./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix009.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix009.opt.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-76401ed-m [2024-06-20 15:49:00,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:49:00,893 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:49:00,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:49:00,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:49:00,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:49:00,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:49:00,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:49:00,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:49:00,938 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:49:00,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:49:00,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:49:00,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:49:00,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:49:00,940 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:49:00,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:49:00,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:49:00,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:49:00,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:49:00,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:49:00,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:49:00,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:49:00,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:49:00,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:49:00,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:49:00,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:49:00,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:49:00,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:49:00,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:49:00,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:49:00,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:49:00,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:49:00,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:49:00,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:49:00,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:49:00,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:49:00,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:49:00,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:49:00,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:49:00,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:49:00,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:49:00,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:49:00,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:49:00,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:49:01,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:49:01,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:49:01,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:49:01,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:49:01,200 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:49:01,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-20 15:49:02,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:49:02,536 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:49:02,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-20 15:49:02,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc81f77a/c6663ddd5bb046ddb9a33bbb24a12980/FLAGf5fc64f45 [2024-06-20 15:49:02,574 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc81f77a/c6663ddd5bb046ddb9a33bbb24a12980 [2024-06-20 15:49:02,576 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:49:02,577 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:49:02,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix009.opt.yml/witness.yml [2024-06-20 15:49:02,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:49:02,669 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:49:02,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:49:02,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:49:02,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:49:02,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:49:02" (1/2) ... [2024-06-20 15:49:02,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be91e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:49:02, skipping insertion in model container [2024-06-20 15:49:02,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:49:02" (1/2) ... [2024-06-20 15:49:02,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38626b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:49:02, skipping insertion in model container [2024-06-20 15:49:02,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:49:02" (2/2) ... [2024-06-20 15:49:02,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be91e44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:02, skipping insertion in model container [2024-06-20 15:49:02,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:49:02" (2/2) ... [2024-06-20 15:49:02,677 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:49:02,734 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:49:02,735 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:49:02,736 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:49:02,736 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:49:02,736 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-20 15:49:02,771 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:49:03,035 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:49:03,055 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:49:03,164 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:49:03,192 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:49:03,192 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03 WrapperNode [2024-06-20 15:49:03,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:49:03,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:49:03,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:49:03,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:49:03,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,248 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-20 15:49:03,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:49:03,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:49:03,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:49:03,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:49:03,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,281 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]. [2024-06-20 15:49:03,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:49:03,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:49:03,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:49:03,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:49:03,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (1/1) ... [2024-06-20 15:49:03,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:49:03,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:49:03,380 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) [2024-06-20 15:49:03,396 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 [2024-06-20 15:49:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 15:49:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:49:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 15:49:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 15:49:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 15:49:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 15:49:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:49:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 15:49:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:49:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:49:03,412 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:49:03,547 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:49:03,549 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:49:03,791 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:49:03,791 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:49:03,942 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:49:03,943 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 15:49:03,952 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:49:03 BoogieIcfgContainer [2024-06-20 15:49:03,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:49:03,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:49:03,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:49:03,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:49:03,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:49:02" (1/4) ... [2024-06-20 15:49:03,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4868da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:49:03, skipping insertion in model container [2024-06-20 15:49:03,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:49:02" (2/4) ... [2024-06-20 15:49:03,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4868da and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:49:03, skipping insertion in model container [2024-06-20 15:49:03,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:49:03" (3/4) ... [2024-06-20 15:49:03,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4868da and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:49:03, skipping insertion in model container [2024-06-20 15:49:03,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:49:03" (4/4) ... [2024-06-20 15:49:03,960 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-20 15:49:03,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:49:03,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 15:49:03,976 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:49:04,007 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 15:49:04,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-20 15:49:04,076 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-20 15:49:04,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:49:04,079 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 47 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. [2024-06-20 15:49:04,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-20 15:49:04,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-20 15:49:04,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:49:04,101 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;@7483315c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:49:04,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 15:49:04,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:49:04,105 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-20 15:49:04,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:49:04,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:04,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:49:04,106 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)] === [2024-06-20 15:49:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash 364831899, now seen corresponding path program 1 times [2024-06-20 15:49:04,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791572844] [2024-06-20 15:49:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:04,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791572844] [2024-06-20 15:49:04,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791572844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:04,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:49:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910366543] [2024-06-20 15:49:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:49:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:49:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:49:05,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-20 15:49:05,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:05,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:05,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-20 15:49:05,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:05,139 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-20 15:49:05,140 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-20 15:49:05,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1286 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-20 15:49:05,144 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-20 15:49:05,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-20 15:49:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:49:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:49:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-20 15:49:05,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-20 15:49:05,154 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-20 15:49:05,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-20 15:49:05,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:49:05,157 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-20 15:49:05,159 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} [2024-06-20 15:49:05,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-20 15:49:05,161 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-20 15:49:05,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:05,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:05,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:05,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:49:05,162 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)] === [2024-06-20 15:49:05,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1583835590, now seen corresponding path program 1 times [2024-06-20 15:49:05,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:05,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548369023] [2024-06-20 15:49:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548369023] [2024-06-20 15:49:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548369023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:05,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:05,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:49:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301086712] [2024-06-20 15:49:05,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:05,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:49:05,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:49:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:49:05,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-20 15:49:05,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2024-06-20 15:49:05,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:05,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-20 15:49:05,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:05,804 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-20 15:49:05,804 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-20 15:49:05,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 346 events. 186/346 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1381 event pairs, 94 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 776. Up to 319 conditions per place. [2024-06-20 15:49:05,819 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-20 15:49:05,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 161 flow [2024-06-20 15:49:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:49:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:49:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-20 15:49:05,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-20 15:49:05,821 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 73 transitions. [2024-06-20 15:49:05,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 161 flow [2024-06-20 15:49:05,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:49:05,822 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-20 15:49:05,823 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} [2024-06-20 15:49:05,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-20 15:49:05,823 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-20 15:49:05,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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) [2024-06-20 15:49:05,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:05,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:05,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:49:05,824 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)] === [2024-06-20 15:49:05,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1854262106, now seen corresponding path program 1 times [2024-06-20 15:49:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:05,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504551896] [2024-06-20 15:49:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:06,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504551896] [2024-06-20 15:49:06,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504551896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:06,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:06,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:49:06,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164982308] [2024-06-20 15:49:06,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:06,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:49:06,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:06,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:49:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:49:06,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-20 15:49:06,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2024-06-20 15:49:06,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:06,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-20 15:49:06,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:06,527 INFO L124 PetriNetUnfolderBase]: 219/397 cut-off events. [2024-06-20 15:49:06,527 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-20 15:49:06,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 397 events. 219/397 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1503 event pairs, 99 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 989. Up to 366 conditions per place. [2024-06-20 15:49:06,530 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-20 15:49:06,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-20 15:49:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:49:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:49:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-20 15:49:06,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-20 15:49:06,532 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-20 15:49:06,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-20 15:49:06,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 15:49:06,534 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-20 15:49:06,534 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} [2024-06-20 15:49:06,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-20 15:49:06,534 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-20 15:49:06,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2024-06-20 15:49:06,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:06,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:06,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:49:06,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:06,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:06,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1592138219, now seen corresponding path program 1 times [2024-06-20 15:49:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:06,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085868676] [2024-06-20 15:49:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:06,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:07,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:07,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085868676] [2024-06-20 15:49:07,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085868676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:07,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:07,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:49:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447001003] [2024-06-20 15:49:07,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:07,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:49:07,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:07,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:49:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:49:07,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-20 15:49:07,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:07,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:07,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-20 15:49:07,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:07,319 INFO L124 PetriNetUnfolderBase]: 213/387 cut-off events. [2024-06-20 15:49:07,319 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-06-20 15:49:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 387 events. 213/387 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1454 event pairs, 57 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1048. Up to 338 conditions per place. [2024-06-20 15:49:07,322 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-20 15:49:07,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 263 flow [2024-06-20 15:49:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:49:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:49:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-20 15:49:07,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-20 15:49:07,323 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 101 transitions. [2024-06-20 15:49:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 263 flow [2024-06-20 15:49:07,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 248 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 15:49:07,325 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-20 15:49:07,325 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=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-20 15:49:07,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-20 15:49:07,326 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-20 15:49:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:07,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:07,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:07,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:49:07,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:07,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 22408742, now seen corresponding path program 1 times [2024-06-20 15:49:07,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:07,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631170853] [2024-06-20 15:49:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:07,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:07,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:07,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631170853] [2024-06-20 15:49:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631170853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:07,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:49:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071013753] [2024-06-20 15:49:07,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:07,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:49:07,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:07,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:49:07,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:49:07,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-20 15:49:07,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-06-20 15:49:07,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:07,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-20 15:49:07,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:08,121 INFO L124 PetriNetUnfolderBase]: 165/333 cut-off events. [2024-06-20 15:49:08,121 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-06-20 15:49:08,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 333 events. 165/333 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1320 event pairs, 61 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 946. Up to 291 conditions per place. [2024-06-20 15:49:08,123 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-06-20 15:49:08,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 229 flow [2024-06-20 15:49:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:49:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:49:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-20 15:49:08,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-20 15:49:08,125 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 74 transitions. [2024-06-20 15:49:08,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 229 flow [2024-06-20 15:49:08,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 208 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 15:49:08,127 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 151 flow [2024-06-20 15:49:08,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-20 15:49:08,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-20 15:49:08,128 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 151 flow [2024-06-20 15:49:08,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-06-20 15:49:08,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:08,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 15:49:08,128 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)] === [2024-06-20 15:49:08,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 694672028, now seen corresponding path program 1 times [2024-06-20 15:49:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371907184] [2024-06-20 15:49:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371907184] [2024-06-20 15:49:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371907184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:08,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:08,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:49:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272461687] [2024-06-20 15:49:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:49:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:49:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:49:09,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-20 15:49:09,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:09,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:09,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-20 15:49:09,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:09,180 INFO L124 PetriNetUnfolderBase]: 163/330 cut-off events. [2024-06-20 15:49:09,181 INFO L125 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2024-06-20 15:49:09,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 330 events. 163/330 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1300 event pairs, 60 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 977. Up to 285 conditions per place. [2024-06-20 15:49:09,183 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-20 15:49:09,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 245 flow [2024-06-20 15:49:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:49:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:49:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-20 15:49:09,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-20 15:49:09,184 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 151 flow. Second operand 6 states and 86 transitions. [2024-06-20 15:49:09,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 245 flow [2024-06-20 15:49:09,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 234 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 15:49:09,186 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 173 flow [2024-06-20 15:49:09,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-20 15:49:09,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-20 15:49:09,187 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 173 flow [2024-06-20 15:49:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:09,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:09,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:09,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 15:49:09,188 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)] === [2024-06-20 15:49:09,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash 459579635, now seen corresponding path program 1 times [2024-06-20 15:49:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361396555] [2024-06-20 15:49:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:09,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361396555] [2024-06-20 15:49:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361396555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:09,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:09,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:49:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919495600] [2024-06-20 15:49:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:09,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:49:09,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:49:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:49:09,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:09,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:09,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:09,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:09,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:10,025 INFO L124 PetriNetUnfolderBase]: 193/366 cut-off events. [2024-06-20 15:49:10,025 INFO L125 PetriNetUnfolderBase]: For 913/913 co-relation queries the response was YES. [2024-06-20 15:49:10,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 366 events. 193/366 cut-off events. For 913/913 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1398 event pairs, 71 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1189. Up to 331 conditions per place. [2024-06-20 15:49:10,027 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-20 15:49:10,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 287 flow [2024-06-20 15:49:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:49:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:49:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-20 15:49:10,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-20 15:49:10,028 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 173 flow. Second operand 6 states and 84 transitions. [2024-06-20 15:49:10,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 287 flow [2024-06-20 15:49:10,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 270 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:49:10,030 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 189 flow [2024-06-20 15:49:10,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-20 15:49:10,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-20 15:49:10,031 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 189 flow [2024-06-20 15:49:10,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:10,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:10,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:10,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 15:49:10,032 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)] === [2024-06-20 15:49:10,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash 59987525, now seen corresponding path program 2 times [2024-06-20 15:49:10,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:10,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632592147] [2024-06-20 15:49:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:10,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:10,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:10,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632592147] [2024-06-20 15:49:10,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632592147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:10,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:10,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:49:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717632739] [2024-06-20 15:49:10,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:10,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:49:10,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:49:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:49:10,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:10,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:10,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:10,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:10,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:10,825 INFO L124 PetriNetUnfolderBase]: 191/364 cut-off events. [2024-06-20 15:49:10,825 INFO L125 PetriNetUnfolderBase]: For 1196/1202 co-relation queries the response was YES. [2024-06-20 15:49:10,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 364 events. 191/364 cut-off events. For 1196/1202 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1419 event pairs, 75 based on Foata normal form. 5/366 useless extension candidates. Maximal degree in co-relation 1249. Up to 322 conditions per place. [2024-06-20 15:49:10,827 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-20 15:49:10,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 297 flow [2024-06-20 15:49:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:49:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:49:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-20 15:49:10,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-20 15:49:10,829 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 189 flow. Second operand 6 states and 83 transitions. [2024-06-20 15:49:10,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 297 flow [2024-06-20 15:49:10,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 280 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:49:10,831 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 215 flow [2024-06-20 15:49:10,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-20 15:49:10,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-20 15:49:10,832 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 215 flow [2024-06-20 15:49:10,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:10,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:10,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:10,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 15:49:10,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:10,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash 501071554, now seen corresponding path program 1 times [2024-06-20 15:49:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:10,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000176093] [2024-06-20 15:49:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:10,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:11,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000176093] [2024-06-20 15:49:11,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000176093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:11,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:11,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:49:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462498209] [2024-06-20 15:49:11,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:11,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:49:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:49:11,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:49:11,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-20 15:49:11,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 215 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-20 15:49:11,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:11,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-20 15:49:11,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:11,900 INFO L124 PetriNetUnfolderBase]: 204/372 cut-off events. [2024-06-20 15:49:11,900 INFO L125 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2024-06-20 15:49:11,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 372 events. 