:43:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-21 15:43:42,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:43:42,970 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 528 flow. Second operand 8 states and 88 transitions. [2024-06-21 15:43:42,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 81 transitions, 748 flow [2024-06-21 15:43:42,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 81 transitions, 690 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:42,978 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 557 flow [2024-06-21 15:43:42,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=557, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-06-21 15:43:42,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-21 15:43:42,979 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 557 flow [2024-06-21 15:43:42,979 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) [2024-06-21 15:43:42,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:42,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:42,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 15:43:42,980 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)] === [2024-06-21 15:43:42,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash -969421590, now seen corresponding path program 1 times [2024-06-21 15:43:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:42,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783654823] [2024-06-21 15:43:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:46,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:46,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783654823] [2024-06-21 15:43:46,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783654823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:46,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:46,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769387612] [2024-06-21 15:43:46,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:46,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:46,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:46,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 557 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) [2024-06-21 15:43:46,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:46,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:46,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:46,796 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-21 15:43:46,796 INFO L125 PetriNetUnfolderBase]: For 9657/9657 co-relation queries the response was YES. [2024-06-21 15:43:46,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 486 events. 274/486 cut-off events. For 9657/9657 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1798 event pairs, 81 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 2635. Up to 463 conditions per place. [2024-06-21 15:43:46,799 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2024-06-21 15:43:46,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 747 flow [2024-06-21 15:43:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-21 15:43:46,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-21 15:43:46,800 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 557 flow. Second operand 9 states and 88 transitions. [2024-06-21 15:43:46,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 747 flow [2024-06-21 15:43:46,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 80 transitions, 684 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:46,808 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 545 flow [2024-06-21 15:43:46,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=545, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-06-21 15:43:46,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-21 15:43:46,808 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 545 flow [2024-06-21 15:43:46,809 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) [2024-06-21 15:43:46,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:46,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 15:43:46,809 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)] === [2024-06-21 15:43:46,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1426617167, now seen corresponding path program 1 times [2024-06-21 15:43:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52924146] [2024-06-21 15:43:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:48,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52924146] [2024-06-21 15:43:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52924146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 15:43:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142762455] [2024-06-21 15:43:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:48,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 15:43:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:48,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 15:43:48,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 15:43:48,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:48,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 545 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) [2024-06-21 15:43:48,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:48,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:48,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:48,823 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-21 15:43:48,823 INFO L125 PetriNetUnfolderBase]: For 10503/10503 co-relation queries the response was YES. [2024-06-21 15:43:48,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 496 events. 280/496 cut-off events. For 10503/10503 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1846 event pairs, 60 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 2688. Up to 436 conditions per place. [2024-06-21 15:43:48,826 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-21 15:43:48,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 779 flow [2024-06-21 15:43:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 15:43:48,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 15:43:48,828 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 545 flow. Second operand 8 states and 90 transitions. [2024-06-21 15:43:48,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 779 flow [2024-06-21 15:43:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 744 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:48,837 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 563 flow [2024-06-21 15:43:48,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-21 15:43:48,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-21 15:43:48,838 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 563 flow [2024-06-21 15:43:48,838 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) [2024-06-21 15:43:48,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:48,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:48,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 15:43:48,839 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)] === [2024-06-21 15:43:48,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash 77977682, now seen corresponding path program 1 times [2024-06-21 15:43:48,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:48,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006375549] [2024-06-21 15:43:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:50,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006375549] [2024-06-21 15:43:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006375549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:50,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:50,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564700558] [2024-06-21 15:43:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:50,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:50,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:50,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 563 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) [2024-06-21 15:43:50,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:50,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:50,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:50,965 INFO L124 PetriNetUnfolderBase]: 278/493 cut-off events. [2024-06-21 15:43:50,965 INFO L125 PetriNetUnfolderBase]: For 10835/10835 co-relation queries the response was YES. [2024-06-21 15:43:50,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 493 events. 278/493 cut-off events. For 10835/10835 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1835 event pairs, 74 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 2721. Up to 436 conditions per place. [2024-06-21 15:43:50,969 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2024-06-21 15:43:50,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 87 transitions, 771 flow [2024-06-21 15:43:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 15:43:50,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-21 15:43:50,970 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 563 flow. Second operand 8 states and 87 transitions. [2024-06-21 15:43:50,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 87 transitions, 771 flow [2024-06-21 15:43:50,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 87 transitions, 728 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 15:43:50,978 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 566 flow [2024-06-21 15:43:50,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=566, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2024-06-21 15:43:50,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-21 15:43:50,979 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 566 flow [2024-06-21 15:43:50,979 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) [2024-06-21 15:43:50,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:50,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 15:43:50,979 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)] === [2024-06-21 15:43:50,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash 77977465, now seen corresponding path program 2 times [2024-06-21 15:43:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749040322] [2024-06-21 15:43:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:50,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:52,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:52,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749040322] [2024-06-21 15:43:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749040322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:52,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:52,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987849899] [2024-06-21 15:43:52,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:52,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:52,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:52,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 566 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) [2024-06-21 15:43:52,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:52,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:52,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:53,134 INFO L124 PetriNetUnfolderBase]: 294/519 cut-off events. [2024-06-21 15:43:53,134 INFO L125 PetriNetUnfolderBase]: For 12762/12762 co-relation queries the response was YES. [2024-06-21 15:43:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 519 events. 294/519 cut-off events. For 12762/12762 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1949 event pairs, 55 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 2921. Up to 412 conditions per place. [2024-06-21 15:43:53,137 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 24 changer transitions 0/95 dead transitions. [2024-06-21 15:43:53,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 890 flow [2024-06-21 15:43:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-21 15:43:53,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 15:43:53,139 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 566 flow. Second operand 8 states and 94 transitions. [2024-06-21 15:43:53,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 890 flow [2024-06-21 15:43:53,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 833 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:53,147 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 611 flow [2024-06-21 15:43:53,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-21 15:43:53,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-21 15:43:53,148 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 611 flow [2024-06-21 15:43:53,148 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) [2024-06-21 15:43:53,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:53,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:53,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 15:43:53,149 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)] === [2024-06-21 15:43:53,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:53,149 INFO L85 PathProgramCache]: Analyzing trace with hash 77971885, now seen corresponding path program 3 times [2024-06-21 15:43:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:53,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499057776] [2024-06-21 15:43:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:53,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:54,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:54,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499057776] [2024-06-21 15:43:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499057776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:54,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:54,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944578499] [2024-06-21 15:43:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:54,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:54,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:54,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 611 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) [2024-06-21 15:43:54,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:54,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:54,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:55,175 INFO L124 PetriNetUnfolderBase]: 290/513 cut-off events. [2024-06-21 15:43:55,175 INFO L125 PetriNetUnfolderBase]: For 13305/13305 co-relation queries the response was YES. [2024-06-21 15:43:55,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 513 events. 290/513 cut-off events. For 13305/13305 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1917 event pairs, 55 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2918. Up to 436 conditions per place. [2024-06-21 15:43:55,178 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-21 15:43:55,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 831 flow [2024-06-21 15:43:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-21 15:43:55,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-21 15:43:55,180 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 611 flow. Second operand 8 states and 91 transitions. [2024-06-21 15:43:55,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 831 flow [2024-06-21 15:43:55,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 784 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 15:43:55,190 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 605 flow [2024-06-21 15:43:55,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-06-21 15:43:55,190 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-21 15:43:55,190 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 605 flow [2024-06-21 15:43:55,191 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) [2024-06-21 15:43:55,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:55,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:55,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 15:43:55,191 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)] === [2024-06-21 15:43:55,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1278792241, now seen corresponding path program 1 times [2024-06-21 15:43:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:55,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217495364] [2024-06-21 15:43:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217495364] [2024-06-21 15:43:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217495364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:56,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529490294] [2024-06-21 15:43:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:56,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:57,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:57,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 605 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) [2024-06-21 15:43:57,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:57,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:57,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:57,469 INFO L124 PetriNetUnfolderBase]: 296/524 cut-off events. [2024-06-21 15:43:57,470 INFO L125 PetriNetUnfolderBase]: For 14146/14149 co-relation queries the response was YES. [2024-06-21 15:43:57,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 524 events. 296/524 cut-off events. For 14146/14149 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1979 event pairs, 79 based on Foata normal form. 4/526 useless extension candidates. Maximal degree in co-relation 3000. Up to 467 conditions per place. [2024-06-21 15:43:57,473 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-21 15:43:57,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 857 flow [2024-06-21 15:43:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:43:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:43:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 15:43:57,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 15:43:57,474 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 605 flow. Second operand 9 states and 96 transitions. [2024-06-21 15:43:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 857 flow [2024-06-21 15:43:57,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 804 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:57,485 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 615 flow [2024-06-21 15:43:57,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=615, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2024-06-21 15:43:57,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-21 15:43:57,486 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 615 flow [2024-06-21 15:43:57,486 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) [2024-06-21 15:43:57,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:57,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:57,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 15:43:57,487 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)] === [2024-06-21 15:43:57,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -253541763, now seen corresponding path program 4 times [2024-06-21 15:43:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:57,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297516683] [2024-06-21 15:43:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:43:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:43:59,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:43:59,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297516683] [2024-06-21 15:43:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297516683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:43:59,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:43:59,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:43:59,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884205809] [2024-06-21 15:43:59,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:43:59,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:43:59,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:43:59,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:43:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:43:59,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:43:59,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 615 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) [2024-06-21 15:43:59,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:43:59,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:43:59,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:43:59,629 INFO L124 PetriNetUnfolderBase]: 312/551 cut-off events. [2024-06-21 15:43:59,629 INFO L125 PetriNetUnfolderBase]: For 16045/16048 co-relation queries the response was YES. [2024-06-21 15:43:59,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 551 events. 312/551 cut-off events. For 16045/16048 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2099 event pairs, 66 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3234. Up to 440 conditions per place. [2024-06-21 15:43:59,632 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 24 changer transitions 0/100 dead transitions. [2024-06-21 15:43:59,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 961 flow [2024-06-21 15:43:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:43:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:43:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 15:43:59,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 15:43:59,634 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 615 flow. Second operand 8 states and 96 transitions. [2024-06-21 15:43:59,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 961 flow [2024-06-21 15:43:59,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 914 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 15:43:59,647 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 677 flow [2024-06-21 15:43:59,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-06-21 15:43:59,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-21 15:43:59,648 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 677 flow [2024-06-21 15:43:59,648 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) [2024-06-21 15:43:59,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:43:59,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:43:59,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 15:43:59,648 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)] === [2024-06-21 15:43:59,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:43:59,649 INFO L85 PathProgramCache]: Analyzing trace with hash -253547343, now seen corresponding path program 5 times [2024-06-21 15:43:59,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:43:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889361820] [2024-06-21 15:43:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:43:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:43:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:01,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:01,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889361820] [2024-06-21 15:44:01,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889361820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:01,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:01,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:01,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493610147] [2024-06-21 15:44:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:01,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:01,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:01,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:01,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 677 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) [2024-06-21 15:44:01,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:01,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:01,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:01,578 INFO L124 PetriNetUnfolderBase]: 308/545 cut-off events. [2024-06-21 15:44:01,579 INFO L125 PetriNetUnfolderBase]: For 16454/16457 co-relation queries the response was YES. [2024-06-21 15:44:01,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 545 events. 308/545 cut-off events. For 16454/16457 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2086 event pairs, 66 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3226. Up to 451 conditions per place. [2024-06-21 15:44:01,582 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-21 15:44:01,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 901 flow [2024-06-21 15:44:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:44:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:44:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-21 15:44:01,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-21 15:44:01,584 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 677 flow. Second operand 8 states and 91 transitions. [2024-06-21 15:44:01,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 901 flow [2024-06-21 15:44:01,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 97 transitions, 835 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 15:44:01,600 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 658 flow [2024-06-21 15:44:01,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-06-21 15:44:01,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-21 15:44:01,600 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 658 flow [2024-06-21 15:44:01,601 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) [2024-06-21 15:44:01,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:01,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:01,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 15:44:01,601 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)] === [2024-06-21 15:44:01,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:01,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1281715645, now seen corresponding path program 2 times [2024-06-21 15:44:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:01,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033625087] [2024-06-21 15:44:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:03,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:03,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033625087] [2024-06-21 15:44:03,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033625087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:03,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:03,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111330824] [2024-06-21 15:44:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:03,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:03,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 658 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) [2024-06-21 15:44:03,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:03,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:03,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:03,705 INFO L124 PetriNetUnfolderBase]: 314/553 cut-off events. [2024-06-21 15:44:03,706 INFO L125 PetriNetUnfolderBase]: For 17464/17464 co-relation queries the response was YES. [2024-06-21 15:44:03,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 553 events. 314/553 cut-off events. For 17464/17464 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2108 event pairs, 83 based on Foata normal form. 2/554 useless extension candidates. Maximal degree in co-relation 3297. Up to 527 conditions per place. [2024-06-21 15:44:03,709 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-06-21 15:44:03,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 95 transitions, 894 flow [2024-06-21 15:44:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-21 15:44:03,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-21 15:44:03,710 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 658 flow. Second operand 9 states and 89 transitions. [2024-06-21 15:44:03,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 95 transitions, 894 flow [2024-06-21 15:44:03,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 847 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:03,725 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 674 flow [2024-06-21 15:44:03,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=674, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2024-06-21 15:44:03,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-21 15:44:03,726 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 674 flow [2024-06-21 15:44:03,726 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) [2024-06-21 15:44:03,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:03,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 15:44:03,727 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)] === [2024-06-21 15:44:03,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:03,727 INFO L85 PathProgramCache]: Analyzing trace with hash 12365263, now seen corresponding path program 3 times [2024-06-21 15:44:03,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:03,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976721737] [2024-06-21 15:44:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:05,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:05,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976721737] [2024-06-21 15:44:05,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976721737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:05,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39103008] [2024-06-21 15:44:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:05,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:05,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:05,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:05,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 674 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) [2024-06-21 15:44:05,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:05,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:05,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:05,760 INFO L124 PetriNetUnfolderBase]: 320/565 cut-off events. [2024-06-21 15:44:05,760 INFO L125 PetriNetUnfolderBase]: For 18588/18591 co-relation queries the response was YES. [2024-06-21 15:44:05,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 565 events. 320/565 cut-off events. For 18588/18591 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2169 event pairs, 79 based on Foata normal form. 4/566 useless extension candidates. Maximal degree in co-relation 3391. Up to 447 conditions per place. [2024-06-21 15:44:05,763 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 63 selfloop transitions, 36 changer transitions 0/101 dead transitions. [2024-06-21 15:44:05,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 942 flow [2024-06-21 15:44:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 15:44:05,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 15:44:05,765 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 674 flow. Second operand 9 states and 98 transitions. [2024-06-21 15:44:05,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 942 flow [2024-06-21 15:44:05,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 101 transitions, 895 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:05,781 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 738 flow [2024-06-21 15:44:05,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=738, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-06-21 15:44:05,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-21 15:44:05,783 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 738 flow [2024-06-21 15:44:05,783 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) [2024-06-21 15:44:05,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:05,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:05,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 15:44:05,783 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)] === [2024-06-21 15:44:05,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:05,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1274297035, now seen corresponding path program 4 times [2024-06-21 15:44:05,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:05,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186377556] [2024-06-21 15:44:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:05,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:07,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:07,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186377556] [2024-06-21 15:44:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186377556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:07,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504276521] [2024-06-21 15:44:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:07,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:07,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:07,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 738 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) [2024-06-21 15:44:07,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:07,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:07,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:07,832 INFO L124 PetriNetUnfolderBase]: 326/575 cut-off events. [2024-06-21 15:44:07,832 INFO L125 PetriNetUnfolderBase]: For 19773/19776 co-relation queries the response was YES. [2024-06-21 15:44:07,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3614 conditions, 575 events. 326/575 cut-off events. For 19773/19776 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2245 event pairs, 83 based on Foata normal form. 4/576 useless extension candidates. Maximal degree in co-relation 3561. Up to 505 conditions per place. [2024-06-21 15:44:07,836 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 81 selfloop transitions, 20 changer transitions 0/103 dead transitions. [2024-06-21 15:44:07,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 103 transitions, 1014 flow [2024-06-21 15:44:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 15:44:07,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 15:44:07,837 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 738 flow. Second operand 9 states and 96 transitions. [2024-06-21 15:44:07,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 103 transitions, 1014 flow [2024-06-21 15:44:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 919 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:07,856 INFO L231 Difference]: Finished difference. Result has 109 places, 89 transitions, 726 flow [2024-06-21 15:44:07,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=726, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2024-06-21 15:44:07,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-21 15:44:07,857 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 726 flow [2024-06-21 15:44:07,857 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) [2024-06-21 15:44:07,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:07,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:07,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 15:44:07,857 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)] === [2024-06-21 15:44:07,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash 3160557, now seen corresponding path program 6 times [2024-06-21 15:44:07,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:07,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371829428] [2024-06-21 15:44:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:07,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:09,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:09,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371829428] [2024-06-21 15:44:09,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371829428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:09,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:09,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:09,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506892269] [2024-06-21 15:44:09,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:09,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:09,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:09,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:09,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:09,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 726 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) [2024-06-21 15:44:09,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:09,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:09,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:10,041 INFO L124 PetriNetUnfolderBase]: 322/569 cut-off events. [2024-06-21 15:44:10,041 INFO L125 PetriNetUnfolderBase]: For 19767/19770 co-relation queries the response was YES. [2024-06-21 15:44:10,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 569 events. 322/569 cut-off events. For 19767/19770 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2223 event pairs, 65 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 3466. Up to 411 conditions per place. [2024-06-21 15:44:10,045 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 36 changer transitions 0/106 dead transitions. [2024-06-21 15:44:10,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 1002 flow [2024-06-21 15:44:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:44:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:44:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-21 15:44:10,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 15:44:10,047 INFO L175 Difference]: Start difference. First operand has 109 places, 89 transitions, 726 flow. Second operand 8 states and 94 transitions. [2024-06-21 15:44:10,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 1002 flow [2024-06-21 15:44:10,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 935 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:10,062 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 770 flow [2024-06-21 15:44:10,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=770, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2024-06-21 15:44:10,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-21 15:44:10,063 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 770 flow [2024-06-21 15:44:10,063 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) [2024-06-21 15:44:10,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:10,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:10,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 15:44:10,064 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)] === [2024-06-21 15:44:10,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash 3168493, now seen corresponding path program 5 times [2024-06-21 15:44:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:10,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195769716] [2024-06-21 15:44:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195769716] [2024-06-21 15:44:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195769716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:11,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:11,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056250172] [2024-06-21 15:44:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:11,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:11,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:11,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:11,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 770 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) [2024-06-21 15:44:11,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:11,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:11,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:12,030 INFO L124 PetriNetUnfolderBase]: 323/571 cut-off events. [2024-06-21 15:44:12,031 INFO L125 PetriNetUnfolderBase]: For 20481/20484 co-relation queries the response was YES. [2024-06-21 15:44:12,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 571 events. 323/571 cut-off events. For 20481/20484 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2239 event pairs, 80 based on Foata normal form. 4/572 useless extension candidates. Maximal degree in co-relation 3543. Up to 481 conditions per place. [2024-06-21 15:44:12,034 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 27 changer transitions 0/107 dead transitions. [2024-06-21 15:44:12,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 1058 flow [2024-06-21 15:44:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 15:44:12,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-21 15:44:12,044 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 770 flow. Second operand 9 states and 97 transitions. [2024-06-21 15:44:12,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 1058 flow [2024-06-21 15:44:12,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 963 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:12,063 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 776 flow [2024-06-21 15:44:12,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=776, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-06-21 15:44:12,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-21 15:44:12,063 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 776 flow [2024-06-21 15:44:12,063 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) [2024-06-21 15:44:12,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:12,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:12,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 15:44:12,064 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)] === [2024-06-21 15:44:12,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash 12703597, now seen corresponding path program 1 times [2024-06-21 15:44:12,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:12,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628844585] [2024-06-21 15:44:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:12,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:14,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628844585] [2024-06-21 15:44:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628844585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:14,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:14,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525101730] [2024-06-21 15:44:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:14,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:14,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 776 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) [2024-06-21 15:44:14,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:14,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:14,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:14,924 INFO L124 PetriNetUnfolderBase]: 320/564 cut-off events. [2024-06-21 15:44:14,924 INFO L125 PetriNetUnfolderBase]: For 20362/20362 co-relation queries the response was YES. [2024-06-21 15:44:14,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 564 events. 320/564 cut-off events. For 20362/20362 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2190 event pairs, 87 based on Foata normal form. 2/565 useless extension candidates. Maximal degree in co-relation 3445. Up to 535 conditions per place. [2024-06-21 15:44:14,928 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2024-06-21 15:44:14,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 104 transitions, 1004 flow [2024-06-21 15:44:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-21 15:44:14,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-21 15:44:14,929 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 776 flow. Second operand 10 states and 95 transitions. [2024-06-21 15:44:14,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 104 transitions, 1004 flow [2024-06-21 15:44:14,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 919 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:14,946 INFO L231 Difference]: Finished difference. Result has 116 places, 93 transitions, 725 flow [2024-06-21 15:44:14,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=725, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2024-06-21 15:44:14,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-21 15:44:14,947 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 725 flow [2024-06-21 15:44:14,947 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) [2024-06-21 15:44:14,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:14,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:14,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 15:44:14,947 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)] === [2024-06-21 15:44:14,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1995990229, now seen corresponding path program 1 times [2024-06-21 15:44:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:14,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494856690] [2024-06-21 15:44:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:16,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:16,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494856690] [2024-06-21 15:44:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494856690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:16,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:16,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:16,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486411790] [2024-06-21 15:44:16,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:16,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:16,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:16,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:16,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:16,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 725 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) [2024-06-21 15:44:16,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:16,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:16,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:17,270 INFO L124 PetriNetUnfolderBase]: 324/572 cut-off events. [2024-06-21 15:44:17,270 INFO L125 PetriNetUnfolderBase]: For 21197/21197 co-relation queries the response was YES. [2024-06-21 15:44:17,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 572 events. 324/572 cut-off events. For 21197/21197 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2244 event pairs, 46 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 3444. Up to 502 conditions per place. [2024-06-21 15:44:17,274 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 98 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-06-21 15:44:17,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 111 transitions, 997 flow [2024-06-21 15:44:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:44:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:44:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 15:44:17,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-21 15:44:17,301 INFO L175 Difference]: Start difference. First operand has 116 places, 93 transitions, 725 flow. Second operand 8 states and 87 transitions. [2024-06-21 15:44:17,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 111 transitions, 997 flow [2024-06-21 15:44:17,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 957 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:17,320 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 727 flow [2024-06-21 15:44:17,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=727, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-06-21 15:44:17,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-21 15:44:17,321 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 727 flow [2024-06-21 15:44:17,321 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) [2024-06-21 15:44:17,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:17,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:17,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 15:44:17,322 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)] === [2024-06-21 15:44:17,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1993248589, now seen corresponding path program 2 times [2024-06-21 15:44:17,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552102880] [2024-06-21 15:44:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:19,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552102880] [2024-06-21 15:44:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552102880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:19,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952769878] [2024-06-21 15:44:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:19,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:19,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:19,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 727 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) [2024-06-21 15:44:19,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:19,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:19,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:19,725 INFO L124 PetriNetUnfolderBase]: 328/580 cut-off events. [2024-06-21 15:44:19,726 INFO L125 PetriNetUnfolderBase]: For 22401/22401 co-relation queries the response was YES. [2024-06-21 15:44:19,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 580 events. 328/580 cut-off events. For 22401/22401 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2304 event pairs, 66 based on Foata normal form. 2/581 useless extension candidates. Maximal degree in co-relation 3509. Up to 522 conditions per place. [2024-06-21 15:44:19,731 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 98 selfloop transitions, 12 changer transitions 0/112 dead transitions. [2024-06-21 15:44:19,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 112 transitions, 1003 flow [2024-06-21 15:44:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:44:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:44:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 15:44:19,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-21 15:44:19,732 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 727 flow. Second operand 8 states and 89 transitions. [2024-06-21 15:44:19,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 112 transitions, 1003 flow [2024-06-21 15:44:19,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 971 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:19,766 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 741 flow [2024-06-21 15:44:19,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-06-21 15:44:19,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-21 15:44:19,767 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 741 flow [2024-06-21 15:44:19,767 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) [2024-06-21 15:44:19,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:19,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:19,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 15:44:19,768 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)] === [2024-06-21 15:44:19,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1993128309, now seen corresponding path program 1 times [2024-06-21 15:44:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990435044] [2024-06-21 15:44:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:19,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:21,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990435044] [2024-06-21 15:44:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990435044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:21,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:21,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821501600] [2024-06-21 15:44:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:21,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:21,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:21,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 741 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) [2024-06-21 15:44:21,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:21,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:21,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:22,210 INFO L124 PetriNetUnfolderBase]: 334/590 cut-off events. [2024-06-21 15:44:22,211 INFO L125 PetriNetUnfolderBase]: For 23917/23917 co-relation queries the response was YES. [2024-06-21 15:44:22,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3643 conditions, 590 events. 334/590 cut-off events. For 23917/23917 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2342 event pairs, 65 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 3584. Up to 522 conditions per place. [2024-06-21 15:44:22,214 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 15 changer transitions 0/116 dead transitions. [2024-06-21 15:44:22,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 116 transitions, 1041 flow [2024-06-21 15:44:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 15:44:22,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:44:22,226 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 741 flow. Second operand 9 states and 99 transitions. [2024-06-21 15:44:22,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 116 transitions, 1041 flow [2024-06-21 15:44:22,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 116 transitions, 1005 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:22,249 INFO L231 Difference]: Finished difference. Result has 121 places, 97 transitions, 772 flow [2024-06-21 15:44:22,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=772, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2024-06-21 15:44:22,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-21 15:44:22,251 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 772 flow [2024-06-21 15:44:22,251 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) [2024-06-21 15:44:22,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:22,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 15:44:22,251 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)] === [2024-06-21 15:44:22,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1160581481, now seen corresponding path program 2 times [2024-06-21 15:44:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705185115] [2024-06-21 15:44:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:24,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:24,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705185115] [2024-06-21 15:44:24,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705185115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:24,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:24,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000085761] [2024-06-21 15:44:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:24,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:24,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:24,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:24,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:24,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 772 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) [2024-06-21 15:44:24,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:24,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:24,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:24,655 INFO L124 PetriNetUnfolderBase]: 350/616 cut-off events. [2024-06-21 15:44:24,655 INFO L125 PetriNetUnfolderBase]: For 26736/26736 co-relation queries the response was YES. [2024-06-21 15:44:24,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 616 events. 350/616 cut-off events. For 26736/26736 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2461 event pairs, 57 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 3855. Up to 470 conditions per place. [2024-06-21 15:44:24,659 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 32 changer transitions 0/122 dead transitions. [2024-06-21 15:44:24,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 1206 flow [2024-06-21 15:44:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 15:44:24,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 15:44:24,660 INFO L175 Difference]: Start difference. First operand has 121 places, 97 transitions, 772 flow. Second operand 9 states and 105 transitions. [2024-06-21 15:44:24,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 1206 flow [2024-06-21 15:44:24,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1155 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:24,688 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 859 flow [2024-06-21 15:44:24,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=859, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2024-06-21 15:44:24,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-21 15:44:24,689 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 859 flow [2024-06-21 15:44:24,689 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) [2024-06-21 15:44:24,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:24,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:24,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 15:44:24,690 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)] === [2024-06-21 15:44:24,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1160581233, now seen corresponding path program 1 times [2024-06-21 15:44:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:24,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137010928] [2024-06-21 15:44:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:24,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:26,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137010928] [2024-06-21 15:44:26,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137010928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:26,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:26,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750592730] [2024-06-21 15:44:26,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:26,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:26,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:26,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 859 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) [2024-06-21 15:44:26,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:26,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:26,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:26,988 INFO L124 PetriNetUnfolderBase]: 348/613 cut-off events. [2024-06-21 15:44:26,988 INFO L125 PetriNetUnfolderBase]: For 26868/26868 co-relation queries the response was YES. [2024-06-21 15:44:26,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 613 events. 348/613 cut-off events. For 26868/26868 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2459 event pairs, 79 based on Foata normal form. 1/613 useless extension candidates. Maximal degree in co-relation 3878. Up to 545 conditions per place. [2024-06-21 15:44:26,992 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-21 15:44:26,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 1179 flow [2024-06-21 15:44:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 15:44:27,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 15:44:27,018 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 859 flow. Second operand 9 states and 96 transitions. [2024-06-21 15:44:27,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 1179 flow [2024-06-21 15:44:27,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 119 transitions, 1116 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:27,050 INFO L231 Difference]: Finished difference. Result has 127 places, 103 transitions, 896 flow [2024-06-21 15:44:27,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=896, PETRI_PLACES=127, PETRI_TRANSITIONS=103} [2024-06-21 15:44:27,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 15:44:27,052 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 103 transitions, 896 flow [2024-06-21 15:44:27,052 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) [2024-06-21 15:44:27,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:27,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:27,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 15:44:27,052 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)] === [2024-06-21 15:44:27,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:27,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1877842099, now seen corresponding path program 3 times [2024-06-21 15:44:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:27,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905736536] [2024-06-21 15:44:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:28,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905736536] [2024-06-21 15:44:28,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905736536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391240779] [2024-06-21 15:44:28,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:28,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:28,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 103 transitions, 896 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) [2024-06-21 15:44:28,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:28,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:28,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:29,418 INFO L124 PetriNetUnfolderBase]: 352/621 cut-off events. [2024-06-21 15:44:29,418 INFO L125 PetriNetUnfolderBase]: For 28895/28895 co-relation queries the response was YES. [2024-06-21 15:44:29,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 621 events. 352/621 cut-off events. For 28895/28895 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2508 event pairs, 59 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3974. Up to 546 conditions per place. [2024-06-21 15:44:29,422 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 101 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2024-06-21 15:44:29,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 120 transitions, 1188 flow [2024-06-21 15:44:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:44:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:44:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 15:44:29,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 15:44:29,424 INFO L175 Difference]: Start difference. First operand has 127 places, 103 transitions, 896 flow. Second operand 8 states and 90 transitions. [2024-06-21 15:44:29,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 120 transitions, 1188 flow [2024-06-21 15:44:29,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 120 transitions, 1108 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:29,456 INFO L231 Difference]: Finished difference. Result has 128 places, 104 transitions, 874 flow [2024-06-21 15:44:29,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=874, PETRI_PLACES=128, PETRI_TRANSITIONS=104} [2024-06-21 15:44:29,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-21 15:44:29,457 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 104 transitions, 874 flow [2024-06-21 15:44:29,457 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) [2024-06-21 15:44:29,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:29,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:29,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 15:44:29,457 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)] === [2024-06-21 15:44:29,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1160587991, now seen corresponding path program 3 times [2024-06-21 15:44:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:29,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53398635] [2024-06-21 15:44:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:29,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:31,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53398635] [2024-06-21 15:44:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53398635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:31,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:31,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009234931] [2024-06-21 15:44:31,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:31,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:31,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:31,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:31,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:31,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 104 transitions, 874 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) [2024-06-21 15:44:31,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:31,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:31,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:31,740 INFO L124 PetriNetUnfolderBase]: 358/631 cut-off events. [2024-06-21 15:44:31,740 INFO L125 PetriNetUnfolderBase]: For 29249/29249 co-relation queries the response was YES. [2024-06-21 15:44:31,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 631 events. 358/631 cut-off events. For 29249/29249 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2556 event pairs, 56 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 3985. Up to 519 conditions per place. [2024-06-21 15:44:31,744 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-21 15:44:31,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1198 flow [2024-06-21 15:44:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 15:44:31,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 15:44:31,745 INFO L175 Difference]: Start difference. First operand has 128 places, 104 transitions, 874 flow. Second operand 9 states and 102 transitions. [2024-06-21 15:44:31,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1198 flow [2024-06-21 15:44:31,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 1150 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:31,783 INFO L231 Difference]: Finished difference. Result has 131 places, 106 transitions, 919 flow [2024-06-21 15:44:31,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=919, PETRI_PLACES=131, PETRI_TRANSITIONS=106} [2024-06-21 15:44:31,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-21 15:44:31,784 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 106 transitions, 919 flow [2024-06-21 15:44:31,785 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) [2024-06-21 15:44:31,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:31,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 15:44:31,785 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)] === [2024-06-21 15:44:31,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1878431785, now seen corresponding path program 4 times [2024-06-21 15:44:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438541755] [2024-06-21 15:44:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:31,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:33,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438541755] [2024-06-21 15:44:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438541755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:33,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:33,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:33,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090264584] [2024-06-21 15:44:33,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:33,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:33,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:33,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:33,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 106 transitions, 919 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) [2024-06-21 15:44:33,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:33,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:33,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:34,321 INFO L124 PetriNetUnfolderBase]: 354/625 cut-off events. [2024-06-21 15:44:34,321 INFO L125 PetriNetUnfolderBase]: For 28794/28794 co-relation queries the response was YES. [2024-06-21 15:44:34,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3974 conditions, 625 events. 354/625 cut-off events. For 28794/28794 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2536 event pairs, 58 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 3909. Up to 540 conditions per place. [2024-06-21 15:44:34,325 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-06-21 15:44:34,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 124 transitions, 1205 flow [2024-06-21 15:44:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 15:44:34,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-21 15:44:34,326 INFO L175 Difference]: Start difference. First operand has 131 places, 106 transitions, 919 flow. Second operand 9 states and 100 transitions. [2024-06-21 15:44:34,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 124 transitions, 1205 flow [2024-06-21 15:44:34,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 1116 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:34,361 INFO L231 Difference]: Finished difference. Result has 133 places, 106 transitions, 875 flow [2024-06-21 15:44:34,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=133, PETRI_TRANSITIONS=106} [2024-06-21 15:44:34,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-21 15:44:34,362 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 106 transitions, 875 flow [2024-06-21 15:44:34,362 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) [2024-06-21 15:44:34,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:34,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:34,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 15:44:34,362 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)] === [2024-06-21 15:44:34,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:34,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1705522837, now seen corresponding path program 1 times [2024-06-21 15:44:34,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:34,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111135968] [2024-06-21 15:44:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:34,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:36,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111135968] [2024-06-21 15:44:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111135968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:36,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499898902] [2024-06-21 15:44:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:36,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:37,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:37,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 106 transitions, 875 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) [2024-06-21 15:44:37,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:37,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:37,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:37,409 INFO L124 PetriNetUnfolderBase]: 360/636 cut-off events. [2024-06-21 15:44:37,409 INFO L125 PetriNetUnfolderBase]: For 30099/30102 co-relation queries the response was YES. [2024-06-21 15:44:37,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3996 conditions, 636 events. 360/636 cut-off events. For 30099/30102 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2596 event pairs, 83 based on Foata normal form. 4/638 useless extension candidates. Maximal degree in co-relation 3930. Up to 571 conditions per place. [2024-06-21 15:44:37,413 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2024-06-21 15:44:37,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 126 transitions, 1205 flow [2024-06-21 15:44:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 15:44:37,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 15:44:37,414 INFO L175 Difference]: Start difference. First operand has 133 places, 106 transitions, 875 flow. Second operand 10 states and 105 transitions. [2024-06-21 15:44:37,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 126 transitions, 1205 flow [2024-06-21 15:44:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 126 transitions, 1141 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:37,454 INFO L231 Difference]: Finished difference. Result has 135 places, 108 transitions, 888 flow [2024-06-21 15:44:37,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=888, PETRI_PLACES=135, PETRI_TRANSITIONS=108} [2024-06-21 15:44:37,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-21 15:44:37,455 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 108 transitions, 888 flow [2024-06-21 15:44:37,455 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) [2024-06-21 15:44:37,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:37,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:37,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 15:44:37,456 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)] === [2024-06-21 15:44:37,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 729963721, now seen corresponding path program 4 times [2024-06-21 15:44:37,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:37,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188204479] [2024-06-21 15:44:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:37,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:39,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188204479] [2024-06-21 15:44:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188204479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:39,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256977381] [2024-06-21 15:44:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:39,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:39,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 108 transitions, 888 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) [2024-06-21 15:44:39,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:39,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:39,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:40,074 INFO L124 PetriNetUnfolderBase]: 357/632 cut-off events. [2024-06-21 15:44:40,074 INFO L125 PetriNetUnfolderBase]: For 29340/29343 co-relation queries the response was YES. [2024-06-21 15:44:40,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 632 events. 357/632 cut-off events. For 29340/29343 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2583 event pairs, 64 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 3841. Up to 540 conditions per place. [2024-06-21 15:44:40,078 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 100 selfloop transitions, 20 changer transitions 0/122 dead transitions. [2024-06-21 15:44:40,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 122 transitions, 1162 flow [2024-06-21 15:44:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 15:44:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 15:44:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-21 15:44:40,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 15:44:40,080 INFO L175 Difference]: Start difference. First operand has 135 places, 108 transitions, 888 flow. Second operand 8 states and 90 transitions. [2024-06-21 15:44:40,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 122 transitions, 1162 flow [2024-06-21 15:44:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 122 transitions, 1101 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:40,126 INFO L231 Difference]: Finished difference. Result has 135 places, 108 transitions, 871 flow [2024-06-21 15:44:40,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=871, PETRI_PLACES=135, PETRI_TRANSITIONS=108} [2024-06-21 15:44:40,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-21 15:44:40,127 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 108 transitions, 871 flow [2024-06-21 15:44:40,127 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) [2024-06-21 15:44:40,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:40,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:40,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 15:44:40,129 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)] === [2024-06-21 15:44:40,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash 842008527, now seen corresponding path program 5 times [2024-06-21 15:44:40,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:40,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111076962] [2024-06-21 15:44:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111076962] [2024-06-21 15:44:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111076962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:42,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22292879] [2024-06-21 15:44:42,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:42,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:42,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:42,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:42,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 108 transitions, 871 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) [2024-06-21 15:44:42,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:42,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:42,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:42,835 INFO L124 PetriNetUnfolderBase]: 373/660 cut-off events. [2024-06-21 15:44:42,835 INFO L125 PetriNetUnfolderBase]: For 32867/32867 co-relation queries the response was YES. [2024-06-21 15:44:42,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 660 events. 373/660 cut-off events. For 32867/32867 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2735 event pairs, 52 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4103. Up to 521 conditions per place. [2024-06-21 15:44:42,839 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-21 15:44:42,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 1390 flow [2024-06-21 15:44:42,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 15:44:42,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-21 15:44:42,841 INFO L175 Difference]: Start difference. First operand has 135 places, 108 transitions, 871 flow. Second operand 10 states and 117 transitions. [2024-06-21 15:44:42,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 1390 flow [2024-06-21 15:44:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 1316 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:42,885 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 958 flow [2024-06-21 15:44:42,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=958, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-06-21 15:44:42,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-21 15:44:42,885 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 958 flow [2024-06-21 15:44:42,886 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) [2024-06-21 15:44:42,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:42,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:42,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 15:44:42,886 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)] === [2024-06-21 15:44:42,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 730141661, now seen corresponding path program 6 times [2024-06-21 15:44:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:42,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204450891] [2024-06-21 15:44:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:42,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:44,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:44,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204450891] [2024-06-21 15:44:44,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204450891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:44,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:44,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:44,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263609853] [2024-06-21 15:44:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:44,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:44,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:44,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:44,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 958 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) [2024-06-21 15:44:44,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:44,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:44,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:45,340 INFO L124 PetriNetUnfolderBase]: 379/668 cut-off events. [2024-06-21 15:44:45,340 INFO L125 PetriNetUnfolderBase]: For 34684/34687 co-relation queries the response was YES. [2024-06-21 15:44:45,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 668 events. 