204/372 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1360 event pairs, 31 based on Foata normal form. 4/374 useless extension candidates. Maximal degree in co-relation 1334. Up to 305 conditions per place. [2024-06-20 15:49:11,903 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-20 15:49:11,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 383 flow [2024-06-20 15:49:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-20 15:49:11,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828125 [2024-06-20 15:49:11,904 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 215 flow. Second operand 8 states and 125 transitions. [2024-06-20 15:49:11,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 383 flow [2024-06-20 15:49:11,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-20 15:49:11,907 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 217 flow [2024-06-20 15:49:11,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-20 15:49:11,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-20 15:49:11,907 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 217 flow [2024-06-20 15:49:11,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-20 15:49:11,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:11,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:11,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 15:49:11,908 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)] === [2024-06-20 15:49:11,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:11,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1361888085, now seen corresponding path program 1 times [2024-06-20 15:49:11,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:11,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227662283] [2024-06-20 15:49:11,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:12,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227662283] [2024-06-20 15:49:12,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227662283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:12,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:12,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:49:12,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416927483] [2024-06-20 15:49:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:12,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:49:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:49:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:49:12,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:12,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:12,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:12,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:12,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:12,887 INFO L124 PetriNetUnfolderBase]: 207/377 cut-off events. [2024-06-20 15:49:12,887 INFO L125 PetriNetUnfolderBase]: For 1770/1770 co-relation queries the response was YES. [2024-06-20 15:49:12,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 377 events. 207/377 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1382 event pairs, 48 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1431. Up to 343 conditions per place. [2024-06-20 15:49:12,889 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-20 15:49:12,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 367 flow [2024-06-20 15:49:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:49:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:49:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-20 15:49:12,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:12,891 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 217 flow. Second operand 7 states and 91 transitions. [2024-06-20 15:49:12,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 367 flow [2024-06-20 15:49:12,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 339 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:12,894 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 230 flow [2024-06-20 15:49:12,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=230, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-20 15:49:12,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-20 15:49:12,897 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 230 flow [2024-06-20 15:49:12,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:12,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:12,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:12,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 15:49:12,898 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)] === [2024-06-20 15:49:12,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:12,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1362067575, now seen corresponding path program 2 times [2024-06-20 15:49:12,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:12,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488018986] [2024-06-20 15:49:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:13,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488018986] [2024-06-20 15:49:13,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488018986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:13,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:13,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:49:13,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827030252] [2024-06-20 15:49:13,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:49:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:49:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:49:13,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:13,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:13,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:13,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:13,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:13,752 INFO L124 PetriNetUnfolderBase]: 210/382 cut-off events. [2024-06-20 15:49:13,753 INFO L125 PetriNetUnfolderBase]: For 2161/2161 co-relation queries the response was YES. [2024-06-20 15:49:13,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 382 events. 210/382 cut-off events. For 2161/2161 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1409 event pairs, 48 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1508. Up to 342 conditions per place. [2024-06-20 15:49:13,755 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-20 15:49:13,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 374 flow [2024-06-20 15:49:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:49:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:49:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-20 15:49:13,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-20 15:49:13,757 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 230 flow. Second operand 7 states and 90 transitions. [2024-06-20 15:49:13,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 374 flow [2024-06-20 15:49:13,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 349 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:13,760 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 256 flow [2024-06-20 15:49:13,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-20 15:49:13,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-20 15:49:13,761 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 256 flow [2024-06-20 15:49:13,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:13,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:13,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:13,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 15:49:13,762 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)] === [2024-06-20 15:49:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1623438941, now seen corresponding path program 1 times [2024-06-20 15:49:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448229764] [2024-06-20 15:49:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:14,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448229764] [2024-06-20 15:49:14,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448229764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:14,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:14,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:49:14,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902083348] [2024-06-20 15:49:14,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:14,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:49:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:49:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:49:14,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:14,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-20 15:49:14,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:14,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:14,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:14,863 INFO L124 PetriNetUnfolderBase]: 200/374 cut-off events. [2024-06-20 15:49:14,864 INFO L125 PetriNetUnfolderBase]: For 2574/2574 co-relation queries the response was YES. [2024-06-20 15:49:14,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 374 events. 200/374 cut-off events. For 2574/2574 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1403 event pairs, 47 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 1523. Up to 328 conditions per place. [2024-06-20 15:49:14,866 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 40 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-20 15:49:14,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 390 flow [2024-06-20 15:49:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:49:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:49:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-20 15:49:14,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-20 15:49:14,867 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 256 flow. Second operand 7 states and 94 transitions. [2024-06-20 15:49:14,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 390 flow [2024-06-20 15:49:14,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 355 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:14,870 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 260 flow [2024-06-20 15:49:14,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-20 15:49:14,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-20 15:49:14,871 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 260 flow [2024-06-20 15:49:14,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-20 15:49:14,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:14,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:14,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 15:49:14,872 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)] === [2024-06-20 15:49:14,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash 137702471, now seen corresponding path program 3 times [2024-06-20 15:49:14,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:14,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145188727] [2024-06-20 15:49:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:14,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:15,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145188727] [2024-06-20 15:49:15,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145188727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:15,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:15,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:49:15,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829927088] [2024-06-20 15:49:15,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:15,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:49:15,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:49:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:49:15,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:15,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:15,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:15,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:15,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:15,757 INFO L124 PetriNetUnfolderBase]: 211/385 cut-off events. [2024-06-20 15:49:15,758 INFO L125 PetriNetUnfolderBase]: For 2971/2974 co-relation queries the response was YES. [2024-06-20 15:49:15,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 385 events. 211/385 cut-off events. For 2971/2974 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1419 event pairs, 55 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 1632. Up to 335 conditions per place. [2024-06-20 15:49:15,760 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-20 15:49:15,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 402 flow [2024-06-20 15:49:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:49:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:49:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-20 15:49:15,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-20 15:49:15,761 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 260 flow. Second operand 7 states and 89 transitions. [2024-06-20 15:49:15,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 402 flow [2024-06-20 15:49:15,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 379 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:15,764 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 300 flow [2024-06-20 15:49:15,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-20 15:49:15,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-20 15:49:15,765 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 300 flow [2024-06-20 15:49:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:15,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:15,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 15:49:15,766 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)] === [2024-06-20 15:49:15,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1859614301, now seen corresponding path program 2 times [2024-06-20 15:49:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313247608] [2024-06-20 15:49:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:16,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313247608] [2024-06-20 15:49:16,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313247608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:16,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:16,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:49:16,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016355232] [2024-06-20 15:49:16,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:16,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:49:16,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:16,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:49:16,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:49:16,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:16,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-20 15:49:16,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:16,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:16,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:16,881 INFO L124 PetriNetUnfolderBase]: 201/377 cut-off events. [2024-06-20 15:49:16,881 INFO L125 PetriNetUnfolderBase]: For 3380/3383 co-relation queries the response was YES. [2024-06-20 15:49:16,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 377 events. 201/377 cut-off events. For 3380/3383 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1425 event pairs, 51 based on Foata normal form. 3/377 useless extension candidates. Maximal degree in co-relation 1646. Up to 325 conditions per place. [2024-06-20 15:49:16,884 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-06-20 15:49:16,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 430 flow [2024-06-20 15:49:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:49:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:49:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-20 15:49:16,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-20 15:49:16,885 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 300 flow. Second operand 7 states and 93 transitions. [2024-06-20 15:49:16,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 430 flow [2024-06-20 15:49:16,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 383 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:16,889 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 302 flow [2024-06-20 15:49:16,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-20 15:49:16,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-20 15:49:16,889 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 302 flow [2024-06-20 15:49:16,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-20 15:49:16,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:16,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:16,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 15:49:16,890 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)] === [2024-06-20 15:49:16,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1859910971, now seen corresponding path program 3 times [2024-06-20 15:49:16,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:16,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62987407] [2024-06-20 15:49:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:16,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:17,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:17,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62987407] [2024-06-20 15:49:17,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62987407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:17,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:17,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:49:17,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63520774] [2024-06-20 15:49:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:49:17,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:49:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:49:17,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:17,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-20 15:49:17,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:17,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:17,866 INFO L124 PetriNetUnfolderBase]: 199/374 cut-off events. [2024-06-20 15:49:17,866 INFO L125 PetriNetUnfolderBase]: For 3748/3751 co-relation queries the response was YES. [2024-06-20 15:49:17,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 374 events. 199/374 cut-off events. For 3748/3751 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1411 event pairs, 51 based on Foata normal form. 3/374 useless extension candidates. Maximal degree in co-relation 1673. Up to 313 conditions per place. [2024-06-20 15:49:17,868 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-06-20 15:49:17,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 454 flow [2024-06-20 15:49:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:49:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:49:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-20 15:49:17,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-20 15:49:17,869 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 302 flow. Second operand 7 states and 94 transitions. [2024-06-20 15:49:17,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 454 flow [2024-06-20 15:49:17,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 421 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:17,872 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 353 flow [2024-06-20 15:49:17,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-20 15:49:17,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-20 15:49:17,873 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 353 flow [2024-06-20 15:49:17,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-20 15:49:17,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:17,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:17,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 15:49:17,874 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)] === [2024-06-20 15:49:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1859921883, now seen corresponding path program 1 times [2024-06-20 15:49:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345705571] [2024-06-20 15:49:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:17,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:19,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345705571] [2024-06-20 15:49:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345705571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:19,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:19,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460807543] [2024-06-20 15:49:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:19,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:19,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:19,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:19,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 353 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:19,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:19,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:19,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:19,469 INFO L124 PetriNetUnfolderBase]: 196/369 cut-off events. [2024-06-20 15:49:19,470 INFO L125 PetriNetUnfolderBase]: For 4221/4221 co-relation queries the response was YES. [2024-06-20 15:49:19,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 369 events. 196/369 cut-off events. For 4221/4221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1399 event pairs, 46 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1726. Up to 328 conditions per place. [2024-06-20 15:49:19,472 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 45 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-20 15:49:19,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 495 flow [2024-06-20 15:49:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:49:19,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-20 15:49:19,474 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 353 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:49:19,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 495 flow [2024-06-20 15:49:19,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 468 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 15:49:19,477 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 369 flow [2024-06-20 15:49:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=369, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-20 15:49:19,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-20 15:49:19,478 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 369 flow [2024-06-20 15:49:19,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:19,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:19,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:19,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 15:49:19,479 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)] === [2024-06-20 15:49:19,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash -731291246, now seen corresponding path program 1 times [2024-06-20 15:49:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613513034] [2024-06-20 15:49:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:20,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613513034] [2024-06-20 15:49:20,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613513034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:20,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:20,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668899482] [2024-06-20 15:49:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:20,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:20,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:20,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 369 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:20,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:20,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:20,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:20,470 INFO L124 PetriNetUnfolderBase]: 216/395 cut-off events. [2024-06-20 15:49:20,470 INFO L125 PetriNetUnfolderBase]: For 4928/4928 co-relation queries the response was YES. [2024-06-20 15:49:20,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1963 conditions, 395 events. 216/395 cut-off events. For 4928/4928 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1478 event pairs, 45 based on Foata normal form. 2/395 useless extension candidates. Maximal degree in co-relation 1930. Up to 347 conditions per place. [2024-06-20 15:49:20,473 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 62 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-20 15:49:20,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 581 flow [2024-06-20 15:49:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-20 15:49:20,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-20 15:49:20,474 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 369 flow. Second operand 8 states and 105 transitions. [2024-06-20 15:49:20,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 581 flow [2024-06-20 15:49:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 532 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:20,478 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 371 flow [2024-06-20 15:49:20,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=371, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-06-20 15:49:20,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-20 15:49:20,478 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 371 flow [2024-06-20 15:49:20,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:20,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:20,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:20,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 15:49:20,479 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)] === [2024-06-20 15:49:20,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571450, now seen corresponding path program 2 times [2024-06-20 15:49:20,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:20,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057241923] [2024-06-20 15:49:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:20,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057241923] [2024-06-20 15:49:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057241923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:21,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412104097] [2024-06-20 15:49:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:21,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:21,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:21,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:21,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 371 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:21,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:21,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:21,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:21,439 INFO L124 PetriNetUnfolderBase]: 222/407 cut-off events. [2024-06-20 15:49:21,439 INFO L125 PetriNetUnfolderBase]: For 5633/5633 co-relation queries the response was YES. [2024-06-20 15:49:21,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 407 events. 222/407 cut-off events. For 5633/5633 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1540 event pairs, 45 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 2042. Up to 348 conditions per place. [2024-06-20 15:49:21,442 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-20 15:49:21,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 583 flow [2024-06-20 15:49:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:21,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-20 15:49:21,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-20 15:49:21,443 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 371 flow. Second operand 8 states and 105 transitions. [2024-06-20 15:49:21,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 583 flow [2024-06-20 15:49:21,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 548 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:21,447 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 397 flow [2024-06-20 15:49:21,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-06-20 15:49:21,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-20 15:49:21,448 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 397 flow [2024-06-20 15:49:21,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:21,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:21,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:21,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 15:49:21,450 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)] === [2024-06-20 15:49:21,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:21,450 INFO L85 PathProgramCache]: Analyzing trace with hash -731141299, now seen corresponding path program 1 times [2024-06-20 15:49:21,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:21,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017570571] [2024-06-20 15:49:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:21,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:22,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:22,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017570571] [2024-06-20 15:49:22,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017570571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:22,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:22,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:22,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466339650] [2024-06-20 15:49:22,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:22,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:22,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:22,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:22,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:22,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:22,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:22,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:22,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:22,603 INFO L124 PetriNetUnfolderBase]: 225/412 cut-off events. [2024-06-20 15:49:22,604 INFO L125 PetriNetUnfolderBase]: For 6176/6176 co-relation queries the response was YES. [2024-06-20 15:49:22,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 412 events. 225/412 cut-off events. For 6176/6176 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1580 event pairs, 44 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2118. Up to 371 conditions per place. [2024-06-20 15:49:22,606 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-20 15:49:22,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 597 flow [2024-06-20 15:49:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 15:49:22,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-20 15:49:22,608 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 397 flow. Second operand 8 states and 101 transitions. [2024-06-20 15:49:22,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 597 flow [2024-06-20 15:49:22,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 552 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:22,612 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 403 flow [2024-06-20 15:49:22,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=403, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2024-06-20 15:49:22,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-20 15:49:22,613 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 403 flow [2024-06-20 15:49:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:22,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:22,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:22,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 15:49:22,614 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)] === [2024-06-20 15:49:22,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:22,614 INFO L85 PathProgramCache]: Analyzing trace with hash -725569390, now seen corresponding path program 1 times [2024-06-20 15:49:22,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974390524] [2024-06-20 15:49:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:22,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:23,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:23,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974390524] [2024-06-20 15:49:23,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974390524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:23,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:23,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:23,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958348440] [2024-06-20 15:49:23,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:23,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:23,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:23,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:23,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:23,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:23,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 403 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:23,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:23,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:23,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:23,685 INFO L124 PetriNetUnfolderBase]: 217/408 cut-off events. [2024-06-20 15:49:23,685 INFO L125 PetriNetUnfolderBase]: For 6788/6788 co-relation queries the response was YES. [2024-06-20 15:49:23,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 408 events. 217/408 cut-off events. For 6788/6788 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1599 event pairs, 43 based on Foata normal form. 2/408 useless extension candidates. Maximal degree in co-relation 2105. Up to 350 conditions per place. [2024-06-20 15:49:23,688 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 56 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-20 15:49:23,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 587 flow [2024-06-20 15:49:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:23,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-20 15:49:23,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-20 15:49:23,689 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 403 flow. Second operand 8 states and 106 transitions. [2024-06-20 15:49:23,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 587 flow [2024-06-20 15:49:23,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 552 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:23,694 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 419 flow [2024-06-20 15:49:23,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=419, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-20 15:49:23,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-20 15:49:23,695 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 419 flow [2024-06-20 15:49:23,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:23,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:23,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:23,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 15:49:23,695 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)] === [2024-06-20 15:49:23,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash -725569669, now seen corresponding path program 2 times [2024-06-20 15:49:23,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:23,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287910334] [2024-06-20 15:49:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:24,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287910334] [2024-06-20 15:49:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287910334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:24,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:24,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:24,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499076425] [2024-06-20 15:49:24,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:24,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:24,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:24,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:24,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:24,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 419 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:24,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:24,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:24,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:24,782 INFO L124 PetriNetUnfolderBase]: 239/435 cut-off events. [2024-06-20 15:49:24,782 INFO L125 PetriNetUnfolderBase]: For 7580/7580 co-relation queries the response was YES. [2024-06-20 15:49:24,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 435 events. 239/435 cut-off events. For 7580/7580 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1678 event pairs, 43 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2344. Up to 378 conditions per place. [2024-06-20 15:49:24,785 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 20 changer transitions 0/81 dead transitions. [2024-06-20 15:49:24,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 687 flow [2024-06-20 15:49:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:49:24,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-20 15:49:24,786 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 419 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:49:24,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 687 flow [2024-06-20 15:49:24,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 652 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:24,791 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 477 flow [2024-06-20 15:49:24,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-20 15:49:24,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-20 15:49:24,792 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 477 flow [2024-06-20 15:49:24,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:24,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:24,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:24,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 15:49:24,793 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)] === [2024-06-20 15:49:24,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash -725577326, now seen corresponding path program 3 times [2024-06-20 15:49:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:24,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280977709] [2024-06-20 15:49:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280977709] [2024-06-20 15:49:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280977709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:25,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961982796] [2024-06-20 15:49:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:25,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:25,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:25,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:25,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:25,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 477 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:25,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:25,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:25,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:25,759 INFO L124 PetriNetUnfolderBase]: 245/447 cut-off events. [2024-06-20 15:49:25,759 INFO L125 PetriNetUnfolderBase]: For 8729/8729 co-relation queries the response was YES. [2024-06-20 15:49:25,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 447 events. 245/447 cut-off events. For 8729/8729 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1748 event pairs, 43 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2468. Up to 374 conditions per place. [2024-06-20 15:49:25,762 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 62 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-20 15:49:25,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 699 flow [2024-06-20 15:49:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-20 15:49:25,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:25,763 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 477 flow. Second operand 8 states and 104 transitions. [2024-06-20 15:49:25,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 699 flow [2024-06-20 15:49:25,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 665 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 15:49:25,769 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 516 flow [2024-06-20 15:49:25,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=516, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-06-20 15:49:25,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-20 15:49:25,770 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 516 flow [2024-06-20 15:49:25,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:25,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:25,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:25,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 15:49:25,771 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)] === [2024-06-20 15:49:25,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:25,771 INFO L85 PathProgramCache]: Analyzing trace with hash -725577109, now seen corresponding path program 3 times [2024-06-20 15:49:25,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:25,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287703878] [2024-06-20 15:49:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:25,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:26,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287703878] [2024-06-20 15:49:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287703878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869789921] [2024-06-20 15:49:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:26,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:26,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 516 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:26,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:26,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:26,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:26,850 INFO L124 PetriNetUnfolderBase]: 243/444 cut-off events. [2024-06-20 15:49:26,850 INFO L125 PetriNetUnfolderBase]: For 9091/9091 co-relation queries the response was YES. [2024-06-20 15:49:26,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 444 events. 243/444 cut-off events. For 9091/9091 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1725 event pairs, 43 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 2520. Up to 395 conditions per place. [2024-06-20 15:49:26,853 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2024-06-20 15:49:26,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 700 flow [2024-06-20 15:49:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-20 15:49:26,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:49:26,854 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 516 flow. Second operand 8 states and 100 transitions. [2024-06-20 15:49:26,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 700 flow [2024-06-20 15:49:26,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 633 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:26,861 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 484 flow [2024-06-20 15:49:26,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=484, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2024-06-20 15:49:26,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-20 15:49:26,862 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 484 flow [2024-06-20 15:49:26,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:26,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:26,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:26,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 15:49:26,862 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)] === [2024-06-20 15:49:26,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461821, now seen corresponding path program 4 times [2024-06-20 15:49:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766183052] [2024-06-20 15:49:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766183052] [2024-06-20 15:49:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766183052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:27,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:27,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214561320] [2024-06-20 15:49:27,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:27,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:27,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:27,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 484 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:27,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:27,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:27,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:28,043 INFO L124 PetriNetUnfolderBase]: 246/450 cut-off events. [2024-06-20 15:49:28,043 INFO L125 PetriNetUnfolderBase]: For 9735/9738 co-relation queries the response was YES. [2024-06-20 15:49:28,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572 conditions, 450 events. 246/450 cut-off events. For 9735/9738 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1755 event pairs, 51 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2532. Up to 391 conditions per place. [2024-06-20 15:49:28,047 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-06-20 15:49:28,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 684 flow [2024-06-20 15:49:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:28,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-20 15:49:28,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-20 15:49:28,050 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 484 flow. Second operand 8 states and 99 transitions. [2024-06-20 15:49:28,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 684 flow [2024-06-20 15:49:28,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 640 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:28,059 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 513 flow [2024-06-20 15:49:28,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=513, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-20 15:49:28,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-20 15:49:28,060 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 513 flow [2024-06-20 15:49:28,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:28,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:28,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:28,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 15:49:28,061 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)] === [2024-06-20 15:49:28,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:28,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461604, now seen corresponding path program 4 times [2024-06-20 15:49:28,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:28,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608148310] [2024-06-20 15:49:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:28,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:28,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:28,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608148310] [2024-06-20 15:49:28,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608148310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:28,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:28,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:28,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065956206] [2024-06-20 15:49:28,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:28,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:28,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:28,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:28,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:28,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:28,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:28,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:28,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:28,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:29,055 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2024-06-20 15:49:29,057 INFO L125 PetriNetUnfolderBase]: For 10693/10696 co-relation queries the response was YES. [2024-06-20 15:49:29,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 454 events. 247/454 cut-off events. For 10693/10696 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1796 event pairs, 55 based on Foata normal form. 2/453 useless extension candidates. Maximal degree in co-relation 2592. Up to 363 conditions per place. [2024-06-20 15:49:29,061 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 58 selfloop transitions, 24 changer transitions 0/85 dead transitions. [2024-06-20 15:49:29,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 733 flow [2024-06-20 15:49:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 15:49:29,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-20 15:49:29,062 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 513 flow. Second operand 8 states and 103 transitions. [2024-06-20 15:49:29,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 733 flow [2024-06-20 15:49:29,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 676 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:29,070 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 543 flow [2024-06-20 15:49:29,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=543, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-06-20 15:49:29,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-20 15:49:29,071 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 543 flow [2024-06-20 15:49:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:29,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:29,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 15:49:29,072 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)] === [2024-06-20 15:49:29,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469261, now seen corresponding path program 5 times [2024-06-20 15:49:29,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:29,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700913540] [2024-06-20 15:49:29,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:29,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700913540] [2024-06-20 15:49:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700913540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:29,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:29,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:29,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160509508] [2024-06-20 15:49:29,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:29,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:29,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:29,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:29,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:29,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:29,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:29,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:30,105 INFO L124 PetriNetUnfolderBase]: 250/459 cut-off events. [2024-06-20 15:49:30,105 INFO L125 PetriNetUnfolderBase]: For 11333/11336 co-relation queries the response was YES. [2024-06-20 15:49:30,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 459 events. 250/459 cut-off events. For 11333/11336 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1810 event pairs, 51 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 2693. Up to 392 conditions per place. [2024-06-20 15:49:30,109 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2024-06-20 15:49:30,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 755 flow [2024-06-20 15:49:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 15:49:30,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-20 15:49:30,111 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 543 flow. Second operand 8 states and 101 transitions. [2024-06-20 15:49:30,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 755 flow [2024-06-20 15:49:30,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 684 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:30,119 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 555 flow [2024-06-20 15:49:30,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=555, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-06-20 15:49:30,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-20 15:49:30,120 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 555 flow [2024-06-20 15:49:30,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:30,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:30,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 15:49:30,121 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)] === [2024-06-20 15:49:30,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:30,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469540, now seen corresponding path program 2 times [2024-06-20 15:49:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648616024] [2024-06-20 15:49:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:30,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:30,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648616024] [2024-06-20 15:49:30,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648616024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:30,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899002123] [2024-06-20 15:49:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:30,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:30,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:31,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:31,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 555 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:31,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:31,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:31,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:31,205 INFO L124 PetriNetUnfolderBase]: 238/449 cut-off events. [2024-06-20 15:49:31,205 INFO L125 PetriNetUnfolderBase]: For 11775/11778 co-relation queries the response was YES. [2024-06-20 15:49:31,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 449 events. 238/449 cut-off events. For 11775/11778 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1823 event pairs, 46 based on Foata normal form. 3/449 useless extension candidates. Maximal degree in co-relation 2609. Up to 375 conditions per place. [2024-06-20 15:49:31,208 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-06-20 15:49:31,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 741 flow [2024-06-20 15:49:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-20 15:49:31,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:31,210 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 555 flow. Second operand 8 states and 104 transitions. [2024-06-20 15:49:31,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 741 flow [2024-06-20 15:49:31,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 674 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:31,216 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 547 flow [2024-06-20 15:49:31,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=547, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-06-20 15:49:31,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-20 15:49:31,217 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 547 flow [2024-06-20 15:49:31,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:31,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:31,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:31,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 15:49:31,218 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)] === [2024-06-20 15:49:31,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash -16985180, now seen corresponding path program 3 times [2024-06-20 15:49:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:31,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76993379] [2024-06-20 15:49:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:31,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:32,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76993379] [2024-06-20 15:49:32,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76993379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:32,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:32,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:32,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150111996] [2024-06-20 15:49:32,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:32,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:32,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:32,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:32,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 547 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:32,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:32,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:32,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:32,311 INFO L124 PetriNetUnfolderBase]: 249/467 cut-off events. [2024-06-20 15:49:32,311 INFO L125 PetriNetUnfolderBase]: For 13294/13297 co-relation queries the response was YES. [2024-06-20 15:49:32,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 467 events. 249/467 cut-off events. For 13294/13297 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1911 event pairs, 47 based on Foata normal form. 4/468 useless extension candidates. Maximal degree in co-relation 2774. Up to 351 conditions per place. [2024-06-20 15:49:32,315 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2024-06-20 15:49:32,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 937 flow [2024-06-20 15:49:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-20 15:49:32,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-20 15:49:32,316 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 547 flow. Second operand 8 states and 112 transitions. [2024-06-20 15:49:32,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 937 flow [2024-06-20 15:49:32,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 894 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:32,325 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 639 flow [2024-06-20 15:49:32,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=639, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-06-20 15:49:32,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-20 15:49:32,326 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 639 flow [2024-06-20 15:49:32,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:32,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:32,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 15:49:32,326 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)] === [2024-06-20 15:49:32,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666031, now seen corresponding path program 6 times [2024-06-20 15:49:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:32,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399591837] [2024-06-20 15:49:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:32,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:33,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399591837] [2024-06-20 15:49:33,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399591837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:33,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:33,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794100422] [2024-06-20 15:49:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:33,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:33,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:33,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 639 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:33,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:33,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:33,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:33,450 INFO L124 PetriNetUnfolderBase]: 262/479 cut-off events. [2024-06-20 15:49:33,451 INFO L125 PetriNetUnfolderBase]: For 13914/13917 co-relation queries the response was YES. [2024-06-20 15:49:33,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2977 conditions, 479 events. 262/479 cut-off events. For 13914/13917 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1915 event pairs, 50 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2932. Up to 391 conditions per place. [2024-06-20 15:49:33,457 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 33 changer transitions 0/95 dead transitions. [2024-06-20 15:49:33,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 875 flow [2024-06-20 15:49:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 15:49:33,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-20 15:49:33,458 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 639 flow. Second operand 8 states and 101 transitions. [2024-06-20 15:49:33,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 875 flow [2024-06-20 15:49:33,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 844 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-20 15:49:33,469 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 717 flow [2024-06-20 15:49:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=717, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2024-06-20 15:49:33,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-20 15:49:33,470 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 717 flow [2024-06-20 15:49:33,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2024-06-20 15:49:33,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:33,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:33,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 15:49:33,470 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)] === [2024-06-20 15:49:33,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:33,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1822992740, now seen corresponding path program 4 times [2024-06-20 15:49:33,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:33,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011893760] [2024-06-20 15:49:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:33,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:34,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011893760] [2024-06-20 15:49:34,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011893760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:34,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:34,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:49:34,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373313329] [2024-06-20 15:49:34,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:34,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:49:34,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:34,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:49:34,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:49:34,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:34,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 717 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:34,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:34,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:34,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:34,633 INFO L124 PetriNetUnfolderBase]: 243/457 cut-off events. [2024-06-20 15:49:34,635 INFO L125 PetriNetUnfolderBase]: For 13998/13998 co-relation queries the response was YES. [2024-06-20 15:49:34,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 457 events. 243/457 cut-off events. For 13998/13998 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1859 event pairs, 42 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2798. Up to 389 conditions per place. [2024-06-20 15:49:34,640 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-06-20 15:49:34,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 905 flow [2024-06-20 15:49:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:49:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:49:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-20 15:49:34,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:34,641 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 717 flow. Second operand 8 states and 104 transitions. [2024-06-20 15:49:34,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 905 flow [2024-06-20 15:49:34,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 96 transitions, 796 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:34,653 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 640 flow [2024-06-20 15:49:34,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-06-20 15:49:34,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-20 15:49:34,654 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 640 flow [2024-06-20 15:49:34,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:34,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:34,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:34,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 15:49:34,655 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)] === [2024-06-20 15:49:34,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1823004644, now seen corresponding path program 1 times [2024-06-20 15:49:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105309975] [2024-06-20 15:49:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105309975] [2024-06-20 15:49:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105309975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:35,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:35,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982332255] [2024-06-20 15:49:35,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:35,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:35,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:35,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:35,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:35,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 640 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-20 15:49:35,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:35,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:35,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:36,179 INFO L124 PetriNetUnfolderBase]: 240/452 cut-off events. [2024-06-20 15:49:36,180 INFO L125 PetriNetUnfolderBase]: For 13893/13893 co-relation queries the response was YES. [2024-06-20 15:49:36,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 452 events. 240/452 cut-off events. For 13893/13893 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1829 event pairs, 41 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 2664. Up to 386 conditions per place. [2024-06-20 15:49:36,196 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-06-20 15:49:36,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 97 transitions, 828 flow [2024-06-20 15:49:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 15:49:36,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-20 15:49:36,197 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 640 flow. Second operand 9 states and 112 transitions. [2024-06-20 15:49:36,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 97 transitions, 828 flow [2024-06-20 15:49:36,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 797 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:36,206 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 639 flow [2024-06-20 15:49:36,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-06-20 15:49:36,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-20 15:49:36,207 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 639 flow [2024-06-20 15:49:36,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-20 15:49:36,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:36,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:36,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 15:49:36,207 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)] === [2024-06-20 15:49:36,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1195311276, now seen corresponding path program 1 times [2024-06-20 15:49:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:36,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66965878] [2024-06-20 15:49:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66965878] [2024-06-20 15:49:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66965878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768172097] [2024-06-20 15:49:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:37,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:37,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:37,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:37,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:37,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:37,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:37,575 INFO L124 PetriNetUnfolderBase]: 253/464 cut-off events. [2024-06-20 15:49:37,575 INFO L125 PetriNetUnfolderBase]: For 14198/14198 co-relation queries the response was YES. [2024-06-20 15:49:37,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 464 events. 