379/668 cut-off events. For 34684/34687 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2801 event pairs, 64 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 4231. Up to 552 conditions per place. [2024-06-21 15:44:45,345 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 27 changer transitions 0/133 dead transitions. [2024-06-21 15:44:45,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 1302 flow [2024-06-21 15:44:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:45,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 15:44:45,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 15:44:45,346 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 958 flow. Second operand 9 states and 104 transitions. [2024-06-21 15:44:45,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 1302 flow [2024-06-21 15:44:45,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 133 transitions, 1218 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:45,397 INFO L231 Difference]: Finished difference. Result has 143 places, 116 transitions, 977 flow [2024-06-21 15:44:45,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=143, PETRI_TRANSITIONS=116} [2024-06-21 15:44:45,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 15:44:45,398 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 116 transitions, 977 flow [2024-06-21 15:44:45,398 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) [2024-06-21 15:44:45,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:45,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 15:44:45,399 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)] === [2024-06-21 15:44:45,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash 729968681, now seen corresponding path program 7 times [2024-06-21 15:44:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:45,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568222841] [2024-06-21 15:44:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:47,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:47,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568222841] [2024-06-21 15:44:47,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568222841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:47,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:44:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125209524] [2024-06-21 15:44:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:47,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:44:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:44:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:44:47,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:47,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 116 transitions, 977 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) [2024-06-21 15:44:47,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:47,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:47,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:47,486 INFO L124 PetriNetUnfolderBase]: 375/662 cut-off events. [2024-06-21 15:44:47,486 INFO L125 PetriNetUnfolderBase]: For 33668/33671 co-relation queries the response was YES. [2024-06-21 15:44:47,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 662 events. 375/662 cut-off events. For 33668/33671 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2776 event pairs, 66 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 4097. Up to 560 conditions per place. [2024-06-21 15:44:47,490 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 24 changer transitions 0/131 dead transitions. [2024-06-21 15:44:47,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 131 transitions, 1271 flow [2024-06-21 15:44:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 15:44:47,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-21 15:44:47,492 INFO L175 Difference]: Start difference. First operand has 143 places, 116 transitions, 977 flow. Second operand 9 states and 100 transitions. [2024-06-21 15:44:47,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 131 transitions, 1271 flow [2024-06-21 15:44:47,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 131 transitions, 1176 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 15:44:47,546 INFO L231 Difference]: Finished difference. Result has 145 places, 116 transitions, 935 flow [2024-06-21 15:44:47,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=935, PETRI_PLACES=145, PETRI_TRANSITIONS=116} [2024-06-21 15:44:47,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-21 15:44:47,547 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 116 transitions, 935 flow [2024-06-21 15:44:47,547 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) [2024-06-21 15:44:47,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:47,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 15:44:47,548 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)] === [2024-06-21 15:44:47,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash 106567167, now seen corresponding path program 2 times [2024-06-21 15:44:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:47,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957668494] [2024-06-21 15:44:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:49,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:49,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957668494] [2024-06-21 15:44:49,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957668494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:49,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:49,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:49,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969330631] [2024-06-21 15:44:49,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:49,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:49,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:49,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:49,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 116 transitions, 935 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) [2024-06-21 15:44:49,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:49,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:49,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:50,410 INFO L124 PetriNetUnfolderBase]: 391/686 cut-off events. [2024-06-21 15:44:50,410 INFO L125 PetriNetUnfolderBase]: For 37415/37415 co-relation queries the response was YES. [2024-06-21 15:44:50,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 686 events. 391/686 cut-off events. For 37415/37415 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2905 event pairs, 90 based on Foata normal form. 2/687 useless extension candidates. Maximal degree in co-relation 4301. Up to 640 conditions per place. [2024-06-21 15:44:50,415 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 19 changer transitions 0/134 dead transitions. [2024-06-21 15:44:50,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 134 transitions, 1402 flow [2024-06-21 15:44:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 15:44:50,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-21 15:44:50,416 INFO L175 Difference]: Start difference. First operand has 145 places, 116 transitions, 935 flow. Second operand 10 states and 102 transitions. [2024-06-21 15:44:50,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 134 transitions, 1402 flow [2024-06-21 15:44:50,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 1340 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:50,477 INFO L231 Difference]: Finished difference. Result has 147 places, 120 transitions, 988 flow [2024-06-21 15:44:50,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=147, PETRI_TRANSITIONS=120} [2024-06-21 15:44:50,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-21 15:44:50,478 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 988 flow [2024-06-21 15:44:50,478 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) [2024-06-21 15:44:50,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:50,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:50,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 15:44:50,479 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)] === [2024-06-21 15:44:50,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2004760071, now seen corresponding path program 8 times [2024-06-21 15:44:50,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:50,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719014020] [2024-06-21 15:44:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:50,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:52,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719014020] [2024-06-21 15:44:52,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719014020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:52,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:52,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:52,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938588263] [2024-06-21 15:44:52,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:52,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:52,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:52,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:52,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 120 transitions, 988 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) [2024-06-21 15:44:52,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:52,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:52,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:53,261 INFO L124 PetriNetUnfolderBase]: 397/698 cut-off events. [2024-06-21 15:44:53,261 INFO L125 PetriNetUnfolderBase]: For 39259/39262 co-relation queries the response was YES. [2024-06-21 15:44:53,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 698 events. 397/698 cut-off events. For 39259/39262 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2952 event pairs, 59 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 4399. Up to 431 conditions per place. [2024-06-21 15:44:53,266 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 61 changer transitions 0/142 dead transitions. [2024-06-21 15:44:53,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 1492 flow [2024-06-21 15:44:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:44:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:44:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 15:44:53,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-21 15:44:53,268 INFO L175 Difference]: Start difference. First operand has 147 places, 120 transitions, 988 flow. Second operand 9 states and 107 transitions. [2024-06-21 15:44:53,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 1492 flow [2024-06-21 15:44:53,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 142 transitions, 1440 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 15:44:53,333 INFO L231 Difference]: Finished difference. Result has 150 places, 124 transitions, 1147 flow [2024-06-21 15:44:53,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1147, PETRI_PLACES=150, PETRI_TRANSITIONS=124} [2024-06-21 15:44:53,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-21 15:44:53,334 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 124 transitions, 1147 flow [2024-06-21 15:44:53,334 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) [2024-06-21 15:44:53,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:53,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 15:44:53,334 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)] === [2024-06-21 15:44:53,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1936879385, now seen corresponding path program 3 times [2024-06-21 15:44:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084255165] [2024-06-21 15:44:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:56,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084255165] [2024-06-21 15:44:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084255165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:56,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:56,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501647928] [2024-06-21 15:44:56,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:56,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:56,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:56,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:56,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 124 transitions, 1147 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) [2024-06-21 15:44:56,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:56,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:56,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:56,888 INFO L124 PetriNetUnfolderBase]: 403/708 cut-off events. [2024-06-21 15:44:56,889 INFO L125 PetriNetUnfolderBase]: For 41042/41045 co-relation queries the response was YES. [2024-06-21 15:44:56,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 708 events. 403/708 cut-off events. For 41042/41045 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3035 event pairs, 87 based on Foata normal form. 4/709 useless extension candidates. Maximal degree in co-relation 4645. Up to 630 conditions per place. [2024-06-21 15:44:56,894 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2024-06-21 15:44:56,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 142 transitions, 1514 flow [2024-06-21 15:44:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 15:44:56,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 15:44:56,895 INFO L175 Difference]: Start difference. First operand has 150 places, 124 transitions, 1147 flow. Second operand 10 states and 105 transitions. [2024-06-21 15:44:56,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 142 transitions, 1514 flow [2024-06-21 15:44:56,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 142 transitions, 1416 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 15:44:56,963 INFO L231 Difference]: Finished difference. Result has 155 places, 126 transitions, 1140 flow [2024-06-21 15:44:56,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1140, PETRI_PLACES=155, PETRI_TRANSITIONS=126} [2024-06-21 15:44:56,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-21 15:44:56,964 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 126 transitions, 1140 flow [2024-06-21 15:44:56,964 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) [2024-06-21 15:44:56,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:56,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:56,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 15:44:56,964 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)] === [2024-06-21 15:44:56,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash 393444267, now seen corresponding path program 4 times [2024-06-21 15:44:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:56,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514085325] [2024-06-21 15:44:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:56,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:44:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:44:59,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:44:59,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514085325] [2024-06-21 15:44:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514085325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:44:59,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:44:59,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:44:59,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160341912] [2024-06-21 15:44:59,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:44:59,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:44:59,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:44:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:44:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:44:59,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:44:59,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 126 transitions, 1140 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) [2024-06-21 15:44:59,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:44:59,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:44:59,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:44:59,641 INFO L124 PetriNetUnfolderBase]: 399/700 cut-off events. [2024-06-21 15:44:59,641 INFO L125 PetriNetUnfolderBase]: For 39370/39370 co-relation queries the response was YES. [2024-06-21 15:44:59,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 700 events. 399/700 cut-off events. For 39370/39370 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2985 event pairs, 92 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 4500. Up to 657 conditions per place. [2024-06-21 15:44:59,645 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2024-06-21 15:44:59,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 138 transitions, 1445 flow [2024-06-21 15:44:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:44:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:44:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-21 15:44:59,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-21 15:44:59,649 INFO L175 Difference]: Start difference. First operand has 155 places, 126 transitions, 1140 flow. Second operand 10 states and 99 transitions. [2024-06-21 15:44:59,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 138 transitions, 1445 flow [2024-06-21 15:44:59,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 138 transitions, 1346 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 15:44:59,706 INFO L231 Difference]: Finished difference. Result has 157 places, 126 transitions, 1088 flow [2024-06-21 15:44:59,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1088, PETRI_PLACES=157, PETRI_TRANSITIONS=126} [2024-06-21 15:44:59,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-21 15:44:59,707 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 126 transitions, 1088 flow [2024-06-21 15:44:59,707 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) [2024-06-21 15:44:59,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:44:59,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:44:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 15:44:59,708 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)] === [2024-06-21 15:44:59,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:44:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash 383324937, now seen corresponding path program 5 times [2024-06-21 15:44:59,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:44:59,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296920594] [2024-06-21 15:44:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:44:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:44:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:01,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:01,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296920594] [2024-06-21 15:45:01,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296920594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:01,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80905739] [2024-06-21 15:45:01,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:02,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:02,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 126 transitions, 1088 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) [2024-06-21 15:45:02,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:02,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:02,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:02,566 INFO L124 PetriNetUnfolderBase]: 405/712 cut-off events. [2024-06-21 15:45:02,566 INFO L125 PetriNetUnfolderBase]: For 40820/40823 co-relation queries the response was YES. [2024-06-21 15:45:02,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 712 events. 405/712 cut-off events. For 40820/40823 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3058 event pairs, 80 based on Foata normal form. 4/713 useless extension candidates. Maximal degree in co-relation 4538. Up to 586 conditions per place. [2024-06-21 15:45:02,571 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 38 changer transitions 0/144 dead transitions. [2024-06-21 15:45:02,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 1463 flow [2024-06-21 15:45:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 15:45:02,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 15:45:02,572 INFO L175 Difference]: Start difference. First operand has 157 places, 126 transitions, 1088 flow. Second operand 10 states and 107 transitions. [2024-06-21 15:45:02,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 1463 flow [2024-06-21 15:45:02,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 144 transitions, 1420 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 15:45:02,639 INFO L231 Difference]: Finished difference. Result has 157 places, 128 transitions, 1172 flow [2024-06-21 15:45:02,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1172, PETRI_PLACES=157, PETRI_TRANSITIONS=128} [2024-06-21 15:45:02,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-21 15:45:02,640 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 128 transitions, 1172 flow [2024-06-21 15:45:02,640 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) [2024-06-21 15:45:02,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:02,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:02,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 15:45:02,640 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)] === [2024-06-21 15:45:02,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash 97985499, now seen corresponding path program 9 times [2024-06-21 15:45:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:02,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944821013] [2024-06-21 15:45:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:04,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:04,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944821013] [2024-06-21 15:45:04,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944821013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:04,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:04,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:04,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510743784] [2024-06-21 15:45:04,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:04,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:04,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:04,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:04,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 128 transitions, 1172 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) [2024-06-21 15:45:04,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:04,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:05,389 INFO L124 PetriNetUnfolderBase]: 411/722 cut-off events. [2024-06-21 15:45:05,389 INFO L125 PetriNetUnfolderBase]: For 40997/41000 co-relation queries the response was YES. [2024-06-21 15:45:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 722 events. 411/722 cut-off events. For 40997/41000 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3111 event pairs, 61 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4691. Up to 539 conditions per place. [2024-06-21 15:45:05,393 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 42 changer transitions 0/149 dead transitions. [2024-06-21 15:45:05,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1658 flow [2024-06-21 15:45:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 15:45:05,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 15:45:05,394 INFO L175 Difference]: Start difference. First operand has 157 places, 128 transitions, 1172 flow. Second operand 9 states and 108 transitions. [2024-06-21 15:45:05,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1658 flow [2024-06-21 15:45:05,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1547 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:05,477 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 1190 flow [2024-06-21 15:45:05,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1190, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2024-06-21 15:45:05,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-21 15:45:05,477 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 1190 flow [2024-06-21 15:45:05,478 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) [2024-06-21 15:45:05,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:05,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:05,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 15:45:05,478 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)] === [2024-06-21 15:45:05,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash 98225067, now seen corresponding path program 6 times [2024-06-21 15:45:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:05,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303469377] [2024-06-21 15:45:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:08,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:08,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303469377] [2024-06-21 15:45:08,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303469377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:08,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:08,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118836450] [2024-06-21 15:45:08,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:08,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:08,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:08,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:08,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 1190 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) [2024-06-21 15:45:08,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:08,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:08,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:08,981 INFO L124 PetriNetUnfolderBase]: 412/724 cut-off events. [2024-06-21 15:45:08,982 INFO L125 PetriNetUnfolderBase]: For 41209/41212 co-relation queries the response was YES. [2024-06-21 15:45:08,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 724 events. 412/724 cut-off events. For 41209/41212 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3116 event pairs, 86 based on Foata normal form. 4/725 useless extension candidates. Maximal degree in co-relation 4693. Up to 626 conditions per place. [2024-06-21 15:45:08,987 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 29 changer transitions 0/148 dead transitions. [2024-06-21 15:45:08,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 148 transitions, 1577 flow [2024-06-21 15:45:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:45:08,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 15:45:08,988 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 1190 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:45:08,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 148 transitions, 1577 flow [2024-06-21 15:45:09,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 148 transitions, 1388 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:09,058 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 1114 flow [2024-06-21 15:45:09,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1114, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2024-06-21 15:45:09,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-21 15:45:09,058 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 1114 flow [2024-06-21 15:45:09,058 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) [2024-06-21 15:45:09,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:09,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:09,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 15:45:09,059 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)] === [2024-06-21 15:45:09,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1787573981, now seen corresponding path program 10 times [2024-06-21 15:45:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444068799] [2024-06-21 15:45:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444068799] [2024-06-21 15:45:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444068799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:11,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 15:45:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986347354] [2024-06-21 15:45:11,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:11,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 15:45:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 15:45:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 15:45:11,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:11,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 1114 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) [2024-06-21 15:45:11,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:11,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:11,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:11,648 INFO L124 PetriNetUnfolderBase]: 408/718 cut-off events. [2024-06-21 15:45:11,648 INFO L125 PetriNetUnfolderBase]: For 39398/39401 co-relation queries the response was YES. [2024-06-21 15:45:11,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 718 events. 408/718 cut-off events. For 39398/39401 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3093 event pairs, 61 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4369. Up to 552 conditions per place. [2024-06-21 15:45:11,653 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 39 changer transitions 0/148 dead transitions. [2024-06-21 15:45:11,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 148 transitions, 1446 flow [2024-06-21 15:45:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 15:45:11,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 15:45:11,655 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 1114 flow. Second operand 9 states and 103 transitions. [2024-06-21 15:45:11,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 148 transitions, 1446 flow [2024-06-21 15:45:11,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 148 transitions, 1327 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:11,736 INFO L231 Difference]: Finished difference. Result has 160 places, 132 transitions, 1078 flow [2024-06-21 15:45:11,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2024-06-21 15:45:11,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-21 15:45:11,737 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 1078 flow [2024-06-21 15:45:11,737 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) [2024-06-21 15:45:11,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:11,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:11,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 15:45:11,738 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)] === [2024-06-21 15:45:11,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:11,738 INFO L85 PathProgramCache]: Analyzing trace with hash 679658066, now seen corresponding path program 1 times [2024-06-21 15:45:11,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:11,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911588663] [2024-06-21 15:45:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:11,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:13,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:13,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911588663] [2024-06-21 15:45:13,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911588663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:13,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426147603] [2024-06-21 15:45:13,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:13,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:13,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:13,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:13,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 1078 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) [2024-06-21 15:45:13,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:13,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:13,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:14,467 INFO L124 PetriNetUnfolderBase]: 448/790 cut-off events. [2024-06-21 15:45:14,467 INFO L125 PetriNetUnfolderBase]: For 40822/40822 co-relation queries the response was YES. [2024-06-21 15:45:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 790 events. 448/790 cut-off events. For 40822/40822 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3489 event pairs, 81 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 4672. Up to 696 conditions per place. [2024-06-21 15:45:14,472 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 141 selfloop transitions, 22 changer transitions 0/165 dead transitions. [2024-06-21 15:45:14,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 165 transitions, 1582 flow [2024-06-21 15:45:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:45:14,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:45:14,473 INFO L175 Difference]: Start difference. First operand has 160 places, 132 transitions, 1078 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:45:14,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 165 transitions, 1582 flow [2024-06-21 15:45:14,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 165 transitions, 1479 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:14,536 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1183 flow [2024-06-21 15:45:14,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-21 15:45:14,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-21 15:45:14,537 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1183 flow [2024-06-21 15:45:14,538 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) [2024-06-21 15:45:14,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:14,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:14,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 15:45:14,538 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)] === [2024-06-21 15:45:14,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1744275594, now seen corresponding path program 2 times [2024-06-21 15:45:14,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:14,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791937887] [2024-06-21 15:45:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:14,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:16,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:16,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791937887] [2024-06-21 15:45:16,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791937887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:16,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:16,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:16,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945441748] [2024-06-21 15:45:16,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:16,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:16,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1183 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) [2024-06-21 15:45:16,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:16,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:16,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:17,110 INFO L124 PetriNetUnfolderBase]: 452/798 cut-off events. [2024-06-21 15:45:17,111 INFO L125 PetriNetUnfolderBase]: For 42419/42419 co-relation queries the response was YES. [2024-06-21 15:45:17,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 798 events. 452/798 cut-off events. For 42419/42419 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3532 event pairs, 89 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 4732. Up to 678 conditions per place. [2024-06-21 15:45:17,116 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 134 selfloop transitions, 27 changer transitions 0/163 dead transitions. [2024-06-21 15:45:17,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 163 transitions, 1570 flow [2024-06-21 15:45:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:17,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 15:45:17,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 15:45:17,117 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1183 flow. Second operand 9 states and 98 transitions. [2024-06-21 15:45:17,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 163 transitions, 1570 flow [2024-06-21 15:45:17,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 163 transitions, 1536 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 15:45:17,185 INFO L231 Difference]: Finished difference. Result has 172 places, 146 transitions, 1229 flow [2024-06-21 15:45:17,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=172, PETRI_TRANSITIONS=146} [2024-06-21 15:45:17,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-21 15:45:17,186 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 146 transitions, 1229 flow [2024-06-21 15:45:17,186 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) [2024-06-21 15:45:17,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:17,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:17,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 15:45:17,187 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)] === [2024-06-21 15:45:17,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -181048696, now seen corresponding path program 3 times [2024-06-21 15:45:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23994721] [2024-06-21 15:45:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:19,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23994721] [2024-06-21 15:45:19,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23994721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:19,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:19,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389108642] [2024-06-21 15:45:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:19,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:19,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:19,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:19,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 146 transitions, 1229 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) [2024-06-21 15:45:19,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:19,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:19,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:19,701 INFO L124 PetriNetUnfolderBase]: 456/806 cut-off events. [2024-06-21 15:45:19,701 INFO L125 PetriNetUnfolderBase]: For 44096/44096 co-relation queries the response was YES. [2024-06-21 15:45:19,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 806 events. 456/806 cut-off events. For 44096/44096 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3591 event pairs, 89 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4834. Up to 698 conditions per place. [2024-06-21 15:45:19,707 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 139 selfloop transitions, 23 changer transitions 0/164 dead transitions. [2024-06-21 15:45:19,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 164 transitions, 1620 flow [2024-06-21 15:45:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 15:45:19,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-21 15:45:19,708 INFO L175 Difference]: Start difference. First operand has 172 places, 146 transitions, 1229 flow. Second operand 9 states and 97 transitions. [2024-06-21 15:45:19,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 164 transitions, 1620 flow [2024-06-21 15:45:19,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 164 transitions, 1550 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:19,781 INFO L231 Difference]: Finished difference. Result has 174 places, 147 transitions, 1231 flow [2024-06-21 15:45:19,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=174, PETRI_TRANSITIONS=147} [2024-06-21 15:45:19,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-21 15:45:19,782 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 147 transitions, 1231 flow [2024-06-21 15:45:19,782 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) [2024-06-21 15:45:19,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:19,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:19,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 15:45:19,782 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)] === [2024-06-21 15:45:19,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash -973194510, now seen corresponding path program 4 times [2024-06-21 15:45:19,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:19,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560671052] [2024-06-21 15:45:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:21,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560671052] [2024-06-21 15:45:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560671052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:21,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:21,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:21,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440268814] [2024-06-21 15:45:21,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:21,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:21,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:21,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:21,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:21,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:21,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 147 transitions, 1231 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) [2024-06-21 15:45:21,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:21,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:21,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:22,239 INFO L124 PetriNetUnfolderBase]: 460/814 cut-off events. [2024-06-21 15:45:22,239 INFO L125 PetriNetUnfolderBase]: For 43000/43000 co-relation queries the response was YES. [2024-06-21 15:45:22,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4937 conditions, 814 events. 460/814 cut-off events. For 43000/43000 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3606 event pairs, 77 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 4850. Up to 702 conditions per place. [2024-06-21 15:45:22,244 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 143 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2024-06-21 15:45:22,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 1624 flow [2024-06-21 15:45:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 15:45:22,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-21 15:45:22,245 INFO L175 Difference]: Start difference. First operand has 174 places, 147 transitions, 1231 flow. Second operand 9 states and 95 transitions. [2024-06-21 15:45:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 1624 flow [2024-06-21 15:45:22,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 165 transitions, 1564 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:22,320 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1237 flow [2024-06-21 15:45:22,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1237, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2024-06-21 15:45:22,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-21 15:45:22,321 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1237 flow [2024-06-21 15:45:22,321 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) [2024-06-21 15:45:22,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:22,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:22,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 15:45:22,322 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)] === [2024-06-21 15:45:22,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash -884474928, now seen corresponding path program 1 times [2024-06-21 15:45:22,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:22,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091427318] [2024-06-21 15:45:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:24,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:24,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091427318] [2024-06-21 15:45:24,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091427318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:24,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:24,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:24,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064598416] [2024-06-21 15:45:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:24,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:24,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:24,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:24,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1237 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) [2024-06-21 15:45:24,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:24,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:24,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:25,123 INFO L124 PetriNetUnfolderBase]: 466/824 cut-off events. [2024-06-21 15:45:25,123 INFO L125 PetriNetUnfolderBase]: For 45704/45704 co-relation queries the response was YES. [2024-06-21 15:45:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5001 conditions, 824 events. 466/824 cut-off events. For 45704/45704 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3698 event pairs, 85 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 4913. Up to 696 conditions per place. [2024-06-21 15:45:25,128 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 29 changer transitions 0/169 dead transitions. [2024-06-21 15:45:25,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 169 transitions, 1658 flow [2024-06-21 15:45:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:45:25,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 15:45:25,130 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1237 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:45:25,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 169 transitions, 1658 flow [2024-06-21 15:45:25,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 169 transitions, 1602 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:25,204 INFO L231 Difference]: Finished difference. Result has 179 places, 150 transitions, 1284 flow [2024-06-21 15:45:25,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1284, PETRI_PLACES=179, PETRI_TRANSITIONS=150} [2024-06-21 15:45:25,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-21 15:45:25,205 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 150 transitions, 1284 flow [2024-06-21 15:45:25,205 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) [2024-06-21 15:45:25,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:25,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:25,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 15:45:25,206 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)] === [2024-06-21 15:45:25,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:25,206 INFO L85 PathProgramCache]: Analyzing trace with hash -33227614, now seen corresponding path program 2 times [2024-06-21 15:45:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:25,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741317682] [2024-06-21 15:45:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:25,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:27,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:27,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741317682] [2024-06-21 15:45:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741317682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:27,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413380002] [2024-06-21 15:45:27,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:27,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:27,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:27,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 150 transitions, 1284 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) [2024-06-21 15:45:27,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:27,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:27,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:28,074 INFO L124 PetriNetUnfolderBase]: 472/833 cut-off events. [2024-06-21 15:45:28,074 INFO L125 PetriNetUnfolderBase]: For 47116/47116 co-relation queries the response was YES. [2024-06-21 15:45:28,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 833 events. 472/833 cut-off events. For 47116/47116 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3755 event pairs, 73 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5029. Up to 623 conditions per place. [2024-06-21 15:45:28,080 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 47 changer transitions 0/172 dead transitions. [2024-06-21 15:45:28,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 172 transitions, 1714 flow [2024-06-21 15:45:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 15:45:28,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-21 15:45:28,081 INFO L175 Difference]: Start difference. First operand has 179 places, 150 transitions, 1284 flow. Second operand 10 states and 113 transitions. [2024-06-21 15:45:28,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 172 transitions, 1714 flow [2024-06-21 15:45:28,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 172 transitions, 1627 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:28,171 INFO L231 Difference]: Finished difference. Result has 181 places, 152 transitions, 1340 flow [2024-06-21 15:45:28,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1340, PETRI_PLACES=181, PETRI_TRANSITIONS=152} [2024-06-21 15:45:28,172 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-21 15:45:28,172 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 152 transitions, 1340 flow [2024-06-21 15:45:28,172 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) [2024-06-21 15:45:28,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:28,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:28,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 15:45:28,173 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)] === [2024-06-21 15:45:28,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash -33219895, now seen corresponding path program 1 times [2024-06-21 15:45:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941268380] [2024-06-21 15:45:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:30,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:30,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941268380] [2024-06-21 15:45:30,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941268380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:30,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:30,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:30,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081181031] [2024-06-21 15:45:30,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:30,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:30,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:30,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:30,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:30,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:30,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 152 transitions, 1340 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) [2024-06-21 15:45:30,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:30,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:30,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:31,212 INFO L124 PetriNetUnfolderBase]: 470/831 cut-off events. [2024-06-21 15:45:31,212 INFO L125 PetriNetUnfolderBase]: For 46087/46087 co-relation queries the response was YES. [2024-06-21 15:45:31,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5096 conditions, 831 events. 470/831 cut-off events. For 46087/46087 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3754 event pairs, 97 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 5006. Up to 737 conditions per place. [2024-06-21 15:45:31,223 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 139 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-06-21 15:45:31,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 171 transitions, 1783 flow [2024-06-21 15:45:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 15:45:31,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 15:45:31,224 INFO L175 Difference]: Start difference. First operand has 181 places, 152 transitions, 1340 flow. Second operand 10 states and 105 transitions. [2024-06-21 15:45:31,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 171 transitions, 1783 flow [2024-06-21 15:45:31,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1656 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:31,302 INFO L231 Difference]: Finished difference. Result has 183 places, 154 transitions, 1335 flow [2024-06-21 15:45:31,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1335, PETRI_PLACES=183, PETRI_TRANSITIONS=154} [2024-06-21 15:45:31,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-21 15:45:31,303 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 154 transitions, 1335 flow [2024-06-21 15:45:31,303 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) [2024-06-21 15:45:31,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:31,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:31,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 15:45:31,303 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)] === [2024-06-21 15:45:31,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash -33435376, now seen corresponding path program 5 times [2024-06-21 15:45:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:31,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869095873] [2024-06-21 15:45:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:31,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:33,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869095873] [2024-06-21 15:45:33,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869095873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:33,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:33,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:33,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832833140] [2024-06-21 15:45:33,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:33,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:33,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:33,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:33,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:33,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 154 transitions, 1335 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) [2024-06-21 15:45:33,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:33,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:33,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:34,113 INFO L124 PetriNetUnfolderBase]: 474/838 cut-off events. [2024-06-21 15:45:34,113 INFO L125 PetriNetUnfolderBase]: For 49165/49165 co-relation queries the response was YES. [2024-06-21 15:45:34,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 838 events. 474/838 cut-off events. For 49165/49165 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3801 event pairs, 73 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 5008. Up to 677 conditions per place. [2024-06-21 15:45:34,118 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 134 selfloop transitions, 36 changer transitions 0/172 dead transitions. [2024-06-21 15:45:34,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 172 transitions, 1739 flow [2024-06-21 15:45:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 15:45:34,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-21 15:45:34,120 INFO L175 Difference]: Start difference. First operand has 183 places, 154 transitions, 1335 flow. Second operand 9 states and 101 transitions. [2024-06-21 15:45:34,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 172 transitions, 1739 flow [2024-06-21 15:45:34,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 172 transitions, 1637 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:34,200 INFO L231 Difference]: Finished difference. Result has 184 places, 155 transitions, 1333 flow [2024-06-21 15:45:34,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=184, PETRI_TRANSITIONS=155} [2024-06-21 15:45:34,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-21 15:45:34,201 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 155 transitions, 1333 flow [2024-06-21 15:45:34,201 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) [2024-06-21 15:45:34,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:34,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 15:45:34,201 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)] === [2024-06-21 15:45:34,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -38941906, now seen corresponding path program 6 times [2024-06-21 15:45:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263945191] [2024-06-21 15:45:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:36,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:36,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263945191] [2024-06-21 15:45:36,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263945191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:36,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:36,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:36,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696354409] [2024-06-21 15:45:36,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:36,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:36,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:36,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:36,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:36,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:36,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 155 transitions, 1333 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) [2024-06-21 15:45:36,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:36,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:36,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:36,639 INFO L124 PetriNetUnfolderBase]: 478/846 cut-off events. [2024-06-21 15:45:36,640 INFO L125 PetriNetUnfolderBase]: For 49729/49729 co-relation queries the response was YES. [2024-06-21 15:45:36,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5143 conditions, 846 events. 478/846 cut-off events. For 49729/49729 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3869 event pairs, 78 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 5051. Up to 720 conditions per place. [2024-06-21 15:45:36,645 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 142 selfloop transitions, 28 changer transitions 0/172 dead transitions. [2024-06-21 15:45:36,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 1735 flow [2024-06-21 15:45:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 15:45:36,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:45:36,646 INFO L175 Difference]: Start difference. First operand has 184 places, 155 transitions, 1333 flow. Second operand 9 states and 99 transitions. [2024-06-21 15:45:36,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 1735 flow [2024-06-21 15:45:36,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 172 transitions, 1645 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:36,737 INFO L231 Difference]: Finished difference. Result has 186 places, 156 transitions, 1329 flow [2024-06-21 15:45:36,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1329, PETRI_PLACES=186, PETRI_TRANSITIONS=156} [2024-06-21 15:45:36,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-21 15:45:36,738 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 156 transitions, 1329 flow [2024-06-21 15:45:36,738 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) [2024-06-21 15:45:36,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:36,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:36,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 15:45:36,739 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)] === [2024-06-21 15:45:36,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash -33220174, now seen corresponding path program 3 times [2024-06-21 15:45:36,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:36,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235691150] [2024-06-21 15:45:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:36,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:39,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:39,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235691150] [2024-06-21 15:45:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235691150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:39,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:39,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:39,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846822500] [2024-06-21 15:45:39,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:39,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:39,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:39,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:39,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:39,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 156 transitions, 1329 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) [2024-06-21 15:45:39,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:39,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:39,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:39,919 INFO L124 PetriNetUnfolderBase]: 494/872 cut-off events. [2024-06-21 15:45:39,919 INFO L125 PetriNetUnfolderBase]: For 55430/55430 co-relation queries the response was YES. [2024-06-21 15:45:39,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5432 conditions, 872 events. 494/872 cut-off events. For 55430/55430 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3991 event pairs, 74 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 5339. Up to 620 conditions per place. [2024-06-21 15:45:39,925 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 55 changer transitions 0/182 dead transitions. [2024-06-21 15:45:39,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 182 transitions, 1957 flow [2024-06-21 15:45:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 15:45:39,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 15:45:39,926 INFO L175 Difference]: Start difference. First operand has 186 places, 156 transitions, 1329 flow. Second operand 10 states and 116 transitions. [2024-06-21 15:45:39,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 182 transitions, 1957 flow [2024-06-21 15:45:40,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 182 transitions, 1881 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:40,018 INFO L231 Difference]: Finished difference. Result has 189 places, 160 transitions, 1461 flow [2024-06-21 15:45:40,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1461, PETRI_PLACES=189, PETRI_TRANSITIONS=160} [2024-06-21 15:45:40,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-21 15:45:40,019 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 160 transitions, 1461 flow [2024-06-21 15:45:40,019 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) [2024-06-21 15:45:40,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:40,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:40,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 15:45:40,020 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)] === [2024-06-21 15:45:40,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:40,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1600053574, now seen corresponding path program 4 times [2024-06-21 15:45:40,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:40,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001491644] [2024-06-21 15:45:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:40,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:42,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:42,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001491644] [2024-06-21 15:45:42,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001491644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:42,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:42,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:42,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033221652] [2024-06-21 15:45:42,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:42,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:42,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:42,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 160 transitions, 1461 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) [2024-06-21 15:45:42,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:42,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:42,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:43,062 INFO L124 PetriNetUnfolderBase]: 500/882 cut-off events. [2024-06-21 15:45:43,062 INFO L125 PetriNetUnfolderBase]: For 57286/57286 co-relation queries the response was YES. [2024-06-21 15:45:43,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5612 conditions, 882 events. 500/882 cut-off events. For 57286/57286 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4055 event pairs, 76 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 5518. Up to 711 conditions per place. [2024-06-21 15:45:43,069 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 39 changer transitions 0/181 dead transitions. [2024-06-21 15:45:43,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 181 transitions, 1913 flow [2024-06-21 15:45:43,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 15:45:43,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 15:45:43,070 INFO L175 Difference]: Start difference. First operand has 189 places, 160 transitions, 1461 flow. Second operand 10 states and 111 transitions. [2024-06-21 15:45:43,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 181 transitions, 1913 flow [2024-06-21 15:45:43,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 181 transitions, 1798 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-21 15:45:43,169 INFO L231 Difference]: Finished difference. Result has 193 places, 162 transitions, 1481 flow [2024-06-21 15:45:43,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=183, 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=10, PETRI_FLOW=1481, PETRI_PLACES=193, PETRI_TRANSITIONS=162} [2024-06-21 15:45:43,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-21 15:45:43,170 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 162 transitions, 1481 flow [2024-06-21 15:45:43,170 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) [2024-06-21 15:45:43,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:43,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 15:45:43,171 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)] === [2024-06-21 15:45:43,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1605569776, now seen corresponding path program 7 times [2024-06-21 15:45:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083384270] [2024-06-21 15:45:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083384270] [2024-06-21 15:45:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083384270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:45,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:45,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251193928] [2024-06-21 15:45:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:45,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:45,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 162 transitions, 1481 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) [2024-06-21 15:45:45,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:45,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:45,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:45,862 INFO L124 PetriNetUnfolderBase]: 504/890 cut-off events. [2024-06-21 15:45:45,862 INFO L125 PetriNetUnfolderBase]: For 59023/59023 co-relation queries the response was YES. [2024-06-21 15:45:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 890 events. 504/890 cut-off events. For 59023/59023 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4117 event pairs, 78 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 5595. Up to 764 conditions per place. [2024-06-21 15:45:45,868 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-21 15:45:45,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 179 transitions, 1899 flow [2024-06-21 15:45:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 15:45:45,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 15:45:45,869 INFO L175 Difference]: Start difference. First operand has 193 places, 162 transitions, 1481 flow. Second operand 9 states and 98 transitions. [2024-06-21 15:45:45,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 179 transitions, 1899 flow [2024-06-21 15:45:45,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 179 transitions, 1790 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 15:45:45,975 INFO L231 Difference]: Finished difference. Result has 194 places, 163 transitions, 1458 flow [2024-06-21 15:45:45,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1458, PETRI_PLACES=194, PETRI_TRANSITIONS=163} [2024-06-21 15:45:45,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-21 15:45:45,976 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 163 transitions, 1458 flow [2024-06-21 15:45:45,976 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) [2024-06-21 15:45:45,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:45,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:45,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 15:45:45,976 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)] === [2024-06-21 15:45:45,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:45,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1018901374, now seen corresponding path program 5 times [2024-06-21 15:45:45,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:45,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655738653] [2024-06-21 15:45:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:45,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655738653] [2024-06-21 15:45:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655738653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:48,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:48,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:48,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409863533] [2024-06-21 15:45:48,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:48,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:48,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:48,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:48,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:48,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:48,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 163 transitions, 1458 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) [2024-06-21 15:45:48,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:48,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:48,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:48,860 INFO L124 PetriNetUnfolderBase]: 500/884 cut-off events. [2024-06-21 15:45:48,860 INFO L125 PetriNetUnfolderBase]: For 56479/56479 co-relation queries the response was YES. [2024-06-21 15:45:48,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 884 events. 500/884 cut-off events. For 56479/56479 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4093 event pairs, 80 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 5378. Up to 748 conditions per place. [2024-06-21 15:45:48,866 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 31 changer transitions 0/181 dead transitions. [2024-06-21 15:45:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 181 transitions, 1858 flow [2024-06-21 15:45:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:45:48,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-21 15:45:48,868 INFO L175 Difference]: Start difference. First operand has 194 places, 163 transitions, 1458 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:45:48,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 181 transitions, 1858 flow [2024-06-21 15:45:48,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 181 transitions, 1758 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:48,958 INFO L231 Difference]: Finished difference. Result has 197 places, 163 transitions, 1425 flow [2024-06-21 15:45:48,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1425, PETRI_PLACES=197, PETRI_TRANSITIONS=163} [2024-06-21 15:45:48,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-21 15:45:48,959 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 163 transitions, 1425 flow [2024-06-21 15:45:48,959 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) [2024-06-21 15:45:48,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:48,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:48,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 15:45:48,960 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)] === [2024-06-21 15:45:48,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1331598580, now seen corresponding path program 1 times [2024-06-21 15:45:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:48,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996732080] [2024-06-21 15:45:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:48,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:51,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:51,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996732080] [2024-06-21 15:45:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996732080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:51,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:51,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662714145] [2024-06-21 15:45:51,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:51,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:51,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:51,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:51,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:51,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 163 transitions, 1425 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) [2024-06-21 15:45:51,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:51,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:51,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:52,202 INFO L124 PetriNetUnfolderBase]: 508/902 cut-off events. [2024-06-21 15:45:52,202 INFO L125 PetriNetUnfolderBase]: For 62629/62632 co-relation queries the response was YES. [2024-06-21 15:45:52,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 902 events. 508/902 cut-off events. For 62629/62632 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4202 event pairs, 105 based on Foata normal form. 6/905 useless extension candidates. Maximal degree in co-relation 5446. Up to 808 conditions per place. [2024-06-21 15:45:52,210 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2024-06-21 15:45:52,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 185 transitions, 1899 flow [2024-06-21 15:45:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:45:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:45:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:45:52,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 15:45:52,211 INFO L175 Difference]: Start difference. First operand has 197 places, 163 transitions, 1425 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:45:52,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 185 transitions, 1899 flow [2024-06-21 15:45:52,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 185 transitions, 1808 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:52,331 INFO L231 Difference]: Finished difference. Result has 199 places, 164 transitions, 1420 flow [2024-06-21 15:45:52,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1420, PETRI_PLACES=199, PETRI_TRANSITIONS=164} [2024-06-21 15:45:52,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-21 15:45:52,332 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 164 transitions, 1420 flow [2024-06-21 15:45:52,332 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) [2024-06-21 15:45:52,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:52,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:52,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 15:45:52,332 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)] === [2024-06-21 15:45:52,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1257622836, now seen corresponding path program 8 times [2024-06-21 15:45:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:52,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669276632] [2024-06-21 15:45:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:52,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669276632] [2024-06-21 15:45:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669276632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:54,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:54,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:45:54,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124766809] [2024-06-21 15:45:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:45:54,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:45:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:45:54,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:54,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 164 transitions, 1420 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) [2024-06-21 15:45:54,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:54,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:54,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:55,452 INFO L124 PetriNetUnfolderBase]: 512/910 cut-off events. [2024-06-21 15:45:55,453 INFO L125 PetriNetUnfolderBase]: For 60345/60348 co-relation queries the response was YES. [2024-06-21 15:45:55,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 910 events. 