253/464 cut-off events. For 14198/14198 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1835 event pairs, 40 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2771. Up to 404 conditions per place. [2024-06-20 15:49:37,578 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 93 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-20 15:49:37,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 939 flow [2024-06-20 15:49:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 15:49:37,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:37,579 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 639 flow. Second operand 9 states and 117 transitions. [2024-06-20 15:49:37,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 939 flow [2024-06-20 15:49:37,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 907 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:37,589 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 678 flow [2024-06-20 15:49:37,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=678, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2024-06-20 15:49:37,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-20 15:49:37,590 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 678 flow [2024-06-20 15:49:37,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:37,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:37,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:37,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 15:49:37,590 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)] === [2024-06-20 15:49:37,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:37,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1195191120, now seen corresponding path program 1 times [2024-06-20 15:49:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140438320] [2024-06-20 15:49:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:38,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:38,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140438320] [2024-06-20 15:49:38,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140438320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:38,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:38,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:38,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230241576] [2024-06-20 15:49:38,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:38,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:38,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:38,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:38,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 678 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:38,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:38,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:38,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:38,794 INFO L124 PetriNetUnfolderBase]: 259/474 cut-off events. [2024-06-20 15:49:38,794 INFO L125 PetriNetUnfolderBase]: For 15730/15730 co-relation queries the response was YES. [2024-06-20 15:49:38,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2939 conditions, 474 events. 259/474 cut-off events. For 15730/15730 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1898 event pairs, 39 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2889. Up to 414 conditions per place. [2024-06-20 15:49:38,797 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 93 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-06-20 15:49:38,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 111 transitions, 978 flow [2024-06-20 15:49:38,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:49:38,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 15:49:38,798 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 678 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:49:38,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 111 transitions, 978 flow [2024-06-20 15:49:38,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 111 transitions, 923 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:38,809 INFO L231 Difference]: Finished difference. Result has 108 places, 92 transitions, 701 flow [2024-06-20 15:49:38,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=108, PETRI_TRANSITIONS=92} [2024-06-20 15:49:38,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-20 15:49:38,809 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 701 flow [2024-06-20 15:49:38,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:38,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:38,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:38,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 15:49:38,810 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)] === [2024-06-20 15:49:38,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1190549490, now seen corresponding path program 2 times [2024-06-20 15:49:38,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231153236] [2024-06-20 15:49:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:38,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231153236] [2024-06-20 15:49:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231153236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:39,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994119801] [2024-06-20 15:49:39,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:39,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:39,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:39,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 701 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:39,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:39,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:39,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:39,940 INFO L124 PetriNetUnfolderBase]: 265/484 cut-off events. [2024-06-20 15:49:39,940 INFO L125 PetriNetUnfolderBase]: For 17094/17094 co-relation queries the response was YES. [2024-06-20 15:49:39,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 484 events. 265/484 cut-off events. For 17094/17094 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1950 event pairs, 39 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 3025. Up to 415 conditions per place. [2024-06-20 15:49:39,943 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 91 selfloop transitions, 18 changer transitions 0/112 dead transitions. [2024-06-20 15:49:39,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 1009 flow [2024-06-20 15:49:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:49:39,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 15:49:39,944 INFO L175 Difference]: Start difference. First operand has 108 places, 92 transitions, 701 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:49:39,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 1009 flow [2024-06-20 15:49:39,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 112 transitions, 953 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:39,955 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 735 flow [2024-06-20 15:49:39,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=735, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-20 15:49:39,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-20 15:49:39,956 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 735 flow [2024-06-20 15:49:39,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:39,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:39,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:39,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 15:49:39,957 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)] === [2024-06-20 15:49:39,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1190542980, now seen corresponding path program 3 times [2024-06-20 15:49:39,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:39,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008325549] [2024-06-20 15:49:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:39,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:40,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008325549] [2024-06-20 15:49:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008325549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:40,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:40,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:40,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860371789] [2024-06-20 15:49:40,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:40,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:40,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:40,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:40,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 735 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:40,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:40,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:40,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:41,155 INFO L124 PetriNetUnfolderBase]: 268/489 cut-off events. [2024-06-20 15:49:41,155 INFO L125 PetriNetUnfolderBase]: For 17790/17790 co-relation queries the response was YES. [2024-06-20 15:49:41,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 489 events. 268/489 cut-off events. For 17790/17790 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1969 event pairs, 39 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 3111. Up to 408 conditions per place. [2024-06-20 15:49:41,158 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 24 changer transitions 0/113 dead transitions. [2024-06-20 15:49:41,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 1029 flow [2024-06-20 15:49:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:49:41,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 15:49:41,163 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 735 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:49:41,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 1029 flow [2024-06-20 15:49:41,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 961 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:41,177 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 754 flow [2024-06-20 15:49:41,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-20 15:49:41,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-20 15:49:41,178 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 754 flow [2024-06-20 15:49:41,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:41,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:41,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:41,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 15:49:41,178 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)] === [2024-06-20 15:49:41,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1024308952, now seen corresponding path program 1 times [2024-06-20 15:49:41,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:41,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57509301] [2024-06-20 15:49:41,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:41,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:42,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:42,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57509301] [2024-06-20 15:49:42,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57509301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:42,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:42,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:42,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973852210] [2024-06-20 15:49:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:42,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:42,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:42,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:42,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:42,349 INFO L124 PetriNetUnfolderBase]: 271/494 cut-off events. [2024-06-20 15:49:42,349 INFO L125 PetriNetUnfolderBase]: For 18566/18566 co-relation queries the response was YES. [2024-06-20 15:49:42,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3228 conditions, 494 events. 271/494 cut-off events. For 18566/18566 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2005 event pairs, 38 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 3175. Up to 446 conditions per place. [2024-06-20 15:49:42,352 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2024-06-20 15:49:42,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 1038 flow [2024-06-20 15:49:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-20 15:49:42,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-20 15:49:42,353 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 754 flow. Second operand 9 states and 111 transitions. [2024-06-20 15:49:42,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 1038 flow [2024-06-20 15:49:42,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 114 transitions, 967 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:42,368 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 746 flow [2024-06-20 15:49:42,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=746, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-20 15:49:42,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-20 15:49:42,368 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 746 flow [2024-06-20 15:49:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:42,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:42,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:42,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 15:49:42,369 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)] === [2024-06-20 15:49:42,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1051727398, now seen corresponding path program 2 times [2024-06-20 15:49:42,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:42,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174119885] [2024-06-20 15:49:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:43,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174119885] [2024-06-20 15:49:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174119885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:43,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373849829] [2024-06-20 15:49:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:43,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:43,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:43,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:43,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:43,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:43,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:43,569 INFO L124 PetriNetUnfolderBase]: 279/507 cut-off events. [2024-06-20 15:49:43,569 INFO L125 PetriNetUnfolderBase]: For 20215/20215 co-relation queries the response was YES. [2024-06-20 15:49:43,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3370 conditions, 507 events. 279/507 cut-off events. For 20215/20215 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2071 event pairs, 38 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 3316. Up to 432 conditions per place. [2024-06-20 15:49:43,572 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2024-06-20 15:49:43,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 1142 flow [2024-06-20 15:49:43,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:43,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:49:43,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-20 15:49:43,585 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 746 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:49:43,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 1142 flow [2024-06-20 15:49:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 117 transitions, 1095 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:43,600 INFO L231 Difference]: Finished difference. Result has 117 places, 104 transitions, 837 flow [2024-06-20 15:49:43,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=117, PETRI_TRANSITIONS=104} [2024-06-20 15:49:43,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-20 15:49:43,601 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 104 transitions, 837 flow [2024-06-20 15:49:43,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:43,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:43,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 15:49:43,602 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)] === [2024-06-20 15:49:43,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:43,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1051718780, now seen corresponding path program 4 times [2024-06-20 15:49:43,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:43,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496123632] [2024-06-20 15:49:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:43,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:44,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:44,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496123632] [2024-06-20 15:49:44,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496123632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:44,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:44,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10711521] [2024-06-20 15:49:44,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:44,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:44,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:44,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:44,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:44,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:44,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 104 transitions, 837 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:44,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:44,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:44,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:44,755 INFO L124 PetriNetUnfolderBase]: 292/528 cut-off events. [2024-06-20 15:49:44,755 INFO L125 PetriNetUnfolderBase]: For 23208/23208 co-relation queries the response was YES. [2024-06-20 15:49:44,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 528 events. 292/528 cut-off events. For 23208/23208 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2173 event pairs, 38 based on Foata normal form. 1/527 useless extension candidates. Maximal degree in co-relation 3650. Up to 413 conditions per place. [2024-06-20 15:49:44,758 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 36 changer transitions 0/123 dead transitions. [2024-06-20 15:49:44,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 123 transitions, 1277 flow [2024-06-20 15:49:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 15:49:44,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:44,771 INFO L175 Difference]: Start difference. First operand has 117 places, 104 transitions, 837 flow. Second operand 9 states and 117 transitions. [2024-06-20 15:49:44,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 123 transitions, 1277 flow [2024-06-20 15:49:44,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 1223 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:44,789 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 975 flow [2024-06-20 15:49:44,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=975, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-20 15:49:44,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-20 15:49:44,790 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 975 flow [2024-06-20 15:49:44,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:44,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:44,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:44,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 15:49:44,791 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)] === [2024-06-20 15:49:44,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488388, now seen corresponding path program 3 times [2024-06-20 15:49:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:44,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529624533] [2024-06-20 15:49:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:44,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:45,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:45,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529624533] [2024-06-20 15:49:45,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529624533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:45,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:45,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429196209] [2024-06-20 15:49:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:45,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:45,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 975 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:45,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:45,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:45,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:45,872 INFO L124 PetriNetUnfolderBase]: 295/533 cut-off events. [2024-06-20 15:49:45,872 INFO L125 PetriNetUnfolderBase]: For 24834/24834 co-relation queries the response was YES. [2024-06-20 15:49:45,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 533 events. 295/533 cut-off events. For 24834/24834 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2206 event pairs, 38 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 3887. Up to 479 conditions per place. [2024-06-20 15:49:45,875 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-06-20 15:49:45,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 123 transitions, 1277 flow [2024-06-20 15:49:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 15:49:45,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-20 15:49:45,877 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 975 flow. Second operand 9 states and 110 transitions. [2024-06-20 15:49:45,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 123 transitions, 1277 flow [2024-06-20 15:49:45,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 123 transitions, 1220 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:45,900 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 995 flow [2024-06-20 15:49:45,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-20 15:49:45,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-20 15:49:45,900 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 995 flow [2024-06-20 15:49:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:45,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:45,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:45,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 15:49:45,901 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)] === [2024-06-20 15:49:45,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:45,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488140, now seen corresponding path program 5 times [2024-06-20 15:49:45,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:45,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286436365] [2024-06-20 15:49:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:45,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286436365] [2024-06-20 15:49:46,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286436365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:46,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:46,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:46,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382821421] [2024-06-20 15:49:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:46,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:46,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 995 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:46,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:46,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:46,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:47,109 INFO L124 PetriNetUnfolderBase]: 298/538 cut-off events. [2024-06-20 15:49:47,110 INFO L125 PetriNetUnfolderBase]: For 26027/26027 co-relation queries the response was YES. [2024-06-20 15:49:47,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 538 events. 298/538 cut-off events. For 26027/26027 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2225 event pairs, 38 based on Foata normal form. 1/537 useless extension candidates. Maximal degree in co-relation 3967. Up to 449 conditions per place. [2024-06-20 15:49:47,114 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 25 changer transitions 0/128 dead transitions. [2024-06-20 15:49:47,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 128 transitions, 1419 flow [2024-06-20 15:49:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-20 15:49:47,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-20 15:49:47,117 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 995 flow. Second operand 9 states and 118 transitions. [2024-06-20 15:49:47,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 128 transitions, 1419 flow [2024-06-20 15:49:47,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 1364 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:47,141 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 1033 flow [2024-06-20 15:49:47,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1033, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-06-20 15:49:47,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-20 15:49:47,142 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 1033 flow [2024-06-20 15:49:47,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:47,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:47,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:47,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 15:49:47,143 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)] === [2024-06-20 15:49:47,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:47,143 INFO L85 PathProgramCache]: Analyzing trace with hash -173466658, now seen corresponding path program 6 times [2024-06-20 15:49:47,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:47,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111127435] [2024-06-20 15:49:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:47,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:47,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:47,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111127435] [2024-06-20 15:49:47,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111127435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:47,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:47,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:47,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078797545] [2024-06-20 15:49:47,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:47,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:47,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:47,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:48,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:48,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:48,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:48,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:48,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:48,258 INFO L124 PetriNetUnfolderBase]: 294/532 cut-off events. [2024-06-20 15:49:48,258 INFO L125 PetriNetUnfolderBase]: For 26403/26403 co-relation queries the response was YES. [2024-06-20 15:49:48,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 532 events. 294/532 cut-off events. For 26403/26403 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2199 event pairs, 38 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3872. Up to 451 conditions per place. [2024-06-20 15:49:48,262 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 22 changer transitions 0/127 dead transitions. [2024-06-20 15:49:48,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 1337 flow [2024-06-20 15:49:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 15:49:48,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-20 15:49:48,277 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 1033 flow. Second operand 9 states and 115 transitions. [2024-06-20 15:49:48,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 1337 flow [2024-06-20 15:49:48,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1204 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:48,304 INFO L231 Difference]: Finished difference. Result has 130 places, 113 transitions, 950 flow [2024-06-20 15:49:48,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=950, PETRI_PLACES=130, PETRI_TRANSITIONS=113} [2024-06-20 15:49:48,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-20 15:49:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 113 transitions, 950 flow [2024-06-20 15:49:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:48,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:48,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 15:49:48,305 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)] === [2024-06-20 15:49:48,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1017822202, now seen corresponding path program 4 times [2024-06-20 15:49:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:48,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969788447] [2024-06-20 15:49:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:49,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:49,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:49,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969788447] [2024-06-20 15:49:49,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969788447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:49,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:49,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:49,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790154266] [2024-06-20 15:49:49,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:49,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:49,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:49,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:49,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:49,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:49,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 113 transitions, 950 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:49,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:49,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:49,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:49,486 INFO L124 PetriNetUnfolderBase]: 292/529 cut-off events. [2024-06-20 15:49:49,487 INFO L125 PetriNetUnfolderBase]: For 25562/25562 co-relation queries the response was YES. [2024-06-20 15:49:49,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 529 events. 292/529 cut-off events. For 25562/25562 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2194 event pairs, 38 based on Foata normal form. 1/528 useless extension candidates. Maximal degree in co-relation 3739. Up to 454 conditions per place. [2024-06-20 15:49:49,490 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 96 selfloop transitions, 27 changer transitions 0/126 dead transitions. [2024-06-20 15:49:49,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 126 transitions, 1237 flow [2024-06-20 15:49:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:49:49,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-20 15:49:49,491 INFO L175 Difference]: Start difference. First operand has 130 places, 113 transitions, 950 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:49:49,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 126 transitions, 1237 flow [2024-06-20 15:49:49,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 126 transitions, 1164 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 15:49:49,518 INFO L231 Difference]: Finished difference. Result has 131 places, 114 transitions, 949 flow [2024-06-20 15:49:49,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=949, PETRI_PLACES=131, PETRI_TRANSITIONS=114} [2024-06-20 15:49:49,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-20 15:49:49,520 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 114 transitions, 949 flow [2024-06-20 15:49:49,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:49,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:49,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:49,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 15:49:49,524 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)] === [2024-06-20 15:49:49,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash 382735902, now seen corresponding path program 7 times [2024-06-20 15:49:49,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:49,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186877295] [2024-06-20 15:49:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:50,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186877295] [2024-06-20 15:49:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186877295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:50,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:50,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617659118] [2024-06-20 15:49:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:50,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:50,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:50,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:50,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 114 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:50,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:50,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:50,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:50,616 INFO L124 PetriNetUnfolderBase]: 298/540 cut-off events. [2024-06-20 15:49:50,617 INFO L125 PetriNetUnfolderBase]: For 27880/27883 co-relation queries the response was YES. [2024-06-20 15:49:50,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 540 events. 298/540 cut-off events. For 27880/27883 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2251 event pairs, 50 based on Foata normal form. 2/539 useless extension candidates. Maximal degree in co-relation 3843. Up to 443 conditions per place. [2024-06-20 15:49:50,621 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 27 changer transitions 0/128 dead transitions. [2024-06-20 15:49:50,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 128 transitions, 1307 flow [2024-06-20 15:49:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-20 15:49:50,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 15:49:50,623 INFO L175 Difference]: Start difference. First operand has 131 places, 114 transitions, 949 flow. Second operand 9 states and 114 transitions. [2024-06-20 15:49:50,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 128 transitions, 1307 flow [2024-06-20 15:49:50,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 1260 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:50,652 INFO L231 Difference]: Finished difference. Result has 134 places, 117 transitions, 1028 flow [2024-06-20 15:49:50,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1028, PETRI_PLACES=134, PETRI_TRANSITIONS=117} [2024-06-20 15:49:50,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-20 15:49:50,653 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 117 transitions, 1028 flow [2024-06-20 15:49:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:50,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:50,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:50,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 15:49:50,653 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)] === [2024-06-20 15:49:50,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash 382742660, now seen corresponding path program 5 times [2024-06-20 15:49:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142140343] [2024-06-20 15:49:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:51,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:51,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142140343] [2024-06-20 15:49:51,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142140343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:51,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:51,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:51,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380818960] [2024-06-20 15:49:51,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:51,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:51,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:51,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 117 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:51,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:51,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:51,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:51,780 INFO L124 PetriNetUnfolderBase]: 301/545 cut-off events. [2024-06-20 15:49:51,780 INFO L125 PetriNetUnfolderBase]: For 28531/28534 co-relation queries the response was YES. [2024-06-20 15:49:51,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 545 events. 301/545 cut-off events. For 28531/28534 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2285 event pairs, 46 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3977. Up to 481 conditions per place. [2024-06-20 15:49:51,783 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2024-06-20 15:49:51,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1332 flow [2024-06-20 15:49:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-20 15:49:51,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-20 15:49:51,797 INFO L175 Difference]: Start difference. First operand has 134 places, 117 transitions, 1028 flow. Second operand 9 states and 109 transitions. [2024-06-20 15:49:51,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1332 flow [2024-06-20 15:49:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 1228 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:51,825 INFO L231 Difference]: Finished difference. Result has 136 places, 119 transitions, 1009 flow [2024-06-20 15:49:51,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1009, PETRI_PLACES=136, PETRI_TRANSITIONS=119} [2024-06-20 15:49:51,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-20 15:49:51,826 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 119 transitions, 1009 flow [2024-06-20 15:49:51,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:51,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:51,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:51,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 15:49:51,826 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)] === [2024-06-20 15:49:51,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash 678200870, now seen corresponding path program 6 times [2024-06-20 15:49:51,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:51,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716430488] [2024-06-20 15:49:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:52,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716430488] [2024-06-20 15:49:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716430488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:52,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169651852] [2024-06-20 15:49:52,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:52,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:52,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:52,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:52,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:52,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 119 transitions, 1009 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:52,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:52,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:52,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:53,194 INFO L124 PetriNetUnfolderBase]: 304/549 cut-off events. [2024-06-20 15:49:53,194 INFO L125 PetriNetUnfolderBase]: For 29462/29462 co-relation queries the response was YES. [2024-06-20 15:49:53,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4054 conditions, 549 events. 304/549 cut-off events. For 29462/29462 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2278 event pairs, 38 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 3988. Up to 513 conditions per place. [2024-06-20 15:49:53,197 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2024-06-20 15:49:53,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 1344 flow [2024-06-20 15:49:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-20 15:49:53,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-20 15:49:53,199 INFO L175 Difference]: Start difference. First operand has 136 places, 119 transitions, 1009 flow. Second operand 9 states and 105 transitions. [2024-06-20 15:49:53,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 1344 flow [2024-06-20 15:49:53,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 132 transitions, 1275 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:53,228 INFO L231 Difference]: Finished difference. Result has 139 places, 123 transitions, 1039 flow [2024-06-20 15:49:53,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1039, PETRI_PLACES=139, PETRI_TRANSITIONS=123} [2024-06-20 15:49:53,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-20 15:49:53,229 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 123 transitions, 1039 flow [2024-06-20 15:49:53,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:53,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:53,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:53,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 15:49:53,229 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)] === [2024-06-20 15:49:53,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:53,231 INFO L85 PathProgramCache]: Analyzing trace with hash 382981980, now seen corresponding path program 1 times [2024-06-20 15:49:53,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:53,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409399867] [2024-06-20 15:49:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:53,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:54,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409399867] [2024-06-20 15:49:54,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409399867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:54,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:54,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:54,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393239974] [2024-06-20 15:49:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:54,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:54,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:54,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:49:54,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 123 transitions, 1039 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-20 15:49:54,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:54,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:49:54,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:54,771 INFO L124 PetriNetUnfolderBase]: 287/532 cut-off events. [2024-06-20 15:49:54,771 INFO L125 PetriNetUnfolderBase]: For 29588/29591 co-relation queries the response was YES. [2024-06-20 15:49:54,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3893 conditions, 532 events. 287/532 cut-off events. For 29588/29591 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2282 event pairs, 42 based on Foata normal form. 3/532 useless extension candidates. Maximal degree in co-relation 3825. Up to 440 conditions per place. [2024-06-20 15:49:54,774 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-06-20 15:49:54,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1283 flow [2024-06-20 15:49:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 15:49:54,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-20 15:49:54,776 INFO L175 Difference]: Start difference. First operand has 139 places, 123 transitions, 1039 flow. Second operand 9 states and 115 transitions. [2024-06-20 15:49:54,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1283 flow [2024-06-20 15:49:54,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 132 transitions, 1215 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-20 15:49:54,812 INFO L231 Difference]: Finished difference. Result has 143 places, 123 transitions, 1010 flow [2024-06-20 15:49:54,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1010, PETRI_PLACES=143, PETRI_TRANSITIONS=123} [2024-06-20 15:49:54,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-20 15:49:54,813 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 123 transitions, 1010 flow [2024-06-20 15:49:54,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-20 15:49:54,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:54,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:54,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 15:49:54,813 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)] === [2024-06-20 15:49:54,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 668081540, now seen corresponding path program 7 times [2024-06-20 15:49:54,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:54,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452065182] [2024-06-20 15:49:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:54,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:55,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452065182] [2024-06-20 15:49:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452065182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:55,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288010111] [2024-06-20 15:49:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:55,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:55,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 123 transitions, 1010 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:55,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:55,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:55,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:55,943 INFO L124 PetriNetUnfolderBase]: 310/560 cut-off events. [2024-06-20 15:49:55,943 INFO L125 PetriNetUnfolderBase]: For 32243/32246 co-relation queries the response was YES. [2024-06-20 15:49:55,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 560 events. 310/560 cut-off events. For 32243/32246 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2359 event pairs, 46 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 4124. Up to 426 conditions per place. [2024-06-20 15:49:55,947 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 48 changer transitions 0/141 dead transitions. [2024-06-20 15:49:55,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 141 transitions, 1627 flow [2024-06-20 15:49:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 15:49:55,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:55,949 INFO L175 Difference]: Start difference. First operand has 143 places, 123 transitions, 1010 flow. Second operand 9 states and 117 transitions. [2024-06-20 15:49:55,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 141 transitions, 1627 flow [2024-06-20 15:49:55,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 141 transitions, 1567 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 15:49:55,992 INFO L231 Difference]: Finished difference. Result has 145 places, 130 transitions, 1195 flow [2024-06-20 15:49:55,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1195, PETRI_PLACES=145, PETRI_TRANSITIONS=130} [2024-06-20 15:49:55,992 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-20 15:49:55,992 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 130 transitions, 1195 flow [2024-06-20 15:49:55,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:55,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:55,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:55,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 15:49:55,993 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)] === [2024-06-20 15:49:55,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash 920746364, now seen corresponding path program 8 times [2024-06-20 15:49:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:55,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90893118] [2024-06-20 15:49:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:55,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:56,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:56,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90893118] [2024-06-20 15:49:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90893118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:56,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:56,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:56,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188178664] [2024-06-20 15:49:56,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:56,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:56,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:56,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 130 transitions, 1195 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:56,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:56,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:56,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:57,174 INFO L124 PetriNetUnfolderBase]: 313/565 cut-off events. [2024-06-20 15:49:57,174 INFO L125 PetriNetUnfolderBase]: For 34010/34013 co-relation queries the response was YES. [2024-06-20 15:49:57,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 565 events. 313/565 cut-off events. For 34010/34013 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2388 event pairs, 50 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 4290. Up to 462 conditions per place. [2024-06-20 15:49:57,179 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 30 changer transitions 0/143 dead transitions. [2024-06-20 15:49:57,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 143 transitions, 1571 flow [2024-06-20 15:49:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:57,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:49:57,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 15:49:57,180 INFO L175 Difference]: Start difference. First operand has 145 places, 130 transitions, 1195 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:49:57,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 143 transitions, 1571 flow [2024-06-20 15:49:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 143 transitions, 1492 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-20 15:49:57,232 INFO L231 Difference]: Finished difference. Result has 150 places, 132 transitions, 1229 flow [2024-06-20 15:49:57,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=150, PETRI_TRANSITIONS=132} [2024-06-20 15:49:57,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-20 15:49:57,232 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 132 transitions, 1229 flow [2024-06-20 15:49:57,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:57,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:57,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:57,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 15:49:57,233 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)] === [2024-06-20 15:49:57,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash 668073170, now seen corresponding path program 8 times [2024-06-20 15:49:57,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:57,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970334051] [2024-06-20 15:49:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:57,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:58,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:58,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970334051] [2024-06-20 15:49:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970334051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026096691] [2024-06-20 15:49:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:58,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:58,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:58,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 132 transitions, 1229 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:58,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:58,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:58,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:58,336 INFO L124 PetriNetUnfolderBase]: 311/562 cut-off events. [2024-06-20 15:49:58,337 INFO L125 PetriNetUnfolderBase]: For 33941/33944 co-relation queries the response was YES. [2024-06-20 15:49:58,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4331 conditions, 562 events. 311/562 cut-off events. For 33941/33944 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2382 event pairs, 46 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 4257. Up to 429 conditions per place. [2024-06-20 15:49:58,340 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 50 changer transitions 0/143 dead transitions. [2024-06-20 15:49:58,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 143 transitions, 1640 flow [2024-06-20 15:49:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 15:49:58,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-20 15:49:58,341 INFO L175 Difference]: Start difference. First operand has 150 places, 132 transitions, 1229 flow. Second operand 9 states and 115 transitions. [2024-06-20 15:49:58,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 143 transitions, 1640 flow [2024-06-20 15:49:58,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 143 transitions, 1503 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-20 15:49:58,402 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 1210 flow [2024-06-20 15:49:58,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1210, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2024-06-20 15:49:58,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-20 15:49:58,403 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 1210 flow [2024-06-20 15:49:58,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:58,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:58,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:58,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 15:49:58,404 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)] === [2024-06-20 15:49:58,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 668072922, now seen corresponding path program 9 times [2024-06-20 15:49:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:58,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847925126] [2024-06-20 15:49:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:58,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:59,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847925126] [2024-06-20 15:49:59,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847925126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:59,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:59,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:49:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871792519] [2024-06-20 15:49:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:59,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:49:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:49:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:49:59,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:49:59,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:59,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:59,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:49:59,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:59,526 INFO L124 PetriNetUnfolderBase]: 314/567 cut-off events. [2024-06-20 15:49:59,527 INFO L125 PetriNetUnfolderBase]: For 35274/35277 co-relation queries the response was YES. [2024-06-20 15:49:59,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 567 events. 314/567 cut-off events. For 35274/35277 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2400 event pairs, 50 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 4297. Up to 403 conditions per place. [2024-06-20 15:49:59,531 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 58 changer transitions 0/148 dead transitions. [2024-06-20 15:49:59,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 148 transitions, 1734 flow [2024-06-20 15:49:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:49:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:49:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 15:49:59,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:49:59,532 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 1210 flow. Second operand 9 states and 117 transitions. [2024-06-20 15:49:59,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 148 transitions, 1734 flow [2024-06-20 15:49:59,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 148 transitions, 1642 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-20 15:49:59,584 INFO L231 Difference]: Finished difference. Result has 156 places, 137 transitions, 1382 flow [2024-06-20 15:49:59,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1382, PETRI_PLACES=156, PETRI_TRANSITIONS=137} [2024-06-20 15:49:59,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-20 15:49:59,585 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 137 transitions, 1382 flow [2024-06-20 15:49:59,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:49:59,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:59,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:59,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 15:49:59,586 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)] === [2024-06-20 15:49:59,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:59,586 INFO L85 PathProgramCache]: Analyzing trace with hash 382981670, now seen corresponding path program 9 times [2024-06-20 15:49:59,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:59,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922991903] [2024-06-20 15:49:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:59,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922991903] [2024-06-20 15:50:00,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922991903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:00,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:00,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:50:00,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581254436] [2024-06-20 15:50:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:00,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:50:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:50:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:50:00,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:00,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 137 transitions, 1382 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:50:00,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:00,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:00,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:00,682 INFO L124 PetriNetUnfolderBase]: 325/585 cut-off events. [2024-06-20 15:50:00,682 INFO L125 PetriNetUnfolderBase]: For 39877/39880 co-relation queries the response was YES. [2024-06-20 15:50:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 585 events. 325/585 cut-off events. For 39877/39880 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2496 event pairs, 47 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 4694. Up to 490 conditions per place. [2024-06-20 15:50:00,686 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 31 changer transitions 0/153 dead transitions. [2024-06-20 15:50:00,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 153 transitions, 1922 flow [2024-06-20 15:50:00,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:50:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:50:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 15:50:00,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-20 15:50:00,704 INFO L175 Difference]: Start difference. First operand has 156 places, 137 transitions, 1382 flow. Second operand 9 states and 115 transitions. [2024-06-20 15:50:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 153 transitions, 1922 flow [2024-06-20 15:50:00,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 153 transitions, 1840 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-20 15:50:00,772 INFO L231 Difference]: Finished difference. Result has 160 places, 142 transitions, 1475 flow [2024-06-20 15:50:00,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=160, PETRI_TRANSITIONS=142} [2024-06-20 15:50:00,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-20 15:50:00,772 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 142 transitions, 1475 flow [2024-06-20 15:50:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:50:00,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:00,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:00,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 15:50:00,773 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)] === [2024-06-20 15:50:00,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 382973052, now seen corresponding path program 10 times [2024-06-20 15:50:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266278650] [2024-06-20 15:50:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:00,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:01,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266278650] [2024-06-20 15:50:01,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266278650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:01,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:01,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:50:01,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607882707] [2024-06-20 15:50:01,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:01,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:50:01,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:50:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:50:01,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:01,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 142 transitions, 1475 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:50:01,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:01,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:01,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:01,988 INFO L124 PetriNetUnfolderBase]: 323/582 cut-off events. [2024-06-20 15:50:01,988 INFO L125 PetriNetUnfolderBase]: For 38577/38580 co-relation queries the response was YES. [2024-06-20 15:50:01,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 582 events. 323/582 cut-off events. For 38577/38580 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2478 event pairs, 50 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 4658. Up to 470 conditions per place. [2024-06-20 15:50:01,992 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 34 changer transitions 0/153 dead transitions. [2024-06-20 15:50:01,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 153 transitions, 1839 flow [2024-06-20 15:50:01,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:50:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:50:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-20 15:50:01,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-20 15:50:01,993 INFO L175 Difference]: Start difference. First operand has 160 places, 142 transitions, 1475 flow. Second operand 9 states and 118 transitions. [2024-06-20 15:50:01,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 153 transitions, 1839 flow [2024-06-20 15:50:02,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 153 transitions, 1759 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-20 15:50:02,070 INFO L231 Difference]: Finished difference. Result has 164 places, 142 transitions, 1468 flow [2024-06-20 15:50:02,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1468, PETRI_PLACES=164, PETRI_TRANSITIONS=142} [2024-06-20 15:50:02,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-20 15:50:02,071 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 1468 flow [2024-06-20 15:50:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:50:02,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:02,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:02,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 15:50:02,071 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)] === [2024-06-20 15:50:02,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 382973300, now seen corresponding path program 10 times [2024-06-20 15:50:02,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:02,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719287031] [2024-06-20 15:50:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:02,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:02,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719287031] [2024-06-20 15:50:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719287031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:02,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:02,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:50:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106563276] [2024-06-20 15:50:02,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:50:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:02,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:50:02,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:50:02,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:02,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 1468 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:50:02,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:02,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:02,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:03,160 INFO L124 PetriNetUnfolderBase]: 324/584 cut-off events. [2024-06-20 15:50:03,161 INFO L125 PetriNetUnfolderBase]: For 39604/39607 co-relation queries the response was YES. [2024-06-20 15:50:03,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 584 events. 324/584 cut-off events. For 39604/39607 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2495 event pairs, 46 based on Foata normal form. 2/583 useless extension candidates. Maximal degree in co-relation 4666. Up to 490 conditions per place. [2024-06-20 15:50:03,165 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 120 selfloop transitions, 32 changer transitions 0/155 dead transitions. [2024-06-20 15:50:03,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 155 transitions, 1952 flow [2024-06-20 15:50:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:50:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:50:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-20 15:50:03,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:50:03,166 INFO L175 Difference]: Start difference. First operand has 164 places, 142 transitions, 1468 flow. Second operand 9 states and 117 transitions. [2024-06-20 15:50:03,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 155 transitions, 1952 flow [2024-06-20 15:50:03,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 1758 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-20 15:50:03,239 INFO L231 Difference]: Finished difference. Result has 163 places, 144 transitions, 1382 flow [2024-06-20 15:50:03,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1382, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2024-06-20 15:50:03,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-20 15:50:03,239 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 1382 flow [2024-06-20 15:50:03,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 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) [2024-06-20 15:50:03,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:03,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:03,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 15:50:03,240 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)] === [2024-06-20 15:50:03,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -464768534, now seen corresponding path program 1 times [2024-06-20 15:50:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214321757] [2024-06-20 15:50:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:04,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:04,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214321757] [2024-06-20 15:50:04,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214321757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:04,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:04,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428909150] [2024-06-20 15:50:04,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:04,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:04,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 1382 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:04,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:04,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:04,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:04,867 INFO L124 PetriNetUnfolderBase]: 358/651 cut-off events. [2024-06-20 15:50:04,867 INFO L125 PetriNetUnfolderBase]: For 39820/39820 co-relation queries the response was YES. [2024-06-20 15:50:04,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 651 events. 358/651 cut-off events. For 39820/39820 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2868 event pairs, 40 based on Foata normal form. 1/650 useless extension candidates. Maximal degree in co-relation 4838. Up to 559 conditions per place. [2024-06-20 15:50:04,872 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 25 changer transitions 0/180 dead transitions. [2024-06-20 15:50:04,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 180 transitions, 1949 flow [2024-06-20 15:50:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:50:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:50:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:50:04,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:50:04,873 INFO L175 Difference]: Start difference. First operand has 163 places, 144 transitions, 1382 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:50:04,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 180 transitions, 1949 flow [2024-06-20 15:50:04,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 180 transitions, 1859 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-20 15:50:04,931 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 1542 flow [2024-06-20 15:50:04,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1542, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2024-06-20 15:50:04,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-20 15:50:04,932 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 1542 flow [2024-06-20 15:50:04,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:04,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:04,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:04,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 15:50:04,937 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)] === [2024-06-20 15:50:04,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1600057134, now seen corresponding path program 2 times [2024-06-20 15:50:04,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:04,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930149935] [2024-06-20 15:50:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:06,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930149935] [2024-06-20 15:50:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930149935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:06,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:06,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490324115] [2024-06-20 15:50:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:06,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:06,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:06,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:06,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 1542 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:06,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:06,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:06,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:06,712 INFO L124 PetriNetUnfolderBase]: 361/657 cut-off events. [2024-06-20 15:50:06,712 INFO L125 PetriNetUnfolderBase]: For 41494/41494 co-relation queries the response was YES. [2024-06-20 15:50:06,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 657 events. 