512/910 cut-off events. For 60345/60348 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4227 event pairs, 68 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 5489. Up to 695 conditions per place. [2024-06-21 15:45:55,459 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 48 changer transitions 0/181 dead transitions. [2024-06-21 15:45:55,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 181 transitions, 1846 flow [2024-06-21 15:45:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:45:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:45:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 15:45:55,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 15:45:55,460 INFO L175 Difference]: Start difference. First operand has 199 places, 164 transitions, 1420 flow. Second operand 9 states and 102 transitions. [2024-06-21 15:45:55,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 181 transitions, 1846 flow [2024-06-21 15:45:55,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 181 transitions, 1770 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 15:45:55,570 INFO L231 Difference]: Finished difference. Result has 199 places, 165 transitions, 1474 flow [2024-06-21 15:45:55,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1474, PETRI_PLACES=199, PETRI_TRANSITIONS=165} [2024-06-21 15:45:55,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-21 15:45:55,571 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 165 transitions, 1474 flow [2024-06-21 15:45:55,571 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) [2024-06-21 15:45:55,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:55,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:55,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 15:45:55,572 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)] === [2024-06-21 15:45:55,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash -676699956, now seen corresponding path program 2 times [2024-06-21 15:45:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:55,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537267372] [2024-06-21 15:45:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:55,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:45:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:45:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:45:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537267372] [2024-06-21 15:45:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537267372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:45:58,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:45:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:45:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181815258] [2024-06-21 15:45:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:45:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:45:58,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:45:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:45:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:45:58,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:45:58,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 165 transitions, 1474 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) [2024-06-21 15:45:58,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:45:58,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:45:58,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:45:58,647 INFO L124 PetriNetUnfolderBase]: 534/950 cut-off events. [2024-06-21 15:45:58,647 INFO L125 PetriNetUnfolderBase]: For 76795/76795 co-relation queries the response was YES. [2024-06-21 15:45:58,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 950 events. 534/950 cut-off events. For 76795/76795 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4503 event pairs, 127 based on Foata normal form. 4/953 useless extension candidates. Maximal degree in co-relation 6073. Up to 854 conditions per place. [2024-06-21 15:45:58,654 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 161 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2024-06-21 15:45:58,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 182 transitions, 2084 flow [2024-06-21 15:45:58,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:45:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:45:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 15:45:58,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-21 15:45:58,656 INFO L175 Difference]: Start difference. First operand has 199 places, 165 transitions, 1474 flow. Second operand 10 states and 102 transitions. [2024-06-21 15:45:58,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 182 transitions, 2084 flow [2024-06-21 15:45:58,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 182 transitions, 1964 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 15:45:58,768 INFO L231 Difference]: Finished difference. Result has 202 places, 167 transitions, 1474 flow [2024-06-21 15:45:58,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1474, PETRI_PLACES=202, PETRI_TRANSITIONS=167} [2024-06-21 15:45:58,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-21 15:45:58,768 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 167 transitions, 1474 flow [2024-06-21 15:45:58,768 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) [2024-06-21 15:45:58,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:45:58,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:45:58,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 15:45:58,769 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)] === [2024-06-21 15:45:58,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:45:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1953698614, now seen corresponding path program 9 times [2024-06-21 15:45:58,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:45:58,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124712354] [2024-06-21 15:45:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:45:58,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:45:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:00,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124712354] [2024-06-21 15:46:00,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124712354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:00,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:00,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428980762] [2024-06-21 15:46:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:00,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:00,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:00,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:00,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:00,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 167 transitions, 1474 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) [2024-06-21 15:46:00,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:00,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:00,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:01,302 INFO L124 PetriNetUnfolderBase]: 538/960 cut-off events. [2024-06-21 15:46:01,303 INFO L125 PetriNetUnfolderBase]: For 74316/74319 co-relation queries the response was YES. [2024-06-21 15:46:01,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6150 conditions, 960 events. 538/960 cut-off events. For 74316/74319 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4558 event pairs, 90 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6049. Up to 803 conditions per place. [2024-06-21 15:46:01,309 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 34 changer transitions 0/185 dead transitions. [2024-06-21 15:46:01,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 185 transitions, 1912 flow [2024-06-21 15:46:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:46:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:46:01,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-21 15:46:01,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-21 15:46:01,311 INFO L175 Difference]: Start difference. First operand has 202 places, 167 transitions, 1474 flow. Second operand 9 states and 103 transitions. [2024-06-21 15:46:01,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 185 transitions, 1912 flow [2024-06-21 15:46:01,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 185 transitions, 1849 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-21 15:46:01,439 INFO L231 Difference]: Finished difference. Result has 205 places, 168 transitions, 1515 flow [2024-06-21 15:46:01,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1515, PETRI_PLACES=205, PETRI_TRANSITIONS=168} [2024-06-21 15:46:01,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-21 15:46:01,441 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 168 transitions, 1515 flow [2024-06-21 15:46:01,441 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) [2024-06-21 15:46:01,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:01,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:01,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 15:46:01,442 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)] === [2024-06-21 15:46:01,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1257407634, now seen corresponding path program 6 times [2024-06-21 15:46:01,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70837581] [2024-06-21 15:46:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:03,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:03,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70837581] [2024-06-21 15:46:03,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70837581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:03,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:03,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:03,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562394133] [2024-06-21 15:46:03,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:03,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:03,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:03,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:03,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:04,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:04,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 168 transitions, 1515 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) [2024-06-21 15:46:04,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:04,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:04,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:04,732 INFO L124 PetriNetUnfolderBase]: 554/986 cut-off events. [2024-06-21 15:46:04,733 INFO L125 PetriNetUnfolderBase]: For 81191/81194 co-relation queries the response was YES. [2024-06-21 15:46:04,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6532 conditions, 986 events. 554/986 cut-off events. For 81191/81194 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4712 event pairs, 78 based on Foata normal form. 2/982 useless extension candidates. Maximal degree in co-relation 6429. Up to 726 conditions per place. [2024-06-21 15:46:04,741 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 57 changer transitions 0/194 dead transitions. [2024-06-21 15:46:04,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 194 transitions, 2191 flow [2024-06-21 15:46:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 15:46:04,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 15:46:04,742 INFO L175 Difference]: Start difference. First operand has 205 places, 168 transitions, 1515 flow. Second operand 10 states and 119 transitions. [2024-06-21 15:46:04,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 194 transitions, 2191 flow [2024-06-21 15:46:04,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 194 transitions, 2097 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 15:46:04,890 INFO L231 Difference]: Finished difference. Result has 208 places, 172 transitions, 1640 flow [2024-06-21 15:46:04,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1640, PETRI_PLACES=208, PETRI_TRANSITIONS=172} [2024-06-21 15:46:04,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-21 15:46:04,891 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 172 transitions, 1640 flow [2024-06-21 15:46:04,891 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) [2024-06-21 15:46:04,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:04,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 15:46:04,891 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)] === [2024-06-21 15:46:04,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash 332469754, now seen corresponding path program 7 times [2024-06-21 15:46:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433125869] [2024-06-21 15:46:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:07,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433125869] [2024-06-21 15:46:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433125869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:07,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:07,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092661593] [2024-06-21 15:46:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:07,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:07,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:07,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 172 transitions, 1640 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) [2024-06-21 15:46:07,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:07,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:07,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:08,182 INFO L124 PetriNetUnfolderBase]: 570/1012 cut-off events. [2024-06-21 15:46:08,182 INFO L125 PetriNetUnfolderBase]: For 89041/89044 co-relation queries the response was YES. [2024-06-21 15:46:08,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 1012 events. 570/1012 cut-off events. For 89041/89044 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4862 event pairs, 93 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 6872. Up to 798 conditions per place. [2024-06-21 15:46:08,191 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 45 changer transitions 0/198 dead transitions. [2024-06-21 15:46:08,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 198 transitions, 2334 flow [2024-06-21 15:46:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 15:46:08,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-21 15:46:08,192 INFO L175 Difference]: Start difference. First operand has 208 places, 172 transitions, 1640 flow. Second operand 10 states and 118 transitions. [2024-06-21 15:46:08,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 198 transitions, 2334 flow [2024-06-21 15:46:08,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 198 transitions, 2209 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 15:46:08,348 INFO L231 Difference]: Finished difference. Result has 212 places, 176 transitions, 1718 flow [2024-06-21 15:46:08,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1718, PETRI_PLACES=212, PETRI_TRANSITIONS=176} [2024-06-21 15:46:08,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-21 15:46:08,349 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 176 transitions, 1718 flow [2024-06-21 15:46:08,349 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) [2024-06-21 15:46:08,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:08,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:08,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 15:46:08,349 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)] === [2024-06-21 15:46:08,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1257415074, now seen corresponding path program 8 times [2024-06-21 15:46:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537220873] [2024-06-21 15:46:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537220873] [2024-06-21 15:46:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537220873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:10,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:10,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:10,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211237638] [2024-06-21 15:46:10,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:10,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:10,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:10,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:10,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:10,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 176 transitions, 1718 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) [2024-06-21 15:46:10,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:10,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:10,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:11,374 INFO L124 PetriNetUnfolderBase]: 576/1022 cut-off events. [2024-06-21 15:46:11,374 INFO L125 PetriNetUnfolderBase]: For 91349/91352 co-relation queries the response was YES. [2024-06-21 15:46:11,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 1022 events. 576/1022 cut-off events. For 91349/91352 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4939 event pairs, 81 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 7000. Up to 783 conditions per place. [2024-06-21 15:46:11,382 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 54 changer transitions 0/198 dead transitions. [2024-06-21 15:46:11,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 198 transitions, 2202 flow [2024-06-21 15:46:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 15:46:11,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 15:46:11,383 INFO L175 Difference]: Start difference. First operand has 212 places, 176 transitions, 1718 flow. Second operand 10 states and 116 transitions. [2024-06-21 15:46:11,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 198 transitions, 2202 flow [2024-06-21 15:46:11,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 198 transitions, 2086 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-21 15:46:11,559 INFO L231 Difference]: Finished difference. Result has 216 places, 178 transitions, 1761 flow [2024-06-21 15:46:11,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1761, PETRI_PLACES=216, PETRI_TRANSITIONS=178} [2024-06-21 15:46:11,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-21 15:46:11,560 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 178 transitions, 1761 flow [2024-06-21 15:46:11,560 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) [2024-06-21 15:46:11,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:11,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:11,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 15:46:11,560 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)] === [2024-06-21 15:46:11,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1962652296, now seen corresponding path program 3 times [2024-06-21 15:46:11,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:11,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377566167] [2024-06-21 15:46:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:14,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:14,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377566167] [2024-06-21 15:46:14,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377566167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:14,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:14,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:14,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573054033] [2024-06-21 15:46:14,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:14,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:14,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:14,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:14,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 178 transitions, 1761 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) [2024-06-21 15:46:14,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:14,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:14,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:14,757 INFO L124 PetriNetUnfolderBase]: 584/1036 cut-off events. [2024-06-21 15:46:14,757 INFO L125 PetriNetUnfolderBase]: For 99101/99101 co-relation queries the response was YES. [2024-06-21 15:46:14,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 1036 events. 584/1036 cut-off events. For 99101/99101 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5059 event pairs, 141 based on Foata normal form. 4/1039 useless extension candidates. Maximal degree in co-relation 7159. Up to 974 conditions per place. [2024-06-21 15:46:14,766 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 20 changer transitions 0/194 dead transitions. [2024-06-21 15:46:14,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 194 transitions, 2219 flow [2024-06-21 15:46:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-21 15:46:14,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-21 15:46:14,784 INFO L175 Difference]: Start difference. First operand has 216 places, 178 transitions, 1761 flow. Second operand 11 states and 110 transitions. [2024-06-21 15:46:14,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 194 transitions, 2219 flow [2024-06-21 15:46:14,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 194 transitions, 2080 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:14,967 INFO L231 Difference]: Finished difference. Result has 219 places, 179 transitions, 1702 flow [2024-06-21 15:46:14,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1702, PETRI_PLACES=219, PETRI_TRANSITIONS=179} [2024-06-21 15:46:14,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-21 15:46:14,967 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 179 transitions, 1702 flow [2024-06-21 15:46:14,968 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) [2024-06-21 15:46:14,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:14,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 15:46:14,968 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)] === [2024-06-21 15:46:14,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash -120797348, now seen corresponding path program 10 times [2024-06-21 15:46:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419482547] [2024-06-21 15:46:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:17,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419482547] [2024-06-21 15:46:17,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419482547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:17,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:17,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056043531] [2024-06-21 15:46:17,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:17,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:17,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:17,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:17,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:17,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 179 transitions, 1702 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) [2024-06-21 15:46:17,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:17,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:17,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:18,015 INFO L124 PetriNetUnfolderBase]: 588/1046 cut-off events. [2024-06-21 15:46:18,015 INFO L125 PetriNetUnfolderBase]: For 96212/96215 co-relation queries the response was YES. [2024-06-21 15:46:18,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1046 events. 588/1046 cut-off events. For 96212/96215 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5083 event pairs, 106 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7127. Up to 903 conditions per place. [2024-06-21 15:46:18,024 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 162 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-21 15:46:18,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 195 transitions, 2156 flow [2024-06-21 15:46:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:46:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:46:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 15:46:18,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:46:18,025 INFO L175 Difference]: Start difference. First operand has 219 places, 179 transitions, 1702 flow. Second operand 9 states and 99 transitions. [2024-06-21 15:46:18,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 195 transitions, 2156 flow [2024-06-21 15:46:18,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 2088 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:18,206 INFO L231 Difference]: Finished difference. Result has 219 places, 180 transitions, 1734 flow [2024-06-21 15:46:18,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=219, PETRI_TRANSITIONS=180} [2024-06-21 15:46:18,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-21 15:46:18,207 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 180 transitions, 1734 flow [2024-06-21 15:46:18,207 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) [2024-06-21 15:46:18,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:18,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:18,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 15:46:18,208 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)] === [2024-06-21 15:46:18,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:18,208 INFO L85 PathProgramCache]: Analyzing trace with hash -688137716, now seen corresponding path program 9 times [2024-06-21 15:46:18,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:18,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082922903] [2024-06-21 15:46:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:18,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:20,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:20,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082922903] [2024-06-21 15:46:20,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082922903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:20,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:20,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:20,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967449800] [2024-06-21 15:46:20,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:20,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:20,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:20,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:20,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:20,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:20,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 180 transitions, 1734 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) [2024-06-21 15:46:20,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:20,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:20,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:21,380 INFO L124 PetriNetUnfolderBase]: 610/1080 cut-off events. [2024-06-21 15:46:21,380 INFO L125 PetriNetUnfolderBase]: For 110772/110772 co-relation queries the response was YES. [2024-06-21 15:46:21,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1080 events. 610/1080 cut-off events. For 110772/110772 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5310 event pairs, 146 based on Foata normal form. 4/1083 useless extension candidates. Maximal degree in co-relation 7578. Up to 1009 conditions per place. [2024-06-21 15:46:21,389 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-21 15:46:21,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 199 transitions, 2428 flow [2024-06-21 15:46:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:46:21,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 15:46:21,390 INFO L175 Difference]: Start difference. First operand has 219 places, 180 transitions, 1734 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:46:21,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 199 transitions, 2428 flow [2024-06-21 15:46:21,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 199 transitions, 2338 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 15:46:21,601 INFO L231 Difference]: Finished difference. Result has 222 places, 185 transitions, 1819 flow [2024-06-21 15:46:21,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1819, PETRI_PLACES=222, PETRI_TRANSITIONS=185} [2024-06-21 15:46:21,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-21 15:46:21,602 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 185 transitions, 1819 flow [2024-06-21 15:46:21,602 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) [2024-06-21 15:46:21,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:21,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:21,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 15:46:21,602 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)] === [2024-06-21 15:46:21,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash -120801068, now seen corresponding path program 11 times [2024-06-21 15:46:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:21,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323108140] [2024-06-21 15:46:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:23,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323108140] [2024-06-21 15:46:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323108140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:23,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841139569] [2024-06-21 15:46:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:23,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:23,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:23,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 185 transitions, 1819 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) [2024-06-21 15:46:23,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:23,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:23,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:24,247 INFO L124 PetriNetUnfolderBase]: 607/1077 cut-off events. [2024-06-21 15:46:24,248 INFO L125 PetriNetUnfolderBase]: For 101767/101770 co-relation queries the response was YES. [2024-06-21 15:46:24,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1077 events. 607/1077 cut-off events. For 101767/101770 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5276 event pairs, 104 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 7389. Up to 934 conditions per place. [2024-06-21 15:46:24,256 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 168 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2024-06-21 15:46:24,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 200 transitions, 2251 flow [2024-06-21 15:46:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 15:46:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 15:46:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 15:46:24,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-21 15:46:24,258 INFO L175 Difference]: Start difference. First operand has 222 places, 185 transitions, 1819 flow. Second operand 9 states and 98 transitions. [2024-06-21 15:46:24,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 200 transitions, 2251 flow [2024-06-21 15:46:24,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 200 transitions, 2155 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-21 15:46:24,482 INFO L231 Difference]: Finished difference. Result has 225 places, 185 transitions, 1787 flow [2024-06-21 15:46:24,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1787, PETRI_PLACES=225, PETRI_TRANSITIONS=185} [2024-06-21 15:46:24,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-21 15:46:24,483 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 185 transitions, 1787 flow [2024-06-21 15:46:24,483 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) [2024-06-21 15:46:24,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:24,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:24,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 15:46:24,483 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)] === [2024-06-21 15:46:24,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash -688127796, now seen corresponding path program 4 times [2024-06-21 15:46:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:24,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780320126] [2024-06-21 15:46:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:24,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:27,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780320126] [2024-06-21 15:46:27,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780320126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:27,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:27,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205913314] [2024-06-21 15:46:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:27,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:27,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:27,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 185 transitions, 1787 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) [2024-06-21 15:46:27,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:27,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:27,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:28,487 INFO L124 PetriNetUnfolderBase]: 601/1065 cut-off events. [2024-06-21 15:46:28,487 INFO L125 PetriNetUnfolderBase]: For 97546/97546 co-relation queries the response was YES. [2024-06-21 15:46:28,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7097 conditions, 1065 events. 601/1065 cut-off events. For 97546/97546 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5209 event pairs, 137 based on Foata normal form. 4/1068 useless extension candidates. Maximal degree in co-relation 6984. Up to 965 conditions per place. [2024-06-21 15:46:28,496 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2024-06-21 15:46:28,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 199 transitions, 2217 flow [2024-06-21 15:46:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-21 15:46:28,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-21 15:46:28,498 INFO L175 Difference]: Start difference. First operand has 225 places, 185 transitions, 1787 flow. Second operand 11 states and 108 transitions. [2024-06-21 15:46:28,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 199 transitions, 2217 flow [2024-06-21 15:46:28,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 199 transitions, 2062 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:28,734 INFO L231 Difference]: Finished difference. Result has 228 places, 185 transitions, 1684 flow [2024-06-21 15:46:28,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1684, PETRI_PLACES=228, PETRI_TRANSITIONS=185} [2024-06-21 15:46:28,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-21 15:46:28,735 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 185 transitions, 1684 flow [2024-06-21 15:46:28,735 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) [2024-06-21 15:46:28,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:28,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:28,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 15:46:28,736 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)] === [2024-06-21 15:46:28,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:28,736 INFO L85 PathProgramCache]: Analyzing trace with hash 332462314, now seen corresponding path program 10 times [2024-06-21 15:46:28,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:28,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55516645] [2024-06-21 15:46:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:28,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:31,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55516645] [2024-06-21 15:46:31,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55516645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:31,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:31,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:31,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815781410] [2024-06-21 15:46:31,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:31,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:31,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:31,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:31,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:31,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:31,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 185 transitions, 1684 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) [2024-06-21 15:46:31,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:31,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:31,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:31,980 INFO L124 PetriNetUnfolderBase]: 607/1077 cut-off events. [2024-06-21 15:46:31,980 INFO L125 PetriNetUnfolderBase]: For 93168/93171 co-relation queries the response was YES. [2024-06-21 15:46:31,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7026 conditions, 1077 events. 607/1077 cut-off events. For 93168/93171 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5296 event pairs, 98 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 6912. Up to 888 conditions per place. [2024-06-21 15:46:31,988 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 163 selfloop transitions, 42 changer transitions 0/207 dead transitions. [2024-06-21 15:46:31,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 207 transitions, 2186 flow [2024-06-21 15:46:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 15:46:31,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 15:46:31,989 INFO L175 Difference]: Start difference. First operand has 228 places, 185 transitions, 1684 flow. Second operand 10 states and 115 transitions. [2024-06-21 15:46:31,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 207 transitions, 2186 flow [2024-06-21 15:46:32,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 207 transitions, 2072 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-21 15:46:32,206 INFO L231 Difference]: Finished difference. Result has 223 places, 187 transitions, 1705 flow [2024-06-21 15:46:32,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1705, PETRI_PLACES=223, PETRI_TRANSITIONS=187} [2024-06-21 15:46:32,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-21 15:46:32,207 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 187 transitions, 1705 flow [2024-06-21 15:46:32,207 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) [2024-06-21 15:46:32,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:32,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 15:46:32,207 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)] === [2024-06-21 15:46:32,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1002096416, now seen corresponding path program 11 times [2024-06-21 15:46:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799005852] [2024-06-21 15:46:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799005852] [2024-06-21 15:46:34,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799005852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:34,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018143848] [2024-06-21 15:46:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:34,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:34,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:34,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 187 transitions, 1705 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) [2024-06-21 15:46:34,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:34,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:34,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:35,678 INFO L124 PetriNetUnfolderBase]: 613/1087 cut-off events. [2024-06-21 15:46:35,679 INFO L125 PetriNetUnfolderBase]: For 88953/88956 co-relation queries the response was YES. [2024-06-21 15:46:35,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 1087 events. 613/1087 cut-off events. For 88953/88956 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5333 event pairs, 53 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 6849. Up to 457 conditions per place. [2024-06-21 15:46:35,687 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 93 changer transitions 0/216 dead transitions. [2024-06-21 15:46:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 216 transitions, 2653 flow [2024-06-21 15:46:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 15:46:35,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 15:46:35,688 INFO L175 Difference]: Start difference. First operand has 223 places, 187 transitions, 1705 flow. Second operand 10 states and 125 transitions. [2024-06-21 15:46:35,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 216 transitions, 2653 flow [2024-06-21 15:46:35,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 216 transitions, 2538 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:35,900 INFO L231 Difference]: Finished difference. Result has 226 places, 193 transitions, 1996 flow [2024-06-21 15:46:35,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=226, PETRI_TRANSITIONS=193} [2024-06-21 15:46:35,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-21 15:46:35,901 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 193 transitions, 1996 flow [2024-06-21 15:46:35,901 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) [2024-06-21 15:46:35,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:35,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:35,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 15:46:35,902 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)] === [2024-06-21 15:46:35,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash -115284866, now seen corresponding path program 12 times [2024-06-21 15:46:35,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:35,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583199764] [2024-06-21 15:46:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:35,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:38,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:38,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583199764] [2024-06-21 15:46:38,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583199764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:38,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:38,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:38,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609509896] [2024-06-21 15:46:38,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:38,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:38,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:38,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:38,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:38,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:38,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 193 transitions, 1996 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) [2024-06-21 15:46:38,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:38,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:38,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:39,012 INFO L124 PetriNetUnfolderBase]: 619/1097 cut-off events. [2024-06-21 15:46:39,013 INFO L125 PetriNetUnfolderBase]: For 91682/91685 co-relation queries the response was YES. [2024-06-21 15:46:39,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7294 conditions, 1097 events. 619/1097 cut-off events. For 91682/91685 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5425 event pairs, 95 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 7182. Up to 930 conditions per place. [2024-06-21 15:46:39,022 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 37 changer transitions 0/214 dead transitions. [2024-06-21 15:46:39,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 214 transitions, 2515 flow [2024-06-21 15:46:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 15:46:39,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-21 15:46:39,023 INFO L175 Difference]: Start difference. First operand has 226 places, 193 transitions, 1996 flow. Second operand 10 states and 113 transitions. [2024-06-21 15:46:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 214 transitions, 2515 flow [2024-06-21 15:46:39,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 214 transitions, 2362 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-21 15:46:39,250 INFO L231 Difference]: Finished difference. Result has 231 places, 195 transitions, 1975 flow [2024-06-21 15:46:39,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1975, PETRI_PLACES=231, PETRI_TRANSITIONS=195} [2024-06-21 15:46:39,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-21 15:46:39,251 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 195 transitions, 1975 flow [2024-06-21 15:46:39,251 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) [2024-06-21 15:46:39,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:39,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:39,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 15:46:39,251 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)] === [2024-06-21 15:46:39,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash -936036118, now seen corresponding path program 13 times [2024-06-21 15:46:39,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:39,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404327171] [2024-06-21 15:46:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:39,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404327171] [2024-06-21 15:46:42,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404327171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:42,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:42,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:42,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764771419] [2024-06-21 15:46:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:42,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:42,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:42,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:42,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:42,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 195 transitions, 1975 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) [2024-06-21 15:46:42,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:42,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:42,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:42,699 INFO L124 PetriNetUnfolderBase]: 615/1091 cut-off events. [2024-06-21 15:46:42,700 INFO L125 PetriNetUnfolderBase]: For 86772/86775 co-relation queries the response was YES. [2024-06-21 15:46:42,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7041 conditions, 1091 events. 615/1091 cut-off events. For 86772/86775 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5385 event pairs, 67 based on Foata normal form. 2/1087 useless extension candidates. Maximal degree in co-relation 6927. Up to 760 conditions per place. [2024-06-21 15:46:42,710 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 75 changer transitions 0/214 dead transitions. [2024-06-21 15:46:42,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 214 transitions, 2447 flow [2024-06-21 15:46:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 15:46:42,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 15:46:42,712 INFO L175 Difference]: Start difference. First operand has 231 places, 195 transitions, 1975 flow. Second operand 10 states and 115 transitions. [2024-06-21 15:46:42,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 214 transitions, 2447 flow [2024-06-21 15:46:42,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 214 transitions, 2304 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-21 15:46:42,948 INFO L231 Difference]: Finished difference. Result has 233 places, 195 transitions, 1987 flow [2024-06-21 15:46:42,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1987, PETRI_PLACES=233, PETRI_TRANSITIONS=195} [2024-06-21 15:46:42,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-21 15:46:42,950 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 195 transitions, 1987 flow [2024-06-21 15:46:42,950 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) [2024-06-21 15:46:42,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:42,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:42,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 15:46:42,950 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)] === [2024-06-21 15:46:42,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash -935759288, now seen corresponding path program 5 times [2024-06-21 15:46:42,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:42,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046907411] [2024-06-21 15:46:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:42,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:45,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:45,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046907411] [2024-06-21 15:46:45,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046907411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:45,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:45,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:45,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063845832] [2024-06-21 15:46:45,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:45,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:45,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:45,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:45,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:45,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 195 transitions, 1987 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) [2024-06-21 15:46:45,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:45,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:45,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:46,096 INFO L124 PetriNetUnfolderBase]: 623/1108 cut-off events. [2024-06-21 15:46:46,096 INFO L125 PetriNetUnfolderBase]: For 95477/95480 co-relation queries the response was YES. [2024-06-21 15:46:46,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7197 conditions, 1108 events. 623/1108 cut-off events. For 95477/95480 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5523 event pairs, 106 based on Foata normal form. 6/1109 useless extension candidates. Maximal degree in co-relation 7082. Up to 915 conditions per place. [2024-06-21 15:46:46,105 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 49 changer transitions 0/215 dead transitions. [2024-06-21 15:46:46,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 215 transitions, 2512 flow [2024-06-21 15:46:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 15:46:46,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-21 15:46:46,107 INFO L175 Difference]: Start difference. First operand has 233 places, 195 transitions, 1987 flow. Second operand 11 states and 118 transitions. [2024-06-21 15:46:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 215 transitions, 2512 flow [2024-06-21 15:46:46,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 215 transitions, 2357 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:46,344 INFO L231 Difference]: Finished difference. Result has 235 places, 196 transitions, 1974 flow [2024-06-21 15:46:46,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1974, PETRI_PLACES=235, PETRI_TRANSITIONS=196} [2024-06-21 15:46:46,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-21 15:46:46,344 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 196 transitions, 1974 flow [2024-06-21 15:46:46,345 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) [2024-06-21 15:46:46,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:46,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:46,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 15:46:46,345 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)] === [2024-06-21 15:46:46,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1192738438, now seen corresponding path program 14 times [2024-06-21 15:46:46,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:46,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709340704] [2024-06-21 15:46:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:46,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709340704] [2024-06-21 15:46:48,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709340704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:48,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:48,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:46:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243890902] [2024-06-21 15:46:48,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:46:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:46:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:46:48,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:48,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 196 transitions, 1974 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) [2024-06-21 15:46:48,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:48,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:48,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:49,239 INFO L124 PetriNetUnfolderBase]: 619/1101 cut-off events. [2024-06-21 15:46:49,239 INFO L125 PetriNetUnfolderBase]: For 85020/85023 co-relation queries the response was YES. [2024-06-21 15:46:49,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6927 conditions, 1101 events. 619/1101 cut-off events. For 85020/85023 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5458 event pairs, 83 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 6811. Up to 876 conditions per place. [2024-06-21 15:46:49,248 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 51 changer transitions 0/214 dead transitions. [2024-06-21 15:46:49,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 214 transitions, 2442 flow [2024-06-21 15:46:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:46:49,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 15:46:49,250 INFO L175 Difference]: Start difference. First operand has 235 places, 196 transitions, 1974 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:46:49,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 214 transitions, 2442 flow [2024-06-21 15:46:49,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 214 transitions, 2278 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:49,465 INFO L231 Difference]: Finished difference. Result has 236 places, 196 transitions, 1917 flow [2024-06-21 15:46:49,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1917, PETRI_PLACES=236, PETRI_TRANSITIONS=196} [2024-06-21 15:46:49,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 15:46:49,466 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 196 transitions, 1917 flow [2024-06-21 15:46:49,466 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) [2024-06-21 15:46:49,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:49,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:49,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 15:46:49,466 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)] === [2024-06-21 15:46:49,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash 326898124, now seen corresponding path program 15 times [2024-06-21 15:46:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979833292] [2024-06-21 15:46:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:49,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979833292] [2024-06-21 15:46:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979833292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:51,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:51,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786870349] [2024-06-21 15:46:51,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:51,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:51,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:51,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:51,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 196 transitions, 1917 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) [2024-06-21 15:46:51,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:51,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:51,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:52,408 INFO L124 PetriNetUnfolderBase]: 615/1095 cut-off events. [2024-06-21 15:46:52,408 INFO L125 PetriNetUnfolderBase]: For 79688/79691 co-relation queries the response was YES. [2024-06-21 15:46:52,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6653 conditions, 1095 events. 615/1095 cut-off events. For 79688/79691 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5443 event pairs, 101 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 6536. Up to 942 conditions per place. [2024-06-21 15:46:52,417 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 34 changer transitions 0/213 dead transitions. [2024-06-21 15:46:52,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 213 transitions, 2379 flow [2024-06-21 15:46:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:46:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:46:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:46:52,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-21 15:46:52,418 INFO L175 Difference]: Start difference. First operand has 236 places, 196 transitions, 1917 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:46:52,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 213 transitions, 2379 flow [2024-06-21 15:46:52,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 213 transitions, 2233 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:52,595 INFO L231 Difference]: Finished difference. Result has 237 places, 196 transitions, 1844 flow [2024-06-21 15:46:52,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=237, PETRI_TRANSITIONS=196} [2024-06-21 15:46:52,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-21 15:46:52,596 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 196 transitions, 1844 flow [2024-06-21 15:46:52,596 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) [2024-06-21 15:46:52,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:52,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:52,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 15:46:52,597 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)] === [2024-06-21 15:46:52,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1249988404, now seen corresponding path program 6 times [2024-06-21 15:46:52,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:52,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528170519] [2024-06-21 15:46:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:52,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528170519] [2024-06-21 15:46:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528170519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:55,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665647730] [2024-06-21 15:46:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:55,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:55,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 196 transitions, 1844 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) [2024-06-21 15:46:55,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:55,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:55,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:55,857 INFO L124 PetriNetUnfolderBase]: 623/1112 cut-off events. [2024-06-21 15:46:55,857 INFO L125 PetriNetUnfolderBase]: For 88775/88778 co-relation queries the response was YES. [2024-06-21 15:46:55,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 1112 events. 623/1112 cut-off events. For 88775/88778 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5563 event pairs, 118 based on Foata normal form. 6/1113 useless extension candidates. Maximal degree in co-relation 6561. Up to 983 conditions per place. [2024-06-21 15:46:55,867 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-21 15:46:55,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 216 transitions, 2373 flow [2024-06-21 15:46:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 15:46:55,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 15:46:55,869 INFO L175 Difference]: Start difference. First operand has 237 places, 196 transitions, 1844 flow. Second operand 11 states and 115 transitions. [2024-06-21 15:46:55,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 216 transitions, 2373 flow [2024-06-21 15:46:56,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 216 transitions, 2286 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:56,082 INFO L231 Difference]: Finished difference. Result has 239 places, 197 transitions, 1869 flow [2024-06-21 15:46:56,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1869, PETRI_PLACES=239, PETRI_TRANSITIONS=197} [2024-06-21 15:46:56,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-21 15:46:56,082 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 197 transitions, 1869 flow [2024-06-21 15:46:56,083 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) [2024-06-21 15:46:56,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:56,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 15:46:56,083 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)] === [2024-06-21 15:46:56,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2139694840, now seen corresponding path program 7 times [2024-06-21 15:46:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:56,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406164033] [2024-06-21 15:46:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:46:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:46:59,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:46:59,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406164033] [2024-06-21 15:46:59,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406164033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:46:59,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:46:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:46:59,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169348931] [2024-06-21 15:46:59,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:46:59,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:46:59,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:46:59,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:46:59,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:46:59,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:46:59,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 197 transitions, 1869 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) [2024-06-21 15:46:59,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:46:59,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:46:59,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:46:59,690 INFO L124 PetriNetUnfolderBase]: 624/1115 cut-off events. [2024-06-21 15:46:59,690 INFO L125 PetriNetUnfolderBase]: For 84825/84828 co-relation queries the response was YES. [2024-06-21 15:46:59,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6595 conditions, 1115 events. 624/1115 cut-off events. For 84825/84828 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5579 event pairs, 127 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 6476. Up to 1006 conditions per place. [2024-06-21 15:46:59,699 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2024-06-21 15:46:59,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 217 transitions, 2402 flow [2024-06-21 15:46:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:46:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:46:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:46:59,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 15:46:59,700 INFO L175 Difference]: Start difference. First operand has 239 places, 197 transitions, 1869 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:46:59,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 217 transitions, 2402 flow [2024-06-21 15:46:59,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 217 transitions, 2300 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 15:46:59,875 INFO L231 Difference]: Finished difference. Result has 241 places, 198 transitions, 1867 flow [2024-06-21 15:46:59,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1867, PETRI_PLACES=241, PETRI_TRANSITIONS=198} [2024-06-21 15:46:59,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-21 15:46:59,875 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 198 transitions, 1867 flow [2024-06-21 15:46:59,876 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) [2024-06-21 15:46:59,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:46:59,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:46:59,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 15:46:59,876 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)] === [2024-06-21 15:46:59,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:46:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1057194658, now seen corresponding path program 1 times [2024-06-21 15:46:59,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:46:59,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913597512] [2024-06-21 15:46:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:46:59,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:46:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913597512] [2024-06-21 15:47:02,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913597512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:02,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842533210] [2024-06-21 15:47:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:02,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:02,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:02,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:02,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:02,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 198 transitions, 1867 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) [2024-06-21 15:47:02,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:02,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:02,872 INFO L124 PetriNetUnfolderBase]: 628/1121 cut-off events. [2024-06-21 15:47:02,872 INFO L125 PetriNetUnfolderBase]: For 78999/78999 co-relation queries the response was YES. [2024-06-21 15:47:02,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 1121 events. 628/1121 cut-off events. For 78999/78999 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5623 event pairs, 126 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6454. Up to 995 conditions per place. [2024-06-21 15:47:02,880 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 188 selfloop transitions, 28 changer transitions 0/218 dead transitions. [2024-06-21 15:47:02,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 218 transitions, 2364 flow [2024-06-21 15:47:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 15:47:02,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 15:47:02,881 INFO L175 Difference]: Start difference. First operand has 241 places, 198 transitions, 1867 flow. Second operand 10 states and 107 transitions. [2024-06-21 15:47:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 218 transitions, 2364 flow [2024-06-21 15:47:03,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 218 transitions, 2274 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 15:47:03,071 INFO L231 Difference]: Finished difference. Result has 242 places, 199 transitions, 1853 flow [2024-06-21 15:47:03,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1853, PETRI_PLACES=242, PETRI_TRANSITIONS=199} [2024-06-21 15:47:03,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-21 15:47:03,072 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 199 transitions, 1853 flow [2024-06-21 15:47:03,072 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) [2024-06-21 15:47:03,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:03,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 15:47:03,072 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)] === [2024-06-21 15:47:03,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash 43689450, now seen corresponding path program 2 times [2024-06-21 15:47:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503472013] [2024-06-21 15:47:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503472013] [2024-06-21 15:47:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503472013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:05,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:05,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162136528] [2024-06-21 15:47:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:05,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:05,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:05,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 199 transitions, 1853 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:05,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:05,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:05,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:06,266 INFO L124 PetriNetUnfolderBase]: 632/1129 cut-off events. [2024-06-21 15:47:06,266 INFO L125 PetriNetUnfolderBase]: For 80127/80127 co-relation queries the response was YES. [2024-06-21 15:47:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6587 conditions, 1129 events. 632/1129 cut-off events. For 80127/80127 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5697 event pairs, 126 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 6466. Up to 997 conditions per place. [2024-06-21 15:47:06,276 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 28 changer transitions 0/219 dead transitions. [2024-06-21 15:47:06,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 219 transitions, 2354 flow [2024-06-21 15:47:06,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:47:06,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 15:47:06,277 INFO L175 Difference]: Start difference. First operand has 242 places, 199 transitions, 1853 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:47:06,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 219 transitions, 2354 flow [2024-06-21 15:47:06,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 219 transitions, 2288 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:06,473 INFO L231 Difference]: Finished difference. Result has 244 places, 200 transitions, 1866 flow [2024-06-21 15:47:06,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1866, PETRI_PLACES=244, PETRI_TRANSITIONS=200} [2024-06-21 15:47:06,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-21 15:47:06,474 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 200 transitions, 1866 flow [2024-06-21 15:47:06,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:06,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:06,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:06,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 15:47:06,475 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)] === [2024-06-21 15:47:06,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:06,475 INFO L85 PathProgramCache]: Analyzing trace with hash -762425476, now seen corresponding path program 3 times [2024-06-21 15:47:06,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:06,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964379051] [2024-06-21 15:47:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:06,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:08,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:08,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964379051] [2024-06-21 15:47:08,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964379051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:08,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:08,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:47:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107351595] [2024-06-21 15:47:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:08,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:47:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:47:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:47:08,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:08,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 200 transitions, 1866 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) [2024-06-21 15:47:08,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:08,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:08,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:09,415 INFO L124 PetriNetUnfolderBase]: 636/1137 cut-off events. [2024-06-21 15:47:09,416 INFO L125 PetriNetUnfolderBase]: For 82061/82061 co-relation queries the response was YES. [2024-06-21 15:47:09,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 1137 events. 636/1137 cut-off events. For 82061/82061 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5750 event pairs, 126 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 6524. Up to 1021 conditions per place. [2024-06-21 15:47:09,424 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 194 selfloop transitions, 24 changer transitions 0/220 dead transitions. [2024-06-21 15:47:09,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 220 transitions, 2371 flow [2024-06-21 15:47:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 15:47:09,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 15:47:09,425 INFO L175 Difference]: Start difference. First operand has 244 places, 200 transitions, 1866 flow. Second operand 10 states and 105 transitions. [2024-06-21 15:47:09,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 220 transitions, 2371 flow [2024-06-21 15:47:09,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 220 transitions, 2304 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:09,628 INFO L231 Difference]: Finished difference. Result has 246 places, 201 transitions, 1871 flow [2024-06-21 15:47:09,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1871, PETRI_PLACES=246, PETRI_TRANSITIONS=201} [2024-06-21 15:47:09,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-21 15:47:09,629 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 201 transitions, 1871 flow [2024-06-21 15:47:09,629 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) [2024-06-21 15:47:09,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:09,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:09,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 15:47:09,629 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)] === [2024-06-21 15:47:09,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash 897825780, now seen corresponding path program 4 times [2024-06-21 15:47:09,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:09,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254754341] [2024-06-21 15:47:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:11,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254754341] [2024-06-21 15:47:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254754341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:11,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:11,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:11,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125406233] [2024-06-21 15:47:11,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:11,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:11,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:11,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 201 transitions, 1871 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:11,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:11,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:11,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:12,546 INFO L124 PetriNetUnfolderBase]: 640/1145 cut-off events. [2024-06-21 15:47:12,546 INFO L125 PetriNetUnfolderBase]: For 82320/82320 co-relation queries the response was YES. [2024-06-21 15:47:12,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 1145 events. 640/1145 cut-off events. For 82320/82320 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5790 event pairs, 120 based on Foata normal form. 2/1146 useless extension candidates. Maximal degree in co-relation 6574. Up to 1025 conditions per place. [2024-06-21 15:47:12,556 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 198 selfloop transitions, 21 changer transitions 0/221 dead transitions. [2024-06-21 15:47:12,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 221 transitions, 2380 flow [2024-06-21 15:47:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-21 15:47:12,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-21 15:47:12,557 INFO L175 Difference]: Start difference. First operand has 246 places, 201 transitions, 1871 flow. Second operand 10 states and 103 transitions. [2024-06-21 15:47:12,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 221 transitions, 2380 flow [2024-06-21 15:47:12,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 221 transitions, 2318 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:12,753 INFO L231 Difference]: Finished difference. Result has 248 places, 202 transitions, 1877 flow [2024-06-21 15:47:12,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1877, PETRI_PLACES=248, PETRI_TRANSITIONS=202} [2024-06-21 15:47:12,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-21 15:47:12,754 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 202 transitions, 1877 flow [2024-06-21 15:47:12,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:12,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:12,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:12,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 15:47:12,755 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)] === [2024-06-21 15:47:12,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 136339262, now seen corresponding path program 1 times [2024-06-21 15:47:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129567181] [2024-06-21 15:47:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:12,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:16,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:16,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129567181] [2024-06-21 15:47:16,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129567181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:16,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:16,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899558295] [2024-06-21 15:47:16,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:16,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:16,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:16,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:16,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 202 transitions, 1877 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:16,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:16,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:16,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:16,842 INFO L124 PetriNetUnfolderBase]: 646/1155 cut-off events. [2024-06-21 15:47:16,842 INFO L125 PetriNetUnfolderBase]: For 86214/86214 co-relation queries the response was YES. [2024-06-21 15:47:16,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 1155 events. 