361/657 cut-off events. For 41494/41494 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2920 event pairs, 37 based on Foata normal form. 1/656 useless extension candidates. Maximal degree in co-relation 4979. Up to 547 conditions per place. [2024-06-20 15:50:06,716 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 33 changer transitions 0/185 dead transitions. [2024-06-20 15:50:06,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 185 transitions, 2024 flow [2024-06-20 15:50:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:50:06,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 15:50:06,718 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 1542 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:50:06,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 185 transitions, 2024 flow [2024-06-20 15:50:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 1973 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-20 15:50:06,785 INFO L231 Difference]: Finished difference. Result has 180 places, 164 transitions, 1623 flow [2024-06-20 15:50:06,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1623, PETRI_PLACES=180, PETRI_TRANSITIONS=164} [2024-06-20 15:50:06,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-20 15:50:06,786 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 164 transitions, 1623 flow [2024-06-20 15:50:06,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:06,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:06,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 15:50:06,787 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)] === [2024-06-20 15:50:06,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1963108571, now seen corresponding path program 1 times [2024-06-20 15:50:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960475556] [2024-06-20 15:50:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:06,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:07,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:07,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960475556] [2024-06-20 15:50:07,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960475556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:07,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:07,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:07,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200835748] [2024-06-20 15:50:07,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:07,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:07,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:07,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:07,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:07,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 164 transitions, 1623 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:07,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:07,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:07,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:08,003 INFO L124 PetriNetUnfolderBase]: 373/676 cut-off events. [2024-06-20 15:50:08,003 INFO L125 PetriNetUnfolderBase]: For 47508/47508 co-relation queries the response was YES. [2024-06-20 15:50:08,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5328 conditions, 676 events. 373/676 cut-off events. For 47508/47508 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3022 event pairs, 36 based on Foata normal form. 4/677 useless extension candidates. Maximal degree in co-relation 5241. Up to 572 conditions per place. [2024-06-20 15:50:08,009 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 27 changer transitions 0/187 dead transitions. [2024-06-20 15:50:08,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 187 transitions, 2137 flow [2024-06-20 15:50:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 15:50:08,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:50:08,010 INFO L175 Difference]: Start difference. First operand has 180 places, 164 transitions, 1623 flow. Second operand 10 states and 128 transitions. [2024-06-20 15:50:08,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 187 transitions, 2137 flow [2024-06-20 15:50:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 187 transitions, 2023 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:08,088 INFO L231 Difference]: Finished difference. Result has 182 places, 167 transitions, 1633 flow [2024-06-20 15:50:08,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1633, PETRI_PLACES=182, PETRI_TRANSITIONS=167} [2024-06-20 15:50:08,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-20 15:50:08,089 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 167 transitions, 1633 flow [2024-06-20 15:50:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:08,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:08,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:08,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 15:50:08,090 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)] === [2024-06-20 15:50:08,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1335050474, now seen corresponding path program 3 times [2024-06-20 15:50:08,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:08,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112992039] [2024-06-20 15:50:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:09,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:09,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112992039] [2024-06-20 15:50:09,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112992039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:09,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:09,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:09,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986879639] [2024-06-20 15:50:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:09,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:09,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:09,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 167 transitions, 1633 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:09,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:09,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:09,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:09,733 INFO L124 PetriNetUnfolderBase]: 376/684 cut-off events. [2024-06-20 15:50:09,733 INFO L125 PetriNetUnfolderBase]: For 43899/43899 co-relation queries the response was YES. [2024-06-20 15:50:09,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5379 conditions, 684 events. 376/684 cut-off events. For 43899/43899 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3081 event pairs, 36 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 5291. Up to 553 conditions per place. [2024-06-20 15:50:09,738 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 149 selfloop transitions, 37 changer transitions 0/189 dead transitions. [2024-06-20 15:50:09,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 189 transitions, 2143 flow [2024-06-20 15:50:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:50:09,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 15:50:09,740 INFO L175 Difference]: Start difference. First operand has 182 places, 167 transitions, 1633 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:50:09,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 189 transitions, 2143 flow [2024-06-20 15:50:09,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 189 transitions, 2043 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:09,810 INFO L231 Difference]: Finished difference. Result has 184 places, 169 transitions, 1672 flow [2024-06-20 15:50:09,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1672, PETRI_PLACES=184, PETRI_TRANSITIONS=169} [2024-06-20 15:50:09,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-20 15:50:09,811 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 169 transitions, 1672 flow [2024-06-20 15:50:09,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:09,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:09,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:09,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 15:50:09,811 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)] === [2024-06-20 15:50:09,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1747672314, now seen corresponding path program 4 times [2024-06-20 15:50:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:09,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595476658] [2024-06-20 15:50:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:09,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:10,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:10,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595476658] [2024-06-20 15:50:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595476658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:10,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:10,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:10,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260048883] [2024-06-20 15:50:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:10,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:10,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:10,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:10,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 169 transitions, 1672 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:10,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:10,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:10,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:11,298 INFO L124 PetriNetUnfolderBase]: 379/691 cut-off events. [2024-06-20 15:50:11,298 INFO L125 PetriNetUnfolderBase]: For 45646/45646 co-relation queries the response was YES. [2024-06-20 15:50:11,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5421 conditions, 691 events. 379/691 cut-off events. For 45646/45646 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3133 event pairs, 39 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 5332. Up to 578 conditions per place. [2024-06-20 15:50:11,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 28 changer transitions 0/188 dead transitions. [2024-06-20 15:50:11,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 188 transitions, 2192 flow [2024-06-20 15:50:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:50:11,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:50:11,305 INFO L175 Difference]: Start difference. First operand has 184 places, 169 transitions, 1672 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:50:11,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 188 transitions, 2192 flow [2024-06-20 15:50:11,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 188 transitions, 2069 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:11,379 INFO L231 Difference]: Finished difference. Result has 186 places, 171 transitions, 1674 flow [2024-06-20 15:50:11,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1674, PETRI_PLACES=186, PETRI_TRANSITIONS=171} [2024-06-20 15:50:11,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-20 15:50:11,379 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 171 transitions, 1674 flow [2024-06-20 15:50:11,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:11,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:11,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:11,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 15:50:11,380 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)] === [2024-06-20 15:50:11,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1747672531, now seen corresponding path program 2 times [2024-06-20 15:50:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430716854] [2024-06-20 15:50:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:12,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:12,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430716854] [2024-06-20 15:50:12,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430716854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:12,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:12,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775873259] [2024-06-20 15:50:12,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:12,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:12,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:12,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:12,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:12,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 171 transitions, 1674 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:12,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:12,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:12,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:12,715 INFO L124 PetriNetUnfolderBase]: 391/711 cut-off events. [2024-06-20 15:50:12,715 INFO L125 PetriNetUnfolderBase]: For 52080/52080 co-relation queries the response was YES. [2024-06-20 15:50:12,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 711 events. 391/711 cut-off events. For 52080/52080 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3250 event pairs, 39 based on Foata normal form. 4/712 useless extension candidates. Maximal degree in co-relation 5494. Up to 589 conditions per place. [2024-06-20 15:50:12,720 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 29 changer transitions 0/192 dead transitions. [2024-06-20 15:50:12,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 192 transitions, 2220 flow [2024-06-20 15:50:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 15:50:12,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:50:12,721 INFO L175 Difference]: Start difference. First operand has 186 places, 171 transitions, 1674 flow. Second operand 10 states and 128 transitions. [2024-06-20 15:50:12,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 192 transitions, 2220 flow [2024-06-20 15:50:12,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 192 transitions, 2111 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:12,791 INFO L231 Difference]: Finished difference. Result has 188 places, 174 transitions, 1701 flow [2024-06-20 15:50:12,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1701, PETRI_PLACES=188, PETRI_TRANSITIONS=174} [2024-06-20 15:50:12,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-20 15:50:12,792 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 174 transitions, 1701 flow [2024-06-20 15:50:12,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:12,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:12,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 15:50:12,793 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)] === [2024-06-20 15:50:12,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1747874341, now seen corresponding path program 3 times [2024-06-20 15:50:12,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:12,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374929305] [2024-06-20 15:50:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:12,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374929305] [2024-06-20 15:50:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374929305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:13,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:13,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296645685] [2024-06-20 15:50:13,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:13,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:13,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:13,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:13,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 174 transitions, 1701 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:13,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:13,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:13,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:14,144 INFO L124 PetriNetUnfolderBase]: 399/724 cut-off events. [2024-06-20 15:50:14,144 INFO L125 PetriNetUnfolderBase]: For 50932/50932 co-relation queries the response was YES. [2024-06-20 15:50:14,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5797 conditions, 724 events. 399/724 cut-off events. For 50932/50932 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3303 event pairs, 38 based on Foata normal form. 1/722 useless extension candidates. Maximal degree in co-relation 5706. Up to 580 conditions per place. [2024-06-20 15:50:14,150 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 40 changer transitions 0/200 dead transitions. [2024-06-20 15:50:14,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 200 transitions, 2437 flow [2024-06-20 15:50:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:50:14,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-20 15:50:14,151 INFO L175 Difference]: Start difference. First operand has 188 places, 174 transitions, 1701 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:50:14,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 200 transitions, 2437 flow [2024-06-20 15:50:14,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 200 transitions, 2271 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:14,249 INFO L231 Difference]: Finished difference. Result has 192 places, 183 transitions, 1811 flow [2024-06-20 15:50:14,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=192, PETRI_TRANSITIONS=183} [2024-06-20 15:50:14,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-20 15:50:14,251 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 183 transitions, 1811 flow [2024-06-20 15:50:14,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:14,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:14,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:14,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 15:50:14,252 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)] === [2024-06-20 15:50:14,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash 161457404, now seen corresponding path program 5 times [2024-06-20 15:50:14,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:14,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733987706] [2024-06-20 15:50:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:14,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:15,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:15,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733987706] [2024-06-20 15:50:15,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733987706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:15,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:15,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042671710] [2024-06-20 15:50:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:15,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:15,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:15,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:15,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:15,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 183 transitions, 1811 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:15,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:15,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:15,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:15,737 INFO L124 PetriNetUnfolderBase]: 402/731 cut-off events. [2024-06-20 15:50:15,738 INFO L125 PetriNetUnfolderBase]: For 52865/52865 co-relation queries the response was YES. [2024-06-20 15:50:15,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 731 events. 402/731 cut-off events. For 52865/52865 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3372 event pairs, 38 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 5818. Up to 598 conditions per place. [2024-06-20 15:50:15,743 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 36 changer transitions 0/201 dead transitions. [2024-06-20 15:50:15,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 2345 flow [2024-06-20 15:50:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:50:15,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:50:15,744 INFO L175 Difference]: Start difference. First operand has 192 places, 183 transitions, 1811 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:50:15,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 2345 flow [2024-06-20 15:50:15,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 201 transitions, 2269 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-20 15:50:15,838 INFO L231 Difference]: Finished difference. Result has 197 places, 185 transitions, 1882 flow [2024-06-20 15:50:15,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1882, PETRI_PLACES=197, PETRI_TRANSITIONS=185} [2024-06-20 15:50:15,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-20 15:50:15,838 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 185 transitions, 1882 flow [2024-06-20 15:50:15,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:15,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:15,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:15,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 15:50:15,839 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)] === [2024-06-20 15:50:15,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1747882060, now seen corresponding path program 1 times [2024-06-20 15:50:15,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979986033] [2024-06-20 15:50:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:17,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:17,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979986033] [2024-06-20 15:50:17,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979986033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:17,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:17,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:17,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73760251] [2024-06-20 15:50:17,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:17,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:17,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:17,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:17,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 185 transitions, 1882 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:17,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:17,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:17,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:17,713 INFO L124 PetriNetUnfolderBase]: 405/736 cut-off events. [2024-06-20 15:50:17,714 INFO L125 PetriNetUnfolderBase]: For 54382/54382 co-relation queries the response was YES. [2024-06-20 15:50:17,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6019 conditions, 736 events. 405/736 cut-off events. For 54382/54382 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3388 event pairs, 35 based on Foata normal form. 1/735 useless extension candidates. Maximal degree in co-relation 5923. Up to 656 conditions per place. [2024-06-20 15:50:17,720 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 21 changer transitions 0/203 dead transitions. [2024-06-20 15:50:17,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 203 transitions, 2374 flow [2024-06-20 15:50:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 15:50:17,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-20 15:50:17,721 INFO L175 Difference]: Start difference. First operand has 197 places, 185 transitions, 1882 flow. Second operand 10 states and 121 transitions. [2024-06-20 15:50:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 203 transitions, 2374 flow [2024-06-20 15:50:17,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 203 transitions, 2243 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:17,823 INFO L231 Difference]: Finished difference. Result has 199 places, 187 transitions, 1846 flow [2024-06-20 15:50:17,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1846, PETRI_PLACES=199, PETRI_TRANSITIONS=187} [2024-06-20 15:50:17,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-20 15:50:17,824 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 187 transitions, 1846 flow [2024-06-20 15:50:17,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:17,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:17,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:17,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 15:50:17,824 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)] === [2024-06-20 15:50:17,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1479150471, now seen corresponding path program 4 times [2024-06-20 15:50:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:17,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479087769] [2024-06-20 15:50:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:17,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:18,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:18,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479087769] [2024-06-20 15:50:18,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479087769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:18,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:18,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:18,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202669129] [2024-06-20 15:50:18,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:18,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:18,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:18,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 187 transitions, 1846 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:18,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:18,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:18,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:18,980 INFO L124 PetriNetUnfolderBase]: 411/746 cut-off events. [2024-06-20 15:50:18,981 INFO L125 PetriNetUnfolderBase]: For 57152/57152 co-relation queries the response was YES. [2024-06-20 15:50:18,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6086 conditions, 746 events. 411/746 cut-off events. For 57152/57152 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3429 event pairs, 38 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5989. Up to 577 conditions per place. [2024-06-20 15:50:18,998 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 50 changer transitions 0/208 dead transitions. [2024-06-20 15:50:19,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 208 transitions, 2544 flow [2024-06-20 15:50:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 15:50:19,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-20 15:50:19,007 INFO L175 Difference]: Start difference. First operand has 199 places, 187 transitions, 1846 flow. Second operand 10 states and 131 transitions. [2024-06-20 15:50:19,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 208 transitions, 2544 flow [2024-06-20 15:50:19,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 208 transitions, 2441 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:19,124 INFO L231 Difference]: Finished difference. Result has 202 places, 191 transitions, 1968 flow [2024-06-20 15:50:19,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1968, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2024-06-20 15:50:19,124 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-20 15:50:19,124 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 1968 flow [2024-06-20 15:50:19,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:19,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:19,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:19,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 15:50:19,125 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:50:19,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1756178642, now seen corresponding path program 2 times [2024-06-20 15:50:19,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:19,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922325122] [2024-06-20 15:50:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:19,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:20,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:20,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922325122] [2024-06-20 15:50:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922325122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:20,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:20,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480726206] [2024-06-20 15:50:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:20,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:20,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:20,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:20,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:20,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 1968 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:20,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:20,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:20,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:20,629 INFO L124 PetriNetUnfolderBase]: 419/759 cut-off events. [2024-06-20 15:50:20,629 INFO L125 PetriNetUnfolderBase]: For 60281/60281 co-relation queries the response was YES. [2024-06-20 15:50:20,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6426 conditions, 759 events. 419/759 cut-off events. For 60281/60281 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3490 event pairs, 36 based on Foata normal form. 1/758 useless extension candidates. Maximal degree in co-relation 6327. Up to 636 conditions per place. [2024-06-20 15:50:20,635 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 169 selfloop transitions, 36 changer transitions 0/208 dead transitions. [2024-06-20 15:50:20,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 208 transitions, 2638 flow [2024-06-20 15:50:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:50:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:50:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 15:50:20,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-20 15:50:20,636 INFO L175 Difference]: Start difference. First operand has 202 places, 191 transitions, 1968 flow. Second operand 9 states and 115 transitions. [2024-06-20 15:50:20,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 208 transitions, 2638 flow [2024-06-20 15:50:20,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 208 transitions, 2536 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-20 15:50:20,748 INFO L231 Difference]: Finished difference. Result has 205 places, 195 transitions, 2049 flow [2024-06-20 15:50:20,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2049, PETRI_PLACES=205, PETRI_TRANSITIONS=195} [2024-06-20 15:50:20,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-20 15:50:20,749 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 195 transitions, 2049 flow [2024-06-20 15:50:20,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:20,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:20,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:20,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 15:50:20,749 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)] === [2024-06-20 15:50:20,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1487446991, now seen corresponding path program 1 times [2024-06-20 15:50:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954392773] [2024-06-20 15:50:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:22,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954392773] [2024-06-20 15:50:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954392773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:22,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124976831] [2024-06-20 15:50:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:22,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:22,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:22,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:50:22,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 195 transitions, 2049 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:22,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:22,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:50:22,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:22,414 INFO L124 PetriNetUnfolderBase]: 401/741 cut-off events. [2024-06-20 15:50:22,414 INFO L125 PetriNetUnfolderBase]: For 64766/64770 co-relation queries the response was YES. [2024-06-20 15:50:22,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6338 conditions, 741 events. 401/741 cut-off events. For 64766/64770 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3501 event pairs, 38 based on Foata normal form. 6/744 useless extension candidates. Maximal degree in co-relation 6237. Up to 607 conditions per place. [2024-06-20 15:50:22,420 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 162 selfloop transitions, 17 changer transitions 0/210 dead transitions. [2024-06-20 15:50:22,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 210 transitions, 2465 flow [2024-06-20 15:50:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:50:22,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 15:50:22,424 INFO L175 Difference]: Start difference. First operand has 205 places, 195 transitions, 2049 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:50:22,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 210 transitions, 2465 flow [2024-06-20 15:50:22,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 210 transitions, 2377 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 15:50:22,569 INFO L231 Difference]: Finished difference. Result has 209 places, 196 transitions, 2021 flow [2024-06-20 15:50:22,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2021, PETRI_PLACES=209, PETRI_TRANSITIONS=196} [2024-06-20 15:50:22,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-20 15:50:22,570 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 196 transitions, 2021 flow [2024-06-20 15:50:22,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:22,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:22,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:22,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 15:50:22,570 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)] === [2024-06-20 15:50:22,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1756188221, now seen corresponding path program 5 times [2024-06-20 15:50:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98974866] [2024-06-20 15:50:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:23,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:23,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98974866] [2024-06-20 15:50:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98974866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:23,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:23,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945128151] [2024-06-20 15:50:23,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:23,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:23,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 196 transitions, 2021 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:23,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:23,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:23,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:23,916 INFO L124 PetriNetUnfolderBase]: 449/810 cut-off events. [2024-06-20 15:50:23,916 INFO L125 PetriNetUnfolderBase]: For 72990/72990 co-relation queries the response was YES. [2024-06-20 15:50:23,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 810 events. 449/810 cut-off events. For 72990/72990 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3776 event pairs, 46 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 7103. Up to 542 conditions per place. [2024-06-20 15:50:23,923 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 72 changer transitions 0/217 dead transitions. [2024-06-20 15:50:23,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 217 transitions, 2811 flow [2024-06-20 15:50:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-20 15:50:23,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-20 15:50:23,924 INFO L175 Difference]: Start difference. First operand has 209 places, 196 transitions, 2021 flow. Second operand 10 states and 133 transitions. [2024-06-20 15:50:23,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 217 transitions, 2811 flow [2024-06-20 15:50:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 217 transitions, 2721 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-20 15:50:24,040 INFO L231 Difference]: Finished difference. Result has 210 places, 201 transitions, 2265 flow [2024-06-20 15:50:24,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2265, PETRI_PLACES=210, PETRI_TRANSITIONS=201} [2024-06-20 15:50:24,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-20 15:50:24,040 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 201 transitions, 2265 flow [2024-06-20 15:50:24,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:24,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:24,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:24,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 15:50:24,041 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)] === [2024-06-20 15:50:24,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1494873661, now seen corresponding path program 6 times [2024-06-20 15:50:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429094908] [2024-06-20 15:50:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429094908] [2024-06-20 15:50:24,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429094908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:24,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:24,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:24,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181059211] [2024-06-20 15:50:24,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:24,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:24,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:24,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:24,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 201 transitions, 2265 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:24,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:24,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:24,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:25,304 INFO L124 PetriNetUnfolderBase]: 480/860 cut-off events. [2024-06-20 15:50:25,304 INFO L125 PetriNetUnfolderBase]: For 87987/87987 co-relation queries the response was YES. [2024-06-20 15:50:25,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8372 conditions, 860 events. 480/860 cut-off events. For 87987/87987 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4058 event pairs, 48 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 8269. Up to 684 conditions per place. [2024-06-20 15:50:25,312 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 40 changer transitions 0/228 dead transitions. [2024-06-20 15:50:25,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 228 transitions, 3354 flow [2024-06-20 15:50:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-20 15:50:25,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-20 15:50:25,314 INFO L175 Difference]: Start difference. First operand has 210 places, 201 transitions, 2265 flow. Second operand 10 states and 134 transitions. [2024-06-20 15:50:25,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 228 transitions, 3354 flow [2024-06-20 15:50:25,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 228 transitions, 3204 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-20 15:50:25,463 INFO L231 Difference]: Finished difference. Result has 215 places, 209 transitions, 2450 flow [2024-06-20 15:50:25,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2450, PETRI_PLACES=215, PETRI_TRANSITIONS=209} [2024-06-20 15:50:25,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-20 15:50:25,463 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 209 transitions, 2450 flow [2024-06-20 15:50:25,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:25,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:25,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:25,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 15:50:25,464 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)] === [2024-06-20 15:50:25,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1763597531, now seen corresponding path program 7 times [2024-06-20 15:50:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:25,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963449831] [2024-06-20 15:50:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:25,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963449831] [2024-06-20 15:50:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963449831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:26,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:26,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:26,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816684702] [2024-06-20 15:50:26,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:26,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:26,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:26,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 209 transitions, 2450 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:26,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:26,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:26,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:26,828 INFO L124 PetriNetUnfolderBase]: 478/857 cut-off events. [2024-06-20 15:50:26,828 INFO L125 PetriNetUnfolderBase]: For 85469/85469 co-relation queries the response was YES. [2024-06-20 15:50:26,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 857 events. 478/857 cut-off events. For 85469/85469 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4047 event pairs, 45 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 8152. Up to 707 conditions per place. [2024-06-20 15:50:26,835 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 39 changer transitions 0/230 dead transitions. [2024-06-20 15:50:26,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 230 transitions, 3309 flow [2024-06-20 15:50:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 15:50:26,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:50:26,836 INFO L175 Difference]: Start difference. First operand has 215 places, 209 transitions, 2450 flow. Second operand 10 states and 130 transitions. [2024-06-20 15:50:26,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 230 transitions, 3309 flow [2024-06-20 15:50:27,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 230 transitions, 3169 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-20 15:50:27,014 INFO L231 Difference]: Finished difference. Result has 221 places, 215 transitions, 2583 flow [2024-06-20 15:50:27,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2583, PETRI_PLACES=221, PETRI_TRANSITIONS=215} [2024-06-20 15:50:27,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-20 15:50:27,014 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 215 transitions, 2583 flow [2024-06-20 15:50:27,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:27,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:27,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:27,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 15:50:27,015 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)] === [2024-06-20 15:50:27,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1756455131, now seen corresponding path program 8 times [2024-06-20 15:50:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:27,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861098074] [2024-06-20 15:50:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:28,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:28,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861098074] [2024-06-20 15:50:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861098074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:28,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:28,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:28,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130855094] [2024-06-20 15:50:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:28,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:28,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:28,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 215 transitions, 2583 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:28,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:28,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:28,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:28,529 INFO L124 PetriNetUnfolderBase]: 484/867 cut-off events. [2024-06-20 15:50:28,529 INFO L125 PetriNetUnfolderBase]: For 89261/89261 co-relation queries the response was YES. [2024-06-20 15:50:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8408 conditions, 867 events. 484/867 cut-off events. For 89261/89261 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4117 event pairs, 47 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 8299. Up to 574 conditions per place. [2024-06-20 15:50:28,537 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 80 changer transitions 0/235 dead transitions. [2024-06-20 15:50:28,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 235 transitions, 3603 flow [2024-06-20 15:50:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-20 15:50:28,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-20 15:50:28,538 INFO L175 Difference]: Start difference. First operand has 221 places, 215 transitions, 2583 flow. Second operand 10 states and 136 transitions. [2024-06-20 15:50:28,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 235 transitions, 3603 flow [2024-06-20 15:50:28,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 235 transitions, 3523 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-20 15:50:28,711 INFO L231 Difference]: Finished difference. Result has 225 places, 217 transitions, 2724 flow [2024-06-20 15:50:28,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2724, PETRI_PLACES=225, PETRI_TRANSITIONS=217} [2024-06-20 15:50:28,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-20 15:50:28,712 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 217 transitions, 2724 flow [2024-06-20 15:50:28,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:28,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:28,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:28,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 15:50:28,713 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)] === [2024-06-20 15:50:28,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:28,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1082288516, now seen corresponding path program 3 times [2024-06-20 15:50:28,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:28,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770783341] [2024-06-20 15:50:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:28,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:30,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:30,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770783341] [2024-06-20 15:50:30,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770783341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:30,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:30,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160689847] [2024-06-20 15:50:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:30,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:30,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 217 transitions, 2724 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:30,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:30,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:30,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:30,523 INFO L124 PetriNetUnfolderBase]: 482/863 cut-off events. [2024-06-20 15:50:30,523 INFO L125 PetriNetUnfolderBase]: For 88146/88146 co-relation queries the response was YES. [2024-06-20 15:50:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8479 conditions, 863 events. 482/863 cut-off events. For 88146/88146 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4072 event pairs, 42 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 8368. Up to 775 conditions per place. [2024-06-20 15:50:30,531 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 23 changer transitions 0/230 dead transitions. [2024-06-20 15:50:30,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 230 transitions, 3214 flow [2024-06-20 15:50:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 15:50:30,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 15:50:30,532 INFO L175 Difference]: Start difference. First operand has 225 places, 217 transitions, 2724 flow. Second operand 10 states and 120 transitions. [2024-06-20 15:50:30,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 230 transitions, 3214 flow [2024-06-20 15:50:30,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 230 transitions, 2919 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-20 15:50:30,682 INFO L231 Difference]: Finished difference. Result has 225 places, 217 transitions, 2480 flow [2024-06-20 15:50:30,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=225, PETRI_TRANSITIONS=217} [2024-06-20 15:50:30,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-20 15:50:30,682 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 217 transitions, 2480 flow [2024-06-20 15:50:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:30,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:30,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 15:50:30,683 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)] === [2024-06-20 15:50:30,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1075146612, now seen corresponding path program 6 times [2024-06-20 15:50:30,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63467887] [2024-06-20 15:50:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:31,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63467887] [2024-06-20 15:50:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63467887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:31,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:31,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88346590] [2024-06-20 15:50:31,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:31,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:31,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:31,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:31,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 217 transitions, 2480 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:31,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:31,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:31,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:32,245 INFO L124 PetriNetUnfolderBase]: 490/881 cut-off events. [2024-06-20 15:50:32,246 INFO L125 PetriNetUnfolderBase]: For 91788/91788 co-relation queries the response was YES. [2024-06-20 15:50:32,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8333 conditions, 881 events. 490/881 cut-off events. For 91788/91788 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4213 event pairs, 47 based on Foata normal form. 1/880 useless extension candidates. Maximal degree in co-relation 8225. Up to 699 conditions per place. [2024-06-20 15:50:32,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 50 changer transitions 0/235 dead transitions. [2024-06-20 15:50:32,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 235 transitions, 3292 flow [2024-06-20 15:50:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:50:32,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 15:50:32,256 INFO L175 Difference]: Start difference. First operand has 225 places, 217 transitions, 2480 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:50:32,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 235 transitions, 3292 flow [2024-06-20 15:50:32,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 235 transitions, 3213 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:32,426 INFO L231 Difference]: Finished difference. Result has 227 places, 221 transitions, 2654 flow [2024-06-20 15:50:32,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2654, PETRI_PLACES=227, PETRI_TRANSITIONS=221} [2024-06-20 15:50:32,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-20 15:50:32,427 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 221 transitions, 2654 flow [2024-06-20 15:50:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:32,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:32,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:32,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 15:50:32,428 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)] === [2024-06-20 15:50:32,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1075138955, now seen corresponding path program 9 times [2024-06-20 15:50:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61826217] [2024-06-20 15:50:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:33,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:33,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61826217] [2024-06-20 15:50:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61826217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:33,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:33,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942523465] [2024-06-20 15:50:33,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:33,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:33,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:33,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 221 transitions, 2654 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:33,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:33,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:33,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:33,708 INFO L124 PetriNetUnfolderBase]: 487/877 cut-off events. [2024-06-20 15:50:33,708 INFO L125 PetriNetUnfolderBase]: For 93022/93022 co-relation queries the response was YES. [2024-06-20 15:50:33,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8265 conditions, 877 events. 487/877 cut-off events. For 93022/93022 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4203 event pairs, 46 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 8156. Up to 585 conditions per place. [2024-06-20 15:50:33,717 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 78 changer transitions 0/239 dead transitions. [2024-06-20 15:50:33,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 239 transitions, 3520 flow [2024-06-20 15:50:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-20 15:50:33,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-20 15:50:33,718 INFO L175 Difference]: Start difference. First operand has 227 places, 221 transitions, 2654 flow. Second operand 10 states and 136 transitions. [2024-06-20 15:50:33,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 239 transitions, 3520 flow [2024-06-20 15:50:33,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 239 transitions, 3380 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-20 15:50:33,894 INFO L231 Difference]: Finished difference. Result has 231 places, 221 transitions, 2676 flow [2024-06-20 15:50:33,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2676, PETRI_PLACES=231, PETRI_TRANSITIONS=221} [2024-06-20 15:50:33,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-20 15:50:33,895 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 221 transitions, 2676 flow [2024-06-20 15:50:33,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:33,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:33,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:33,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 15:50:33,896 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)] === [2024-06-20 15:50:33,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1763605188, now seen corresponding path program 7 times [2024-06-20 15:50:33,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:33,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864661144] [2024-06-20 15:50:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:33,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:35,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:35,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864661144] [2024-06-20 15:50:35,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864661144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:35,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:35,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125287116] [2024-06-20 15:50:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:35,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:35,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:35,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 221 transitions, 2676 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:35,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:35,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:35,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:35,457 INFO L124 PetriNetUnfolderBase]: 490/884 cut-off events. [2024-06-20 15:50:35,457 INFO L125 PetriNetUnfolderBase]: For 93353/93353 co-relation queries the response was YES. [2024-06-20 15:50:35,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8423 conditions, 884 events. 490/884 cut-off events. For 93353/93353 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4269 event pairs, 46 based on Foata normal form. 1/883 useless extension candidates. Maximal degree in co-relation 8312. Up to 738 conditions per place. [2024-06-20 15:50:35,465 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 200 selfloop transitions, 35 changer transitions 0/238 dead transitions. [2024-06-20 15:50:35,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 238 transitions, 3464 flow [2024-06-20 15:50:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 15:50:35,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:50:35,466 INFO L175 Difference]: Start difference. First operand has 231 places, 221 transitions, 2676 flow. Second operand 10 states and 128 transitions. [2024-06-20 15:50:35,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 238 transitions, 3464 flow [2024-06-20 15:50:35,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 238 transitions, 3306 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:35,636 INFO L231 Difference]: Finished difference. Result has 233 places, 223 transitions, 2667 flow [2024-06-20 15:50:35,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2667, PETRI_PLACES=233, PETRI_TRANSITIONS=223} [2024-06-20 15:50:35,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-20 15:50:35,637 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 223 transitions, 2667 flow [2024-06-20 15:50:35,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:35,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:35,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:35,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 15:50:35,638 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)] === [2024-06-20 15:50:35,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:35,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1495075471, now seen corresponding path program 10 times [2024-06-20 15:50:35,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:35,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799053367] [2024-06-20 15:50:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:35,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799053367] [2024-06-20 15:50:36,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799053367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:36,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:36,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144047229] [2024-06-20 15:50:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:36,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:36,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:36,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:36,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 223 transitions, 2667 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:36,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:36,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:36,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:36,935 INFO L124 PetriNetUnfolderBase]: 482/872 cut-off events. [2024-06-20 15:50:36,935 INFO L125 PetriNetUnfolderBase]: For 92936/92936 co-relation queries the response was YES. [2024-06-20 15:50:36,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 872 events. 482/872 cut-off events. For 92936/92936 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4204 event pairs, 44 based on Foata normal form. 4/874 useless extension candidates. Maximal degree in co-relation 7832. Up to 727 conditions per place. [2024-06-20 15:50:36,944 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 34 changer transitions 0/238 dead transitions. [2024-06-20 15:50:36,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 238 transitions, 3254 flow [2024-06-20 15:50:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:50:36,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 15:50:36,945 INFO L175 Difference]: Start difference. First operand has 233 places, 223 transitions, 2667 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:50:36,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 238 transitions, 3254 flow [2024-06-20 15:50:37,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 238 transitions, 2971 flow, removed 98 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:37,126 INFO L231 Difference]: Finished difference. Result has 235 places, 223 transitions, 2468 flow [2024-06-20 15:50:37,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2468, PETRI_PLACES=235, PETRI_TRANSITIONS=223} [2024-06-20 15:50:37,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-20 15:50:37,127 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 223 transitions, 2468 flow [2024-06-20 15:50:37,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:37,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:37,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:37,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 15:50:37,127 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)] === [2024-06-20 15:50:37,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1756447412, now seen corresponding path program 4 times [2024-06-20 15:50:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:37,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046196117] [2024-06-20 15:50:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:38,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046196117] [2024-06-20 15:50:38,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046196117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:38,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:38,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:50:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133842548] [2024-06-20 15:50:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:38,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:50:38,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:50:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:50:38,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:38,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 223 transitions, 2468 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:38,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:38,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:38,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:38,417 INFO L124 PetriNetUnfolderBase]: 479/866 cut-off events. [2024-06-20 15:50:38,418 INFO L125 PetriNetUnfolderBase]: For 83705/83705 co-relation queries the response was YES. [2024-06-20 15:50:38,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7650 conditions, 866 events. 479/866 cut-off events. For 83705/83705 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4172 event pairs, 39 based on Foata normal form. 1/865 useless extension candidates. Maximal degree in co-relation 7537. Up to 737 conditions per place. [2024-06-20 15:50:38,426 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 196 selfloop transitions, 36 changer transitions 0/235 dead transitions. [2024-06-20 15:50:38,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 235 transitions, 2966 flow [2024-06-20 15:50:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:50:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:50:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:50:38,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 15:50:38,427 INFO L175 Difference]: Start difference. First operand has 235 places, 223 transitions, 2468 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:50:38,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 235 transitions, 2966 flow [2024-06-20 15:50:38,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 235 transitions, 2855 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-20 15:50:38,619 INFO L231 Difference]: Finished difference. Result has 235 places, 223 transitions, 2435 flow [2024-06-20 15:50:38,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2435, PETRI_PLACES=235, PETRI_TRANSITIONS=223} [2024-06-20 15:50:38,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-20 15:50:38,621 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 223 transitions, 2435 flow [2024-06-20 15:50:38,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:38,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:38,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:38,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 15:50:38,621 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)] === [2024-06-20 15:50:38,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1763806998, now seen corresponding path program 8 times [2024-06-20 15:50:38,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:38,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425232111] [2024-06-20 15:50:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:39,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:39,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425232111] [2024-06-20 15:50:39,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425232111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:39,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:39,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147698460] [2024-06-20 15:50:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:39,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:39,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:39,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 223 transitions, 2435 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:39,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:39,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:39,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:40,307 INFO L124 PetriNetUnfolderBase]: 477/864 cut-off events. [2024-06-20 15:50:40,307 INFO L125 PetriNetUnfolderBase]: For 82953/82953 co-relation queries the response was YES. [2024-06-20 15:50:40,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7530 conditions, 864 events. 477/864 cut-off events. For 82953/82953 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4166 event pairs, 44 based on Foata normal form. 1/863 useless extension candidates. Maximal degree in co-relation 7416. Up to 728 conditions per place. [2024-06-20 15:50:40,315 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 31 changer transitions 0/237 dead transitions. [2024-06-20 15:50:40,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 237 transitions, 3005 flow [2024-06-20 15:50:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:50:40,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:50:40,317 INFO L175 Difference]: Start difference. First operand has 235 places, 223 transitions, 2435 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:50:40,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 237 transitions, 3005 flow [2024-06-20 15:50:40,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 237 transitions, 2839 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-20 15:50:40,511 INFO L231 Difference]: Finished difference. Result has 234 places, 223 transitions, 2336 flow [2024-06-20 15:50:40,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2336, PETRI_PLACES=234, PETRI_TRANSITIONS=223} [2024-06-20 15:50:40,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-20 15:50:40,512 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 223 transitions, 2336 flow [2024-06-20 15:50:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:40,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:40,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:40,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 15:50:40,512 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)] === [2024-06-20 15:50:40,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash -439170941, now seen corresponding path program 2 times [2024-06-20 15:50:40,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:40,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891277239] [2024-06-20 15:50:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:41,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891277239] [2024-06-20 15:50:41,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891277239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:41,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144116393] [2024-06-20 15:50:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:41,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:50:41,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 223 transitions, 2336 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:41,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:41,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:50:41,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:42,321 INFO L124 PetriNetUnfolderBase]: 460/851 cut-off events. [2024-06-20 15:50:42,321 INFO L125 PetriNetUnfolderBase]: For 91699/91704 co-relation queries the response was YES. [2024-06-20 15:50:42,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7532 conditions, 851 events. 