646/1155 cut-off events. For 86214/86214 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5882 event pairs, 130 based on Foata normal form. 2/1156 useless extension candidates. Maximal degree in co-relation 6656. Up to 1019 conditions per place. [2024-06-21 15:47:16,852 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 31 changer transitions 0/225 dead transitions. [2024-06-21 15:47:16,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 225 transitions, 2430 flow [2024-06-21 15:47:16,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:47:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:47:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 15:47:16,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 15:47:16,853 INFO L175 Difference]: Start difference. First operand has 248 places, 202 transitions, 1877 flow. Second operand 11 states and 117 transitions. [2024-06-21 15:47:16,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 225 transitions, 2430 flow [2024-06-21 15:47:17,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 225 transitions, 2372 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:17,075 INFO L231 Difference]: Finished difference. Result has 251 places, 204 transitions, 1942 flow [2024-06-21 15:47:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=251, PETRI_TRANSITIONS=204} [2024-06-21 15:47:17,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-21 15:47:17,076 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 204 transitions, 1942 flow [2024-06-21 15:47:17,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:17,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:17,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:17,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 15:47:17,077 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)] === [2024-06-21 15:47:17,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1937768618, now seen corresponding path program 5 times [2024-06-21 15:47:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510526098] [2024-06-21 15:47:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:17,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:19,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:19,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510526098] [2024-06-21 15:47:19,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510526098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:19,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:19,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:19,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745987484] [2024-06-21 15:47:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:19,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:19,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:19,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 204 transitions, 1942 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:19,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:19,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:19,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:20,080 INFO L124 PetriNetUnfolderBase]: 650/1162 cut-off events. [2024-06-21 15:47:20,081 INFO L125 PetriNetUnfolderBase]: For 87958/87958 co-relation queries the response was YES. [2024-06-21 15:47:20,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 1162 events. 650/1162 cut-off events. For 87958/87958 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5923 event pairs, 114 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 6740. Up to 993 conditions per place. [2024-06-21 15:47:20,091 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-21 15:47:20,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 224 transitions, 2454 flow [2024-06-21 15:47:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:47:20,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:47:20,092 INFO L175 Difference]: Start difference. First operand has 251 places, 204 transitions, 1942 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:47:20,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 224 transitions, 2454 flow [2024-06-21 15:47:20,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 224 transitions, 2353 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 15:47:20,314 INFO L231 Difference]: Finished difference. Result has 252 places, 205 transitions, 1945 flow [2024-06-21 15:47:20,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1945, PETRI_PLACES=252, PETRI_TRANSITIONS=205} [2024-06-21 15:47:20,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-21 15:47:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 205 transitions, 1945 flow [2024-06-21 15:47:20,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:20,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:20,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 15:47:20,316 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)] === [2024-06-21 15:47:20,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1937763968, now seen corresponding path program 6 times [2024-06-21 15:47:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000921488] [2024-06-21 15:47:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:22,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:22,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000921488] [2024-06-21 15:47:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000921488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:22,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:22,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:22,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143385064] [2024-06-21 15:47:22,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:22,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:22,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:22,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:22,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 205 transitions, 1945 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:22,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:22,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:22,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:23,637 INFO L124 PetriNetUnfolderBase]: 654/1170 cut-off events. [2024-06-21 15:47:23,637 INFO L125 PetriNetUnfolderBase]: For 91610/91610 co-relation queries the response was YES. [2024-06-21 15:47:23,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6922 conditions, 1170 events. 654/1170 cut-off events. For 91610/91610 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5989 event pairs, 114 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 6796. Up to 1001 conditions per place. [2024-06-21 15:47:23,648 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 186 selfloop transitions, 37 changer transitions 0/225 dead transitions. [2024-06-21 15:47:23,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 2461 flow [2024-06-21 15:47:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 15:47:23,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-21 15:47:23,649 INFO L175 Difference]: Start difference. First operand has 252 places, 205 transitions, 1945 flow. Second operand 10 states and 109 transitions. [2024-06-21 15:47:23,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 2461 flow [2024-06-21 15:47:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 225 transitions, 2367 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:23,896 INFO L231 Difference]: Finished difference. Result has 254 places, 206 transitions, 1955 flow [2024-06-21 15:47:23,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1955, PETRI_PLACES=254, PETRI_TRANSITIONS=206} [2024-06-21 15:47:23,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-21 15:47:23,897 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 206 transitions, 1955 flow [2024-06-21 15:47:23,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:23,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:23,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:23,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 15:47:23,897 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)] === [2024-06-21 15:47:23,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:23,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1937948542, now seen corresponding path program 2 times [2024-06-21 15:47:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409059143] [2024-06-21 15:47:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409059143] [2024-06-21 15:47:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409059143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:27,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:27,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035326079] [2024-06-21 15:47:27,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:27,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:27,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:27,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:27,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 206 transitions, 1955 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:27,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:27,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:27,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:28,001 INFO L124 PetriNetUnfolderBase]: 660/1180 cut-off events. [2024-06-21 15:47:28,001 INFO L125 PetriNetUnfolderBase]: For 93777/93777 co-relation queries the response was YES. [2024-06-21 15:47:28,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7007 conditions, 1180 events. 660/1180 cut-off events. For 93777/93777 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6048 event pairs, 114 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 6880. Up to 1001 conditions per place. [2024-06-21 15:47:28,009 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-21 15:47:28,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 229 transitions, 2515 flow [2024-06-21 15:47:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:47:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:47:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 15:47:28,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-21 15:47:28,011 INFO L175 Difference]: Start difference. First operand has 254 places, 206 transitions, 1955 flow. Second operand 11 states and 120 transitions. [2024-06-21 15:47:28,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 229 transitions, 2515 flow [2024-06-21 15:47:28,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 229 transitions, 2421 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:28,266 INFO L231 Difference]: Finished difference. Result has 257 places, 208 transitions, 2008 flow [2024-06-21 15:47:28,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2008, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2024-06-21 15:47:28,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 15:47:28,266 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 2008 flow [2024-06-21 15:47:28,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:28,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:28,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:28,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 15:47:28,267 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)] === [2024-06-21 15:47:28,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1944197708, now seen corresponding path program 7 times [2024-06-21 15:47:28,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257902210] [2024-06-21 15:47:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:30,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257902210] [2024-06-21 15:47:30,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257902210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:30,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:30,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161631403] [2024-06-21 15:47:30,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:30,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:30,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:30,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:30,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:30,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 2008 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:30,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:30,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:30,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:31,305 INFO L124 PetriNetUnfolderBase]: 664/1188 cut-off events. [2024-06-21 15:47:31,305 INFO L125 PetriNetUnfolderBase]: For 96014/96014 co-relation queries the response was YES. [2024-06-21 15:47:31,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7077 conditions, 1188 events. 664/1188 cut-off events. For 96014/96014 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6145 event pairs, 114 based on Foata normal form. 2/1189 useless extension candidates. Maximal degree in co-relation 6949. Up to 980 conditions per place. [2024-06-21 15:47:31,314 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 181 selfloop transitions, 46 changer transitions 0/229 dead transitions. [2024-06-21 15:47:31,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 229 transitions, 2538 flow [2024-06-21 15:47:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:47:31,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 15:47:31,315 INFO L175 Difference]: Start difference. First operand has 257 places, 208 transitions, 2008 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:47:31,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 229 transitions, 2538 flow [2024-06-21 15:47:31,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 229 transitions, 2413 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 15:47:31,596 INFO L231 Difference]: Finished difference. Result has 258 places, 209 transitions, 2007 flow [2024-06-21 15:47:31,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2007, PETRI_PLACES=258, PETRI_TRANSITIONS=209} [2024-06-21 15:47:31,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-21 15:47:31,597 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 209 transitions, 2007 flow [2024-06-21 15:47:31,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:31,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:31,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:31,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 15:47:31,597 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)] === [2024-06-21 15:47:31,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash -542449602, now seen corresponding path program 3 times [2024-06-21 15:47:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397020353] [2024-06-21 15:47:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:31,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:35,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397020353] [2024-06-21 15:47:35,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397020353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:35,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:35,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:35,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733960340] [2024-06-21 15:47:35,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:35,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:35,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:35,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:36,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:36,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 209 transitions, 2007 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:36,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:36,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:37,156 INFO L124 PetriNetUnfolderBase]: 670/1198 cut-off events. [2024-06-21 15:47:37,157 INFO L125 PetriNetUnfolderBase]: For 98206/98206 co-relation queries the response was YES. [2024-06-21 15:47:37,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7166 conditions, 1198 events. 670/1198 cut-off events. For 98206/98206 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6165 event pairs, 110 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 7037. Up to 937 conditions per place. [2024-06-21 15:47:37,168 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 173 selfloop transitions, 59 changer transitions 0/234 dead transitions. [2024-06-21 15:47:37,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 234 transitions, 2589 flow [2024-06-21 15:47:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:47:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:47:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 15:47:37,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-21 15:47:37,170 INFO L175 Difference]: Start difference. First operand has 258 places, 209 transitions, 2007 flow. Second operand 11 states and 124 transitions. [2024-06-21 15:47:37,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 234 transitions, 2589 flow [2024-06-21 15:47:37,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 234 transitions, 2475 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 15:47:37,441 INFO L231 Difference]: Finished difference. Result has 261 places, 211 transitions, 2080 flow [2024-06-21 15:47:37,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2080, PETRI_PLACES=261, PETRI_TRANSITIONS=211} [2024-06-21 15:47:37,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-21 15:47:37,441 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 211 transitions, 2080 flow [2024-06-21 15:47:37,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:37,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:37,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 15:47:37,442 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)] === [2024-06-21 15:47:37,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash -542680242, now seen corresponding path program 4 times [2024-06-21 15:47:37,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:37,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246849717] [2024-06-21 15:47:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:37,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:40,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:40,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246849717] [2024-06-21 15:47:40,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246849717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:40,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:40,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:40,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308918038] [2024-06-21 15:47:40,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:40,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:40,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:40,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:41,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:41,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 211 transitions, 2080 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:41,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:41,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:41,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:41,884 INFO L124 PetriNetUnfolderBase]: 676/1208 cut-off events. [2024-06-21 15:47:41,884 INFO L125 PetriNetUnfolderBase]: For 100532/100532 co-relation queries the response was YES. [2024-06-21 15:47:41,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 1208 events. 676/1208 cut-off events. For 100532/100532 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6253 event pairs, 114 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 7170. Up to 990 conditions per place. [2024-06-21 15:47:41,896 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 49 changer transitions 0/235 dead transitions. [2024-06-21 15:47:41,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 235 transitions, 2664 flow [2024-06-21 15:47:41,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:47:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:47:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 15:47:41,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 15:47:41,899 INFO L175 Difference]: Start difference. First operand has 261 places, 211 transitions, 2080 flow. Second operand 11 states and 122 transitions. [2024-06-21 15:47:41,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 235 transitions, 2664 flow [2024-06-21 15:47:42,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 235 transitions, 2499 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 15:47:42,235 INFO L231 Difference]: Finished difference. Result has 263 places, 213 transitions, 2086 flow [2024-06-21 15:47:42,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=263, PETRI_TRANSITIONS=213} [2024-06-21 15:47:42,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-21 15:47:42,237 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 213 transitions, 2086 flow [2024-06-21 15:47:42,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:42,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:42,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:42,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 15:47:42,238 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)] === [2024-06-21 15:47:42,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash 308473826, now seen corresponding path program 1 times [2024-06-21 15:47:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:42,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214747622] [2024-06-21 15:47:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214747622] [2024-06-21 15:47:44,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214747622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:44,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:44,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909435725] [2024-06-21 15:47:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:44,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:44,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:44,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:44,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 213 transitions, 2086 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:44,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:44,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:44,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:45,620 INFO L124 PetriNetUnfolderBase]: 673/1204 cut-off events. [2024-06-21 15:47:45,620 INFO L125 PetriNetUnfolderBase]: For 93251/93251 co-relation queries the response was YES. [2024-06-21 15:47:45,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 1204 events. 673/1204 cut-off events. For 93251/93251 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6233 event pairs, 143 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 6870. Up to 1088 conditions per place. [2024-06-21 15:47:45,629 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 32 changer transitions 0/233 dead transitions. [2024-06-21 15:47:45,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 233 transitions, 2611 flow [2024-06-21 15:47:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:47:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:47:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:47:45,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 15:47:45,630 INFO L175 Difference]: Start difference. First operand has 263 places, 213 transitions, 2086 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:47:45,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 233 transitions, 2611 flow [2024-06-21 15:47:45,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 233 transitions, 2462 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-21 15:47:45,893 INFO L231 Difference]: Finished difference. Result has 265 places, 213 transitions, 2007 flow [2024-06-21 15:47:45,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2007, PETRI_PLACES=265, PETRI_TRANSITIONS=213} [2024-06-21 15:47:45,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-21 15:47:45,894 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 213 transitions, 2007 flow [2024-06-21 15:47:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:45,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:45,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:45,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 15:47:45,895 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)] === [2024-06-21 15:47:45,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash 131096042, now seen corresponding path program 8 times [2024-06-21 15:47:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:45,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139594637] [2024-06-21 15:47:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:45,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:48,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:48,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139594637] [2024-06-21 15:47:48,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139594637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:48,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:48,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:48,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945369801] [2024-06-21 15:47:48,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:48,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:48,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:48,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 213 transitions, 2007 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:48,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:48,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:48,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:48,981 INFO L124 PetriNetUnfolderBase]: 677/1211 cut-off events. [2024-06-21 15:47:48,982 INFO L125 PetriNetUnfolderBase]: For 94830/94830 co-relation queries the response was YES. [2024-06-21 15:47:48,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6968 conditions, 1211 events. 677/1211 cut-off events. For 94830/94830 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6285 event pairs, 123 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 6836. Up to 1077 conditions per place. [2024-06-21 15:47:48,993 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 30 changer transitions 0/232 dead transitions. [2024-06-21 15:47:48,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 232 transitions, 2537 flow [2024-06-21 15:47:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:47:48,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 15:47:48,995 INFO L175 Difference]: Start difference. First operand has 265 places, 213 transitions, 2007 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:47:48,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 232 transitions, 2537 flow [2024-06-21 15:47:49,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 232 transitions, 2424 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-21 15:47:49,281 INFO L231 Difference]: Finished difference. Result has 265 places, 214 transitions, 1988 flow [2024-06-21 15:47:49,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1988, PETRI_PLACES=265, PETRI_TRANSITIONS=214} [2024-06-21 15:47:49,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-21 15:47:49,282 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 214 transitions, 1988 flow [2024-06-21 15:47:49,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:49,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:49,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:49,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 15:47:49,283 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)] === [2024-06-21 15:47:49,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash -542441232, now seen corresponding path program 5 times [2024-06-21 15:47:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143167209] [2024-06-21 15:47:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:52,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143167209] [2024-06-21 15:47:52,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143167209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:52,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:52,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:52,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173352819] [2024-06-21 15:47:52,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:52,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:52,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:52,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:52,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:52,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 214 transitions, 1988 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:52,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:52,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:52,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:53,718 INFO L124 PetriNetUnfolderBase]: 693/1237 cut-off events. [2024-06-21 15:47:53,718 INFO L125 PetriNetUnfolderBase]: For 104465/104465 co-relation queries the response was YES. [2024-06-21 15:47:53,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7350 conditions, 1237 events. 693/1237 cut-off events. For 104465/104465 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6437 event pairs, 111 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 7218. Up to 922 conditions per place. [2024-06-21 15:47:53,729 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 73 changer transitions 0/245 dead transitions. [2024-06-21 15:47:53,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 245 transitions, 2870 flow [2024-06-21 15:47:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:47:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:47:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 15:47:53,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 15:47:53,731 INFO L175 Difference]: Start difference. First operand has 265 places, 214 transitions, 1988 flow. Second operand 12 states and 136 transitions. [2024-06-21 15:47:53,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 245 transitions, 2870 flow [2024-06-21 15:47:54,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 245 transitions, 2747 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 15:47:54,062 INFO L231 Difference]: Finished difference. Result has 268 places, 218 transitions, 2161 flow [2024-06-21 15:47:54,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2161, PETRI_PLACES=268, PETRI_TRANSITIONS=218} [2024-06-21 15:47:54,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-21 15:47:54,063 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 218 transitions, 2161 flow [2024-06-21 15:47:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:54,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:54,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:54,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 15:47:54,063 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)] === [2024-06-21 15:47:54,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1767061538, now seen corresponding path program 9 times [2024-06-21 15:47:54,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:54,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085042310] [2024-06-21 15:47:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:54,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085042310] [2024-06-21 15:47:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085042310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:56,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:56,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:56,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826608630] [2024-06-21 15:47:56,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:56,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:56,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:56,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 218 transitions, 2161 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:56,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:56,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:56,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:47:57,059 INFO L124 PetriNetUnfolderBase]: 697/1245 cut-off events. [2024-06-21 15:47:57,060 INFO L125 PetriNetUnfolderBase]: For 102209/102209 co-relation queries the response was YES. [2024-06-21 15:47:57,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7412 conditions, 1245 events. 697/1245 cut-off events. For 102209/102209 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6508 event pairs, 123 based on Foata normal form. 2/1246 useless extension candidates. Maximal degree in co-relation 7280. Up to 1111 conditions per place. [2024-06-21 15:47:57,071 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 29 changer transitions 0/237 dead transitions. [2024-06-21 15:47:57,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 237 transitions, 2701 flow [2024-06-21 15:47:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:47:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:47:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 15:47:57,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 15:47:57,073 INFO L175 Difference]: Start difference. First operand has 268 places, 218 transitions, 2161 flow. Second operand 10 states and 107 transitions. [2024-06-21 15:47:57,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 237 transitions, 2701 flow [2024-06-21 15:47:57,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 237 transitions, 2517 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-21 15:47:57,396 INFO L231 Difference]: Finished difference. Result has 269 places, 219 transitions, 2069 flow [2024-06-21 15:47:57,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2069, PETRI_PLACES=269, PETRI_TRANSITIONS=219} [2024-06-21 15:47:57,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-21 15:47:57,397 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 219 transitions, 2069 flow [2024-06-21 15:47:57,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:57,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:47:57,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:47:57,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 15:47:57,397 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)] === [2024-06-21 15:47:57,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:47:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1195491412, now seen corresponding path program 10 times [2024-06-21 15:47:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:47:57,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084557949] [2024-06-21 15:47:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:47:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:47:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:47:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:47:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:47:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084557949] [2024-06-21 15:47:59,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084557949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:47:59,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:47:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:47:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507827841] [2024-06-21 15:47:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:47:59,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:47:59,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:47:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:47:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:47:59,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:47:59,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 219 transitions, 2069 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:47:59,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:47:59,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:47:59,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:00,168 INFO L124 PetriNetUnfolderBase]: 701/1253 cut-off events. [2024-06-21 15:48:00,168 INFO L125 PetriNetUnfolderBase]: For 103917/103917 co-relation queries the response was YES. [2024-06-21 15:48:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 1253 events. 701/1253 cut-off events. For 103917/103917 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6575 event pairs, 121 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 7200. Up to 1119 conditions per place. [2024-06-21 15:48:00,179 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 208 selfloop transitions, 28 changer transitions 0/238 dead transitions. [2024-06-21 15:48:00,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 238 transitions, 2613 flow [2024-06-21 15:48:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:48:00,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 15:48:00,180 INFO L175 Difference]: Start difference. First operand has 269 places, 219 transitions, 2069 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:48:00,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 238 transitions, 2613 flow [2024-06-21 15:48:00,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 238 transitions, 2531 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:00,484 INFO L231 Difference]: Finished difference. Result has 271 places, 220 transitions, 2079 flow [2024-06-21 15:48:00,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2079, PETRI_PLACES=271, PETRI_TRANSITIONS=220} [2024-06-21 15:48:00,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-21 15:48:00,485 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 220 transitions, 2079 flow [2024-06-21 15:48:00,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:00,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:00,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 15:48:00,486 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)] === [2024-06-21 15:48:00,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash -715170132, now seen corresponding path program 6 times [2024-06-21 15:48:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325261933] [2024-06-21 15:48:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:03,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:03,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325261933] [2024-06-21 15:48:03,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325261933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:03,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:03,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:48:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235809796] [2024-06-21 15:48:03,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:03,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:48:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:48:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:48:03,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:03,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 220 transitions, 2079 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:03,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:03,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:03,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:04,494 INFO L124 PetriNetUnfolderBase]: 697/1247 cut-off events. [2024-06-21 15:48:04,495 INFO L125 PetriNetUnfolderBase]: For 96447/96447 co-relation queries the response was YES. [2024-06-21 15:48:04,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1247 events. 697/1247 cut-off events. For 96447/96447 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6514 event pairs, 125 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 6934. Up to 1103 conditions per place. [2024-06-21 15:48:04,504 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 33 changer transitions 0/240 dead transitions. [2024-06-21 15:48:04,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 240 transitions, 2601 flow [2024-06-21 15:48:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 15:48:04,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-21 15:48:04,506 INFO L175 Difference]: Start difference. First operand has 271 places, 220 transitions, 2079 flow. Second operand 11 states and 118 transitions. [2024-06-21 15:48:04,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 240 transitions, 2601 flow [2024-06-21 15:48:04,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 240 transitions, 2493 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:04,784 INFO L231 Difference]: Finished difference. Result has 274 places, 220 transitions, 2042 flow [2024-06-21 15:48:04,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2042, PETRI_PLACES=274, PETRI_TRANSITIONS=220} [2024-06-21 15:48:04,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-21 15:48:04,785 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 220 transitions, 2042 flow [2024-06-21 15:48:04,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:04,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:04,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:04,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 15:48:04,785 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)] === [2024-06-21 15:48:04,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash 142577438, now seen corresponding path program 7 times [2024-06-21 15:48:04,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:04,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521559821] [2024-06-21 15:48:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:04,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:08,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521559821] [2024-06-21 15:48:08,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521559821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:08,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:08,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:48:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390440265] [2024-06-21 15:48:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:08,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:48:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:48:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:48:08,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:08,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 220 transitions, 2042 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:08,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:08,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:08,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:09,432 INFO L124 PetriNetUnfolderBase]: 703/1259 cut-off events. [2024-06-21 15:48:09,432 INFO L125 PetriNetUnfolderBase]: For 97936/97939 co-relation queries the response was YES. [2024-06-21 15:48:09,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7101 conditions, 1259 events. 703/1259 cut-off events. For 97936/97939 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6590 event pairs, 66 based on Foata normal form. 2/1255 useless extension candidates. Maximal degree in co-relation 6966. Up to 608 conditions per place. [2024-06-21 15:48:09,442 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 118 changer transitions 0/248 dead transitions. [2024-06-21 15:48:09,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 248 transitions, 3036 flow [2024-06-21 15:48:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 15:48:09,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 15:48:09,444 INFO L175 Difference]: Start difference. First operand has 274 places, 220 transitions, 2042 flow. Second operand 11 states and 135 transitions. [2024-06-21 15:48:09,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 248 transitions, 3036 flow [2024-06-21 15:48:09,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 248 transitions, 2934 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 15:48:09,754 INFO L231 Difference]: Finished difference. Result has 275 places, 222 transitions, 2225 flow [2024-06-21 15:48:09,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2225, PETRI_PLACES=275, PETRI_TRANSITIONS=222} [2024-06-21 15:48:09,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-21 15:48:09,754 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 222 transitions, 2225 flow [2024-06-21 15:48:09,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:09,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:09,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:09,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 15:48:09,755 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)] === [2024-06-21 15:48:09,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:09,755 INFO L85 PathProgramCache]: Analyzing trace with hash -722815798, now seen corresponding path program 8 times [2024-06-21 15:48:09,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602399404] [2024-06-21 15:48:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:13,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:13,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602399404] [2024-06-21 15:48:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602399404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:13,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:13,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:48:13,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606453439] [2024-06-21 15:48:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:13,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:48:13,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:13,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:48:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:48:13,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:13,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 222 transitions, 2225 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:13,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:13,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:13,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:14,416 INFO L124 PetriNetUnfolderBase]: 699/1251 cut-off events. [2024-06-21 15:48:14,416 INFO L125 PetriNetUnfolderBase]: For 90387/90387 co-relation queries the response was YES. [2024-06-21 15:48:14,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7086 conditions, 1251 events. 699/1251 cut-off events. For 90387/90387 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6565 event pairs, 168 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 6950. Up to 1208 conditions per place. [2024-06-21 15:48:14,428 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 18 changer transitions 0/236 dead transitions. [2024-06-21 15:48:14,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 236 transitions, 2731 flow [2024-06-21 15:48:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-21 15:48:14,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-21 15:48:14,429 INFO L175 Difference]: Start difference. First operand has 275 places, 222 transitions, 2225 flow. Second operand 11 states and 107 transitions. [2024-06-21 15:48:14,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 236 transitions, 2731 flow [2024-06-21 15:48:14,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 236 transitions, 2481 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:14,755 INFO L231 Difference]: Finished difference. Result has 279 places, 223 transitions, 2029 flow [2024-06-21 15:48:14,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2029, PETRI_PLACES=279, PETRI_TRANSITIONS=223} [2024-06-21 15:48:14,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-21 15:48:14,768 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 223 transitions, 2029 flow [2024-06-21 15:48:14,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:14,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:14,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:14,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 15:48:14,769 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)] === [2024-06-21 15:48:14,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1592772266, now seen corresponding path program 11 times [2024-06-21 15:48:14,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:14,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13944676] [2024-06-21 15:48:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:14,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:17,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13944676] [2024-06-21 15:48:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13944676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:17,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:17,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259163404] [2024-06-21 15:48:17,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:17,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:17,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 223 transitions, 2029 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) [2024-06-21 15:48:17,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:17,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:17,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:18,297 INFO L124 PetriNetUnfolderBase]: 703/1261 cut-off events. [2024-06-21 15:48:18,297 INFO L125 PetriNetUnfolderBase]: For 91967/91970 co-relation queries the response was YES. [2024-06-21 15:48:18,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6868 conditions, 1261 events. 703/1261 cut-off events. For 91967/91970 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6649 event pairs, 114 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 6730. Up to 1074 conditions per place. [2024-06-21 15:48:18,308 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 201 selfloop transitions, 41 changer transitions 0/244 dead transitions. [2024-06-21 15:48:18,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 244 transitions, 2595 flow [2024-06-21 15:48:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 15:48:18,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 15:48:18,310 INFO L175 Difference]: Start difference. First operand has 279 places, 223 transitions, 2029 flow. Second operand 10 states and 114 transitions. [2024-06-21 15:48:18,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 244 transitions, 2595 flow [2024-06-21 15:48:18,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 244 transitions, 2552 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 15:48:18,586 INFO L231 Difference]: Finished difference. Result has 280 places, 224 transitions, 2106 flow [2024-06-21 15:48:18,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2106, PETRI_PLACES=280, PETRI_TRANSITIONS=224} [2024-06-21 15:48:18,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-21 15:48:18,595 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 224 transitions, 2106 flow [2024-06-21 15:48:18,595 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) [2024-06-21 15:48:18,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:18,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:18,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 15:48:18,596 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)] === [2024-06-21 15:48:18,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:18,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1000207670, now seen corresponding path program 9 times [2024-06-21 15:48:18,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:18,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905469330] [2024-06-21 15:48:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:18,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:21,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905469330] [2024-06-21 15:48:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905469330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:21,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:21,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 15:48:21,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672117101] [2024-06-21 15:48:21,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:21,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 15:48:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 15:48:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-21 15:48:21,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:21,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 224 transitions, 2106 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) [2024-06-21 15:48:21,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:21,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:21,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:22,404 INFO L124 PetriNetUnfolderBase]: 709/1271 cut-off events. [2024-06-21 15:48:22,404 INFO L125 PetriNetUnfolderBase]: For 94540/94543 co-relation queries the response was YES. [2024-06-21 15:48:22,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7053 conditions, 1271 events. 709/1271 cut-off events. For 94540/94543 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6685 event pairs, 75 based on Foata normal form. 2/1267 useless extension candidates. Maximal degree in co-relation 6915. Up to 665 conditions per place. [2024-06-21 15:48:22,415 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 112 selfloop transitions, 134 changer transitions 0/248 dead transitions. [2024-06-21 15:48:22,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 248 transitions, 2924 flow [2024-06-21 15:48:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 15:48:22,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-21 15:48:22,422 INFO L175 Difference]: Start difference. First operand has 280 places, 224 transitions, 2106 flow. Second operand 10 states and 122 transitions. [2024-06-21 15:48:22,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 248 transitions, 2924 flow [2024-06-21 15:48:22,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 248 transitions, 2814 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:22,774 INFO L231 Difference]: Finished difference. Result has 282 places, 226 transitions, 2343 flow [2024-06-21 15:48:22,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2343, PETRI_PLACES=282, PETRI_TRANSITIONS=226} [2024-06-21 15:48:22,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-21 15:48:22,774 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 226 transitions, 2343 flow [2024-06-21 15:48:22,774 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) [2024-06-21 15:48:22,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:22,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 15:48:22,775 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)] === [2024-06-21 15:48:22,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1000216040, now seen corresponding path program 10 times [2024-06-21 15:48:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964479700] [2024-06-21 15:48:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:26,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:26,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964479700] [2024-06-21 15:48:26,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964479700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:26,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:26,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:48:26,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742675175] [2024-06-21 15:48:26,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:26,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:48:26,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:26,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:48:26,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:48:26,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:26,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 226 transitions, 2343 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:26,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:26,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:26,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:27,688 INFO L124 PetriNetUnfolderBase]: 715/1281 cut-off events. [2024-06-21 15:48:27,689 INFO L125 PetriNetUnfolderBase]: For 96619/96622 co-relation queries the response was YES. [2024-06-21 15:48:27,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7421 conditions, 1281 events. 715/1281 cut-off events. For 96619/96622 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6769 event pairs, 77 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 7282. Up to 928 conditions per place. [2024-06-21 15:48:27,700 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 80 changer transitions 0/251 dead transitions. [2024-06-21 15:48:27,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 251 transitions, 2971 flow [2024-06-21 15:48:27,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 15:48:27,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 15:48:27,702 INFO L175 Difference]: Start difference. First operand has 282 places, 226 transitions, 2343 flow. Second operand 11 states and 128 transitions. [2024-06-21 15:48:27,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 251 transitions, 2971 flow [2024-06-21 15:48:27,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 251 transitions, 2498 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-21 15:48:27,999 INFO L231 Difference]: Finished difference. Result has 281 places, 228 transitions, 2111 flow [2024-06-21 15:48:27,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2111, PETRI_PLACES=281, PETRI_TRANSITIONS=228} [2024-06-21 15:48:27,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-21 15:48:27,999 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 228 transitions, 2111 flow [2024-06-21 15:48:28,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:28,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:28,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 15:48:28,000 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)] === [2024-06-21 15:48:28,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1000453624, now seen corresponding path program 12 times [2024-06-21 15:48:28,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:28,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145388741] [2024-06-21 15:48:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:30,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:30,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145388741] [2024-06-21 15:48:30,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145388741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:30,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:30,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:30,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782641600] [2024-06-21 15:48:30,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:30,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:30,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:30,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:30,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 228 transitions, 2111 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) [2024-06-21 15:48:30,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:30,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:30,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:31,447 INFO L124 PetriNetUnfolderBase]: 719/1289 cut-off events. [2024-06-21 15:48:31,448 INFO L125 PetriNetUnfolderBase]: For 95977/95980 co-relation queries the response was YES. [2024-06-21 15:48:31,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7047 conditions, 1289 events. 719/1289 cut-off events. For 95977/95980 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6800 event pairs, 79 based on Foata normal form. 2/1285 useless extension candidates. Maximal degree in co-relation 6910. Up to 960 conditions per place. [2024-06-21 15:48:31,460 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 172 selfloop transitions, 74 changer transitions 0/248 dead transitions. [2024-06-21 15:48:31,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 248 transitions, 2685 flow [2024-06-21 15:48:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 15:48:31,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-21 15:48:31,461 INFO L175 Difference]: Start difference. First operand has 281 places, 228 transitions, 2111 flow. Second operand 10 states and 114 transitions. [2024-06-21 15:48:31,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 248 transitions, 2685 flow [2024-06-21 15:48:31,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 248 transitions, 2476 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 15:48:31,772 INFO L231 Difference]: Finished difference. Result has 282 places, 229 transitions, 2090 flow [2024-06-21 15:48:31,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2090, PETRI_PLACES=282, PETRI_TRANSITIONS=229} [2024-06-21 15:48:31,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-21 15:48:31,772 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 229 transitions, 2090 flow [2024-06-21 15:48:31,772 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) [2024-06-21 15:48:31,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:31,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:31,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 15:48:31,773 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)] === [2024-06-21 15:48:31,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:31,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1000446680, now seen corresponding path program 11 times [2024-06-21 15:48:31,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430492833] [2024-06-21 15:48:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:31,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:35,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430492833] [2024-06-21 15:48:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430492833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:35,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:35,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442941330] [2024-06-21 15:48:35,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:35,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:35,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:35,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:35,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 229 transitions, 2090 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) [2024-06-21 15:48:35,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:35,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:35,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:36,320 INFO L124 PetriNetUnfolderBase]: 725/1299 cut-off events. [2024-06-21 15:48:36,321 INFO L125 PetriNetUnfolderBase]: For 97882/97885 co-relation queries the response was YES. [2024-06-21 15:48:36,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1299 events. 725/1299 cut-off events. For 97882/97885 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6882 event pairs, 73 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 6960. Up to 812 conditions per place. [2024-06-21 15:48:36,333 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 100 changer transitions 0/252 dead transitions. [2024-06-21 15:48:36,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 252 transitions, 2708 flow [2024-06-21 15:48:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 15:48:36,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-21 15:48:36,334 INFO L175 Difference]: Start difference. First operand has 282 places, 229 transitions, 2090 flow. Second operand 11 states and 127 transitions. [2024-06-21 15:48:36,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 252 transitions, 2708 flow [2024-06-21 15:48:36,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 252 transitions, 2530 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:36,707 INFO L231 Difference]: Finished difference. Result has 285 places, 231 transitions, 2187 flow [2024-06-21 15:48:36,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2187, PETRI_PLACES=285, PETRI_TRANSITIONS=231} [2024-06-21 15:48:36,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-21 15:48:36,707 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 231 transitions, 2187 flow [2024-06-21 15:48:36,707 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) [2024-06-21 15:48:36,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:36,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:36,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 15:48:36,708 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)] === [2024-06-21 15:48:36,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash -324929206, now seen corresponding path program 12 times [2024-06-21 15:48:36,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:36,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342362926] [2024-06-21 15:48:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:36,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:40,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342362926] [2024-06-21 15:48:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342362926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:40,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:40,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10790602] [2024-06-21 15:48:40,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:40,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:40,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:40,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:40,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 231 transitions, 2187 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) [2024-06-21 15:48:40,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:40,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:40,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:41,521 INFO L124 PetriNetUnfolderBase]: 731/1309 cut-off events. [2024-06-21 15:48:41,521 INFO L125 PetriNetUnfolderBase]: For 99981/99984 co-relation queries the response was YES. [2024-06-21 15:48:41,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 1309 events. 731/1309 cut-off events. For 99981/99984 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6910 event pairs, 100 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 7115. Up to 1040 conditions per place. [2024-06-21 15:48:41,533 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 61 changer transitions 0/256 dead transitions. [2024-06-21 15:48:41,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 256 transitions, 2823 flow [2024-06-21 15:48:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 15:48:41,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-21 15:48:41,534 INFO L175 Difference]: Start difference. First operand has 285 places, 231 transitions, 2187 flow. Second operand 11 states and 127 transitions. [2024-06-21 15:48:41,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 256 transitions, 2823 flow [2024-06-21 15:48:41,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 256 transitions, 2570 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 15:48:41,866 INFO L231 Difference]: Finished difference. Result has 287 places, 233 transitions, 2135 flow [2024-06-21 15:48:41,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2135, PETRI_PLACES=287, PETRI_TRANSITIONS=233} [2024-06-21 15:48:41,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-21 15:48:41,867 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 233 transitions, 2135 flow [2024-06-21 15:48:41,867 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) [2024-06-21 15:48:41,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:41,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:41,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 15:48:41,868 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)] === [2024-06-21 15:48:41,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1593009850, now seen corresponding path program 13 times [2024-06-21 15:48:41,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:41,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967970276] [2024-06-21 15:48:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:41,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:45,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967970276] [2024-06-21 15:48:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967970276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:45,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:45,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:48:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586361312] [2024-06-21 15:48:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:45,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:48:45,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:45,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:48:45,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:48:45,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:45,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 233 transitions, 2135 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:45,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:45,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:45,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:46,322 INFO L124 PetriNetUnfolderBase]: 737/1319 cut-off events. [2024-06-21 15:48:46,323 INFO L125 PetriNetUnfolderBase]: For 102123/102126 co-relation queries the response was YES. [2024-06-21 15:48:46,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7226 conditions, 1319 events. 737/1319 cut-off events. For 102123/102126 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6997 event pairs, 120 based on Foata normal form. 2/1315 useless extension candidates. Maximal degree in co-relation 7086. Up to 1092 conditions per place. [2024-06-21 15:48:46,335 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 51 changer transitions 0/258 dead transitions. [2024-06-21 15:48:46,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 258 transitions, 2779 flow [2024-06-21 15:48:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 15:48:46,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-21 15:48:46,336 INFO L175 Difference]: Start difference. First operand has 287 places, 233 transitions, 2135 flow. Second operand 11 states and 126 transitions. [2024-06-21 15:48:46,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 258 transitions, 2779 flow [2024-06-21 15:48:46,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 258 transitions, 2600 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 15:48:46,652 INFO L231 Difference]: Finished difference. Result has 289 places, 235 transitions, 2141 flow [2024-06-21 15:48:46,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2141, PETRI_PLACES=289, PETRI_TRANSITIONS=235} [2024-06-21 15:48:46,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-21 15:48:46,653 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 235 transitions, 2141 flow [2024-06-21 15:48:46,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:48:46,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:46,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:46,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 15:48:46,654 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)] === [2024-06-21 15:48:46,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1592779210, now seen corresponding path program 14 times [2024-06-21 15:48:46,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:46,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682532114] [2024-06-21 15:48:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:50,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:50,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682532114] [2024-06-21 15:48:50,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682532114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:50,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:50,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:50,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870945862] [2024-06-21 15:48:50,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:50,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:50,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:50,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:50,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:50,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:50,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 235 transitions, 2141 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) [2024-06-21 15:48:50,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:50,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:50,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:50,827 INFO L124 PetriNetUnfolderBase]: 743/1329 cut-off events. [2024-06-21 15:48:50,827 INFO L125 PetriNetUnfolderBase]: For 104097/104100 co-relation queries the response was YES. [2024-06-21 15:48:50,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 1329 events. 743/1329 cut-off events. For 104097/104100 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7055 event pairs, 124 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 7135. Up to 1132 conditions per place. [2024-06-21 15:48:50,840 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 44 changer transitions 0/259 dead transitions. [2024-06-21 15:48:50,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 259 transitions, 2787 flow [2024-06-21 15:48:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:48:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:48:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 15:48:50,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-21 15:48:50,842 INFO L175 Difference]: Start difference. First operand has 289 places, 235 transitions, 2141 flow. Second operand 11 states and 124 transitions. [2024-06-21 15:48:50,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 259 transitions, 2787 flow [2024-06-21 15:48:51,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 259 transitions, 2624 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 15:48:51,170 INFO L231 Difference]: Finished difference. Result has 291 places, 237 transitions, 2153 flow [2024-06-21 15:48:51,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2153, PETRI_PLACES=291, PETRI_TRANSITIONS=237} [2024-06-21 15:48:51,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-21 15:48:51,171 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 237 transitions, 2153 flow [2024-06-21 15:48:51,171 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) [2024-06-21 15:48:51,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:51,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:51,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 15:48:51,172 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)] === [2024-06-21 15:48:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash -325166790, now seen corresponding path program 13 times [2024-06-21 15:48:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419134885] [2024-06-21 15:48:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:53,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:53,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419134885] [2024-06-21 15:48:53,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419134885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:53,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:53,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:53,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129365848] [2024-06-21 15:48:53,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:53,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:53,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:54,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:54,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 237 transitions, 2153 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) [2024-06-21 15:48:54,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:54,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:54,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:54,643 INFO L124 PetriNetUnfolderBase]: 747/1337 cut-off events. [2024-06-21 15:48:54,643 INFO L125 PetriNetUnfolderBase]: For 106057/106060 co-relation queries the response was YES. [2024-06-21 15:48:54,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 1337 events. 747/1337 cut-off events. For 106057/106060 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7116 event pairs, 103 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 7140. Up to 1100 conditions per place. [2024-06-21 15:48:54,656 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 203 selfloop transitions, 53 changer transitions 0/258 dead transitions. [2024-06-21 15:48:54,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 258 transitions, 2751 flow [2024-06-21 15:48:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 15:48:54,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 15:48:54,657 INFO L175 Difference]: Start difference. First operand has 291 places, 237 transitions, 2153 flow. Second operand 10 states and 115 transitions. [2024-06-21 15:48:54,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 258 transitions, 2751 flow [2024-06-21 15:48:55,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 258 transitions, 2598 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-21 15:48:55,004 INFO L231 Difference]: Finished difference. Result has 292 places, 238 transitions, 2148 flow [2024-06-21 15:48:55,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=292, PETRI_TRANSITIONS=238} [2024-06-21 15:48:55,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-21 15:48:55,005 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 238 transitions, 2148 flow [2024-06-21 15:48:55,005 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) [2024-06-21 15:48:55,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:55,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:55,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 15:48:55,005 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)] === [2024-06-21 15:48:55,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:55,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1586343176, now seen corresponding path program 14 times [2024-06-21 15:48:55,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:55,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005331668] [2024-06-21 15:48:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:55,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:48:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:48:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:48:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005331668] [2024-06-21 15:48:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005331668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:48:57,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:48:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:48:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313481498] [2024-06-21 15:48:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:48:57,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:48:57,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:48:57,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:48:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:48:57,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:48:57,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 238 transitions, 2148 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) [2024-06-21 15:48:57,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:48:57,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:48:57,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:48:58,432 INFO L124 PetriNetUnfolderBase]: 751/1345 cut-off events. [2024-06-21 15:48:58,432 INFO L125 PetriNetUnfolderBase]: For 107823/107826 co-relation queries the response was YES. [2024-06-21 15:48:58,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7331 conditions, 1345 events. 751/1345 cut-off events. For 107823/107826 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7159 event pairs, 130 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 7188. Up to 1180 conditions per place. [2024-06-21 15:48:58,445 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 220 selfloop transitions, 36 changer transitions 0/258 dead transitions. [2024-06-21 15:48:58,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 258 transitions, 2744 flow [2024-06-21 15:48:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:48:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:48:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 15:48:58,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 15:48:58,446 INFO L175 Difference]: Start difference. First operand has 292 places, 238 transitions, 2148 flow. Second operand 10 states and 112 transitions. [2024-06-21 15:48:58,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 258 transitions, 2744 flow [2024-06-21 15:48:58,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 258 transitions, 2606 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 15:48:58,778 INFO L231 Difference]: Finished difference. Result has 294 places, 239 transitions, 2126 flow [2024-06-21 15:48:58,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2126, PETRI_PLACES=294, PETRI_TRANSITIONS=239} [2024-06-21 15:48:58,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-21 15:48:58,778 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 239 transitions, 2126 flow [2024-06-21 15:48:58,778 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) [2024-06-21 15:48:58,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:48:58,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:48:58,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 15:48:58,779 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)] === [2024-06-21 15:48:58,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:48:58,779 INFO L85 PathProgramCache]: Analyzing trace with hash 720953660, now seen corresponding path program 15 times [2024-06-21 15:48:58,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:48:58,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843794916] [2024-06-21 15:48:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:48:58,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:48:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:01,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:01,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843794916] [2024-06-21 15:49:01,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843794916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:01,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:01,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040031765] [2024-06-21 15:49:01,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:01,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:01,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:01,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:01,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:01,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:01,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 239 transitions, 2126 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:01,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:01,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:01,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:02,195 INFO L124 PetriNetUnfolderBase]: 755/1353 cut-off events. [2024-06-21 15:49:02,195 INFO L125 PetriNetUnfolderBase]: For 109944/109947 co-relation queries the response was YES. [2024-06-21 15:49:02,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 1353 events. 755/1353 cut-off events. For 109944/109947 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7249 event pairs, 130 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 7188. Up to 1188 conditions per place. [2024-06-21 15:49:02,208 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 222 selfloop transitions, 35 changer transitions 0/259 dead transitions. [2024-06-21 15:49:02,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 259 transitions, 2726 flow [2024-06-21 15:49:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 15:49:02,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 15:49:02,209 INFO L175 Difference]: Start difference. First operand has 294 places, 239 transitions, 2126 flow. Second operand 10 states and 111 transitions. [2024-06-21 15:49:02,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 259 transitions, 2726 flow [2024-06-21 15:49:02,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 259 transitions, 2620 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:02,606 INFO L231 Difference]: Finished difference. Result has 296 places, 240 transitions, 2136 flow [2024-06-21 15:49:02,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2136, PETRI_PLACES=296, PETRI_TRANSITIONS=240} [2024-06-21 15:49:02,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-21 15:49:02,606 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 240 transitions, 2136 flow [2024-06-21 15:49:02,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:02,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:02,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:02,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 15:49:02,607 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)] === [2024-06-21 15:49:02,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1190544712, now seen corresponding path program 15 times [2024-06-21 15:49:02,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:02,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230898661] [2024-06-21 15:49:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:05,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230898661] [2024-06-21 15:49:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230898661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:05,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131164593] [2024-06-21 15:49:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:05,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:05,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:05,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 240 transitions, 2136 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) [2024-06-21 15:49:05,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:05,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:06,688 INFO L124 PetriNetUnfolderBase]: 761/1363 cut-off events. [2024-06-21 15:49:06,688 INFO L125 PetriNetUnfolderBase]: For 112181/112184 co-relation queries the response was YES. [2024-06-21 15:49:06,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7423 conditions, 1363 events. 761/1363 cut-off events. For 112181/112184 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7292 event pairs, 105 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 7278. Up to 1116 conditions per place. [2024-06-21 15:49:06,698 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 56 changer transitions 0/264 dead transitions. [2024-06-21 15:49:06,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 264 transitions, 2796 flow [2024-06-21 15:49:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 15:49:06,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 15:49:06,699 INFO L175 Difference]: Start difference. First operand has 296 places, 240 transitions, 2136 flow. Second operand 11 states and 125 transitions. [2024-06-21 15:49:06,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 264 transitions, 2796 flow [2024-06-21 15:49:07,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 264 transitions, 2690 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:07,015 INFO L231 Difference]: Finished difference. Result has 299 places, 242 transitions, 2233 flow [2024-06-21 15:49:07,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2233, PETRI_PLACES=299, PETRI_TRANSITIONS=242} [2024-06-21 15:49:07,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-21 15:49:07,016 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 242 transitions, 2233 flow [2024-06-21 15:49:07,016 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) [2024-06-21 15:49:07,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:07,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:07,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 15:49:07,016 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)] === [2024-06-21 15:49:07,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 721138234, now seen corresponding path program 16 times [2024-06-21 15:49:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056371450] [2024-06-21 15:49:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:11,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056371450] [2024-06-21 15:49:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056371450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:11,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:11,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009255638] [2024-06-21 15:49:11,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:11,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:11,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:11,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:11,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 242 transitions, 2233 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) [2024-06-21 15:49:11,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:11,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:11,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:12,178 INFO L124 PetriNetUnfolderBase]: 767/1373 cut-off events. [2024-06-21 15:49:12,178 INFO L125 PetriNetUnfolderBase]: For 114626/114629 co-relation queries the response was YES. [2024-06-21 15:49:12,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 1373 events. 767/1373 cut-off events. For 114626/114629 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7390 event pairs, 132 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 7441. Up to 1198 conditions per place. [2024-06-21 15:49:12,190 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 39 changer transitions 0/265 dead transitions. [2024-06-21 15:49:12,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 265 transitions, 2895 flow [2024-06-21 15:49:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 15:49:12,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-21 15:49:12,192 INFO L175 Difference]: Start difference. First operand has 299 places, 242 transitions, 2233 flow. Second operand 11 states and 122 transitions. [2024-06-21 15:49:12,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 265 transitions, 2895 flow [2024-06-21 15:49:12,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 265 transitions, 2714 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:12,517 INFO L231 Difference]: Finished difference. Result has 301 places, 244 transitions, 2225 flow [2024-06-21 15:49:12,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2225, PETRI_PLACES=301, PETRI_TRANSITIONS=244} [2024-06-21 15:49:12,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-21 15:49:12,518 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 244 transitions, 2225 flow [2024-06-21 15:49:12,518 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) [2024-06-21 15:49:12,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:12,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:12,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 15:49:12,519 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)] === [2024-06-21 15:49:12,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1196980746, now seen corresponding path program 16 times [2024-06-21 15:49:12,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:12,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339437400] [2024-06-21 15:49:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:12,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:15,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:15,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339437400] [2024-06-21 15:49:15,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339437400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:15,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:15,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033902509] [2024-06-21 15:49:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:15,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:15,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:15,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:15,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:15,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:15,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 244 transitions, 2225 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:15,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:15,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:15,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:16,509 INFO L124 PetriNetUnfolderBase]: 771/1381 cut-off events. [2024-06-21 15:49:16,509 INFO L125 PetriNetUnfolderBase]: For 116689/116692 co-relation queries the response was YES. [2024-06-21 15:49:16,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1381 events. 771/1381 cut-off events. For 116689/116692 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7423 event pairs, 109 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 7416. Up to 1158 conditions per place. [2024-06-21 15:49:16,522 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 211 selfloop transitions, 50 changer transitions 0/263 dead transitions. [2024-06-21 15:49:16,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 263 transitions, 2833 flow [2024-06-21 15:49:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 15:49:16,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-21 15:49:16,524 INFO L175 Difference]: Start difference. First operand has 301 places, 244 transitions, 2225 flow. Second operand 10 states and 111 transitions. [2024-06-21 15:49:16,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 263 transitions, 2833 flow [2024-06-21 15:49:16,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 263 transitions, 2682 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:16,854 INFO L231 Difference]: Finished difference. Result has 302 places, 245 transitions, 2222 flow [2024-06-21 15:49:16,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2222, PETRI_PLACES=302, PETRI_TRANSITIONS=245} [2024-06-21 15:49:16,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-21 15:49:16,854 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 245 transitions, 2222 flow [2024-06-21 15:49:16,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:16,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:16,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:16,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 15:49:16,855 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)] === [2024-06-21 15:49:16,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:16,855 INFO L85 PathProgramCache]: Analyzing trace with hash 550255880, now seen corresponding path program 17 times [2024-06-21 15:49:16,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:16,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030561411] [2024-06-21 15:49:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030561411] [2024-06-21 15:49:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030561411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:19,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772494229] [2024-06-21 15:49:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:19,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:19,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 245 transitions, 2222 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) [2024-06-21 15:49:19,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:19,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:19,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:19,954 INFO L124 PetriNetUnfolderBase]: 775/1389 cut-off events. [2024-06-21 15:49:19,954 INFO L125 PetriNetUnfolderBase]: For 118584/118587 co-relation queries the response was YES. [2024-06-21 15:49:19,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7618 conditions, 1389 events. 775/1389 cut-off events. For 118584/118587 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7485 event pairs, 140 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 7470. Up to 1238 conditions per place. [2024-06-21 15:49:19,964 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 33 changer transitions 0/263 dead transitions. [2024-06-21 15:49:19,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 263 transitions, 2828 flow [2024-06-21 15:49:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 15:49:19,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-21 15:49:19,966 INFO L175 Difference]: Start difference. First operand has 302 places, 245 transitions, 2222 flow. Second operand 10 states and 108 transitions. [2024-06-21 15:49:19,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 263 transitions, 2828 flow [2024-06-21 15:49:20,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 263 transitions, 2690 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:20,339 INFO L231 Difference]: Finished difference. Result has 304 places, 246 transitions, 2200 flow [2024-06-21 15:49:20,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2200, PETRI_PLACES=304, PETRI_TRANSITIONS=246} [2024-06-21 15:49:20,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-21 15:49:20,339 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 246 transitions, 2200 flow [2024-06-21 15:49:20,340 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) [2024-06-21 15:49:20,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:20,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:20,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 15:49:20,341 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)] === [2024-06-21 15:49:20,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:20,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1196985396, now seen corresponding path program 18 times [2024-06-21 15:49:20,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:20,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422871807] [2024-06-21 15:49:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:20,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422871807] [2024-06-21 15:49:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422871807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633584366] [2024-06-21 15:49:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:23,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:23,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:23,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:23,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:23,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 246 transitions, 2200 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) [2024-06-21 15:49:23,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:23,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:23,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:23,787 INFO L124 PetriNetUnfolderBase]: 779/1397 cut-off events. [2024-06-21 15:49:23,787 INFO L125 PetriNetUnfolderBase]: For 120661/120664 co-relation queries the response was YES. [2024-06-21 15:49:23,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 1397 events. 779/1397 cut-off events. For 120661/120664 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7533 event pairs, 111 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 7470. Up to 1174 conditions per place. [2024-06-21 15:49:23,801 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 214 selfloop transitions, 49 changer transitions 0/265 dead transitions. [2024-06-21 15:49:23,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 265 transitions, 2816 flow [2024-06-21 15:49:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 15:49:23,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:49:23,802 INFO L175 Difference]: Start difference. First operand has 304 places, 246 transitions, 2200 flow. Second operand 10 states and 110 transitions. [2024-06-21 15:49:23,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 265 transitions, 2816 flow [2024-06-21 15:49:24,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 265 transitions, 2710 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:24,166 INFO L231 Difference]: Finished difference. Result has 306 places, 247 transitions, 2244 flow [2024-06-21 15:49:24,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2244, PETRI_PLACES=306, PETRI_TRANSITIONS=247} [2024-06-21 15:49:24,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-21 15:49:24,166 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 247 transitions, 2244 flow [2024-06-21 15:49:24,166 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) [2024-06-21 15:49:24,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:24,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 15:49:24,167 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)] === [2024-06-21 15:49:24,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1196800822, now seen corresponding path program 17 times [2024-06-21 15:49:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:24,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046666921] [2024-06-21 15:49:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046666921] [2024-06-21 15:49:27,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046666921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:27,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:27,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:27,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664008343] [2024-06-21 15:49:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:27,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:27,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:27,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:27,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:27,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:27,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 247 transitions, 2244 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) [2024-06-21 15:49:27,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:27,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:27,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:28,078 INFO L124 PetriNetUnfolderBase]: 785/1407 cut-off events. [2024-06-21 15:49:28,078 INFO L125 PetriNetUnfolderBase]: For 123039/123042 co-relation queries the response was YES. [2024-06-21 15:49:28,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 1407 events. 785/1407 cut-off events. For 123039/123042 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7604 event pairs, 113 based on Foata normal form. 2/1403 useless extension candidates. Maximal degree in co-relation 7612. Up to 1174 conditions per place. [2024-06-21 15:49:28,090 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 53 changer transitions 0/269 dead transitions. [2024-06-21 15:49:28,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 269 transitions, 2916 flow [2024-06-21 15:49:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:49:28,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:49:28,092 INFO L175 Difference]: Start difference. First operand has 306 places, 247 transitions, 2244 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:49:28,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 269 transitions, 2916 flow [2024-06-21 15:49:28,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 269 transitions, 2776 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:28,494 INFO L231 Difference]: Finished difference. Result has 309 places, 249 transitions, 2309 flow [2024-06-21 15:49:28,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2309, PETRI_PLACES=309, PETRI_TRANSITIONS=249} [2024-06-21 15:49:28,495 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-21 15:49:28,495 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 249 transitions, 2309 flow [2024-06-21 15:49:28,495 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) [2024-06-21 15:49:28,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:28,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:28,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 15:49:28,498 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)] === [2024-06-21 15:49:28,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash 550251230, now seen corresponding path program 19 times [2024-06-21 15:49:28,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:28,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364474998] [2024-06-21 15:49:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:28,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364474998] [2024-06-21 15:49:30,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364474998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:30,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:30,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001589574] [2024-06-21 15:49:30,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:30,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:30,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:31,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:31,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 249 transitions, 2309 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) [2024-06-21 15:49:31,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:31,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:31,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:31,685 INFO L124 PetriNetUnfolderBase]: 789/1415 cut-off events. [2024-06-21 15:49:31,685 INFO L125 PetriNetUnfolderBase]: For 125301/125304 co-relation queries the response was YES. [2024-06-21 15:49:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1415 events. 789/1415 cut-off events. For 125301/125304 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7670 event pairs, 141 based on Foata normal form. 2/1411 useless extension candidates. Maximal degree in co-relation 7677. Up to 1264 conditions per place. [2024-06-21 15:49:31,698 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 32 changer transitions 0/267 dead transitions. [2024-06-21 15:49:31,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 267 transitions, 2927 flow [2024-06-21 15:49:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 15:49:31,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-21 15:49:31,700 INFO L175 Difference]: Start difference. First operand has 309 places, 249 transitions, 2309 flow. Second operand 10 states and 107 transitions. [2024-06-21 15:49:31,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 267 transitions, 2927 flow [2024-06-21 15:49:32,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 267 transitions, 2744 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:32,041 INFO L231 Difference]: Finished difference. Result has 310 places, 250 transitions, 2244 flow [2024-06-21 15:49:32,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2244, PETRI_PLACES=310, PETRI_TRANSITIONS=250} [2024-06-21 15:49:32,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-21 15:49:32,041 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 250 transitions, 2244 flow [2024-06-21 15:49:32,042 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) [2024-06-21 15:49:32,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:32,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:32,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 15:49:32,042 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)] === [2024-06-21 15:49:32,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1415520776, now seen corresponding path program 20 times [2024-06-21 15:49:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774596710] [2024-06-21 15:49:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:34,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774596710] [2024-06-21 15:49:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774596710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:34,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:34,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:34,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750436006] [2024-06-21 15:49:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:34,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:34,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:34,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:34,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 250 transitions, 2244 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) [2024-06-21 15:49:34,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:34,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:34,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:34,974 INFO L124 PetriNetUnfolderBase]: 786/1410 cut-off events. [2024-06-21 15:49:34,975 INFO L125 PetriNetUnfolderBase]: For 112737/112740 co-relation queries the response was YES. [2024-06-21 15:49:34,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 1410 events. 786/1410 cut-off events. For 112737/112740 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7647 event pairs, 138 based on Foata normal form. 2/1406 useless extension candidates. Maximal degree in co-relation 7237. Up to 1259 conditions per place. [2024-06-21 15:49:34,988 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 234 selfloop transitions, 31 changer transitions 0/267 dead transitions. [2024-06-21 15:49:34,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 267 transitions, 2814 flow [2024-06-21 15:49:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 15:49:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 15:49:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 15:49:34,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-21 15:49:34,989 INFO L175 Difference]: Start difference. First operand has 310 places, 250 transitions, 2244 flow. Second operand 10 states and 106 transitions. [2024-06-21 15:49:34,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 267 transitions, 2814 flow [2024-06-21 15:49:35,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 267 transitions, 2706 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 15:49:35,340 INFO L231 Difference]: Finished difference. Result has 312 places, 250 transitions, 2202 flow [2024-06-21 15:49:35,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2202, PETRI_PLACES=312, PETRI_TRANSITIONS=250} [2024-06-21 15:49:35,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-21 15:49:35,340 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 250 transitions, 2202 flow [2024-06-21 15:49:35,340 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) [2024-06-21 15:49:35,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:35,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:35,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 15:49:35,341 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)] === [2024-06-21 15:49:35,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1420289320, now seen corresponding path program 18 times [2024-06-21 15:49:35,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:35,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869193440] [2024-06-21 15:49:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:38,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:38,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869193440] [2024-06-21 15:49:38,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869193440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:38,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:38,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:49:38,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258251300] [2024-06-21 15:49:38,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:38,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:49:38,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:49:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:49:39,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:39,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 250 transitions, 2202 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) [2024-06-21 15:49:39,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:39,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:39,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:39,661 INFO L124 PetriNetUnfolderBase]: 782/1404 cut-off events. [2024-06-21 15:49:39,661 INFO L125 PetriNetUnfolderBase]: For 99763/99766 co-relation queries the response was YES. [2024-06-21 15:49:39,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7003 conditions, 1404 events. 782/1404 cut-off events. For 99763/99766 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7611 event pairs, 142 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 6850. Up to 1243 conditions per place. [2024-06-21 15:49:39,675 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 231 selfloop transitions, 36 changer transitions 0/269 dead transitions. [2024-06-21 15:49:39,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 269 transitions, 2780 flow [2024-06-21 15:49:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 15:49:39,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-21 15:49:39,677 INFO L175 Difference]: Start difference. First operand has 312 places, 250 transitions, 2202 flow. Second operand 11 states and 118 transitions. [2024-06-21 15:49:39,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 269 transitions, 2780 flow [2024-06-21 15:49:40,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 269 transitions, 2595 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:40,067 INFO L231 Difference]: Finished difference. Result has 314 places, 250 transitions, 2094 flow [2024-06-21 15:49:40,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2094, PETRI_PLACES=314, PETRI_TRANSITIONS=250} [2024-06-21 15:49:40,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-21 15:49:40,068 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 250 transitions, 2094 flow [2024-06-21 15:49:40,068 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) [2024-06-21 15:49:40,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:40,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:40,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 15:49:40,069 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)] === [2024-06-21 15:49:40,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2004590173, now seen corresponding path program 1 times [2024-06-21 15:49:40,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:40,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916474278] [2024-06-21 15:49:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:43,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:43,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916474278] [2024-06-21 15:49:43,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916474278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:43,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:43,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:43,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584624413] [2024-06-21 15:49:43,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:43,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:43,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:43,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:43,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:43,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:43,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 250 transitions, 2094 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) [2024-06-21 15:49:43,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:43,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:43,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:43,674 INFO L124 PetriNetUnfolderBase]: 786/1411 cut-off events. [2024-06-21 15:49:43,674 INFO L125 PetriNetUnfolderBase]: For 100034/100034 co-relation queries the response was YES. [2024-06-21 15:49:43,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6891 conditions, 1411 events. 786/1411 cut-off events. For 100034/100034 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7688 event pairs, 168 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 6737. Up to 1277 conditions per place. [2024-06-21 15:49:43,690 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 30 changer transitions 0/272 dead transitions. [2024-06-21 15:49:43,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 272 transitions, 2711 flow [2024-06-21 15:49:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:49:43,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-21 15:49:43,691 INFO L175 Difference]: Start difference. First operand has 314 places, 250 transitions, 2094 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:49:43,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 272 transitions, 2711 flow [2024-06-21 15:49:44,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 272 transitions, 2470 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-21 15:49:44,067 INFO L231 Difference]: Finished difference. Result has 314 places, 251 transitions, 1941 flow [2024-06-21 15:49:44,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1941, PETRI_PLACES=314, PETRI_TRANSITIONS=251} [2024-06-21 15:49:44,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-21 15:49:44,084 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 251 transitions, 1941 flow [2024-06-21 15:49:44,084 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) [2024-06-21 15:49:44,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:44,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:44,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 15:49:44,085 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)] === [2024-06-21 15:49:44,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1427380723, now seen corresponding path program 2 times [2024-06-21 15:49:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849522168] [2024-06-21 15:49:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:44,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:46,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849522168] [2024-06-21 15:49:46,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849522168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:46,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:46,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:46,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383989654] [2024-06-21 15:49:46,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:46,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:46,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:46,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:46,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:47,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:47,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 251 transitions, 1941 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) [2024-06-21 15:49:47,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:47,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:47,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:47,733 INFO L124 PetriNetUnfolderBase]: 790/1419 cut-off events. [2024-06-21 15:49:47,734 INFO L125 PetriNetUnfolderBase]: For 99253/99253 co-relation queries the response was YES. [2024-06-21 15:49:47,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 1419 events. 790/1419 cut-off events. For 99253/99253 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7732 event pairs, 168 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 6501. Up to 1285 conditions per place. [2024-06-21 15:49:47,747 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 29 changer transitions 0/273 dead transitions. [2024-06-21 15:49:47,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 273 transitions, 2562 flow [2024-06-21 15:49:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 15:49:47,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 15:49:47,749 INFO L175 Difference]: Start difference. First operand has 314 places, 251 transitions, 1941 flow. Second operand 11 states and 115 transitions. [2024-06-21 15:49:47,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 273 transitions, 2562 flow [2024-06-21 15:49:48,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 273 transitions, 2484 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:48,070 INFO L231 Difference]: Finished difference. Result has 316 places, 252 transitions, 1951 flow [2024-06-21 15:49:48,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1951, PETRI_PLACES=316, PETRI_TRANSITIONS=252} [2024-06-21 15:49:48,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 15:49:48,071 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 252 transitions, 1951 flow [2024-06-21 15:49:48,071 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) [2024-06-21 15:49:48,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:48,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:48,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 15:49:48,071 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)] === [2024-06-21 15:49:48,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1427524873, now seen corresponding path program 3 times [2024-06-21 15:49:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:48,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694382943] [2024-06-21 15:49:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:48,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:50,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694382943] [2024-06-21 15:49:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694382943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:50,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:50,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:49:50,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829702374] [2024-06-21 15:49:50,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:49:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:49:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:49:51,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:51,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 252 transitions, 1951 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:51,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:51,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:51,843 INFO L124 PetriNetUnfolderBase]: 794/1427 cut-off events. [2024-06-21 15:49:51,843 INFO L125 PetriNetUnfolderBase]: For 101020/101020 co-relation queries the response was YES. [2024-06-21 15:49:51,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1427 events. 794/1427 cut-off events. For 101020/101020 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7786 event pairs, 168 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 6547. Up to 1287 conditions per place. [2024-06-21 15:49:51,854 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 29 changer transitions 0/274 dead transitions. [2024-06-21 15:49:51,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 274 transitions, 2576 flow [2024-06-21 15:49:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:49:51,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 15:49:51,855 INFO L175 Difference]: Start difference. First operand has 316 places, 252 transitions, 1951 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:49:51,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 274 transitions, 2576 flow [2024-06-21 15:49:52,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 274 transitions, 2498 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:52,206 INFO L231 Difference]: Finished difference. Result has 318 places, 253 transitions, 1963 flow [2024-06-21 15:49:52,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1963, PETRI_PLACES=318, PETRI_TRANSITIONS=253} [2024-06-21 15:49:52,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-21 15:49:52,207 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 253 transitions, 1963 flow [2024-06-21 15:49:52,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:49:52,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:52,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:52,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 15:49:52,207 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)] === [2024-06-21 15:49:52,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:52,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1134820169, now seen corresponding path program 4 times [2024-06-21 15:49:52,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:52,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711132839] [2024-06-21 15:49:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:52,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711132839] [2024-06-21 15:49:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711132839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:54,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:54,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:54,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141388597] [2024-06-21 15:49:54,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:54,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:55,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:55,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 253 transitions, 1963 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) [2024-06-21 15:49:55,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:55,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:55,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:55,595 INFO L124 PetriNetUnfolderBase]: 798/1435 cut-off events. [2024-06-21 15:49:55,595 INFO L125 PetriNetUnfolderBase]: For 102837/102837 co-relation queries the response was YES. [2024-06-21 15:49:55,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 1435 events. 798/1435 cut-off events. For 102837/102837 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7843 event pairs, 168 based on Foata normal form. 2/1436 useless extension candidates. Maximal degree in co-relation 6599. Up to 1311 conditions per place. [2024-06-21 15:49:55,610 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 25 changer transitions 0/275 dead transitions. [2024-06-21 15:49:55,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 275 transitions, 2592 flow [2024-06-21 15:49:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-21 15:49:55,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-21 15:49:55,611 INFO L175 Difference]: Start difference. First operand has 318 places, 253 transitions, 1963 flow. Second operand 11 states and 113 transitions. [2024-06-21 15:49:55,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 275 transitions, 2592 flow [2024-06-21 15:49:55,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 275 transitions, 2512 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:55,966 INFO L231 Difference]: Finished difference. Result has 320 places, 254 transitions, 1967 flow [2024-06-21 15:49:55,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1967, PETRI_PLACES=320, PETRI_TRANSITIONS=254} [2024-06-21 15:49:55,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-21 15:49:55,967 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 254 transitions, 1967 flow [2024-06-21 15:49:55,967 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) [2024-06-21 15:49:55,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:55,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:55,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 15:49:55,968 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)] === [2024-06-21 15:49:55,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash -799683827, now seen corresponding path program 5 times [2024-06-21 15:49:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277442032] [2024-06-21 15:49:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:49:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:49:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:49:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277442032] [2024-06-21 15:49:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277442032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:49:58,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:49:58,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:49:58,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955723632] [2024-06-21 15:49:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:49:58,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:49:58,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:49:58,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:49:58,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:49:58,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:49:58,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 254 transitions, 1967 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) [2024-06-21 15:49:58,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:49:58,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:49:58,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:49:59,375 INFO L124 PetriNetUnfolderBase]: 802/1443 cut-off events. [2024-06-21 15:49:59,375 INFO L125 PetriNetUnfolderBase]: For 102698/102698 co-relation queries the response was YES. [2024-06-21 15:49:59,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6794 conditions, 1443 events. 802/1443 cut-off events. For 102698/102698 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7891 event pairs, 162 based on Foata normal form. 2/1444 useless extension candidates. Maximal degree in co-relation 6637. Up to 1315 conditions per place. [2024-06-21 15:49:59,391 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 252 selfloop transitions, 22 changer transitions 0/276 dead transitions. [2024-06-21 15:49:59,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 276 transitions, 2600 flow [2024-06-21 15:49:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:49:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:49:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 15:49:59,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-21 15:49:59,392 INFO L175 Difference]: Start difference. First operand has 320 places, 254 transitions, 1967 flow. Second operand 11 states and 111 transitions. [2024-06-21 15:49:59,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 276 transitions, 2600 flow [2024-06-21 15:49:59,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 276 transitions, 2526 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 15:49:59,790 INFO L231 Difference]: Finished difference. Result has 322 places, 255 transitions, 1973 flow [2024-06-21 15:49:59,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1973, PETRI_PLACES=322, PETRI_TRANSITIONS=255} [2024-06-21 15:49:59,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 15:49:59,790 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 255 transitions, 1973 flow [2024-06-21 15:49:59,790 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) [2024-06-21 15:49:59,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:49:59,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:49:59,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 15:49:59,791 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)] === [2024-06-21 15:49:59,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:49:59,791 INFO L85 PathProgramCache]: Analyzing trace with hash 423175919, now seen corresponding path program 1 times [2024-06-21 15:49:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:49:59,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296367914] [2024-06-21 15:49:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:49:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:49:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:03,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:03,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296367914] [2024-06-21 15:50:03,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296367914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:03,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:03,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:03,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666756173] [2024-06-21 15:50:03,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:03,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:03,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:03,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 255 transitions, 1973 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:03,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:03,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:03,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:04,387 INFO L124 PetriNetUnfolderBase]: 818/1479 cut-off events. [2024-06-21 15:50:04,388 INFO L125 PetriNetUnfolderBase]: For 166275/166275 co-relation queries the response was YES. [2024-06-21 15:50:04,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6905 conditions, 1479 events. 818/1479 cut-off events. For 166275/166275 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8161 event pairs, 184 based on Foata normal form. 10/1488 useless extension candidates. Maximal degree in co-relation 6747. Up to 1295 conditions per place. [2024-06-21 15:50:04,401 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 29 changer transitions 9/282 dead transitions. [2024-06-21 15:50:04,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 282 transitions, 2636 flow [2024-06-21 15:50:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:50:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:50:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 15:50:04,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-21 15:50:04,402 INFO L175 Difference]: Start difference. First operand has 322 places, 255 transitions, 1973 flow. Second operand 12 states and 129 transitions. [2024-06-21 15:50:04,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 282 transitions, 2636 flow [2024-06-21 15:50:04,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 282 transitions, 2566 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 15:50:04,862 INFO L231 Difference]: Finished difference. Result has 325 places, 252 transitions, 1945 flow [2024-06-21 15:50:04,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1945, PETRI_PLACES=325, PETRI_TRANSITIONS=252} [2024-06-21 15:50:04,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-21 15:50:04,862 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 252 transitions, 1945 flow [2024-06-21 15:50:04,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:04,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:04,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:04,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 15:50:04,863 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)] === [2024-06-21 15:50:04,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash -58707653, now seen corresponding path program 6 times [2024-06-21 15:50:04,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:04,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264435740] [2024-06-21 15:50:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:04,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264435740] [2024-06-21 15:50:07,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264435740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:07,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:07,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659932047] [2024-06-21 15:50:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:07,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:08,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:08,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 252 transitions, 1945 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:08,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:08,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:08,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:08,841 INFO L124 PetriNetUnfolderBase]: 812/1472 cut-off events. [2024-06-21 15:50:08,842 INFO L125 PetriNetUnfolderBase]: For 183879/183879 co-relation queries the response was YES. [2024-06-21 15:50:08,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6901 conditions, 1472 events. 812/1472 cut-off events. For 183879/183879 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8117 event pairs, 166 based on Foata normal form. 12/1483 useless extension candidates. Maximal degree in co-relation 6742. Up to 1241 conditions per place. [2024-06-21 15:50:08,857 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 36 changer transitions 14/278 dead transitions. [2024-06-21 15:50:08,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 278 transitions, 2623 flow [2024-06-21 15:50:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 15:50:08,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-21 15:50:08,858 INFO L175 Difference]: Start difference. First operand has 325 places, 252 transitions, 1945 flow. Second operand 11 states and 124 transitions. [2024-06-21 15:50:08,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 278 transitions, 2623 flow [2024-06-21 15:50:09,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 278 transitions, 2559 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 15:50:09,262 INFO L231 Difference]: Finished difference. Result has 322 places, 247 transitions, 1923 flow [2024-06-21 15:50:09,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1923, PETRI_PLACES=322, PETRI_TRANSITIONS=247} [2024-06-21 15:50:09,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 15:50:09,263 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 247 transitions, 1923 flow [2024-06-21 15:50:09,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:09,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:09,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:09,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 15:50:09,264 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)] === [2024-06-21 15:50:09,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -58713233, now seen corresponding path program 7 times [2024-06-21 15:50:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:09,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280072124] [2024-06-21 15:50:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:12,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:12,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280072124] [2024-06-21 15:50:12,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280072124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:12,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:12,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354792185] [2024-06-21 15:50:12,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:12,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:12,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:12,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 247 transitions, 1923 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:12,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:12,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:12,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:13,131 INFO L124 PetriNetUnfolderBase]: 780/1412 cut-off events. [2024-06-21 15:50:13,132 INFO L125 PetriNetUnfolderBase]: For 106952/106952 co-relation queries the response was YES. [2024-06-21 15:50:13,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 1412 events. 780/1412 cut-off events. For 106952/106952 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7725 event pairs, 162 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6502. Up to 1235 conditions per place. [2024-06-21 15:50:13,146 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 38 changer transitions 0/269 dead transitions. [2024-06-21 15:50:13,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 269 transitions, 2539 flow [2024-06-21 15:50:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 15:50:13,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 15:50:13,148 INFO L175 Difference]: Start difference. First operand has 322 places, 247 transitions, 1923 flow. Second operand 11 states and 117 transitions. [2024-06-21 15:50:13,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 269 transitions, 2539 flow [2024-06-21 15:50:13,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 269 transitions, 2461 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 15:50:13,531 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 1959 flow [2024-06-21 15:50:13,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1959, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-21 15:50:13,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-21 15:50:13,531 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 1959 flow [2024-06-21 15:50:13,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:13,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:13,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:13,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 15:50:13,532 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)] === [2024-06-21 15:50:13,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -594087185, now seen corresponding path program 8 times [2024-06-21 15:50:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255539501] [2024-06-21 15:50:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:16,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:16,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255539501] [2024-06-21 15:50:16,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255539501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:16,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:16,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:16,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991478029] [2024-06-21 15:50:16,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:16,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:16,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:16,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:16,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 1959 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:16,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:16,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:16,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:17,421 INFO L124 PetriNetUnfolderBase]: 784/1420 cut-off events. [2024-06-21 15:50:17,421 INFO L125 PetriNetUnfolderBase]: For 104231/104231 co-relation queries the response was YES. [2024-06-21 15:50:17,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6732 conditions, 1420 events. 784/1420 cut-off events. For 104231/104231 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7803 event pairs, 160 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 6576. Up to 1243 conditions per place. [2024-06-21 15:50:17,433 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 230 selfloop transitions, 38 changer transitions 0/270 dead transitions. [2024-06-21 15:50:17,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 270 transitions, 2579 flow [2024-06-21 15:50:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 15:50:17,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 15:50:17,434 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 1959 flow. Second operand 11 states and 117 transitions. [2024-06-21 15:50:17,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 270 transitions, 2579 flow [2024-06-21 15:50:17,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 270 transitions, 2475 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 15:50:17,844 INFO L231 Difference]: Finished difference. Result has 320 places, 249 transitions, 1971 flow [2024-06-21 15:50:17,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1971, PETRI_PLACES=320, PETRI_TRANSITIONS=249} [2024-06-21 15:50:17,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-21 15:50:17,845 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 249 transitions, 1971 flow [2024-06-21 15:50:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:17,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:17,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 15:50:17,846 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)] === [2024-06-21 15:50:17,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -394635665, now seen corresponding path program 9 times [2024-06-21 15:50:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:17,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450630833] [2024-06-21 15:50:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:20,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450630833] [2024-06-21 15:50:20,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450630833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:20,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:20,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:20,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127433371] [2024-06-21 15:50:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:20,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:20,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:20,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:20,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 249 transitions, 1971 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:20,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:20,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:20,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:21,503 INFO L124 PetriNetUnfolderBase]: 788/1428 cut-off events. [2024-06-21 15:50:21,503 INFO L125 PetriNetUnfolderBase]: For 106264/106264 co-relation queries the response was YES. [2024-06-21 15:50:21,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1428 events. 788/1428 cut-off events. For 106264/106264 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7871 event pairs, 160 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 6628. Up to 1212 conditions per place. [2024-06-21 15:50:21,518 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 47 changer transitions 0/272 dead transitions. [2024-06-21 15:50:21,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 272 transitions, 2601 flow [2024-06-21 15:50:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:50:21,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:50:21,519 INFO L175 Difference]: Start difference. First operand has 320 places, 249 transitions, 1971 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:50:21,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 272 transitions, 2601 flow [2024-06-21 15:50:21,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 272 transitions, 2495 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 15:50:21,906 INFO L231 Difference]: Finished difference. Result has 322 places, 250 transitions, 2001 flow [2024-06-21 15:50:21,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2001, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2024-06-21 15:50:21,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 15:50:21,906 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 2001 flow [2024-06-21 15:50:21,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:21,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:21,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 15:50:21,907 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)] === [2024-06-21 15:50:21,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -387284015, now seen corresponding path program 10 times [2024-06-21 15:50:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211711351] [2024-06-21 15:50:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211711351] [2024-06-21 15:50:25,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211711351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:25,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:25,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:25,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920976135] [2024-06-21 15:50:25,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:25,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:25,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:25,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 2001 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:25,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:25,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:25,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:26,282 INFO L124 PetriNetUnfolderBase]: 792/1436 cut-off events. [2024-06-21 15:50:26,283 INFO L125 PetriNetUnfolderBase]: For 108097/108097 co-relation queries the response was YES. [2024-06-21 15:50:26,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 1436 events. 792/1436 cut-off events. For 108097/108097 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7925 event pairs, 160 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 6702. Up to 1185 conditions per place. [2024-06-21 15:50:26,298 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 54 changer transitions 0/274 dead transitions. [2024-06-21 15:50:26,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 274 transitions, 2641 flow [2024-06-21 15:50:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:50:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:50:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 15:50:26,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 15:50:26,299 INFO L175 Difference]: Start difference. First operand has 322 places, 250 transitions, 2001 flow. Second operand 11 states and 123 transitions. [2024-06-21 15:50:26,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 274 transitions, 2641 flow [2024-06-21 15:50:26,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 274 transitions, 2515 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 15:50:26,733 INFO L231 Difference]: Finished difference. Result has 324 places, 251 transitions, 2027 flow [2024-06-21 15:50:26,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2027, PETRI_PLACES=324, PETRI_TRANSITIONS=251} [2024-06-21 15:50:26,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-21 15:50:26,733 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 251 transitions, 2027 flow [2024-06-21 15:50:26,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:26,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:26,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:26,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 15:50:26,734 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)] === [2024-06-21 15:50:26,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:26,734 INFO L85 PathProgramCache]: Analyzing trace with hash -394641245, now seen corresponding path program 11 times [2024-06-21 15:50:26,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:26,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535329913] [2024-06-21 15:50:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:26,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535329913] [2024-06-21 15:50:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535329913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:29,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:29,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:29,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961343635] [2024-06-21 15:50:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:29,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:29,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:29,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 251 transitions, 2027 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:29,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:29,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:29,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:30,813 INFO L124 PetriNetUnfolderBase]: 825/1503 cut-off events. [2024-06-21 15:50:30,813 INFO L125 PetriNetUnfolderBase]: For 185398/185398 co-relation queries the response was YES. [2024-06-21 15:50:30,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8395 conditions, 1503 events. 825/1503 cut-off events. For 185398/185398 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8329 event pairs, 173 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 8236. Up to 1192 conditions per place. [2024-06-21 15:50:30,829 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 49 changer transitions 0/281 dead transitions. [2024-06-21 15:50:30,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 281 transitions, 2977 flow [2024-06-21 15:50:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:50:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:50:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 15:50:30,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 15:50:30,830 INFO L175 Difference]: Start difference. First operand has 324 places, 251 transitions, 2027 flow. Second operand 12 states and 136 transitions. [2024-06-21 15:50:30,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 281 transitions, 2977 flow [2024-06-21 15:50:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 281 transitions, 2835 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 15:50:31,408 INFO L231 Difference]: Finished difference. Result has 327 places, 252 transitions, 2029 flow [2024-06-21 15:50:31,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2029, PETRI_PLACES=327, PETRI_TRANSITIONS=252} [2024-06-21 15:50:31,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-21 15:50:31,409 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 252 transitions, 2029 flow [2024-06-21 15:50:31,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:31,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:31,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:31,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 15:50:31,409 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)] === [2024-06-21 15:50:31,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash -387016609, now seen corresponding path program 2 times [2024-06-21 15:50:31,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:31,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961885630] [2024-06-21 15:50:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:31,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:34,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961885630] [2024-06-21 15:50:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961885630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:34,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:34,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312313667] [2024-06-21 15:50:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:34,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:34,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:34,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:34,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:34,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 252 transitions, 2029 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:34,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:34,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:34,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:35,807 INFO L124 PetriNetUnfolderBase]: 841/1539 cut-off events. [2024-06-21 15:50:35,808 INFO L125 PetriNetUnfolderBase]: For 249037/249037 co-relation queries the response was YES. [2024-06-21 15:50:35,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8488 conditions, 1539 events. 841/1539 cut-off events. For 249037/249037 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8587 event pairs, 179 based on Foata normal form. 10/1548 useless extension candidates. Maximal degree in co-relation 8328. Up to 1209 conditions per place. [2024-06-21 15:50:35,825 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 59 changer transitions 12/282 dead transitions. [2024-06-21 15:50:35,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 282 transitions, 2699 flow [2024-06-21 15:50:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:50:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:50:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 15:50:35,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-21 15:50:35,826 INFO L175 Difference]: Start difference. First operand has 327 places, 252 transitions, 2029 flow. Second operand 12 states and 137 transitions. [2024-06-21 15:50:35,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 282 transitions, 2699 flow [2024-06-21 15:50:36,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 282 transitions, 2565 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:36,472 INFO L231 Difference]: Finished difference. Result has 329 places, 248 transitions, 1981 flow [2024-06-21 15:50:36,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1981, PETRI_PLACES=329, PETRI_TRANSITIONS=248} [2024-06-21 15:50:36,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-21 15:50:36,473 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 248 transitions, 1981 flow [2024-06-21 15:50:36,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:36,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:36,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:36,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 15:50:36,474 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)] === [2024-06-21 15:50:36,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:36,474 INFO L85 PathProgramCache]: Analyzing trace with hash 363933337, now seen corresponding path program 3 times [2024-06-21 15:50:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095121241] [2024-06-21 15:50:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:40,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:40,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095121241] [2024-06-21 15:50:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095121241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:40,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:50:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186232264] [2024-06-21 15:50:40,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:40,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:50:40,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:40,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:50:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:50:41,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:41,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 248 transitions, 1981 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) [2024-06-21 15:50:41,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:41,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:41,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:42,230 INFO L124 PetriNetUnfolderBase]: 914/1659 cut-off events. [2024-06-21 15:50:42,230 INFO L125 PetriNetUnfolderBase]: For 174526/174526 co-relation queries the response was YES. [2024-06-21 15:50:42,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 1659 events. 914/1659 cut-off events. For 174526/174526 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9391 event pairs, 190 based on Foata normal form. 10/1664 useless extension candidates. Maximal degree in co-relation 7593. Up to 1391 conditions per place. [2024-06-21 15:50:42,247 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 50 changer transitions 11/324 dead transitions. [2024-06-21 15:50:42,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 324 transitions, 3150 flow [2024-06-21 15:50:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:50:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:50:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-21 15:50:42,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-21 15:50:42,248 INFO L175 Difference]: Start difference. First operand has 329 places, 248 transitions, 1981 flow. Second operand 12 states and 142 transitions. [2024-06-21 15:50:42,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 324 transitions, 3150 flow [2024-06-21 15:50:42,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 324 transitions, 2912 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 15:50:42,792 INFO L231 Difference]: Finished difference. Result has 334 places, 282 transitions, 2315 flow [2024-06-21 15:50:42,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2315, PETRI_PLACES=334, PETRI_TRANSITIONS=282} [2024-06-21 15:50:42,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-21 15:50:42,792 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 282 transitions, 2315 flow [2024-06-21 15:50:42,792 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) [2024-06-21 15:50:42,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:42,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:42,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 15:50:42,793 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)] === [2024-06-21 15:50:42,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:42,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1881247303, now seen corresponding path program 4 times [2024-06-21 15:50:42,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:42,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081467970] [2024-06-21 15:50:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:42,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081467970] [2024-06-21 15:50:46,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081467970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:46,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544086287] [2024-06-21 15:50:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:46,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:46,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:46,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 282 transitions, 2315 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:46,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:46,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:47,776 INFO L124 PetriNetUnfolderBase]: 910/1655 cut-off events. [2024-06-21 15:50:47,777 INFO L125 PetriNetUnfolderBase]: For 174855/174855 co-relation queries the response was YES. [2024-06-21 15:50:47,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7730 conditions, 1655 events. 910/1655 cut-off events. For 174855/174855 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9398 event pairs, 178 based on Foata normal form. 10/1664 useless extension candidates. Maximal degree in co-relation 7562. Up to 1402 conditions per place. [2024-06-21 15:50:47,791 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 262 selfloop transitions, 47 changer transitions 11/322 dead transitions. [2024-06-21 15:50:47,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 322 transitions, 3130 flow [2024-06-21 15:50:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:50:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:50:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-21 15:50:47,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-21 15:50:47,792 INFO L175 Difference]: Start difference. First operand has 334 places, 282 transitions, 2315 flow. Second operand 13 states and 145 transitions. [2024-06-21 15:50:47,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 322 transitions, 3130 flow [2024-06-21 15:50:48,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 322 transitions, 3085 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 15:50:48,341 INFO L231 Difference]: Finished difference. Result has 343 places, 283 transitions, 2397 flow [2024-06-21 15:50:48,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2397, PETRI_PLACES=343, PETRI_TRANSITIONS=283} [2024-06-21 15:50:48,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 15:50:48,342 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 283 transitions, 2397 flow [2024-06-21 15:50:48,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:48,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:48,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:48,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 15:50:48,342 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)] === [2024-06-21 15:50:48,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -270584389, now seen corresponding path program 5 times [2024-06-21 15:50:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:48,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352880398] [2024-06-21 15:50:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:48,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:52,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:52,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352880398] [2024-06-21 15:50:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352880398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:52,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:52,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042299023] [2024-06-21 15:50:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:52,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:52,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:52,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:52,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 283 transitions, 2397 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:52,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:52,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:52,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:53,128 INFO L124 PetriNetUnfolderBase]: 904/1649 cut-off events. [2024-06-21 15:50:53,129 INFO L125 PetriNetUnfolderBase]: For 175150/175150 co-relation queries the response was YES. [2024-06-21 15:50:53,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 1649 events. 904/1649 cut-off events. For 175150/175150 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9366 event pairs, 176 based on Foata normal form. 10/1658 useless extension candidates. Maximal degree in co-relation 7603. Up to 1355 conditions per place. [2024-06-21 15:50:53,145 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 256 selfloop transitions, 54 changer transitions 9/321 dead transitions. [2024-06-21 15:50:53,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 321 transitions, 3190 flow [2024-06-21 15:50:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:50:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:50:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-21 15:50:53,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557692307692308 [2024-06-21 15:50:53,146 INFO L175 Difference]: Start difference. First operand has 343 places, 283 transitions, 2397 flow. Second operand 13 states and 148 transitions. [2024-06-21 15:50:53,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 321 transitions, 3190 flow [2024-06-21 15:50:53,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 321 transitions, 3055 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-21 15:50:53,596 INFO L231 Difference]: Finished difference. Result has 344 places, 281 transitions, 2360 flow [2024-06-21 15:50:53,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2360, PETRI_PLACES=344, PETRI_TRANSITIONS=281} [2024-06-21 15:50:53,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 15:50:53,597 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 281 transitions, 2360 flow [2024-06-21 15:50:53,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:53,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:53,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:53,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 15:50:53,598 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)] === [2024-06-21 15:50:53,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1351128443, now seen corresponding path program 6 times [2024-06-21 15:50:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340059097] [2024-06-21 15:50:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:50:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:50:56,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:50:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340059097] [2024-06-21 15:50:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340059097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:50:56,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:50:56,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:50:56,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857346841] [2024-06-21 15:50:56,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:50:56,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:50:56,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:50:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:50:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:50:57,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:50:57,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 281 transitions, 2360 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:57,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:50:57,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:50:57,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:50:58,083 INFO L124 PetriNetUnfolderBase]: 957/1760 cut-off events. [2024-06-21 15:50:58,083 INFO L125 PetriNetUnfolderBase]: For 253256/253256 co-relation queries the response was YES. [2024-06-21 15:50:58,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9699 conditions, 1760 events. 957/1760 cut-off events. For 253256/253256 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10166 event pairs, 196 based on Foata normal form. 8/1767 useless extension candidates. Maximal degree in co-relation 9533. Up to 1353 conditions per place. [2024-06-21 15:50:58,100 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 262 selfloop transitions, 54 changer transitions 12/330 dead transitions. [2024-06-21 15:50:58,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 330 transitions, 3545 flow [2024-06-21 15:50:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:50:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:50:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 15:50:58,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 15:50:58,101 INFO L175 Difference]: Start difference. First operand has 344 places, 281 transitions, 2360 flow. Second operand 12 states and 144 transitions. [2024-06-21 15:50:58,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 330 transitions, 3545 flow [2024-06-21 15:50:58,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 330 transitions, 3408 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-21 15:50:58,735 INFO L231 Difference]: Finished difference. Result has 344 places, 284 transitions, 2418 flow [2024-06-21 15:50:58,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2227, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2418, PETRI_PLACES=344, PETRI_TRANSITIONS=284} [2024-06-21 15:50:58,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 15:50:58,735 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 284 transitions, 2418 flow [2024-06-21 15:50:58,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:50:58,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:50:58,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:50:58,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 15:50:58,736 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)] === [2024-06-21 15:50:58,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:50:58,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1992250919, now seen corresponding path program 12 times [2024-06-21 15:50:58,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:50:58,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795504675] [2024-06-21 15:50:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:50:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:50:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:01,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:01,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795504675] [2024-06-21 15:51:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795504675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:01,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:01,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472680265] [2024-06-21 15:51:01,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:01,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:01,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:01,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:01,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:01,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:01,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 284 transitions, 2418 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:01,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:01,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:01,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:02,648 INFO L124 PetriNetUnfolderBase]: 919/1686 cut-off events. [2024-06-21 15:51:02,649 INFO L125 PetriNetUnfolderBase]: For 188616/188616 co-relation queries the response was YES. [2024-06-21 15:51:02,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9153 conditions, 1686 events. 919/1686 cut-off events. For 188616/188616 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9632 event pairs, 199 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 8987. Up to 1551 conditions per place. [2024-06-21 15:51:02,668 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 34 changer transitions 0/310 dead transitions. [2024-06-21 15:51:02,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 310 transitions, 3109 flow [2024-06-21 15:51:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 15:51:02,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-21 15:51:02,670 INFO L175 Difference]: Start difference. First operand has 344 places, 284 transitions, 2418 flow. Second operand 12 states and 129 transitions. [2024-06-21 15:51:02,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 310 transitions, 3109 flow [2024-06-21 15:51:03,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 310 transitions, 3012 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 15:51:03,354 INFO L231 Difference]: Finished difference. Result has 347 places, 286 transitions, 2425 flow [2024-06-21 15:51:03,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2425, PETRI_PLACES=347, PETRI_TRANSITIONS=286} [2024-06-21 15:51:03,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 15:51:03,355 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 286 transitions, 2425 flow [2024-06-21 15:51:03,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:03,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:03,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:03,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 15:51:03,355 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)] === [2024-06-21 15:51:03,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1474059379, now seen corresponding path program 13 times [2024-06-21 15:51:03,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75615193] [2024-06-21 15:51:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:03,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:06,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:06,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75615193] [2024-06-21 15:51:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75615193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:06,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:06,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:06,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165164053] [2024-06-21 15:51:06,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:06,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:06,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:06,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 286 transitions, 2425 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:06,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:06,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:06,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:07,211 INFO L124 PetriNetUnfolderBase]: 927/1702 cut-off events. [2024-06-21 15:51:07,211 INFO L125 PetriNetUnfolderBase]: For 189413/189413 co-relation queries the response was YES. [2024-06-21 15:51:07,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9262 conditions, 1702 events. 927/1702 cut-off events. For 189413/189413 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9758 event pairs, 199 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 9095. Up to 1567 conditions per place. [2024-06-21 15:51:07,231 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 33 changer transitions 0/312 dead transitions. [2024-06-21 15:51:07,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 312 transitions, 3151 flow [2024-06-21 15:51:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-21 15:51:07,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-21 15:51:07,232 INFO L175 Difference]: Start difference. First operand has 347 places, 286 transitions, 2425 flow. Second operand 12 states and 128 transitions. [2024-06-21 15:51:07,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 312 transitions, 3151 flow [2024-06-21 15:51:07,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 312 transitions, 3058 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 15:51:07,949 INFO L231 Difference]: Finished difference. Result has 354 places, 288 transitions, 2455 flow [2024-06-21 15:51:07,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2455, PETRI_PLACES=354, PETRI_TRANSITIONS=288} [2024-06-21 15:51:07,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-21 15:51:07,950 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 288 transitions, 2455 flow [2024-06-21 15:51:07,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:07,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:07,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:07,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 15:51:07,950 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)] === [2024-06-21 15:51:07,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1474203529, now seen corresponding path program 14 times [2024-06-21 15:51:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836759932] [2024-06-21 15:51:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:07,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836759932] [2024-06-21 15:51:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836759932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:10,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390604625] [2024-06-21 15:51:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:10,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:10,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 288 transitions, 2455 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:10,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:10,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:10,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:11,259 INFO L124 PetriNetUnfolderBase]: 939/1726 cut-off events. [2024-06-21 15:51:11,259 INFO L125 PetriNetUnfolderBase]: For 192546/192546 co-relation queries the response was YES. [2024-06-21 15:51:11,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 1726 events. 939/1726 cut-off events. For 192546/192546 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9972 event pairs, 201 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 9215. Up to 1591 conditions per place. [2024-06-21 15:51:11,275 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 32 changer transitions 0/315 dead transitions. [2024-06-21 15:51:11,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 315 transitions, 3193 flow [2024-06-21 15:51:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 15:51:11,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-21 15:51:11,277 INFO L175 Difference]: Start difference. First operand has 354 places, 288 transitions, 2455 flow. Second operand 12 states and 127 transitions. [2024-06-21 15:51:11,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 315 transitions, 3193 flow [2024-06-21 15:51:11,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 315 transitions, 3089 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 15:51:11,925 INFO L231 Difference]: Finished difference. Result has 359 places, 291 transitions, 2482 flow [2024-06-21 15:51:11,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2482, PETRI_PLACES=359, PETRI_TRANSITIONS=291} [2024-06-21 15:51:11,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 15:51:11,926 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 291 transitions, 2482 flow [2024-06-21 15:51:11,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:11,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:11,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:11,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 15:51:11,926 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)] === [2024-06-21 15:51:11,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 291490539, now seen corresponding path program 7 times [2024-06-21 15:51:11,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:11,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028966386] [2024-06-21 15:51:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028966386] [2024-06-21 15:51:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028966386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:15,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:15,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002772650] [2024-06-21 15:51:15,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:15,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:15,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:15,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:15,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 291 transitions, 2482 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:15,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:15,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:15,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:16,373 INFO L124 PetriNetUnfolderBase]: 926/1703 cut-off events. [2024-06-21 15:51:16,373 INFO L125 PetriNetUnfolderBase]: For 178811/178811 co-relation queries the response was YES. [2024-06-21 15:51:16,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 1703 events. 926/1703 cut-off events. For 178811/178811 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9856 event pairs, 196 based on Foata normal form. 10/1712 useless extension candidates. Maximal degree in co-relation 7831. Up to 1524 conditions per place. [2024-06-21 15:51:16,394 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 276 selfloop transitions, 32 changer transitions 11/321 dead transitions. [2024-06-21 15:51:16,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 321 transitions, 3227 flow [2024-06-21 15:51:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:51:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:51:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-21 15:51:16,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3389423076923077 [2024-06-21 15:51:16,395 INFO L175 Difference]: Start difference. First operand has 359 places, 291 transitions, 2482 flow. Second operand 13 states and 141 transitions. [2024-06-21 15:51:16,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 321 transitions, 3227 flow [2024-06-21 15:51:16,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 321 transitions, 3125 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 15:51:16,897 INFO L231 Difference]: Finished difference. Result has 364 places, 288 transitions, 2418 flow [2024-06-21 15:51:16,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2418, PETRI_PLACES=364, PETRI_TRANSITIONS=288} [2024-06-21 15:51:16,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 15:51:16,898 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 288 transitions, 2418 flow [2024-06-21 15:51:16,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:16,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:16,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:16,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 15:51:16,899 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)] === [2024-06-21 15:51:16,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 143665613, now seen corresponding path program 15 times [2024-06-21 15:51:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995306374] [2024-06-21 15:51:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:19,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995306374] [2024-06-21 15:51:19,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995306374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:19,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:19,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:19,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86216647] [2024-06-21 15:51:19,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:19,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:19,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:19,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 288 transitions, 2418 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:19,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:19,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:19,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:20,469 INFO L124 PetriNetUnfolderBase]: 916/1685 cut-off events. [2024-06-21 15:51:20,469 INFO L125 PetriNetUnfolderBase]: For 117816/117816 co-relation queries the response was YES. [2024-06-21 15:51:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1685 events. 916/1685 cut-off events. For 117816/117816 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9817 event pairs, 190 based on Foata normal form. 2/1686 useless extension candidates. Maximal degree in co-relation 7719. Up to 1550 conditions per place. [2024-06-21 15:51:20,488 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 283 selfloop transitions, 31 changer transitions 0/316 dead transitions. [2024-06-21 15:51:20,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 316 transitions, 3164 flow [2024-06-21 15:51:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:20,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 15:51:20,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 15:51:20,489 INFO L175 Difference]: Start difference. First operand has 364 places, 288 transitions, 2418 flow. Second operand 12 states and 126 transitions. [2024-06-21 15:51:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 316 transitions, 3164 flow [2024-06-21 15:51:20,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 316 transitions, 3076 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 15:51:20,986 INFO L231 Difference]: Finished difference. Result has 364 places, 292 transitions, 2469 flow [2024-06-21 15:51:20,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2469, PETRI_PLACES=364, PETRI_TRANSITIONS=292} [2024-06-21 15:51:20,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 15:51:20,987 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 292 transitions, 2469 flow [2024-06-21 15:51:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:20,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:20,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:20,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 15:51:20,987 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)] === [2024-06-21 15:51:20,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1866908863, now seen corresponding path program 8 times [2024-06-21 15:51:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226604563] [2024-06-21 15:51:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:24,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:24,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226604563] [2024-06-21 15:51:24,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226604563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:24,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:24,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:24,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473919243] [2024-06-21 15:51:24,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:24,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:24,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:24,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:24,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 292 transitions, 2469 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:24,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:24,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:24,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:25,735 INFO L124 PetriNetUnfolderBase]: 932/1720 cut-off events. [2024-06-21 15:51:25,735 INFO L125 PetriNetUnfolderBase]: For 182872/182872 co-relation queries the response was YES. [2024-06-21 15:51:25,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8041 conditions, 1720 events. 932/1720 cut-off events. For 182872/182872 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10040 event pairs, 178 based on Foata normal form. 10/1729 useless extension candidates. Maximal degree in co-relation 7866. Up to 1337 conditions per place. [2024-06-21 15:51:25,755 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 231 selfloop transitions, 68 changer transitions 19/320 dead transitions. [2024-06-21 15:51:25,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 320 transitions, 3207 flow [2024-06-21 15:51:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 15:51:25,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-21 15:51:25,756 INFO L175 Difference]: Start difference. First operand has 364 places, 292 transitions, 2469 flow. Second operand 12 states and 134 transitions. [2024-06-21 15:51:25,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 320 transitions, 3207 flow [2024-06-21 15:51:26,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 320 transitions, 3107 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 15:51:26,267 INFO L231 Difference]: Finished difference. Result has 369 places, 283 transitions, 2440 flow [2024-06-21 15:51:26,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2440, PETRI_PLACES=369, PETRI_TRANSITIONS=283} [2024-06-21 15:51:26,268 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-21 15:51:26,268 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 283 transitions, 2440 flow [2024-06-21 15:51:26,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:26,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:26,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:26,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 15:51:26,268 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)] === [2024-06-21 15:51:26,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash 148222493, now seen corresponding path program 9 times [2024-06-21 15:51:26,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640017054] [2024-06-21 15:51:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640017054] [2024-06-21 15:51:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640017054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:29,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:29,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651814603] [2024-06-21 15:51:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:29,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:29,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 283 transitions, 2440 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:29,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:29,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:29,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:30,720 INFO L124 PetriNetUnfolderBase]: 927/1721 cut-off events. [2024-06-21 15:51:30,720 INFO L125 PetriNetUnfolderBase]: For 248545/248545 co-relation queries the response was YES. [2024-06-21 15:51:30,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9360 conditions, 1721 events. 927/1721 cut-off events. For 248545/248545 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10000 event pairs, 185 based on Foata normal form. 8/1728 useless extension candidates. Maximal degree in co-relation 9184. Up to 1212 conditions per place. [2024-06-21 15:51:30,740 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 73 changer transitions 13/318 dead transitions. [2024-06-21 15:51:30,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 318 transitions, 3474 flow [2024-06-21 15:51:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 15:51:30,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 15:51:30,741 INFO L175 Difference]: Start difference. First operand has 369 places, 283 transitions, 2440 flow. Second operand 12 states and 140 transitions. [2024-06-21 15:51:30,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 318 transitions, 3474 flow [2024-06-21 15:51:31,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 318 transitions, 3312 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-21 15:51:31,536 INFO L231 Difference]: Finished difference. Result has 362 places, 277 transitions, 2384 flow [2024-06-21 15:51:31,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2384, PETRI_PLACES=362, PETRI_TRANSITIONS=277} [2024-06-21 15:51:31,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-21 15:51:31,537 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 277 transitions, 2384 flow [2024-06-21 15:51:31,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:31,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:31,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:31,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 15:51:31,537 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)] === [2024-06-21 15:51:31,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash -839536073, now seen corresponding path program 16 times [2024-06-21 15:51:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:31,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204463209] [2024-06-21 15:51:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:31,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204463209] [2024-06-21 15:51:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204463209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:34,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159841182] [2024-06-21 15:51:34,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:34,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:34,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:34,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 277 transitions, 2384 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:34,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:34,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:34,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:35,367 INFO L124 PetriNetUnfolderBase]: 896/1660 cut-off events. [2024-06-21 15:51:35,367 INFO L125 PetriNetUnfolderBase]: For 192012/192012 co-relation queries the response was YES. [2024-06-21 15:51:35,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9125 conditions, 1660 events. 896/1660 cut-off events. For 192012/192012 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9569 event pairs, 191 based on Foata normal form. 2/1661 useless extension candidates. Maximal degree in co-relation 8967. Up to 1471 conditions per place. [2024-06-21 15:51:35,385 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 249 selfloop transitions, 47 changer transitions 0/298 dead transitions. [2024-06-21 15:51:35,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 298 transitions, 3068 flow [2024-06-21 15:51:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:51:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:51:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 15:51:35,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 15:51:35,387 INFO L175 Difference]: Start difference. First operand has 362 places, 277 transitions, 2384 flow. Second operand 11 states and 117 transitions. [2024-06-21 15:51:35,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 298 transitions, 3068 flow [2024-06-21 15:51:36,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 298 transitions, 2916 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 15:51:36,065 INFO L231 Difference]: Finished difference. Result has 356 places, 278 transitions, 2380 flow [2024-06-21 15:51:36,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2380, PETRI_PLACES=356, PETRI_TRANSITIONS=278} [2024-06-21 15:51:36,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-21 15:51:36,066 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 278 transitions, 2380 flow [2024-06-21 15:51:36,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:36,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:36,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:36,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 15:51:36,066 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)] === [2024-06-21 15:51:36,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:36,067 INFO L85 PathProgramCache]: Analyzing trace with hash -55725663, now seen corresponding path program 17 times [2024-06-21 15:51:36,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:36,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138996278] [2024-06-21 15:51:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:36,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:39,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138996278] [2024-06-21 15:51:39,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138996278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:39,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:39,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569059823] [2024-06-21 15:51:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:39,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:39,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:39,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:39,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 278 transitions, 2380 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:39,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:39,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:39,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:40,326 INFO L124 PetriNetUnfolderBase]: 900/1668 cut-off events. [2024-06-21 15:51:40,326 INFO L125 PetriNetUnfolderBase]: For 187228/187228 co-relation queries the response was YES. [2024-06-21 15:51:40,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 1668 events. 900/1668 cut-off events. For 187228/187228 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9636 event pairs, 189 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 8967. Up to 1479 conditions per place. [2024-06-21 15:51:40,349 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 251 selfloop transitions, 46 changer transitions 0/299 dead transitions. [2024-06-21 15:51:40,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 299 transitions, 3068 flow [2024-06-21 15:51:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:51:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:51:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:51:40,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-21 15:51:40,350 INFO L175 Difference]: Start difference. First operand has 356 places, 278 transitions, 2380 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:51:40,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 299 transitions, 3068 flow [2024-06-21 15:51:41,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 299 transitions, 2932 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 15:51:41,082 INFO L231 Difference]: Finished difference. Result has 357 places, 279 transitions, 2392 flow [2024-06-21 15:51:41,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2392, PETRI_PLACES=357, PETRI_TRANSITIONS=279} [2024-06-21 15:51:41,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-21 15:51:41,083 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 279 transitions, 2392 flow [2024-06-21 15:51:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:41,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:41,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:41,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 15:51:41,084 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)] === [2024-06-21 15:51:41,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash -55869813, now seen corresponding path program 18 times [2024-06-21 15:51:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:41,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304865371] [2024-06-21 15:51:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:41,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:43,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:43,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304865371] [2024-06-21 15:51:43,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304865371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:43,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:43,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575295615] [2024-06-21 15:51:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:43,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:43,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:43,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 279 transitions, 2392 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:43,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:43,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:43,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:44,522 INFO L124 PetriNetUnfolderBase]: 904/1676 cut-off events. [2024-06-21 15:51:44,522 INFO L125 PetriNetUnfolderBase]: For 187440/187440 co-relation queries the response was YES. [2024-06-21 15:51:44,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9165 conditions, 1676 events. 904/1676 cut-off events. For 187440/187440 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9702 event pairs, 187 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 9009. Up to 1487 conditions per place. [2024-06-21 15:51:44,538 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 44 changer transitions 0/300 dead transitions. [2024-06-21 15:51:44,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 300 transitions, 3084 flow [2024-06-21 15:51:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:51:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:51:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 15:51:44,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 15:51:44,539 INFO L175 Difference]: Start difference. First operand has 357 places, 279 transitions, 2392 flow. Second operand 11 states and 115 transitions. [2024-06-21 15:51:44,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 300 transitions, 3084 flow [2024-06-21 15:51:45,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 300 transitions, 2946 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 15:51:45,224 INFO L231 Difference]: Finished difference. Result has 359 places, 280 transitions, 2400 flow [2024-06-21 15:51:45,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2400, PETRI_PLACES=359, PETRI_TRANSITIONS=280} [2024-06-21 15:51:45,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 15:51:45,224 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 280 transitions, 2400 flow [2024-06-21 15:51:45,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:45,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:45,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:45,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 15:51:45,225 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)] === [2024-06-21 15:51:45,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash -59444733, now seen corresponding path program 19 times [2024-06-21 15:51:45,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:45,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108187427] [2024-06-21 15:51:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:45,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:47,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108187427] [2024-06-21 15:51:47,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108187427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:47,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:47,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185003653] [2024-06-21 15:51:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:48,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:48,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:48,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:48,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:48,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:48,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 280 transitions, 2400 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:48,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:48,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:48,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:48,885 INFO L124 PetriNetUnfolderBase]: 908/1684 cut-off events. [2024-06-21 15:51:48,885 INFO L125 PetriNetUnfolderBase]: For 187574/187574 co-relation queries the response was YES. [2024-06-21 15:51:48,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9198 conditions, 1684 events. 908/1684 cut-off events. For 187574/187574 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9780 event pairs, 183 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 9041. Up to 1495 conditions per place. [2024-06-21 15:51:48,904 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 42 changer transitions 0/301 dead transitions. [2024-06-21 15:51:48,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 301 transitions, 3094 flow [2024-06-21 15:51:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:51:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:51:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:51:48,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 15:51:48,906 INFO L175 Difference]: Start difference. First operand has 359 places, 280 transitions, 2400 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:51:48,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 301 transitions, 3094 flow [2024-06-21 15:51:49,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 301 transitions, 2960 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 15:51:49,659 INFO L231 Difference]: Finished difference. Result has 361 places, 281 transitions, 2408 flow [2024-06-21 15:51:49,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2408, PETRI_PLACES=361, PETRI_TRANSITIONS=281} [2024-06-21 15:51:49,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-21 15:51:49,659 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 281 transitions, 2408 flow [2024-06-21 15:51:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:49,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 15:51:49,660 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)] === [2024-06-21 15:51:49,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash 88380193, now seen corresponding path program 10 times [2024-06-21 15:51:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:49,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724502528] [2024-06-21 15:51:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:53,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724502528] [2024-06-21 15:51:53,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724502528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:53,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:53,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:51:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275340041] [2024-06-21 15:51:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:51:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:51:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:51:53,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:53,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 281 transitions, 2408 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:53,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:53,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:53,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:54,260 INFO L124 PetriNetUnfolderBase]: 895/1661 cut-off events. [2024-06-21 15:51:54,260 INFO L125 PetriNetUnfolderBase]: For 171214/171214 co-relation queries the response was YES. [2024-06-21 15:51:54,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7801 conditions, 1661 events. 895/1661 cut-off events. For 171214/171214 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9642 event pairs, 186 based on Foata normal form. 10/1670 useless extension candidates. Maximal degree in co-relation 7643. Up to 1434 conditions per place. [2024-06-21 15:51:54,274 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 44 changer transitions 11/307 dead transitions. [2024-06-21 15:51:54,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 307 transitions, 3108 flow [2024-06-21 15:51:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 15:51:54,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-21 15:51:54,276 INFO L175 Difference]: Start difference. First operand has 361 places, 281 transitions, 2408 flow. Second operand 12 states and 129 transitions. [2024-06-21 15:51:54,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 307 transitions, 3108 flow [2024-06-21 15:51:54,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 307 transitions, 2980 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 15:51:54,776 INFO L231 Difference]: Finished difference. Result has 364 places, 278 transitions, 2349 flow [2024-06-21 15:51:54,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2349, PETRI_PLACES=364, PETRI_TRANSITIONS=278} [2024-06-21 15:51:54,776 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 15:51:54,776 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 278 transitions, 2349 flow [2024-06-21 15:51:54,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:51:54,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:51:54,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:51:54,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 15:51:54,777 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)] === [2024-06-21 15:51:54,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:51:54,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1098076325, now seen corresponding path program 11 times [2024-06-21 15:51:54,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:51:54,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36743524] [2024-06-21 15:51:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:51:54,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:51:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:51:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:51:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:51:58,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36743524] [2024-06-21 15:51:58,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36743524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:51:58,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:51:58,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:51:58,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425145688] [2024-06-21 15:51:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:51:58,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:51:58,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:51:58,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:51:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:51:58,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:51:58,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 278 transitions, 2349 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) [2024-06-21 15:51:58,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:51:58,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:51:58,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:51:59,669 INFO L124 PetriNetUnfolderBase]: 910/1698 cut-off events. [2024-06-21 15:51:59,669 INFO L125 PetriNetUnfolderBase]: For 230136/230136 co-relation queries the response was YES. [2024-06-21 15:51:59,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 1698 events. 910/1698 cut-off events. For 230136/230136 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9853 event pairs, 123 based on Foata normal form. 8/1702 useless extension candidates. Maximal degree in co-relation 8907. Up to 851 conditions per place. [2024-06-21 15:51:59,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 154 changer transitions 8/313 dead transitions. [2024-06-21 15:51:59,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 313 transitions, 3357 flow [2024-06-21 15:51:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:51:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:51:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 15:51:59,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 15:51:59,690 INFO L175 Difference]: Start difference. First operand has 364 places, 278 transitions, 2349 flow. Second operand 12 states and 147 transitions. [2024-06-21 15:51:59,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 313 transitions, 3357 flow [2024-06-21 15:52:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 313 transitions, 3261 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:52:00,367 INFO L231 Difference]: Finished difference. Result has 361 places, 276 transitions, 2551 flow [2024-06-21 15:52:00,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2551, PETRI_PLACES=361, PETRI_TRANSITIONS=276} [2024-06-21 15:52:00,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-21 15:52:00,367 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 276 transitions, 2551 flow [2024-06-21 15:52:00,368 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) [2024-06-21 15:52:00,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:00,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 15:52:00,368 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)] === [2024-06-21 15:52:00,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2139773201, now seen corresponding path program 12 times [2024-06-21 15:52:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106743559] [2024-06-21 15:52:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:03,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106743559] [2024-06-21 15:52:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106743559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:03,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:03,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:52:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151319972] [2024-06-21 15:52:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:03,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:52:03,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:52:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:52:03,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:03,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 276 transitions, 2551 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) [2024-06-21 15:52:03,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:03,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:03,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:04,715 INFO L124 PetriNetUnfolderBase]: 877/1635 cut-off events. [2024-06-21 15:52:04,715 INFO L125 PetriNetUnfolderBase]: For 183824/183824 co-relation queries the response was YES. [2024-06-21 15:52:04,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8010 conditions, 1635 events. 877/1635 cut-off events. For 183824/183824 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9458 event pairs, 120 based on Foata normal form. 12/1643 useless extension candidates. Maximal degree in co-relation 7852. Up to 853 conditions per place. [2024-06-21 15:52:04,730 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 141 changer transitions 8/303 dead transitions. [2024-06-21 15:52:04,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 303 transitions, 3297 flow [2024-06-21 15:52:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 15:52:04,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 15:52:04,731 INFO L175 Difference]: Start difference. First operand has 361 places, 276 transitions, 2551 flow. Second operand 11 states and 132 transitions. [2024-06-21 15:52:04,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 303 transitions, 3297 flow [2024-06-21 15:52:05,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 303 transitions, 2985 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 15:52:05,244 INFO L231 Difference]: Finished difference. Result has 359 places, 273 transitions, 2545 flow [2024-06-21 15:52:05,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2545, PETRI_PLACES=359, PETRI_TRANSITIONS=273} [2024-06-21 15:52:05,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 15:52:05,245 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 273 transitions, 2545 flow [2024-06-21 15:52:05,245 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) [2024-06-21 15:52:05,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:05,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:05,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 15:52:05,246 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)] === [2024-06-21 15:52:05,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1081808609, now seen corresponding path program 13 times [2024-06-21 15:52:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932688576] [2024-06-21 15:52:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:08,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:08,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932688576] [2024-06-21 15:52:08,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932688576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:08,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:08,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:52:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820855463] [2024-06-21 15:52:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:08,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:52:08,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:52:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:52:08,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:08,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 273 transitions, 2545 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:52:08,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:08,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:08,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:09,582 INFO L124 PetriNetUnfolderBase]: 905/1691 cut-off events. [2024-06-21 15:52:09,582 INFO L125 PetriNetUnfolderBase]: For 244124/244124 co-relation queries the response was YES. [2024-06-21 15:52:09,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9754 conditions, 1691 events. 905/1691 cut-off events. For 244124/244124 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9803 event pairs, 172 based on Foata normal form. 8/1695 useless extension candidates. Maximal degree in co-relation 9598. Up to 1259 conditions per place. [2024-06-21 15:52:09,599 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 65 changer transitions 8/311 dead transitions. [2024-06-21 15:52:09,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 311 transitions, 3613 flow [2024-06-21 15:52:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:52:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:52:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 15:52:09,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 15:52:09,601 INFO L175 Difference]: Start difference. First operand has 359 places, 273 transitions, 2545 flow. Second operand 12 states and 144 transitions. [2024-06-21 15:52:09,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 311 transitions, 3613 flow [2024-06-21 15:52:10,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 311 transitions, 3280 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-21 15:52:10,476 INFO L231 Difference]: Finished difference. Result has 360 places, 274 transitions, 2434 flow [2024-06-21 15:52:10,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2434, PETRI_PLACES=360, PETRI_TRANSITIONS=274} [2024-06-21 15:52:10,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-21 15:52:10,477 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 274 transitions, 2434 flow [2024-06-21 15:52:10,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:52:10,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:10,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:10,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 15:52:10,477 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)] === [2024-06-21 15:52:10,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1999059359, now seen corresponding path program 20 times [2024-06-21 15:52:10,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:10,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716716495] [2024-06-21 15:52:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:10,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:14,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:14,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716716495] [2024-06-21 15:52:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716716495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:14,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:14,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:52:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216196452] [2024-06-21 15:52:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:14,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:52:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:52:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:52:14,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:14,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 274 transitions, 2434 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:52:14,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:14,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:14,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:15,176 INFO L124 PetriNetUnfolderBase]: 885/1651 cut-off events. [2024-06-21 15:52:15,176 INFO L125 PetriNetUnfolderBase]: For 203453/203453 co-relation queries the response was YES. [2024-06-21 15:52:15,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9477 conditions, 1651 events. 885/1651 cut-off events. For 203453/203453 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9546 event pairs, 144 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 9318. Up to 1207 conditions per place. [2024-06-21 15:52:15,196 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 99 changer transitions 0/298 dead transitions. [2024-06-21 15:52:15,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 298 transitions, 3136 flow [2024-06-21 15:52:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 15:52:15,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-21 15:52:15,197 INFO L175 Difference]: Start difference. First operand has 360 places, 274 transitions, 2434 flow. Second operand 11 states and 127 transitions. [2024-06-21 15:52:15,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 298 transitions, 3136 flow [2024-06-21 15:52:15,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 298 transitions, 3030 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 15:52:15,913 INFO L231 Difference]: Finished difference. Result has 359 places, 275 transitions, 2584 flow [2024-06-21 15:52:15,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2584, PETRI_PLACES=359, PETRI_TRANSITIONS=275} [2024-06-21 15:52:15,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 15:52:15,914 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 275 transitions, 2584 flow [2024-06-21 15:52:15,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:52:15,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:15,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:15,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 15:52:15,914 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)] === [2024-06-21 15:52:15,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1081799309, now seen corresponding path program 14 times [2024-06-21 15:52:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:15,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500100030] [2024-06-21 15:52:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:15,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500100030] [2024-06-21 15:52:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500100030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:19,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:52:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16033604] [2024-06-21 15:52:19,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:19,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:52:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:52:19,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:52:19,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:19,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 275 transitions, 2584 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) [2024-06-21 15:52:19,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:19,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:19,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:20,094 INFO L124 PetriNetUnfolderBase]: 917/1723 cut-off events. [2024-06-21 15:52:20,095 INFO L125 PetriNetUnfolderBase]: For 333970/333970 co-relation queries the response was YES. [2024-06-21 15:52:20,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9882 conditions, 1723 events. 917/1723 cut-off events. For 333970/333970 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10026 event pairs, 140 based on Foata normal form. 20/1739 useless extension candidates. Maximal degree in co-relation 9724. Up to 947 conditions per place. [2024-06-21 15:52:20,115 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 140 changer transitions 16/302 dead transitions. [2024-06-21 15:52:20,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 302 transitions, 3282 flow [2024-06-21 15:52:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 15:52:20,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-21 15:52:20,117 INFO L175 Difference]: Start difference. First operand has 359 places, 275 transitions, 2584 flow. Second operand 11 states and 131 transitions. [2024-06-21 15:52:20,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 302 transitions, 3282 flow [2024-06-21 15:52:21,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 302 transitions, 3036 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 15:52:21,060 INFO L231 Difference]: Finished difference. Result has 361 places, 267 transitions, 2558 flow [2024-06-21 15:52:21,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2558, PETRI_PLACES=361, PETRI_TRANSITIONS=267} [2024-06-21 15:52:21,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-21 15:52:21,061 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 267 transitions, 2558 flow [2024-06-21 15:52:21,061 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) [2024-06-21 15:52:21,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:21,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:21,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 15:52:21,062 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)] === [2024-06-21 15:52:21,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1998782653, now seen corresponding path program 15 times [2024-06-21 15:52:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:21,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922550926] [2024-06-21 15:52:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:21,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922550926] [2024-06-21 15:52:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922550926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:24,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:24,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 15:52:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876907207] [2024-06-21 15:52:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:24,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 15:52:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:24,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 15:52:24,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-21 15:52:24,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:24,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 267 transitions, 2558 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) [2024-06-21 15:52:24,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:24,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:24,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:25,623 INFO L124 PetriNetUnfolderBase]: 904/1704 cut-off events. [2024-06-21 15:52:25,623 INFO L125 PetriNetUnfolderBase]: For 322463/322463 co-relation queries the response was YES. [2024-06-21 15:52:25,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11057 conditions, 1704 events. 904/1704 cut-off events. For 322463/322463 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9841 event pairs, 137 based on Foata normal form. 8/1708 useless extension candidates. Maximal degree in co-relation 10898. Up to 788 conditions per place. [2024-06-21 15:52:25,643 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 137 changer transitions 13/299 dead transitions. [2024-06-21 15:52:25,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 299 transitions, 3530 flow [2024-06-21 15:52:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 15:52:25,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 15:52:25,644 INFO L175 Difference]: Start difference. First operand has 361 places, 267 transitions, 2558 flow. Second operand 11 states and 134 transitions. [2024-06-21 15:52:25,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 299 transitions, 3530 flow [2024-06-21 15:52:26,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 299 transitions, 3210 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-21 15:52:26,618 INFO L231 Difference]: Finished difference. Result has 355 places, 261 transitions, 2485 flow [2024-06-21 15:52:26,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2485, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2024-06-21 15:52:26,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-21 15:52:26,619 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2485 flow [2024-06-21 15:52:26,619 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) [2024-06-21 15:52:26,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:26,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:26,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 15:52:26,619 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)] === [2024-06-21 15:52:26,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1081531903, now seen corresponding path program 21 times [2024-06-21 15:52:26,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:26,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397652098] [2024-06-21 15:52:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:26,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:29,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:29,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397652098] [2024-06-21 15:52:29,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397652098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:29,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:29,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:52:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031589221] [2024-06-21 15:52:29,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:29,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:52:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:29,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:52:29,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:52:29,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:29,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2485 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:52:29,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:29,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:29,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:30,491 INFO L124 PetriNetUnfolderBase]: 864/1628 cut-off events. [2024-06-21 15:52:30,491 INFO L125 PetriNetUnfolderBase]: For 270295/270295 co-relation queries the response was YES. [2024-06-21 15:52:30,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10752 conditions, 1628 events. 864/1628 cut-off events. For 270295/270295 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9371 event pairs, 187 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 10596. Up to 1388 conditions per place. [2024-06-21 15:52:30,508 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 55 changer transitions 0/285 dead transitions. [2024-06-21 15:52:30,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 285 transitions, 3159 flow [2024-06-21 15:52:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 15:52:30,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 15:52:30,509 INFO L175 Difference]: Start difference. First operand has 355 places, 261 transitions, 2485 flow. Second operand 11 states and 125 transitions. [2024-06-21 15:52:30,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 285 transitions, 3159 flow [2024-06-21 15:52:31,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 285 transitions, 2871 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-21 15:52:31,458 INFO L231 Difference]: Finished difference. Result has 347 places, 262 transitions, 2363 flow [2024-06-21 15:52:31,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=347, PETRI_TRANSITIONS=262} [2024-06-21 15:52:31,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 15:52:31,459 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 262 transitions, 2363 flow [2024-06-21 15:52:31,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:52:31,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:31,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:31,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 15:52:31,459 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)] === [2024-06-21 15:52:31,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1081539839, now seen corresponding path program 16 times [2024-06-21 15:52:31,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:31,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015629516] [2024-06-21 15:52:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:31,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015629516] [2024-06-21 15:52:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015629516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:52:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769408449] [2024-06-21 15:52:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:35,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:52:35,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:35,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:52:35,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:52:35,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:35,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 262 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) [2024-06-21 15:52:35,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:35,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:35,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:36,205 INFO L124 PetriNetUnfolderBase]: 851/1605 cut-off events. [2024-06-21 15:52:36,205 INFO L125 PetriNetUnfolderBase]: For 239735/239735 co-relation queries the response was YES. [2024-06-21 15:52:36,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9098 conditions, 1605 events. 851/1605 cut-off events. For 239735/239735 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9246 event pairs, 170 based on Foata normal form. 10/1611 useless extension candidates. Maximal degree in co-relation 8946. Up to 1321 conditions per place. [2024-06-21 15:52:36,223 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 53 changer transitions 11/291 dead transitions. [2024-06-21 15:52:36,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 291 transitions, 3037 flow [2024-06-21 15:52:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:52:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:52:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 15:52:36,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-21 15:52:36,224 INFO L175 Difference]: Start difference. First operand has 347 places, 262 transitions, 2363 flow. Second operand 12 states and 137 transitions. [2024-06-21 15:52:36,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 291 transitions, 3037 flow [2024-06-21 15:52:36,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 291 transitions, 2883 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 15:52:36,967 INFO L231 Difference]: Finished difference. Result has 350 places, 259 transitions, 2295 flow [2024-06-21 15:52:36,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2295, PETRI_PLACES=350, PETRI_TRANSITIONS=259} [2024-06-21 15:52:36,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-21 15:52:36,968 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 259 transitions, 2295 flow [2024-06-21 15:52:36,968 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) [2024-06-21 15:52:36,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:36,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:36,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 15:52:36,968 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)] === [2024-06-21 15:52:36,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1999051423, now seen corresponding path program 17 times [2024-06-21 15:52:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:36,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339300992] [2024-06-21 15:52:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:36,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:41,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:41,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339300992] [2024-06-21 15:52:41,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339300992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:41,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:41,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:52:41,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760638683] [2024-06-21 15:52:41,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:41,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:52:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:52:41,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:52:41,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:41,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 259 transitions, 2295 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) [2024-06-21 15:52:41,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:41,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:41,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:42,713 INFO L124 PetriNetUnfolderBase]: 841/1591 cut-off events. [2024-06-21 15:52:42,714 INFO L125 PetriNetUnfolderBase]: For 242386/242386 co-relation queries the response was YES. [2024-06-21 15:52:42,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 1591 events. 841/1591 cut-off events. For 242386/242386 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9182 event pairs, 134 based on Foata normal form. 10/1597 useless extension candidates. Maximal degree in co-relation 8812. Up to 1103 conditions per place. [2024-06-21 15:52:42,732 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 96 changer transitions 11/288 dead transitions. [2024-06-21 15:52:42,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 288 transitions, 2963 flow [2024-06-21 15:52:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:52:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:52:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 15:52:42,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 15:52:42,733 INFO L175 Difference]: Start difference. First operand has 350 places, 259 transitions, 2295 flow. Second operand 12 states and 139 transitions. [2024-06-21 15:52:42,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 288 transitions, 2963 flow [2024-06-21 15:52:43,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 288 transitions, 2853 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:52:43,329 INFO L231 Difference]: Finished difference. Result has 348 places, 256 transitions, 2360 flow [2024-06-21 15:52:43,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2360, PETRI_PLACES=348, PETRI_TRANSITIONS=256} [2024-06-21 15:52:43,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 15:52:43,330 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 256 transitions, 2360 flow [2024-06-21 15:52:43,330 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) [2024-06-21 15:52:43,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:43,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:43,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 15:52:43,331 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)] === [2024-06-21 15:52:43,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:43,331 INFO L85 PathProgramCache]: Analyzing trace with hash 803166357, now seen corresponding path program 22 times [2024-06-21 15:52:43,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:43,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820606057] [2024-06-21 15:52:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:43,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:46,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820606057] [2024-06-21 15:52:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820606057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:46,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:46,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:52:46,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650012213] [2024-06-21 15:52:46,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:46,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:52:46,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:52:46,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:52:46,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:46,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 256 transitions, 2360 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) [2024-06-21 15:52:46,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:46,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:46,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:47,704 INFO L124 PetriNetUnfolderBase]: 819/1549 cut-off events. [2024-06-21 15:52:47,705 INFO L125 PetriNetUnfolderBase]: For 185539/185539 co-relation queries the response was YES. [2024-06-21 15:52:47,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9004 conditions, 1549 events. 819/1549 cut-off events. For 185539/185539 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8920 event pairs, 166 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 8852. Up to 1339 conditions per place. [2024-06-21 15:52:47,724 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 49 changer transitions 0/279 dead transitions. [2024-06-21 15:52:47,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 279 transitions, 3020 flow [2024-06-21 15:52:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 15:52:47,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 15:52:47,726 INFO L175 Difference]: Start difference. First operand has 348 places, 256 transitions, 2360 flow. Second operand 11 states and 123 transitions. [2024-06-21 15:52:47,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 279 transitions, 3020 flow [2024-06-21 15:52:48,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 279 transitions, 2824 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:52:48,319 INFO L231 Difference]: Finished difference. Result has 345 places, 257 transitions, 2320 flow [2024-06-21 15:52:48,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2320, PETRI_PLACES=345, PETRI_TRANSITIONS=257} [2024-06-21 15:52:48,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-21 15:52:48,320 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 257 transitions, 2320 flow [2024-06-21 15:52:48,320 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) [2024-06-21 15:52:48,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:48,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:48,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 15:52:48,320 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)] === [2024-06-21 15:52:48,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2006411009, now seen corresponding path program 23 times [2024-06-21 15:52:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785256054] [2024-06-21 15:52:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:51,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:51,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785256054] [2024-06-21 15:52:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785256054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:51,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:51,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:52:51,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272094876] [2024-06-21 15:52:51,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:51,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:52:51,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:51,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:52:51,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:52:52,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:52,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 257 transitions, 2320 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) [2024-06-21 15:52:52,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:52,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:52,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:52,965 INFO L124 PetriNetUnfolderBase]: 839/1593 cut-off events. [2024-06-21 15:52:52,966 INFO L125 PetriNetUnfolderBase]: For 250775/250775 co-relation queries the response was YES. [2024-06-21 15:52:52,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9097 conditions, 1593 events. 839/1593 cut-off events. For 250775/250775 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9222 event pairs, 140 based on Foata normal form. 12/1601 useless extension candidates. Maximal degree in co-relation 8946. Up to 1109 conditions per place. [2024-06-21 15:52:52,979 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 92 changer transitions 14/283 dead transitions. [2024-06-21 15:52:52,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 283 transitions, 3022 flow [2024-06-21 15:52:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 15:52:52,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 15:52:52,980 INFO L175 Difference]: Start difference. First operand has 345 places, 257 transitions, 2320 flow. Second operand 11 states and 128 transitions. [2024-06-21 15:52:52,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 283 transitions, 3022 flow [2024-06-21 15:52:53,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 283 transitions, 2878 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 15:52:53,774 INFO L231 Difference]: Finished difference. Result has 347 places, 252 transitions, 2333 flow [2024-06-21 15:52:53,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2333, PETRI_PLACES=347, PETRI_TRANSITIONS=252} [2024-06-21 15:52:53,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 15:52:53,775 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 252 transitions, 2333 flow [2024-06-21 15:52:53,775 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) [2024-06-21 15:52:53,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:53,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 15:52:53,776 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)] === [2024-06-21 15:52:53,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -949289519, now seen corresponding path program 24 times [2024-06-21 15:52:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326393244] [2024-06-21 15:52:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:52:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:52:56,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:52:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326393244] [2024-06-21 15:52:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326393244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:52:56,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:52:56,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:52:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53909988] [2024-06-21 15:52:56,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:52:56,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:52:56,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:52:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:52:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:52:57,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:52:57,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 252 transitions, 2333 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) [2024-06-21 15:52:57,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:52:57,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:52:57,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:52:57,845 INFO L124 PetriNetUnfolderBase]: 807/1533 cut-off events. [2024-06-21 15:52:57,845 INFO L125 PetriNetUnfolderBase]: For 185415/185415 co-relation queries the response was YES. [2024-06-21 15:52:57,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8942 conditions, 1533 events. 807/1533 cut-off events. For 185415/185415 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8835 event pairs, 136 based on Foata normal form. 2/1531 useless extension candidates. Maximal degree in co-relation 8790. Up to 1103 conditions per place. [2024-06-21 15:52:57,862 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 94 changer transitions 0/274 dead transitions. [2024-06-21 15:52:57,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 274 transitions, 2983 flow [2024-06-21 15:52:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:52:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:52:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:52:57,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:52:57,864 INFO L175 Difference]: Start difference. First operand has 347 places, 252 transitions, 2333 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:52:57,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 274 transitions, 2983 flow [2024-06-21 15:52:58,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 274 transitions, 2793 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 15:52:58,537 INFO L231 Difference]: Finished difference. Result has 343 places, 253 transitions, 2391 flow [2024-06-21 15:52:58,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2391, PETRI_PLACES=343, PETRI_TRANSITIONS=253} [2024-06-21 15:52:58,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 15:52:58,538 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 253 transitions, 2391 flow [2024-06-21 15:52:58,538 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) [2024-06-21 15:52:58,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:52:58,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:52:58,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 15:52:58,538 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)] === [2024-06-21 15:52:58,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:52:58,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1074174673, now seen corresponding path program 25 times [2024-06-21 15:52:58,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:52:58,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662398031] [2024-06-21 15:52:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:52:58,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:52:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662398031] [2024-06-21 15:53:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662398031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:02,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:02,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73724770] [2024-06-21 15:53:02,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:02,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:02,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 253 transitions, 2391 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) [2024-06-21 15:53:02,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:02,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:02,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:03,248 INFO L124 PetriNetUnfolderBase]: 811/1541 cut-off events. [2024-06-21 15:53:03,249 INFO L125 PetriNetUnfolderBase]: For 181061/181061 co-relation queries the response was YES. [2024-06-21 15:53:03,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9034 conditions, 1541 events. 811/1541 cut-off events. For 181061/181061 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8910 event pairs, 164 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 8884. Up to 1317 conditions per place. [2024-06-21 15:53:03,262 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 51 changer transitions 0/278 dead transitions. [2024-06-21 15:53:03,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 278 transitions, 3057 flow [2024-06-21 15:53:03,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:53:03,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:53:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 15:53:03,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:53:03,264 INFO L175 Difference]: Start difference. First operand has 343 places, 253 transitions, 2391 flow. Second operand 12 states and 132 transitions. [2024-06-21 15:53:03,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 278 transitions, 3057 flow [2024-06-21 15:53:03,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 278 transitions, 2819 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 15:53:03,989 INFO L231 Difference]: Finished difference. Result has 346 places, 254 transitions, 2317 flow [2024-06-21 15:53:03,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2317, PETRI_PLACES=346, PETRI_TRANSITIONS=254} [2024-06-21 15:53:03,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 15:53:03,990 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 254 transitions, 2317 flow [2024-06-21 15:53:03,990 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) [2024-06-21 15:53:03,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:03,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:03,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 15:53:03,990 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)] === [2024-06-21 15:53:03,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:03,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1768548821, now seen corresponding path program 18 times [2024-06-21 15:53:03,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:03,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628901939] [2024-06-21 15:53:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:03,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:07,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628901939] [2024-06-21 15:53:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628901939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:07,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:07,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836081303] [2024-06-21 15:53:07,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:07,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:07,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:07,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:07,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 254 transitions, 2317 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) [2024-06-21 15:53:07,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:07,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:07,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:07,999 INFO L124 PetriNetUnfolderBase]: 852/1628 cut-off events. [2024-06-21 15:53:08,000 INFO L125 PetriNetUnfolderBase]: For 289525/289525 co-relation queries the response was YES. [2024-06-21 15:53:08,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10307 conditions, 1628 events. 852/1628 cut-off events. For 289525/289525 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9486 event pairs, 345 based on Foata normal form. 8/1635 useless extension candidates. Maximal degree in co-relation 10156. Up to 1413 conditions per place. [2024-06-21 15:53:08,018 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 249 selfloop transitions, 19 changer transitions 12/282 dead transitions. [2024-06-21 15:53:08,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 282 transitions, 3223 flow [2024-06-21 15:53:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:53:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:53:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 15:53:08,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-21 15:53:08,019 INFO L175 Difference]: Start difference. First operand has 346 places, 254 transitions, 2317 flow. Second operand 12 states and 129 transitions. [2024-06-21 15:53:08,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 282 transitions, 3223 flow [2024-06-21 15:53:08,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 282 transitions, 3069 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-21 15:53:08,892 INFO L231 Difference]: Finished difference. Result has 348 places, 250 transitions, 2174 flow [2024-06-21 15:53:08,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2174, PETRI_PLACES=348, PETRI_TRANSITIONS=250} [2024-06-21 15:53:08,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 15:53:08,893 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 250 transitions, 2174 flow [2024-06-21 15:53:08,893 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) [2024-06-21 15:53:08,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:08,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:08,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 15:53:08,894 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)] === [2024-06-21 15:53:08,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1469249433, now seen corresponding path program 26 times [2024-06-21 15:53:08,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502140473] [2024-06-21 15:53:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:08,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:12,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502140473] [2024-06-21 15:53:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502140473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:12,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:12,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:12,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234901102] [2024-06-21 15:53:12,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:12,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:12,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:12,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:12,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 250 transitions, 2174 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) [2024-06-21 15:53:12,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:12,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:12,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:13,287 INFO L124 PetriNetUnfolderBase]: 829/1579 cut-off events. [2024-06-21 15:53:13,287 INFO L125 PetriNetUnfolderBase]: For 253685/253685 co-relation queries the response was YES. [2024-06-21 15:53:13,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10070 conditions, 1579 events. 829/1579 cut-off events. For 253685/253685 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9112 event pairs, 185 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 9918. Up to 1391 conditions per place. [2024-06-21 15:53:13,305 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 44 changer transitions 0/272 dead transitions. [2024-06-21 15:53:13,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 272 transitions, 2818 flow [2024-06-21 15:53:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:53:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:53:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 15:53:13,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 15:53:13,307 INFO L175 Difference]: Start difference. First operand has 348 places, 250 transitions, 2174 flow. Second operand 11 states and 121 transitions. [2024-06-21 15:53:13,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 272 transitions, 2818 flow [2024-06-21 15:53:14,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 272 transitions, 2778 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 15:53:14,262 INFO L231 Difference]: Finished difference. Result has 344 places, 251 transitions, 2282 flow [2024-06-21 15:53:14,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2282, PETRI_PLACES=344, PETRI_TRANSITIONS=251} [2024-06-21 15:53:14,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 15:53:14,263 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 251 transitions, 2282 flow [2024-06-21 15:53:14,263 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) [2024-06-21 15:53:14,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:14,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 15:53:14,263 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)] === [2024-06-21 15:53:14,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2131517069, now seen corresponding path program 19 times [2024-06-21 15:53:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065545491] [2024-06-21 15:53:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:17,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:17,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065545491] [2024-06-21 15:53:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065545491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:17,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:17,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964991487] [2024-06-21 15:53:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:17,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:17,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:17,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:18,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:18,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 251 transitions, 2282 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) [2024-06-21 15:53:18,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:18,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:18,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:19,112 INFO L124 PetriNetUnfolderBase]: 845/1615 cut-off events. [2024-06-21 15:53:19,112 INFO L125 PetriNetUnfolderBase]: For 308373/308373 co-relation queries the response was YES. [2024-06-21 15:53:19,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 1615 events. 845/1615 cut-off events. For 308373/308373 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9378 event pairs, 187 based on Foata normal form. 10/1621 useless extension candidates. Maximal degree in co-relation 10140. Up to 1361 conditions per place. [2024-06-21 15:53:19,127 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 47 changer transitions 11/279 dead transitions. [2024-06-21 15:53:19,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 279 transitions, 2928 flow [2024-06-21 15:53:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:53:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:53:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 15:53:19,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 15:53:19,129 INFO L175 Difference]: Start difference. First operand has 344 places, 251 transitions, 2282 flow. Second operand 12 states and 135 transitions. [2024-06-21 15:53:19,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 279 transitions, 2928 flow [2024-06-21 15:53:20,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 279 transitions, 2792 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 15:53:20,005 INFO L231 Difference]: Finished difference. Result has 347 places, 248 transitions, 2220 flow [2024-06-21 15:53:20,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2220, PETRI_PLACES=347, PETRI_TRANSITIONS=248} [2024-06-21 15:53:20,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 15:53:20,006 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 248 transitions, 2220 flow [2024-06-21 15:53:20,006 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) [2024-06-21 15:53:20,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:20,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:20,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 15:53:20,006 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)] === [2024-06-21 15:53:20,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 603858987, now seen corresponding path program 27 times [2024-06-21 15:53:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:20,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790441601] [2024-06-21 15:53:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:20,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:22,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790441601] [2024-06-21 15:53:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790441601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:22,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893561306] [2024-06-21 15:53:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:22,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:23,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:23,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 248 transitions, 2220 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) [2024-06-21 15:53:23,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:23,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:23,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:23,759 INFO L124 PetriNetUnfolderBase]: 823/1573 cut-off events. [2024-06-21 15:53:23,759 INFO L125 PetriNetUnfolderBase]: For 258507/258507 co-relation queries the response was YES. [2024-06-21 15:53:23,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10181 conditions, 1573 events. 823/1573 cut-off events. For 258507/258507 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9101 event pairs, 183 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 10028. Up to 1385 conditions per place. [2024-06-21 15:53:23,777 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 43 changer transitions 0/270 dead transitions. [2024-06-21 15:53:23,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 270 transitions, 2864 flow [2024-06-21 15:53:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:53:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:53:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 15:53:23,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-21 15:53:23,778 INFO L175 Difference]: Start difference. First operand has 347 places, 248 transitions, 2220 flow. Second operand 11 states and 120 transitions. [2024-06-21 15:53:23,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 270 transitions, 2864 flow [2024-06-21 15:53:24,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 270 transitions, 2766 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:53:24,608 INFO L231 Difference]: Finished difference. Result has 344 places, 249 transitions, 2272 flow [2024-06-21 15:53:24,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2272, PETRI_PLACES=344, PETRI_TRANSITIONS=249} [2024-06-21 15:53:24,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 15:53:24,609 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 249 transitions, 2272 flow [2024-06-21 15:53:24,609 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) [2024-06-21 15:53:24,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:24,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:24,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 15:53:24,609 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)] === [2024-06-21 15:53:24,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash -932182673, now seen corresponding path program 20 times [2024-06-21 15:53:24,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:24,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756702396] [2024-06-21 15:53:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:28,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:28,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756702396] [2024-06-21 15:53:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756702396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:28,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:28,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:53:28,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142061433] [2024-06-21 15:53:28,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:28,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:53:28,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:28,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:53:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:53:28,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:28,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 249 transitions, 2272 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:53:28,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:28,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:28,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:29,324 INFO L124 PetriNetUnfolderBase]: 850/1634 cut-off events. [2024-06-21 15:53:29,324 INFO L125 PetriNetUnfolderBase]: For 336732/336732 co-relation queries the response was YES. [2024-06-21 15:53:29,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 1634 events. 850/1634 cut-off events. For 336732/336732 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9525 event pairs, 348 based on Foata normal form. 8/1641 useless extension candidates. Maximal degree in co-relation 10882. Up to 1452 conditions per place. [2024-06-21 15:53:29,341 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 20 changer transitions 8/275 dead transitions. [2024-06-21 15:53:29,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 275 transitions, 3160 flow [2024-06-21 15:53:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:53:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:53:29,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 15:53:29,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-21 15:53:29,342 INFO L175 Difference]: Start difference. First operand has 344 places, 249 transitions, 2272 flow. Second operand 12 states and 125 transitions. [2024-06-21 15:53:29,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 275 transitions, 3160 flow [2024-06-21 15:53:30,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 275 transitions, 3020 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 15:53:30,474 INFO L231 Difference]: Finished difference. Result has 347 places, 247 transitions, 2160 flow [2024-06-21 15:53:30,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2160, PETRI_PLACES=347, PETRI_TRANSITIONS=247} [2024-06-21 15:53:30,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 15:53:30,475 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 247 transitions, 2160 flow [2024-06-21 15:53:30,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:53:30,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:30,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:30,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 15:53:30,475 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)] === [2024-06-21 15:53:30,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:30,476 INFO L85 PathProgramCache]: Analyzing trace with hash -129617319, now seen corresponding path program 28 times [2024-06-21 15:53:30,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:30,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687784668] [2024-06-21 15:53:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:30,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:33,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:33,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687784668] [2024-06-21 15:53:33,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687784668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:33,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:33,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:53:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879691467] [2024-06-21 15:53:33,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:33,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:53:33,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:53:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:53:33,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:33,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 247 transitions, 2160 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:53:33,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:33,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:33,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:34,579 INFO L124 PetriNetUnfolderBase]: 830/1594 cut-off events. [2024-06-21 15:53:34,579 INFO L125 PetriNetUnfolderBase]: For 301080/301080 co-relation queries the response was YES. [2024-06-21 15:53:34,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10857 conditions, 1594 events. 830/1594 cut-off events. For 301080/301080 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9239 event pairs, 166 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 10704. Up to 1277 conditions per place. [2024-06-21 15:53:34,596 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 73 changer transitions 0/271 dead transitions. [2024-06-21 15:53:34,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 271 transitions, 2816 flow [2024-06-21 15:53:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:53:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:53:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 15:53:34,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-21 15:53:34,597 INFO L175 Difference]: Start difference. First operand has 347 places, 247 transitions, 2160 flow. Second operand 11 states and 126 transitions. [2024-06-21 15:53:34,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 271 transitions, 2816 flow [2024-06-21 15:53:35,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 271 transitions, 2772 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 15:53:35,732 INFO L231 Difference]: Finished difference. Result has 344 places, 248 transitions, 2328 flow [2024-06-21 15:53:35,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2328, PETRI_PLACES=344, PETRI_TRANSITIONS=248} [2024-06-21 15:53:35,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 15:53:35,732 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 248 transitions, 2328 flow [2024-06-21 15:53:35,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:53:35,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:35,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:35,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 15:53:35,733 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)] === [2024-06-21 15:53:35,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash 124935097, now seen corresponding path program 21 times [2024-06-21 15:53:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:35,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942912395] [2024-06-21 15:53:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:35,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:39,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942912395] [2024-06-21 15:53:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942912395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:39,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:39,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:53:39,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530681647] [2024-06-21 15:53:39,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:39,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:53:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:53:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:53:40,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:40,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 248 transitions, 2328 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:53:40,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:40,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:40,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:40,939 INFO L124 PetriNetUnfolderBase]: 831/1597 cut-off events. [2024-06-21 15:53:40,939 INFO L125 PetriNetUnfolderBase]: For 309456/309456 co-relation queries the response was YES. [2024-06-21 15:53:40,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10322 conditions, 1597 events. 831/1597 cut-off events. For 309456/309456 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9320 event pairs, 345 based on Foata normal form. 10/1606 useless extension candidates. Maximal degree in co-relation 10170. Up to 1498 conditions per place. [2024-06-21 15:53:40,958 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 16 changer transitions 13/269 dead transitions. [2024-06-21 15:53:40,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 269 transitions, 2936 flow [2024-06-21 15:53:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:53:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:53:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-21 15:53:40,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-21 15:53:40,970 INFO L175 Difference]: Start difference. First operand has 344 places, 248 transitions, 2328 flow. Second operand 12 states and 120 transitions. [2024-06-21 15:53:40,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 269 transitions, 2936 flow [2024-06-21 15:53:41,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 269 transitions, 2734 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-21 15:53:41,824 INFO L231 Difference]: Finished difference. Result has 347 places, 244 transitions, 2131 flow [2024-06-21 15:53:41,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2131, PETRI_PLACES=347, PETRI_TRANSITIONS=244} [2024-06-21 15:53:41,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 15:53:41,825 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 244 transitions, 2131 flow [2024-06-21 15:53:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:53:41,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:41,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:41,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 15:53:41,826 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)] === [2024-06-21 15:53:41,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -136968969, now seen corresponding path program 29 times [2024-06-21 15:53:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576045657] [2024-06-21 15:53:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:45,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:45,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576045657] [2024-06-21 15:53:45,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576045657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:45,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:45,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:45,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835428548] [2024-06-21 15:53:45,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:45,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:45,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:45,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:45,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 244 transitions, 2131 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) [2024-06-21 15:53:45,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:45,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:45,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:46,132 INFO L124 PetriNetUnfolderBase]: 807/1549 cut-off events. [2024-06-21 15:53:46,132 INFO L125 PetriNetUnfolderBase]: For 258717/258717 co-relation queries the response was YES. [2024-06-21 15:53:46,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9993 conditions, 1549 events. 807/1549 cut-off events. For 258717/258717 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8951 event pairs, 155 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 9840. Up to 1254 conditions per place. [2024-06-21 15:53:46,150 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 69 changer transitions 0/267 dead transitions. [2024-06-21 15:53:46,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 267 transitions, 2777 flow [2024-06-21 15:53:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:53:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:53:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 15:53:46,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-21 15:53:46,152 INFO L175 Difference]: Start difference. First operand has 347 places, 244 transitions, 2131 flow. Second operand 11 states and 124 transitions. [2024-06-21 15:53:46,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 267 transitions, 2777 flow [2024-06-21 15:53:47,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 267 transitions, 2739 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 15:53:47,152 INFO L231 Difference]: Finished difference. Result has 342 places, 245 transitions, 2299 flow [2024-06-21 15:53:47,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2299, PETRI_PLACES=342, PETRI_TRANSITIONS=245} [2024-06-21 15:53:47,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-21 15:53:47,153 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 245 transitions, 2299 flow [2024-06-21 15:53:47,153 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) [2024-06-21 15:53:47,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:47,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 15:53:47,153 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)] === [2024-06-21 15:53:47,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1482868979, now seen corresponding path program 22 times [2024-06-21 15:53:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:47,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977638465] [2024-06-21 15:53:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977638465] [2024-06-21 15:53:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977638465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:52,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:52,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580102100] [2024-06-21 15:53:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:52,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:52,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:52,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:52,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 245 transitions, 2299 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) [2024-06-21 15:53:52,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:52,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:52,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:53,973 INFO L124 PetriNetUnfolderBase]: 823/1585 cut-off events. [2024-06-21 15:53:53,973 INFO L125 PetriNetUnfolderBase]: For 304151/304151 co-relation queries the response was YES. [2024-06-21 15:53:53,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 1585 events. 823/1585 cut-off events. For 304151/304151 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9232 event pairs, 157 based on Foata normal form. 10/1591 useless extension candidates. Maximal degree in co-relation 10072. Up to 1224 conditions per place. [2024-06-21 15:53:53,989 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 71 changer transitions 11/274 dead transitions. [2024-06-21 15:53:53,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 274 transitions, 2939 flow [2024-06-21 15:53:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:53:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:53:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 15:53:53,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 15:53:53,991 INFO L175 Difference]: Start difference. First operand has 342 places, 245 transitions, 2299 flow. Second operand 12 states and 138 transitions. [2024-06-21 15:53:53,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 274 transitions, 2939 flow [2024-06-21 15:53:54,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 274 transitions, 2743 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 15:53:54,894 INFO L231 Difference]: Finished difference. Result has 345 places, 242 transitions, 2229 flow [2024-06-21 15:53:54,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2229, PETRI_PLACES=345, PETRI_TRANSITIONS=242} [2024-06-21 15:53:54,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-21 15:53:54,895 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 242 transitions, 2229 flow [2024-06-21 15:53:54,895 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) [2024-06-21 15:53:54,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:53:54,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:53:54,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 15:53:54,895 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)] === [2024-06-21 15:53:54,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:53:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash 728625643, now seen corresponding path program 23 times [2024-06-21 15:53:54,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:53:54,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148203436] [2024-06-21 15:53:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:53:54,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:53:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:53:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:53:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:53:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148203436] [2024-06-21 15:53:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148203436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:53:58,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:53:58,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:53:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075303205] [2024-06-21 15:53:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:53:58,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:53:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:53:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:53:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:53:58,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:53:58,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 242 transitions, 2229 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) [2024-06-21 15:53:58,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:53:58,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:53:58,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:53:59,558 INFO L124 PetriNetUnfolderBase]: 813/1571 cut-off events. [2024-06-21 15:53:59,558 INFO L125 PetriNetUnfolderBase]: For 307413/307413 co-relation queries the response was YES. [2024-06-21 15:53:59,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10090 conditions, 1571 events. 813/1571 cut-off events. For 307413/307413 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9139 event pairs, 151 based on Foata normal form. 10/1577 useless extension candidates. Maximal degree in co-relation 9938. Up to 1232 conditions per place. [2024-06-21 15:53:59,576 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 67 changer transitions 11/270 dead transitions. [2024-06-21 15:53:59,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 270 transitions, 2857 flow [2024-06-21 15:53:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:53:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:53:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 15:53:59,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 15:53:59,578 INFO L175 Difference]: Start difference. First operand has 345 places, 242 transitions, 2229 flow. Second operand 12 states and 136 transitions. [2024-06-21 15:53:59,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 270 transitions, 2857 flow [2024-06-21 15:54:00,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 270 transitions, 2711 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:54:00,509 INFO L231 Difference]: Finished difference. Result has 343 places, 239 transitions, 2201 flow [2024-06-21 15:54:00,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2201, PETRI_PLACES=343, PETRI_TRANSITIONS=239} [2024-06-21 15:54:00,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 15:54:00,510 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 239 transitions, 2201 flow [2024-06-21 15:54:00,510 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) [2024-06-21 15:54:00,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:00,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:00,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 15:54:00,510 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)] === [2024-06-21 15:54:00,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash 603714837, now seen corresponding path program 30 times [2024-06-21 15:54:00,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:00,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388686540] [2024-06-21 15:54:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:00,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:04,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388686540] [2024-06-21 15:54:04,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388686540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:04,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:04,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:04,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453301155] [2024-06-21 15:54:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:04,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:04,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:04,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:04,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 239 transitions, 2201 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) [2024-06-21 15:54:04,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:04,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:04,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:05,118 INFO L124 PetriNetUnfolderBase]: 791/1529 cut-off events. [2024-06-21 15:54:05,118 INFO L125 PetriNetUnfolderBase]: For 250634/250634 co-relation queries the response was YES. [2024-06-21 15:54:05,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10005 conditions, 1529 events. 791/1529 cut-off events. For 250634/250634 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8886 event pairs, 177 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 9854. Up to 1341 conditions per place. [2024-06-21 15:54:05,131 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 42 changer transitions 0/261 dead transitions. [2024-06-21 15:54:05,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 261 transitions, 2833 flow [2024-06-21 15:54:05,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:54:05,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 15:54:05,133 INFO L175 Difference]: Start difference. First operand has 343 places, 239 transitions, 2201 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:54:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 261 transitions, 2833 flow [2024-06-21 15:54:05,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 261 transitions, 2695 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:54:05,910 INFO L231 Difference]: Finished difference. Result has 340 places, 240 transitions, 2217 flow [2024-06-21 15:54:05,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2217, PETRI_PLACES=340, PETRI_TRANSITIONS=240} [2024-06-21 15:54:05,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-21 15:54:05,911 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 240 transitions, 2217 flow [2024-06-21 15:54:05,911 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) [2024-06-21 15:54:05,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:05,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:05,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 15:54:05,911 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)] === [2024-06-21 15:54:05,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash 728410317, now seen corresponding path program 31 times [2024-06-21 15:54:05,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:05,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774858844] [2024-06-21 15:54:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:09,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:09,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:09,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774858844] [2024-06-21 15:54:09,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774858844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:09,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:09,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:09,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540679815] [2024-06-21 15:54:09,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:09,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:09,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:09,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:09,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:09,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:09,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 240 transitions, 2217 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) [2024-06-21 15:54:09,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:09,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:09,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:10,011 INFO L124 PetriNetUnfolderBase]: 795/1537 cut-off events. [2024-06-21 15:54:10,011 INFO L125 PetriNetUnfolderBase]: For 248683/248683 co-relation queries the response was YES. [2024-06-21 15:54:10,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 1537 events. 795/1537 cut-off events. For 248683/248683 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8938 event pairs, 147 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 9902. Up to 1242 conditions per place. [2024-06-21 15:54:10,030 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 68 changer transitions 0/263 dead transitions. [2024-06-21 15:54:10,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 263 transitions, 2859 flow [2024-06-21 15:54:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 15:54:10,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 15:54:10,031 INFO L175 Difference]: Start difference. First operand has 340 places, 240 transitions, 2217 flow. Second operand 11 states and 123 transitions. [2024-06-21 15:54:10,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 263 transitions, 2859 flow [2024-06-21 15:54:10,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 263 transitions, 2715 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 15:54:10,902 INFO L231 Difference]: Finished difference. Result has 342 places, 241 transitions, 2281 flow [2024-06-21 15:54:10,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2281, PETRI_PLACES=342, PETRI_TRANSITIONS=241} [2024-06-21 15:54:10,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-21 15:54:10,902 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 241 transitions, 2281 flow [2024-06-21 15:54:10,903 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) [2024-06-21 15:54:10,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:10,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:10,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 15:54:10,903 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)] === [2024-06-21 15:54:10,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1627176197, now seen corresponding path program 24 times [2024-06-21 15:54:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190975944] [2024-06-21 15:54:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:10,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:14,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:14,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190975944] [2024-06-21 15:54:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190975944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:14,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:14,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85417344] [2024-06-21 15:54:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:14,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:14,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:14,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:14,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 241 transitions, 2281 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) [2024-06-21 15:54:14,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:14,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:14,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:15,692 INFO L124 PetriNetUnfolderBase]: 797/1547 cut-off events. [2024-06-21 15:54:15,692 INFO L125 PetriNetUnfolderBase]: For 278581/278581 co-relation queries the response was YES. [2024-06-21 15:54:15,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 1547 events. 797/1547 cut-off events. For 278581/278581 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9017 event pairs, 141 based on Foata normal form. 10/1553 useless extension candidates. Maximal degree in co-relation 9448. Up to 914 conditions per place. [2024-06-21 15:54:15,709 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 145 selfloop transitions, 110 changer transitions 11/268 dead transitions. [2024-06-21 15:54:15,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 268 transitions, 2903 flow [2024-06-21 15:54:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:54:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:54:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 15:54:15,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-21 15:54:15,710 INFO L175 Difference]: Start difference. First operand has 342 places, 241 transitions, 2281 flow. Second operand 12 states and 134 transitions. [2024-06-21 15:54:15,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 268 transitions, 2903 flow [2024-06-21 15:54:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 268 transitions, 2705 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 15:54:16,484 INFO L231 Difference]: Finished difference. Result has 345 places, 238 transitions, 2282 flow [2024-06-21 15:54:16,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2282, PETRI_PLACES=345, PETRI_TRANSITIONS=238} [2024-06-21 15:54:16,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-21 15:54:16,485 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 238 transitions, 2282 flow [2024-06-21 15:54:16,485 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) [2024-06-21 15:54:16,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:16,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:16,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 15:54:16,486 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)] === [2024-06-21 15:54:16,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:16,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1689530355, now seen corresponding path program 32 times [2024-06-21 15:54:16,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:16,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589004635] [2024-06-21 15:54:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:19,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:19,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589004635] [2024-06-21 15:54:19,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589004635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:19,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:19,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808015898] [2024-06-21 15:54:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:19,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:19,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:20,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:20,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 238 transitions, 2282 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) [2024-06-21 15:54:20,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:20,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:20,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:20,758 INFO L124 PetriNetUnfolderBase]: 775/1505 cut-off events. [2024-06-21 15:54:20,759 INFO L125 PetriNetUnfolderBase]: For 229015/229015 co-relation queries the response was YES. [2024-06-21 15:54:20,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1505 events. 775/1505 cut-off events. For 229015/229015 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8737 event pairs, 145 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 9420. Up to 1224 conditions per place. [2024-06-21 15:54:20,775 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 66 changer transitions 0/259 dead transitions. [2024-06-21 15:54:20,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 259 transitions, 2912 flow [2024-06-21 15:54:20,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 15:54:20,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-21 15:54:20,776 INFO L175 Difference]: Start difference. First operand has 345 places, 238 transitions, 2282 flow. Second operand 11 states and 120 transitions. [2024-06-21 15:54:20,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 259 transitions, 2912 flow [2024-06-21 15:54:21,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 259 transitions, 2686 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 15:54:21,690 INFO L231 Difference]: Finished difference. Result has 342 places, 239 transitions, 2262 flow [2024-06-21 15:54:21,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2262, PETRI_PLACES=342, PETRI_TRANSITIONS=239} [2024-06-21 15:54:21,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-21 15:54:21,691 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 239 transitions, 2262 flow [2024-06-21 15:54:21,691 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) [2024-06-21 15:54:21,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:21,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:21,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 15:54:21,691 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)] === [2024-06-21 15:54:21,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash -336276339, now seen corresponding path program 33 times [2024-06-21 15:54:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:21,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902214673] [2024-06-21 15:54:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:24,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:24,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902214673] [2024-06-21 15:54:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902214673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:24,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:24,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:54:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095519908] [2024-06-21 15:54:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:24,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:54:24,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:24,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:54:24,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:54:24,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:24,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 239 transitions, 2262 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:54:24,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:24,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:24,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:25,552 INFO L124 PetriNetUnfolderBase]: 779/1513 cut-off events. [2024-06-21 15:54:25,552 INFO L125 PetriNetUnfolderBase]: For 227483/227483 co-relation queries the response was YES. [2024-06-21 15:54:25,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9569 conditions, 1513 events. 779/1513 cut-off events. For 227483/227483 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8804 event pairs, 145 based on Foata normal form. 2/1511 useless extension candidates. Maximal degree in co-relation 9418. Up to 1232 conditions per place. [2024-06-21 15:54:25,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 65 changer transitions 0/260 dead transitions. [2024-06-21 15:54:25,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 260 transitions, 2896 flow [2024-06-21 15:54:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 15:54:25,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-21 15:54:25,567 INFO L175 Difference]: Start difference. First operand has 342 places, 239 transitions, 2262 flow. Second operand 11 states and 119 transitions. [2024-06-21 15:54:25,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 260 transitions, 2896 flow [2024-06-21 15:54:26,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 260 transitions, 2691 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-21 15:54:26,509 INFO L231 Difference]: Finished difference. Result has 343 places, 240 transitions, 2263 flow [2024-06-21 15:54:26,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2263, PETRI_PLACES=343, PETRI_TRANSITIONS=240} [2024-06-21 15:54:26,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 15:54:26,510 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 240 transitions, 2263 flow [2024-06-21 15:54:26,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:54:26,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:26,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:26,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 15:54:26,510 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)] === [2024-06-21 15:54:26,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:26,510 INFO L85 PathProgramCache]: Analyzing trace with hash 528964377, now seen corresponding path program 34 times [2024-06-21 15:54:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:26,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652227044] [2024-06-21 15:54:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:26,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652227044] [2024-06-21 15:54:29,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652227044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:29,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:29,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:29,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946101805] [2024-06-21 15:54:29,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:29,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:29,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:29,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:29,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:29,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 240 transitions, 2263 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) [2024-06-21 15:54:29,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:29,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:29,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:30,492 INFO L124 PetriNetUnfolderBase]: 783/1521 cut-off events. [2024-06-21 15:54:30,492 INFO L125 PetriNetUnfolderBase]: For 231419/231419 co-relation queries the response was YES. [2024-06-21 15:54:30,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9608 conditions, 1521 events. 783/1521 cut-off events. For 231419/231419 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8849 event pairs, 145 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 9457. Up to 1240 conditions per place. [2024-06-21 15:54:30,509 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 64 changer transitions 0/261 dead transitions. [2024-06-21 15:54:30,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 261 transitions, 2901 flow [2024-06-21 15:54:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 15:54:30,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-21 15:54:30,511 INFO L175 Difference]: Start difference. First operand has 343 places, 240 transitions, 2263 flow. Second operand 11 states and 118 transitions. [2024-06-21 15:54:30,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 261 transitions, 2901 flow [2024-06-21 15:54:31,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 261 transitions, 2705 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-21 15:54:31,289 INFO L231 Difference]: Finished difference. Result has 345 places, 241 transitions, 2273 flow [2024-06-21 15:54:31,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2273, PETRI_PLACES=345, PETRI_TRANSITIONS=241} [2024-06-21 15:54:31,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-21 15:54:31,289 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 241 transitions, 2273 flow [2024-06-21 15:54:31,289 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) [2024-06-21 15:54:31,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:31,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 15:54:31,290 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)] === [2024-06-21 15:54:31,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1683958229, now seen corresponding path program 25 times [2024-06-21 15:54:31,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:31,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943579109] [2024-06-21 15:54:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:35,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:35,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943579109] [2024-06-21 15:54:35,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943579109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:35,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:35,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:54:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919388154] [2024-06-21 15:54:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:35,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:54:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:54:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:54:35,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:35,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 241 transitions, 2273 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:54:35,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:35,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:35,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:36,671 INFO L124 PetriNetUnfolderBase]: 785/1531 cut-off events. [2024-06-21 15:54:36,671 INFO L125 PetriNetUnfolderBase]: For 259926/259926 co-relation queries the response was YES. [2024-06-21 15:54:36,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9049 conditions, 1531 events. 785/1531 cut-off events. For 259926/259926 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8941 event pairs, 151 based on Foata normal form. 10/1537 useless extension candidates. Maximal degree in co-relation 8897. Up to 1200 conditions per place. [2024-06-21 15:54:36,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 65 changer transitions 9/267 dead transitions. [2024-06-21 15:54:36,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 267 transitions, 2885 flow [2024-06-21 15:54:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:54:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:54:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-21 15:54:36,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-21 15:54:36,691 INFO L175 Difference]: Start difference. First operand has 345 places, 241 transitions, 2273 flow. Second operand 12 states and 133 transitions. [2024-06-21 15:54:36,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 267 transitions, 2885 flow [2024-06-21 15:54:37,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 267 transitions, 2689 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-21 15:54:37,437 INFO L231 Difference]: Finished difference. Result has 348 places, 238 transitions, 2193 flow [2024-06-21 15:54:37,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2193, PETRI_PLACES=348, PETRI_TRANSITIONS=238} [2024-06-21 15:54:37,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 15:54:37,438 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 238 transitions, 2193 flow [2024-06-21 15:54:37,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:54:37,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:37,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:37,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 15:54:37,438 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)] === [2024-06-21 15:54:37,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1937577659, now seen corresponding path program 26 times [2024-06-21 15:54:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:37,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465681229] [2024-06-21 15:54:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:41,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:41,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465681229] [2024-06-21 15:54:41,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465681229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:41,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:41,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:54:41,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6798240] [2024-06-21 15:54:41,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:41,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:54:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:54:41,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:54:41,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:41,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 238 transitions, 2193 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:54:41,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:41,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:41,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:42,525 INFO L124 PetriNetUnfolderBase]: 775/1517 cut-off events. [2024-06-21 15:54:42,525 INFO L125 PetriNetUnfolderBase]: For 261821/261821 co-relation queries the response was YES. [2024-06-21 15:54:42,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8890 conditions, 1517 events. 775/1517 cut-off events. For 261821/261821 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8881 event pairs, 163 based on Foata normal form. 10/1523 useless extension candidates. Maximal degree in co-relation 8737. Up to 1279 conditions per place. [2024-06-21 15:54:42,542 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 43 changer transitions 9/265 dead transitions. [2024-06-21 15:54:42,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 265 transitions, 2803 flow [2024-06-21 15:54:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:54:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:54:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 15:54:42,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-21 15:54:42,543 INFO L175 Difference]: Start difference. First operand has 348 places, 238 transitions, 2193 flow. Second operand 12 states and 134 transitions. [2024-06-21 15:54:42,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 265 transitions, 2803 flow [2024-06-21 15:54:43,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 265 transitions, 2667 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 15:54:43,260 INFO L231 Difference]: Finished difference. Result has 346 places, 235 transitions, 2125 flow [2024-06-21 15:54:43,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2125, PETRI_PLACES=346, PETRI_TRANSITIONS=235} [2024-06-21 15:54:43,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 15:54:43,261 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 235 transitions, 2125 flow [2024-06-21 15:54:43,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:54:43,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:43,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:43,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 15:54:43,261 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)] === [2024-06-21 15:54:43,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:43,261 INFO L85 PathProgramCache]: Analyzing trace with hash 935197499, now seen corresponding path program 35 times [2024-06-21 15:54:43,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:43,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708053714] [2024-06-21 15:54:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:43,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:46,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708053714] [2024-06-21 15:54:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708053714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:46,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:46,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965554940] [2024-06-21 15:54:46,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:46,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:46,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:46,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:46,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:46,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 235 transitions, 2125 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) [2024-06-21 15:54:46,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:46,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:46,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:47,022 INFO L124 PetriNetUnfolderBase]: 746/1462 cut-off events. [2024-06-21 15:54:47,023 INFO L125 PetriNetUnfolderBase]: For 188111/188111 co-relation queries the response was YES. [2024-06-21 15:54:47,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8319 conditions, 1462 events. 746/1462 cut-off events. For 188111/188111 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8532 event pairs, 162 based on Foata normal form. 2/1460 useless extension candidates. Maximal degree in co-relation 8167. Up to 1288 conditions per place. [2024-06-21 15:54:47,039 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 41 changer transitions 0/254 dead transitions. [2024-06-21 15:54:47,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 254 transitions, 2673 flow [2024-06-21 15:54:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 15:54:47,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-21 15:54:47,040 INFO L175 Difference]: Start difference. First operand has 346 places, 235 transitions, 2125 flow. Second operand 11 states and 117 transitions. [2024-06-21 15:54:47,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 254 transitions, 2673 flow [2024-06-21 15:54:47,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 254 transitions, 2581 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 15:54:47,821 INFO L231 Difference]: Finished difference. Result has 343 places, 235 transitions, 2119 flow [2024-06-21 15:54:47,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2119, PETRI_PLACES=343, PETRI_TRANSITIONS=235} [2024-06-21 15:54:47,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 15:54:47,821 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 235 transitions, 2119 flow [2024-06-21 15:54:47,821 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) [2024-06-21 15:54:47,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:47,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:47,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 15:54:47,822 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)] === [2024-06-21 15:54:47,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:47,822 INFO L85 PathProgramCache]: Analyzing trace with hash 935191919, now seen corresponding path program 36 times [2024-06-21 15:54:47,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:47,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794532179] [2024-06-21 15:54:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:47,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:51,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794532179] [2024-06-21 15:54:51,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794532179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:51,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:51,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924815674] [2024-06-21 15:54:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:51,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:51,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:51,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 235 transitions, 2119 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) [2024-06-21 15:54:51,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:51,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:51,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:51,947 INFO L124 PetriNetUnfolderBase]: 750/1470 cut-off events. [2024-06-21 15:54:51,947 INFO L125 PetriNetUnfolderBase]: For 187489/187489 co-relation queries the response was YES. [2024-06-21 15:54:51,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1470 events. 750/1470 cut-off events. For 187489/187489 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8586 event pairs, 162 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 8297. Up to 1296 conditions per place. [2024-06-21 15:54:51,964 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 213 selfloop transitions, 40 changer transitions 0/255 dead transitions. [2024-06-21 15:54:51,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 255 transitions, 2743 flow [2024-06-21 15:54:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 15:54:51,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-21 15:54:51,965 INFO L175 Difference]: Start difference. First operand has 343 places, 235 transitions, 2119 flow. Second operand 11 states and 116 transitions. [2024-06-21 15:54:51,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 255 transitions, 2743 flow [2024-06-21 15:54:52,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 255 transitions, 2601 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-21 15:54:52,777 INFO L231 Difference]: Finished difference. Result has 344 places, 236 transitions, 2137 flow [2024-06-21 15:54:52,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2137, PETRI_PLACES=344, PETRI_TRANSITIONS=236} [2024-06-21 15:54:52,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 15:54:52,779 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 236 transitions, 2137 flow [2024-06-21 15:54:52,779 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) [2024-06-21 15:54:52,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:52,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:52,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 15:54:52,780 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)] === [2024-06-21 15:54:52,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 935047769, now seen corresponding path program 37 times [2024-06-21 15:54:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753555559] [2024-06-21 15:54:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:54:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:54:56,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:54:56,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753555559] [2024-06-21 15:54:56,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753555559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:54:56,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:54:56,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:54:56,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351838232] [2024-06-21 15:54:56,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:54:56,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:54:56,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:54:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:54:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:54:56,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:54:56,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 236 transitions, 2137 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) [2024-06-21 15:54:56,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:54:56,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:54:56,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:54:56,789 INFO L124 PetriNetUnfolderBase]: 754/1478 cut-off events. [2024-06-21 15:54:56,789 INFO L125 PetriNetUnfolderBase]: For 191894/191894 co-relation queries the response was YES. [2024-06-21 15:54:56,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8529 conditions, 1478 events. 754/1478 cut-off events. For 191894/191894 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8641 event pairs, 162 based on Foata normal form. 2/1476 useless extension candidates. Maximal degree in co-relation 8377. Up to 1304 conditions per place. [2024-06-21 15:54:56,807 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 39 changer transitions 0/256 dead transitions. [2024-06-21 15:54:56,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 256 transitions, 2765 flow [2024-06-21 15:54:56,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:54:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:54:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 15:54:56,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-21 15:54:56,808 INFO L175 Difference]: Start difference. First operand has 344 places, 236 transitions, 2137 flow. Second operand 11 states and 115 transitions. [2024-06-21 15:54:56,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 256 transitions, 2765 flow [2024-06-21 15:54:57,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 256 transitions, 2615 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 15:54:57,555 INFO L231 Difference]: Finished difference. Result has 346 places, 237 transitions, 2147 flow [2024-06-21 15:54:57,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2147, PETRI_PLACES=346, PETRI_TRANSITIONS=237} [2024-06-21 15:54:57,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 15:54:57,556 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 237 transitions, 2147 flow [2024-06-21 15:54:57,556 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) [2024-06-21 15:54:57,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:54:57,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:54:57,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 15:54:57,557 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)] === [2024-06-21 15:54:57,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:54:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash 931472849, now seen corresponding path program 38 times [2024-06-21 15:54:57,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:54:57,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312565013] [2024-06-21 15:54:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:54:57,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:54:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:00,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:00,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312565013] [2024-06-21 15:55:00,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312565013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:00,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:00,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:55:00,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323923602] [2024-06-21 15:55:00,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:00,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:55:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:55:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:55:00,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:00,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 237 transitions, 2147 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) [2024-06-21 15:55:00,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:00,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:00,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:01,373 INFO L124 PetriNetUnfolderBase]: 751/1473 cut-off events. [2024-06-21 15:55:01,374 INFO L125 PetriNetUnfolderBase]: For 178319/178319 co-relation queries the response was YES. [2024-06-21 15:55:01,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8096 conditions, 1473 events. 751/1473 cut-off events. For 178319/178319 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8633 event pairs, 159 based on Foata normal form. 2/1471 useless extension candidates. Maximal degree in co-relation 7943. Up to 1299 conditions per place. [2024-06-21 15:55:01,390 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 38 changer transitions 0/256 dead transitions. [2024-06-21 15:55:01,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 256 transitions, 2699 flow [2024-06-21 15:55:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 15:55:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 15:55:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 15:55:01,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-21 15:55:01,392 INFO L175 Difference]: Start difference. First operand has 346 places, 237 transitions, 2147 flow. Second operand 11 states and 114 transitions. [2024-06-21 15:55:01,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 256 transitions, 2699 flow [2024-06-21 15:55:02,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 256 transitions, 2549 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-21 15:55:02,135 INFO L231 Difference]: Finished difference. Result has 348 places, 237 transitions, 2077 flow [2024-06-21 15:55:02,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2077, PETRI_PLACES=348, PETRI_TRANSITIONS=237} [2024-06-21 15:55:02,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 15:55:02,135 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 237 transitions, 2077 flow [2024-06-21 15:55:02,135 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) [2024-06-21 15:55:02,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:02,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:02,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 15:55:02,136 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)] === [2024-06-21 15:55:02,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1079297775, now seen corresponding path program 27 times [2024-06-21 15:55:02,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:02,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188292287] [2024-06-21 15:55:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:05,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:05,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188292287] [2024-06-21 15:55:05,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188292287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:05,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:05,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:55:05,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404755801] [2024-06-21 15:55:05,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:05,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:55:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:55:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:55:05,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:05,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 237 transitions, 2077 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) [2024-06-21 15:55:05,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:05,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:05,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:06,623 INFO L124 PetriNetUnfolderBase]: 738/1450 cut-off events. [2024-06-21 15:55:06,623 INFO L125 PetriNetUnfolderBase]: For 164006/164006 co-relation queries the response was YES. [2024-06-21 15:55:06,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 1450 events. 738/1450 cut-off events. For 164006/164006 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8509 event pairs, 156 based on Foata normal form. 10/1456 useless extension candidates. Maximal degree in co-relation 6545. Up to 1226 conditions per place. [2024-06-21 15:55:06,639 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 40 changer transitions 9/261 dead transitions. [2024-06-21 15:55:06,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 261 transitions, 2653 flow [2024-06-21 15:55:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:55:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:55:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 15:55:06,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-21 15:55:06,640 INFO L175 Difference]: Start difference. First operand has 348 places, 237 transitions, 2077 flow. Second operand 12 states and 130 transitions. [2024-06-21 15:55:06,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 261 transitions, 2653 flow [2024-06-21 15:55:07,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 261 transitions, 2414 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-21 15:55:07,162 INFO L231 Difference]: Finished difference. Result has 349 places, 233 transitions, 1885 flow [2024-06-21 15:55:07,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1885, PETRI_PLACES=349, PETRI_TRANSITIONS=233} [2024-06-21 15:55:07,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-21 15:55:07,162 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 233 transitions, 1885 flow [2024-06-21 15:55:07,162 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) [2024-06-21 15:55:07,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:07,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:07,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 15:55:07,163 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)] === [2024-06-21 15:55:07,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1893709207, now seen corresponding path program 1 times [2024-06-21 15:55:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:07,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191705931] [2024-06-21 15:55:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:07,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:10,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191705931] [2024-06-21 15:55:10,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191705931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:10,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:10,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:55:10,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759666955] [2024-06-21 15:55:10,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:10,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:55:10,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:55:10,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:55:10,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:10,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 233 transitions, 1885 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:10,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:10,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:10,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:11,140 INFO L124 PetriNetUnfolderBase]: 741/1464 cut-off events. [2024-06-21 15:55:11,140 INFO L125 PetriNetUnfolderBase]: For 135369/135369 co-relation queries the response was YES. [2024-06-21 15:55:11,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 1464 events. 741/1464 cut-off events. For 135369/135369 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8690 event pairs, 173 based on Foata normal form. 6/1469 useless extension candidates. Maximal degree in co-relation 6234. Up to 1326 conditions per place. [2024-06-21 15:55:11,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 18 changer transitions 19/265 dead transitions. [2024-06-21 15:55:11,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 265 transitions, 2508 flow [2024-06-21 15:55:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:55:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:55:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 15:55:11,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-21 15:55:11,158 INFO L175 Difference]: Start difference. First operand has 349 places, 233 transitions, 1885 flow. Second operand 12 states and 125 transitions. [2024-06-21 15:55:11,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 265 transitions, 2508 flow [2024-06-21 15:55:11,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 265 transitions, 2323 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-21 15:55:11,550 INFO L231 Difference]: Finished difference. Result has 350 places, 233 transitions, 1758 flow [2024-06-21 15:55:11,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1758, PETRI_PLACES=350, PETRI_TRANSITIONS=233} [2024-06-21 15:55:11,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-21 15:55:11,550 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 233 transitions, 1758 flow [2024-06-21 15:55:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:11,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:11,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:11,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 15:55:11,551 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)] === [2024-06-21 15:55:11,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:11,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1388734273, now seen corresponding path program 2 times [2024-06-21 15:55:11,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:11,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129485184] [2024-06-21 15:55:11,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:11,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:15,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:15,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129485184] [2024-06-21 15:55:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129485184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:15,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:15,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:15,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479251612] [2024-06-21 15:55:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:15,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:15,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:15,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:15,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 233 transitions, 1758 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:15,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:16,554 INFO L124 PetriNetUnfolderBase]: 729/1442 cut-off events. [2024-06-21 15:55:16,554 INFO L125 PetriNetUnfolderBase]: For 133028/133028 co-relation queries the response was YES. [2024-06-21 15:55:16,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 1442 events. 729/1442 cut-off events. For 133028/133028 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8550 event pairs, 166 based on Foata normal form. 6/1447 useless extension candidates. Maximal degree in co-relation 5969. Up to 1308 conditions per place. [2024-06-21 15:55:16,570 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 23 changer transitions 11/265 dead transitions. [2024-06-21 15:55:16,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 265 transitions, 2382 flow [2024-06-21 15:55:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:55:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:55:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-21 15:55:16,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3245192307692308 [2024-06-21 15:55:16,572 INFO L175 Difference]: Start difference. First operand has 350 places, 233 transitions, 1758 flow. Second operand 13 states and 135 transitions. [2024-06-21 15:55:16,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 265 transitions, 2382 flow [2024-06-21 15:55:17,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 265 transitions, 2338 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 15:55:17,018 INFO L231 Difference]: Finished difference. Result has 351 places, 234 transitions, 1780 flow [2024-06-21 15:55:17,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1780, PETRI_PLACES=351, PETRI_TRANSITIONS=234} [2024-06-21 15:55:17,019 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-21 15:55:17,019 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 234 transitions, 1780 flow [2024-06-21 15:55:17,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:17,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:17,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:17,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 15:55:17,019 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)] === [2024-06-21 15:55:17,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1388907253, now seen corresponding path program 3 times [2024-06-21 15:55:17,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:17,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300785982] [2024-06-21 15:55:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:20,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300785982] [2024-06-21 15:55:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300785982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:20,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:20,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:20,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563959849] [2024-06-21 15:55:20,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:20,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:20,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:20,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:20,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 234 transitions, 1780 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:20,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:20,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:20,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:21,694 INFO L124 PetriNetUnfolderBase]: 727/1440 cut-off events. [2024-06-21 15:55:21,694 INFO L125 PetriNetUnfolderBase]: For 133028/133028 co-relation queries the response was YES. [2024-06-21 15:55:21,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6113 conditions, 1440 events. 727/1440 cut-off events. For 133028/133028 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8543 event pairs, 166 based on Foata normal form. 6/1445 useless extension candidates. Maximal degree in co-relation 5958. Up to 1306 conditions per place. [2024-06-21 15:55:21,709 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 21 changer transitions 12/262 dead transitions. [2024-06-21 15:55:21,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 262 transitions, 2372 flow [2024-06-21 15:55:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:55:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:55:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 15:55:21,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-21 15:55:21,711 INFO L175 Difference]: Start difference. First operand has 351 places, 234 transitions, 1780 flow. Second operand 12 states and 127 transitions. [2024-06-21 15:55:21,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 262 transitions, 2372 flow [2024-06-21 15:55:22,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 262 transitions, 2322 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 15:55:22,183 INFO L231 Difference]: Finished difference. Result has 350 places, 232 transitions, 1755 flow [2024-06-21 15:55:22,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1755, PETRI_PLACES=350, PETRI_TRANSITIONS=232} [2024-06-21 15:55:22,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-21 15:55:22,183 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 232 transitions, 1755 flow [2024-06-21 15:55:22,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:22,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:22,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:22,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 15:55:22,184 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)] === [2024-06-21 15:55:22,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1393375903, now seen corresponding path program 4 times [2024-06-21 15:55:22,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:22,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817895299] [2024-06-21 15:55:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:22,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:26,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:26,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817895299] [2024-06-21 15:55:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817895299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:26,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:26,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61669809] [2024-06-21 15:55:26,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:26,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:26,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 232 transitions, 1755 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:26,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:26,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:26,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:26,840 INFO L124 PetriNetUnfolderBase]: 721/1430 cut-off events. [2024-06-21 15:55:26,840 INFO L125 PetriNetUnfolderBase]: For 133008/133008 co-relation queries the response was YES. [2024-06-21 15:55:26,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 1430 events. 721/1430 cut-off events. For 133008/133008 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8461 event pairs, 166 based on Foata normal form. 6/1435 useless extension candidates. Maximal degree in co-relation 5910. Up to 1296 conditions per place. [2024-06-21 15:55:26,852 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 19 changer transitions 15/260 dead transitions. [2024-06-21 15:55:26,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 260 transitions, 2343 flow [2024-06-21 15:55:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 15:55:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 15:55:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 15:55:26,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-21 15:55:26,853 INFO L175 Difference]: Start difference. First operand has 350 places, 232 transitions, 1755 flow. Second operand 12 states and 126 transitions. [2024-06-21 15:55:26,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 260 transitions, 2343 flow [2024-06-21 15:55:27,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 260 transitions, 2293 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:55:27,275 INFO L231 Difference]: Finished difference. Result has 348 places, 229 transitions, 1719 flow [2024-06-21 15:55:27,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1719, PETRI_PLACES=348, PETRI_TRANSITIONS=229} [2024-06-21 15:55:27,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 15:55:27,276 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 229 transitions, 1719 flow [2024-06-21 15:55:27,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:27,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:27,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:27,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 15:55:27,276 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)] === [2024-06-21 15:55:27,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1504198423, now seen corresponding path program 5 times [2024-06-21 15:55:27,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:27,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24530290] [2024-06-21 15:55:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:27,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:31,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:31,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24530290] [2024-06-21 15:55:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24530290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:31,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:31,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:31,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467736852] [2024-06-21 15:55:31,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:31,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:31,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:31,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 229 transitions, 1719 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:31,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:31,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:31,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:32,471 INFO L124 PetriNetUnfolderBase]: 719/1428 cut-off events. [2024-06-21 15:55:32,471 INFO L125 PetriNetUnfolderBase]: For 132984/132984 co-relation queries the response was YES. [2024-06-21 15:55:32,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6019 conditions, 1428 events. 719/1428 cut-off events. For 132984/132984 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8464 event pairs, 166 based on Foata normal form. 6/1433 useless extension candidates. Maximal degree in co-relation 5866. Up to 1294 conditions per place. [2024-06-21 15:55:32,486 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 17 changer transitions 20/261 dead transitions. [2024-06-21 15:55:32,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 261 transitions, 2321 flow [2024-06-21 15:55:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:55:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:55:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-21 15:55:32,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2024-06-21 15:55:32,487 INFO L175 Difference]: Start difference. First operand has 348 places, 229 transitions, 1719 flow. Second operand 13 states and 132 transitions. [2024-06-21 15:55:32,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 261 transitions, 2321 flow [2024-06-21 15:55:32,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 261 transitions, 2273 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:55:32,955 INFO L231 Difference]: Finished difference. Result has 348 places, 227 transitions, 1691 flow [2024-06-21 15:55:32,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1691, PETRI_PLACES=348, PETRI_TRANSITIONS=227} [2024-06-21 15:55:32,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 15:55:32,955 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 227 transitions, 1691 flow [2024-06-21 15:55:32,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:32,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:32,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:32,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 15:55:32,956 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)] === [2024-06-21 15:55:32,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1496468025, now seen corresponding path program 6 times [2024-06-21 15:55:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:32,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300766292] [2024-06-21 15:55:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:36,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:36,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300766292] [2024-06-21 15:55:36,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300766292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:36,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:36,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959314140] [2024-06-21 15:55:36,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:36,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:36,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:36,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 227 transitions, 1691 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:36,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:36,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:36,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:37,538 INFO L124 PetriNetUnfolderBase]: 718/1431 cut-off events. [2024-06-21 15:55:37,538 INFO L125 PetriNetUnfolderBase]: For 132884/132884 co-relation queries the response was YES. [2024-06-21 15:55:37,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6000 conditions, 1431 events. 718/1431 cut-off events. For 132884/132884 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8522 event pairs, 177 based on Foata normal form. 6/1436 useless extension candidates. Maximal degree in co-relation 5846. Up to 1291 conditions per place. [2024-06-21 15:55:37,553 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 15 changer transitions 25/261 dead transitions. [2024-06-21 15:55:37,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 261 transitions, 2302 flow [2024-06-21 15:55:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:55:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:55:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-21 15:55:37,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2024-06-21 15:55:37,554 INFO L175 Difference]: Start difference. First operand has 348 places, 227 transitions, 1691 flow. Second operand 13 states and 132 transitions. [2024-06-21 15:55:37,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 261 transitions, 2302 flow [2024-06-21 15:55:37,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 261 transitions, 2254 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 15:55:37,970 INFO L231 Difference]: Finished difference. Result has 347 places, 225 transitions, 1663 flow [2024-06-21 15:55:37,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1663, PETRI_PLACES=347, PETRI_TRANSITIONS=225} [2024-06-21 15:55:37,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-21 15:55:37,970 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 225 transitions, 1663 flow [2024-06-21 15:55:37,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:37,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:37,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:37,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 15:55:37,971 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)] === [2024-06-21 15:55:37,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash 201574301, now seen corresponding path program 7 times [2024-06-21 15:55:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:37,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400146760] [2024-06-21 15:55:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:37,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:42,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:42,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400146760] [2024-06-21 15:55:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400146760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:42,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:42,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576933593] [2024-06-21 15:55:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:42,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:42,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:42,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 225 transitions, 1663 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:42,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:42,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:42,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:43,657 INFO L124 PetriNetUnfolderBase]: 690/1375 cut-off events. [2024-06-21 15:55:43,657 INFO L125 PetriNetUnfolderBase]: For 132781/132781 co-relation queries the response was YES. [2024-06-21 15:55:43,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5828 conditions, 1375 events. 690/1375 cut-off events. For 132781/132781 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8101 event pairs, 163 based on Foata normal form. 6/1380 useless extension candidates. Maximal degree in co-relation 5674. Up to 1143 conditions per place. [2024-06-21 15:55:43,673 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 37 changer transitions 15/258 dead transitions. [2024-06-21 15:55:43,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 258 transitions, 2272 flow [2024-06-21 15:55:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:55:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:55:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-21 15:55:43,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2024-06-21 15:55:43,674 INFO L175 Difference]: Start difference. First operand has 347 places, 225 transitions, 1663 flow. Second operand 13 states and 140 transitions. [2024-06-21 15:55:43,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 258 transitions, 2272 flow [2024-06-21 15:55:44,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 258 transitions, 2230 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 15:55:44,052 INFO L231 Difference]: Finished difference. Result has 341 places, 219 transitions, 1642 flow [2024-06-21 15:55:44,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1642, PETRI_PLACES=341, PETRI_TRANSITIONS=219} [2024-06-21 15:55:44,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-21 15:55:44,053 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 219 transitions, 1642 flow [2024-06-21 15:55:44,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:44,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:44,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:44,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 15:55:44,053 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)] === [2024-06-21 15:55:44,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash -26499829, now seen corresponding path program 8 times [2024-06-21 15:55:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:44,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439226414] [2024-06-21 15:55:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:44,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:49,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439226414] [2024-06-21 15:55:49,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439226414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:49,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:49,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:49,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878985163] [2024-06-21 15:55:49,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:50,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:50,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 219 transitions, 1642 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:50,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:50,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:50,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:51,013 INFO L124 PetriNetUnfolderBase]: 683/1362 cut-off events. [2024-06-21 15:55:51,013 INFO L125 PetriNetUnfolderBase]: For 132775/132775 co-relation queries the response was YES. [2024-06-21 15:55:51,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 1362 events. 683/1362 cut-off events. For 132775/132775 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8014 event pairs, 163 based on Foata normal form. 6/1367 useless extension candidates. Maximal degree in co-relation 5636. Up to 1157 conditions per place. [2024-06-21 15:55:51,027 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 32 changer transitions 18/253 dead transitions. [2024-06-21 15:55:51,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 253 transitions, 2244 flow [2024-06-21 15:55:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:55:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:55:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-21 15:55:51,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317307692307692 [2024-06-21 15:55:51,031 INFO L175 Difference]: Start difference. First operand has 341 places, 219 transitions, 1642 flow. Second operand 13 states and 138 transitions. [2024-06-21 15:55:51,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 253 transitions, 2244 flow [2024-06-21 15:55:51,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 253 transitions, 2166 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 15:55:51,412 INFO L231 Difference]: Finished difference. Result has 340 places, 214 transitions, 1585 flow [2024-06-21 15:55:51,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1585, PETRI_PLACES=340, PETRI_TRANSITIONS=214} [2024-06-21 15:55:51,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-21 15:55:51,413 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 214 transitions, 1585 flow [2024-06-21 15:55:51,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:51,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:51,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:51,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 15:55:51,413 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)] === [2024-06-21 15:55:51,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1548974271, now seen corresponding path program 9 times [2024-06-21 15:55:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756465716] [2024-06-21 15:55:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:55:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:55:54,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:55:54,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756465716] [2024-06-21 15:55:54,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756465716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:55:54,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:55:54,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:55:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317721024] [2024-06-21 15:55:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:55:54,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:55:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:55:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:55:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:55:54,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:55:54,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 214 transitions, 1585 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:54,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:55:54,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:55:54,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:55:55,374 INFO L124 PetriNetUnfolderBase]: 664/1325 cut-off events. [2024-06-21 15:55:55,375 INFO L125 PetriNetUnfolderBase]: For 132737/132737 co-relation queries the response was YES. [2024-06-21 15:55:55,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5648 conditions, 1325 events. 664/1325 cut-off events. For 132737/132737 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7742 event pairs, 165 based on Foata normal form. 6/1330 useless extension candidates. Maximal degree in co-relation 5498. Up to 1182 conditions per place. [2024-06-21 15:55:55,389 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 26 changer transitions 11/242 dead transitions. [2024-06-21 15:55:55,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 242 transitions, 2134 flow [2024-06-21 15:55:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:55:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:55:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-21 15:55:55,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3245192307692308 [2024-06-21 15:55:55,390 INFO L175 Difference]: Start difference. First operand has 340 places, 214 transitions, 1585 flow. Second operand 13 states and 135 transitions. [2024-06-21 15:55:55,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 242 transitions, 2134 flow [2024-06-21 15:55:55,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 242 transitions, 2052 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 15:55:55,857 INFO L231 Difference]: Finished difference. Result has 336 places, 211 transitions, 1532 flow [2024-06-21 15:55:55,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1532, PETRI_PLACES=336, PETRI_TRANSITIONS=211} [2024-06-21 15:55:55,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-21 15:55:55,858 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 211 transitions, 1532 flow [2024-06-21 15:55:55,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:55:55,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:55:55,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:55:55,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 15:55:55,858 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)] === [2024-06-21 15:55:55,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:55:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1548801291, now seen corresponding path program 10 times [2024-06-21 15:55:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:55:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719561919] [2024-06-21 15:55:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:55:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:55:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:00,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:00,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719561919] [2024-06-21 15:56:00,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719561919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:00,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:00,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:56:00,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736961232] [2024-06-21 15:56:00,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:00,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:56:00,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:56:00,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:56:00,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:00,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 211 transitions, 1532 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:00,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:00,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:00,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:01,154 INFO L124 PetriNetUnfolderBase]: 654/1307 cut-off events. [2024-06-21 15:56:01,154 INFO L125 PetriNetUnfolderBase]: For 132677/132677 co-relation queries the response was YES. [2024-06-21 15:56:01,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5535 conditions, 1307 events. 654/1307 cut-off events. For 132677/132677 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7629 event pairs, 163 based on Foata normal form. 6/1312 useless extension candidates. Maximal degree in co-relation 5388. Up to 1164 conditions per place. [2024-06-21 15:56:01,168 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 24 changer transitions 14/239 dead transitions. [2024-06-21 15:56:01,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 239 transitions, 2075 flow [2024-06-21 15:56:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-21 15:56:01,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2024-06-21 15:56:01,169 INFO L175 Difference]: Start difference. First operand has 336 places, 211 transitions, 1532 flow. Second operand 13 states and 134 transitions. [2024-06-21 15:56:01,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 239 transitions, 2075 flow [2024-06-21 15:56:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 239 transitions, 2019 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 15:56:01,595 INFO L231 Difference]: Finished difference. Result has 334 places, 207 transitions, 1495 flow [2024-06-21 15:56:01,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1495, PETRI_PLACES=334, PETRI_TRANSITIONS=207} [2024-06-21 15:56:01,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-21 15:56:01,595 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 207 transitions, 1495 flow [2024-06-21 15:56:01,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:01,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:01,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:01,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 15:56:01,596 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)] === [2024-06-21 15:56:01,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1544332641, now seen corresponding path program 11 times [2024-06-21 15:56:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:01,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991880261] [2024-06-21 15:56:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:01,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991880261] [2024-06-21 15:56:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991880261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:05,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:05,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:56:05,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188338372] [2024-06-21 15:56:05,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:56:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:56:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:56:05,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:05,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 207 transitions, 1495 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:05,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:05,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:05,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:06,573 INFO L124 PetriNetUnfolderBase]: 640/1281 cut-off events. [2024-06-21 15:56:06,574 INFO L125 PetriNetUnfolderBase]: For 132655/132655 co-relation queries the response was YES. [2024-06-21 15:56:06,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 1281 events. 640/1281 cut-off events. For 132655/132655 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7413 event pairs, 159 based on Foata normal form. 6/1286 useless extension candidates. Maximal degree in co-relation 5288. Up to 1138 conditions per place. [2024-06-21 15:56:06,587 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 22 changer transitions 17/235 dead transitions. [2024-06-21 15:56:06,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 235 transitions, 2030 flow [2024-06-21 15:56:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-06-21 15:56:06,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31971153846153844 [2024-06-21 15:56:06,588 INFO L175 Difference]: Start difference. First operand has 334 places, 207 transitions, 1495 flow. Second operand 13 states and 133 transitions. [2024-06-21 15:56:06,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 235 transitions, 2030 flow [2024-06-21 15:56:07,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 235 transitions, 1976 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 15:56:07,035 INFO L231 Difference]: Finished difference. Result has 329 places, 202 transitions, 1449 flow [2024-06-21 15:56:07,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1449, PETRI_PLACES=329, PETRI_TRANSITIONS=202} [2024-06-21 15:56:07,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-21 15:56:07,036 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 202 transitions, 1449 flow [2024-06-21 15:56:07,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:07,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:07,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:07,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 15:56:07,036 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)] === [2024-06-21 15:56:07,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1433510121, now seen corresponding path program 12 times [2024-06-21 15:56:07,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:07,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075313804] [2024-06-21 15:56:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:07,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075313804] [2024-06-21 15:56:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075313804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:10,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:10,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:56:10,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137614723] [2024-06-21 15:56:10,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:10,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:56:10,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:56:10,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:56:11,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:11,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 202 transitions, 1449 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:11,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:11,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:11,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:11,786 INFO L124 PetriNetUnfolderBase]: 622/1247 cut-off events. [2024-06-21 15:56:11,786 INFO L125 PetriNetUnfolderBase]: For 132613/132613 co-relation queries the response was YES. [2024-06-21 15:56:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 1247 events. 622/1247 cut-off events. For 132613/132613 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7170 event pairs, 153 based on Foata normal form. 6/1252 useless extension candidates. Maximal degree in co-relation 5156. Up to 1104 conditions per place. [2024-06-21 15:56:11,797 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 19 changer transitions 21/230 dead transitions. [2024-06-21 15:56:11,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 230 transitions, 1974 flow [2024-06-21 15:56:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-21 15:56:11,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2024-06-21 15:56:11,799 INFO L175 Difference]: Start difference. First operand has 329 places, 202 transitions, 1449 flow. Second operand 13 states and 132 transitions. [2024-06-21 15:56:11,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 230 transitions, 1974 flow [2024-06-21 15:56:12,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 230 transitions, 1922 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 15:56:12,195 INFO L231 Difference]: Finished difference. Result has 322 places, 195 transitions, 1377 flow [2024-06-21 15:56:12,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1377, PETRI_PLACES=322, PETRI_TRANSITIONS=195} [2024-06-21 15:56:12,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 15:56:12,195 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 195 transitions, 1377 flow [2024-06-21 15:56:12,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:12,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:12,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 15:56:12,196 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)] === [2024-06-21 15:56:12,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1909888023, now seen corresponding path program 13 times [2024-06-21 15:56:12,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420170793] [2024-06-21 15:56:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420170793] [2024-06-21 15:56:16,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420170793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:16,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:16,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:56:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361911470] [2024-06-21 15:56:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:56:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:56:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:56:16,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:16,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 195 transitions, 1377 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:16,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:16,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:16,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:17,057 INFO L124 PetriNetUnfolderBase]: 608/1221 cut-off events. [2024-06-21 15:56:17,058 INFO L125 PetriNetUnfolderBase]: For 132537/132537 co-relation queries the response was YES. [2024-06-21 15:56:17,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5166 conditions, 1221 events. 608/1221 cut-off events. For 132537/132537 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7006 event pairs, 151 based on Foata normal form. 6/1226 useless extension candidates. Maximal degree in co-relation 5024. Up to 1067 conditions per place. [2024-06-21 15:56:17,070 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 24 changer transitions 14/228 dead transitions. [2024-06-21 15:56:17,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 228 transitions, 1925 flow [2024-06-21 15:56:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:17,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-21 15:56:17,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3245192307692308 [2024-06-21 15:56:17,071 INFO L175 Difference]: Start difference. First operand has 322 places, 195 transitions, 1377 flow. Second operand 13 states and 135 transitions. [2024-06-21 15:56:17,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 228 transitions, 1925 flow [2024-06-21 15:56:17,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 228 transitions, 1877 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 15:56:17,505 INFO L231 Difference]: Finished difference. Result has 316 places, 195 transitions, 1397 flow [2024-06-21 15:56:17,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1397, PETRI_PLACES=316, PETRI_TRANSITIONS=195} [2024-06-21 15:56:17,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 15:56:17,506 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 195 transitions, 1397 flow [2024-06-21 15:56:17,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:17,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:17,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:17,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 15:56:17,506 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)] === [2024-06-21 15:56:17,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1914356673, now seen corresponding path program 14 times [2024-06-21 15:56:17,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:17,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061797996] [2024-06-21 15:56:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:17,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:21,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061797996] [2024-06-21 15:56:21,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061797996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:21,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:21,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:56:21,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769419342] [2024-06-21 15:56:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:21,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:56:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:56:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:56:22,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:22,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 195 transitions, 1397 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:22,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:22,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:22,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:22,978 INFO L124 PetriNetUnfolderBase]: 606/1219 cut-off events. [2024-06-21 15:56:22,979 INFO L125 PetriNetUnfolderBase]: For 132561/132561 co-relation queries the response was YES. [2024-06-21 15:56:22,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 1219 events. 606/1219 cut-off events. For 132561/132561 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6995 event pairs, 151 based on Foata normal form. 6/1224 useless extension candidates. Maximal degree in co-relation 5030. Up to 1065 conditions per place. [2024-06-21 15:56:22,991 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 16 changer transitions 26/227 dead transitions. [2024-06-21 15:56:22,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 227 transitions, 1931 flow [2024-06-21 15:56:22,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-06-21 15:56:22,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2024-06-21 15:56:22,992 INFO L175 Difference]: Start difference. First operand has 316 places, 195 transitions, 1397 flow. Second operand 13 states and 134 transitions. [2024-06-21 15:56:22,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 227 transitions, 1931 flow [2024-06-21 15:56:23,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 227 transitions, 1881 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 15:56:23,350 INFO L231 Difference]: Finished difference. Result has 318 places, 187 transitions, 1294 flow [2024-06-21 15:56:23,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1294, PETRI_PLACES=318, PETRI_TRANSITIONS=187} [2024-06-21 15:56:23,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-21 15:56:23,350 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 187 transitions, 1294 flow [2024-06-21 15:56:23,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:23,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:23,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:23,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 15:56:23,351 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)] === [2024-06-21 15:56:23,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:23,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1992998109, now seen corresponding path program 15 times [2024-06-21 15:56:23,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:23,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344293845] [2024-06-21 15:56:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:23,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:27,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344293845] [2024-06-21 15:56:27,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344293845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:27,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:27,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-21 15:56:27,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502918003] [2024-06-21 15:56:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:27,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-21 15:56:27,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:27,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-21 15:56:27,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-06-21 15:56:28,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:28,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 187 transitions, 1294 flow. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:28,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:28,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:28,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:28,957 INFO L124 PetriNetUnfolderBase]: 577/1154 cut-off events. [2024-06-21 15:56:28,957 INFO L125 PetriNetUnfolderBase]: For 132298/132298 co-relation queries the response was YES. [2024-06-21 15:56:28,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4924 conditions, 1154 events. 577/1154 cut-off events. For 132298/132298 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6534 event pairs, 172 based on Foata normal form. 6/1159 useless extension candidates. Maximal degree in co-relation 4782. Up to 1039 conditions per place. [2024-06-21 15:56:28,969 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 18 changer transitions 11/214 dead transitions. [2024-06-21 15:56:28,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 214 transitions, 1782 flow [2024-06-21 15:56:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 132 transitions. [2024-06-21 15:56:28,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2024-06-21 15:56:28,970 INFO L175 Difference]: Start difference. First operand has 318 places, 187 transitions, 1294 flow. Second operand 13 states and 132 transitions. [2024-06-21 15:56:28,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 214 transitions, 1782 flow [2024-06-21 15:56:29,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 214 transitions, 1709 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-21 15:56:29,388 INFO L231 Difference]: Finished difference. Result has 308 places, 184 transitions, 1239 flow [2024-06-21 15:56:29,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1239, PETRI_PLACES=308, PETRI_TRANSITIONS=184} [2024-06-21 15:56:29,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-21 15:56:29,388 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 184 transitions, 1239 flow [2024-06-21 15:56:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:29,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:29,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 15:56:29,389 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)] === [2024-06-21 15:56:29,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 834804739, now seen corresponding path program 16 times [2024-06-21 15:56:29,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184833849] [2024-06-21 15:56:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184833849] [2024-06-21 15:56:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184833849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 15:56:32,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760002279] [2024-06-21 15:56:32,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:32,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 15:56:32,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:32,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 15:56:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-21 15:56:33,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:33,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 184 transitions, 1239 flow. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:33,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:33,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:33,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:33,721 INFO L124 PetriNetUnfolderBase]: 575/1152 cut-off events. [2024-06-21 15:56:33,721 INFO L125 PetriNetUnfolderBase]: For 132103/132103 co-relation queries the response was YES. [2024-06-21 15:56:33,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4847 conditions, 1152 events. 575/1152 cut-off events. For 132103/132103 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6537 event pairs, 169 based on Foata normal form. 6/1157 useless extension candidates. Maximal degree in co-relation 4712. Up to 1037 conditions per place. [2024-06-21 15:56:33,731 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 16 changer transitions 14/213 dead transitions. [2024-06-21 15:56:33,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 213 transitions, 1732 flow [2024-06-21 15:56:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:33,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-21 15:56:33,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31490384615384615 [2024-06-21 15:56:33,732 INFO L175 Difference]: Start difference. First operand has 308 places, 184 transitions, 1239 flow. Second operand 13 states and 131 transitions. [2024-06-21 15:56:33,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 213 transitions, 1732 flow [2024-06-21 15:56:34,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 213 transitions, 1684 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-21 15:56:34,096 INFO L231 Difference]: Finished difference. Result has 306 places, 182 transitions, 1216 flow [2024-06-21 15:56:34,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1216, PETRI_PLACES=306, PETRI_TRANSITIONS=182} [2024-06-21 15:56:34,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-21 15:56:34,096 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 182 transitions, 1216 flow [2024-06-21 15:56:34,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:34,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:34,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:34,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 15:56:34,097 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)] === [2024-06-21 15:56:34,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash 664102309, now seen corresponding path program 17 times [2024-06-21 15:56:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:34,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632223598] [2024-06-21 15:56:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:34,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:38,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632223598] [2024-06-21 15:56:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632223598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:38,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:38,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:56:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253682633] [2024-06-21 15:56:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:38,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:56:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:56:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:56:38,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:38,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 182 transitions, 1216 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:38,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:38,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:38,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:38,872 INFO L124 PetriNetUnfolderBase]: 573/1150 cut-off events. [2024-06-21 15:56:38,873 INFO L125 PetriNetUnfolderBase]: For 132104/132104 co-relation queries the response was YES. [2024-06-21 15:56:38,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 1150 events. 573/1150 cut-off events. For 132104/132104 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6533 event pairs, 164 based on Foata normal form. 6/1155 useless extension candidates. Maximal degree in co-relation 4684. Up to 1035 conditions per place. [2024-06-21 15:56:38,883 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 14 changer transitions 17/212 dead transitions. [2024-06-21 15:56:38,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 212 transitions, 1711 flow [2024-06-21 15:56:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-21 15:56:38,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-21 15:56:38,884 INFO L175 Difference]: Start difference. First operand has 306 places, 182 transitions, 1216 flow. Second operand 13 states and 130 transitions. [2024-06-21 15:56:38,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 212 transitions, 1711 flow [2024-06-21 15:56:39,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 212 transitions, 1660 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 15:56:39,206 INFO L231 Difference]: Finished difference. Result has 305 places, 180 transitions, 1188 flow [2024-06-21 15:56:39,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1188, PETRI_PLACES=305, PETRI_TRANSITIONS=180} [2024-06-21 15:56:39,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-21 15:56:39,206 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 180 transitions, 1188 flow [2024-06-21 15:56:39,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:39,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 15:56:39,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 15:56:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 15:56:39,207 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)] === [2024-06-21 15:56:39,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 15:56:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 635138293, now seen corresponding path program 18 times [2024-06-21 15:56:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 15:56:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228655274] [2024-06-21 15:56:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 15:56:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 15:56:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 15:56:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 15:56:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 15:56:42,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228655274] [2024-06-21 15:56:42,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228655274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 15:56:42,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 15:56:42,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 15:56:42,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662202669] [2024-06-21 15:56:42,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 15:56:42,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 15:56:42,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 15:56:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 15:56:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-21 15:56:42,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-21 15:56:42,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 180 transitions, 1188 flow. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 15:56:42,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 15:56:42,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-21 15:56:42,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 15:56:43,450 INFO L124 PetriNetUnfolderBase]: 571/1148 cut-off events. [2024-06-21 15:56:43,451 INFO L125 PetriNetUnfolderBase]: For 132101/132101 co-relation queries the response was YES. [2024-06-21 15:56:43,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 1148 events. 571/1148 cut-off events. For 132101/132101 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6513 event pairs, 157 based on Foata normal form. 6/1153 useless extension candidates. Maximal degree in co-relation 4652. Up to 1033 conditions per place. [2024-06-21 15:56:43,462 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 11 changer transitions 24/211 dead transitions. [2024-06-21 15:56:43,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 211 transitions, 1685 flow [2024-06-21 15:56:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 15:56:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 15:56:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-06-21 15:56:43,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31009615384615385 [2024-06-21 15:56:43,463 INFO L175 Difference]: Start difference. First operand has 305 places, 180 transitions, 1188 flow. Second operand 13 states and 129 transitions. [2024-06-21 15:56:43,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 211 transitions, 1685 flow Killed by 15