460/851 cut-off events. For 91699/91704 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4217 event pairs, 44 based on Foata normal form. 5/851 useless extension candidates. Maximal degree in co-relation 7418. Up to 699 conditions per place. [2024-06-20 15:50:42,329 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 18 changer transitions 0/239 dead transitions. [2024-06-20 15:50:42,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 239 transitions, 2972 flow [2024-06-20 15:50:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:50:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:50:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:50:42,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:50:42,330 INFO L175 Difference]: Start difference. First operand has 234 places, 223 transitions, 2336 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:50:42,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 239 transitions, 2972 flow [2024-06-20 15:50:42,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 239 transitions, 2899 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 15:50:42,548 INFO L231 Difference]: Finished difference. Result has 236 places, 225 transitions, 2349 flow [2024-06-20 15:50:42,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2349, PETRI_PLACES=236, PETRI_TRANSITIONS=225} [2024-06-20 15:50:42,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-20 15:50:42,549 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 225 transitions, 2349 flow [2024-06-20 15:50:42,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:42,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:42,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:42,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 15:50:42,550 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)] === [2024-06-20 15:50:42,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:42,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1255601302, now seen corresponding path program 5 times [2024-06-20 15:50:42,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:42,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499889496] [2024-06-20 15:50:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:42,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:43,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499889496] [2024-06-20 15:50:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499889496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:43,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446520985] [2024-06-20 15:50:43,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:43,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:43,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:43,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 225 transitions, 2349 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:43,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:43,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:43,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:44,415 INFO L124 PetriNetUnfolderBase]: 491/890 cut-off events. [2024-06-20 15:50:44,417 INFO L125 PetriNetUnfolderBase]: For 90462/90462 co-relation queries the response was YES. [2024-06-20 15:50:44,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 890 events. 491/890 cut-off events. For 90462/90462 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4341 event pairs, 51 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 7684. Up to 818 conditions per place. [2024-06-20 15:50:44,424 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2024-06-20 15:50:44,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 236 transitions, 2891 flow [2024-06-20 15:50:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:50:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:50:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-20 15:50:44,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 15:50:44,426 INFO L175 Difference]: Start difference. First operand has 236 places, 225 transitions, 2349 flow. Second operand 9 states and 108 transitions. [2024-06-20 15:50:44,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 236 transitions, 2891 flow [2024-06-20 15:50:44,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 236 transitions, 2847 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 15:50:44,637 INFO L231 Difference]: Finished difference. Result has 238 places, 227 transitions, 2404 flow [2024-06-20 15:50:44,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2404, PETRI_PLACES=238, PETRI_TRANSITIONS=227} [2024-06-20 15:50:44,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-20 15:50:44,638 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 227 transitions, 2404 flow [2024-06-20 15:50:44,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:44,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:44,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:44,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 15:50:44,638 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)] === [2024-06-20 15:50:44,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash -764307652, now seen corresponding path program 6 times [2024-06-20 15:50:44,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:44,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723471002] [2024-06-20 15:50:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723471002] [2024-06-20 15:50:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723471002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:45,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:45,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526641358] [2024-06-20 15:50:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:45,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:45,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:45,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 227 transitions, 2404 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:45,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:45,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:45,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:46,112 INFO L124 PetriNetUnfolderBase]: 494/895 cut-off events. [2024-06-20 15:50:46,112 INFO L125 PetriNetUnfolderBase]: For 93434/93437 co-relation queries the response was YES. [2024-06-20 15:50:46,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 895 events. 494/895 cut-off events. For 93434/93437 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4364 event pairs, 46 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 7782. Up to 722 conditions per place. [2024-06-20 15:50:46,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 56 changer transitions 0/240 dead transitions. [2024-06-20 15:50:46,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 240 transitions, 2966 flow [2024-06-20 15:50:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:50:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:50:46,123 INFO L175 Difference]: Start difference. First operand has 238 places, 227 transitions, 2404 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:50:46,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 240 transitions, 2966 flow [2024-06-20 15:50:46,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 240 transitions, 2891 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-20 15:50:46,333 INFO L231 Difference]: Finished difference. Result has 241 places, 229 transitions, 2508 flow [2024-06-20 15:50:46,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2508, PETRI_PLACES=241, PETRI_TRANSITIONS=229} [2024-06-20 15:50:46,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-20 15:50:46,334 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 229 transitions, 2508 flow [2024-06-20 15:50:46,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:46,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:46,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:46,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 15:50:46,334 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)] === [2024-06-20 15:50:46,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1020088086, now seen corresponding path program 9 times [2024-06-20 15:50:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:46,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236669318] [2024-06-20 15:50:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:47,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:47,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236669318] [2024-06-20 15:50:47,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236669318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:47,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:47,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89583525] [2024-06-20 15:50:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:47,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:47,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:47,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 229 transitions, 2508 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:47,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:47,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:47,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:47,902 INFO L124 PetriNetUnfolderBase]: 497/902 cut-off events. [2024-06-20 15:50:47,902 INFO L125 PetriNetUnfolderBase]: For 96254/96257 co-relation queries the response was YES. [2024-06-20 15:50:47,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8084 conditions, 902 events. 497/902 cut-off events. For 96254/96257 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4428 event pairs, 54 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 7967. Up to 749 conditions per place. [2024-06-20 15:50:47,911 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 36 changer transitions 0/243 dead transitions. [2024-06-20 15:50:47,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 243 transitions, 3160 flow [2024-06-20 15:50:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:50:47,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 15:50:47,912 INFO L175 Difference]: Start difference. First operand has 241 places, 229 transitions, 2508 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:50:47,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 243 transitions, 3160 flow [2024-06-20 15:50:48,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 243 transitions, 2997 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:48,125 INFO L231 Difference]: Finished difference. Result has 243 places, 231 transitions, 2502 flow [2024-06-20 15:50:48,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2502, PETRI_PLACES=243, PETRI_TRANSITIONS=231} [2024-06-20 15:50:48,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-20 15:50:48,126 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 231 transitions, 2502 flow [2024-06-20 15:50:48,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:48,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:48,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:48,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 15:50:48,126 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)] === [2024-06-20 15:50:48,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:48,127 INFO L85 PathProgramCache]: Analyzing trace with hash -450608701, now seen corresponding path program 11 times [2024-06-20 15:50:48,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:48,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496184299] [2024-06-20 15:50:48,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:48,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:49,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:49,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496184299] [2024-06-20 15:50:49,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496184299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:49,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:49,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93034740] [2024-06-20 15:50:49,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:49,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:49,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:49,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 231 transitions, 2502 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:49,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:49,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:49,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:49,448 INFO L124 PetriNetUnfolderBase]: 503/912 cut-off events. [2024-06-20 15:50:49,448 INFO L125 PetriNetUnfolderBase]: For 102086/102086 co-relation queries the response was YES. [2024-06-20 15:50:49,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8182 conditions, 912 events. 503/912 cut-off events. For 102086/102086 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4482 event pairs, 50 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 8064. Up to 830 conditions per place. [2024-06-20 15:50:49,457 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 19 changer transitions 0/244 dead transitions. [2024-06-20 15:50:49,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 244 transitions, 3084 flow [2024-06-20 15:50:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:50:49,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-20 15:50:49,458 INFO L175 Difference]: Start difference. First operand has 243 places, 231 transitions, 2502 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:50:49,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 244 transitions, 3084 flow [2024-06-20 15:50:49,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 244 transitions, 2943 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:49,667 INFO L231 Difference]: Finished difference. Result has 245 places, 233 transitions, 2469 flow [2024-06-20 15:50:49,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2469, PETRI_PLACES=245, PETRI_TRANSITIONS=233} [2024-06-20 15:50:49,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-20 15:50:49,668 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 233 transitions, 2469 flow [2024-06-20 15:50:49,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:49,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:49,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:49,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 15:50:49,668 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)] === [2024-06-20 15:50:49,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1181887171, now seen corresponding path program 3 times [2024-06-20 15:50:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062641053] [2024-06-20 15:50:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:51,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:51,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062641053] [2024-06-20 15:50:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062641053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:51,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:51,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177111109] [2024-06-20 15:50:51,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:51,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:51,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:51,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:51,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:50:51,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 233 transitions, 2469 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:51,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:51,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:50:51,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:51,675 INFO L124 PetriNetUnfolderBase]: 470/871 cut-off events. [2024-06-20 15:50:51,676 INFO L125 PetriNetUnfolderBase]: For 99497/99502 co-relation queries the response was YES. [2024-06-20 15:50:51,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7737 conditions, 871 events. 470/871 cut-off events. For 99497/99502 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4372 event pairs, 44 based on Foata normal form. 5/871 useless extension candidates. Maximal degree in co-relation 7618. Up to 730 conditions per place. [2024-06-20 15:50:51,683 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 194 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-06-20 15:50:51,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 245 transitions, 2919 flow [2024-06-20 15:50:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:50:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:50:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:50:51,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-20 15:50:51,684 INFO L175 Difference]: Start difference. First operand has 245 places, 233 transitions, 2469 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:50:51,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 245 transitions, 2919 flow [2024-06-20 15:50:51,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 245 transitions, 2811 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:51,897 INFO L231 Difference]: Finished difference. Result has 248 places, 233 transitions, 2399 flow [2024-06-20 15:50:51,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2399, PETRI_PLACES=248, PETRI_TRANSITIONS=233} [2024-06-20 15:50:51,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-20 15:50:51,898 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 233 transitions, 2399 flow [2024-06-20 15:50:51,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:51,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:51,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 15:50:51,899 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)] === [2024-06-20 15:50:51,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:51,899 INFO L85 PathProgramCache]: Analyzing trace with hash -764307931, now seen corresponding path program 12 times [2024-06-20 15:50:51,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:51,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736671622] [2024-06-20 15:50:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:51,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736671622] [2024-06-20 15:50:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736671622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:52,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771425295] [2024-06-20 15:50:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:52,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:52,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 233 transitions, 2399 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:52,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:52,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:52,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:53,302 INFO L124 PetriNetUnfolderBase]: 532/959 cut-off events. [2024-06-20 15:50:53,302 INFO L125 PetriNetUnfolderBase]: For 116961/116964 co-relation queries the response was YES. [2024-06-20 15:50:53,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8928 conditions, 959 events. 532/959 cut-off events. For 116961/116964 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4747 event pairs, 55 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 8808. Up to 483 conditions per place. [2024-06-20 15:50:53,311 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 148 selfloop transitions, 110 changer transitions 0/261 dead transitions. [2024-06-20 15:50:53,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 261 transitions, 3855 flow [2024-06-20 15:50:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-20 15:50:53,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-20 15:50:53,312 INFO L175 Difference]: Start difference. First operand has 248 places, 233 transitions, 2399 flow. Second operand 10 states and 140 transitions. [2024-06-20 15:50:53,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 261 transitions, 3855 flow [2024-06-20 15:50:53,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 261 transitions, 3813 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-20 15:50:53,560 INFO L231 Difference]: Finished difference. Result has 249 places, 243 transitions, 3007 flow [2024-06-20 15:50:53,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3007, PETRI_PLACES=249, PETRI_TRANSITIONS=243} [2024-06-20 15:50:53,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-20 15:50:53,561 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 243 transitions, 3007 flow [2024-06-20 15:50:53,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:53,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:53,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:53,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 15:50:53,561 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)] === [2024-06-20 15:50:53,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:53,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1020087869, now seen corresponding path program 13 times [2024-06-20 15:50:53,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:53,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973642159] [2024-06-20 15:50:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:54,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:54,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973642159] [2024-06-20 15:50:54,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973642159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:54,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157072039] [2024-06-20 15:50:54,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:54,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:54,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:54,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 243 transitions, 3007 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:54,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:54,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:54,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:54,792 INFO L124 PetriNetUnfolderBase]: 534/963 cut-off events. [2024-06-20 15:50:54,792 INFO L125 PetriNetUnfolderBase]: For 121339/121342 co-relation queries the response was YES. [2024-06-20 15:50:54,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9325 conditions, 963 events. 534/963 cut-off events. For 121339/121342 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4801 event pairs, 54 based on Foata normal form. 4/962 useless extension candidates. Maximal degree in co-relation 9202. Up to 801 conditions per place. [2024-06-20 15:50:54,800 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 37 changer transitions 0/257 dead transitions. [2024-06-20 15:50:54,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 257 transitions, 3665 flow [2024-06-20 15:50:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:50:54,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:50:54,802 INFO L175 Difference]: Start difference. First operand has 249 places, 243 transitions, 3007 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:50:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 257 transitions, 3665 flow [2024-06-20 15:50:55,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 257 transitions, 3461 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-20 15:50:55,042 INFO L231 Difference]: Finished difference. Result has 255 places, 245 transitions, 2993 flow [2024-06-20 15:50:55,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2993, PETRI_PLACES=255, PETRI_TRANSITIONS=245} [2024-06-20 15:50:55,042 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-20 15:50:55,043 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 245 transitions, 2993 flow [2024-06-20 15:50:55,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:55,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:55,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:55,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 15:50:55,043 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)] === [2024-06-20 15:50:55,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1019878340, now seen corresponding path program 7 times [2024-06-20 15:50:55,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:55,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875717100] [2024-06-20 15:50:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:56,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:56,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875717100] [2024-06-20 15:50:56,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875717100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:56,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:56,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:56,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104176654] [2024-06-20 15:50:56,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:56,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:56,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:50:56,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 245 transitions, 2993 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:56,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:56,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:50:56,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:56,826 INFO L124 PetriNetUnfolderBase]: 532/960 cut-off events. [2024-06-20 15:50:56,826 INFO L125 PetriNetUnfolderBase]: For 109144/109147 co-relation queries the response was YES. [2024-06-20 15:50:56,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8977 conditions, 960 events. 532/960 cut-off events. For 109144/109147 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4773 event pairs, 45 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 8853. Up to 854 conditions per place. [2024-06-20 15:50:56,835 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 27 changer transitions 0/256 dead transitions. [2024-06-20 15:50:56,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 256 transitions, 3529 flow [2024-06-20 15:50:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:50:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:50:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:50:56,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-20 15:50:56,837 INFO L175 Difference]: Start difference. First operand has 255 places, 245 transitions, 2993 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:50:56,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 256 transitions, 3529 flow [2024-06-20 15:50:57,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 256 transitions, 3339 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-20 15:50:57,098 INFO L231 Difference]: Finished difference. Result has 257 places, 245 transitions, 2862 flow [2024-06-20 15:50:57,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2862, PETRI_PLACES=257, PETRI_TRANSITIONS=245} [2024-06-20 15:50:57,099 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-20 15:50:57,099 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 245 transitions, 2862 flow [2024-06-20 15:50:57,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:57,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:57,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:57,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 15:50:57,100 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)] === [2024-06-20 15:50:57,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459389, now seen corresponding path program 4 times [2024-06-20 15:50:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537518716] [2024-06-20 15:50:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:50:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:50:58,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:50:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537518716] [2024-06-20 15:50:58,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537518716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:50:58,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:50:58,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:50:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749257626] [2024-06-20 15:50:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:50:58,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:50:58,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:50:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:50:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:50:58,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:50:58,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 245 transitions, 2862 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:58,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:50:58,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:50:58,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:50:58,890 INFO L124 PetriNetUnfolderBase]: 503/931 cut-off events. [2024-06-20 15:50:58,890 INFO L125 PetriNetUnfolderBase]: For 114647/114651 co-relation queries the response was YES. [2024-06-20 15:50:58,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 931 events. 503/931 cut-off events. For 114647/114651 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4779 event pairs, 43 based on Foata normal form. 5/932 useless extension candidates. Maximal degree in co-relation 8482. Up to 775 conditions per place. [2024-06-20 15:50:58,898 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 203 selfloop transitions, 19 changer transitions 0/257 dead transitions. [2024-06-20 15:50:58,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 257 transitions, 3360 flow [2024-06-20 15:50:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:50:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:50:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:50:58,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-20 15:50:58,899 INFO L175 Difference]: Start difference. First operand has 257 places, 245 transitions, 2862 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:50:58,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 257 transitions, 3360 flow [2024-06-20 15:50:59,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 257 transitions, 3275 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 15:50:59,154 INFO L231 Difference]: Finished difference. Result has 256 places, 246 transitions, 2845 flow [2024-06-20 15:50:59,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2845, PETRI_PLACES=256, PETRI_TRANSITIONS=246} [2024-06-20 15:50:59,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-20 15:50:59,155 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 246 transitions, 2845 flow [2024-06-20 15:50:59,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:50:59,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:50:59,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:50:59,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 15:50:59,155 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)] === [2024-06-20 15:50:59,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:50:59,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1019878619, now seen corresponding path program 14 times [2024-06-20 15:50:59,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:50:59,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548522372] [2024-06-20 15:50:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:50:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:50:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548522372] [2024-06-20 15:51:00,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548522372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:00,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799303003] [2024-06-20 15:51:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:00,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:00,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:00,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 246 transitions, 2845 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:00,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:00,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:00,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:00,576 INFO L124 PetriNetUnfolderBase]: 544/981 cut-off events. [2024-06-20 15:51:00,577 INFO L125 PetriNetUnfolderBase]: For 113886/113889 co-relation queries the response was YES. [2024-06-20 15:51:00,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9038 conditions, 981 events. 544/981 cut-off events. For 113886/113889 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4914 event pairs, 53 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 8912. Up to 809 conditions per place. [2024-06-20 15:51:00,586 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 44 changer transitions 0/264 dead transitions. [2024-06-20 15:51:00,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 264 transitions, 3689 flow [2024-06-20 15:51:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:51:00,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-20 15:51:00,588 INFO L175 Difference]: Start difference. First operand has 256 places, 246 transitions, 2845 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:51:00,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 264 transitions, 3689 flow [2024-06-20 15:51:00,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 264 transitions, 3626 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:00,834 INFO L231 Difference]: Finished difference. Result has 259 places, 252 transitions, 3020 flow [2024-06-20 15:51:00,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3020, PETRI_PLACES=259, PETRI_TRANSITIONS=252} [2024-06-20 15:51:00,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-20 15:51:00,834 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 252 transitions, 3020 flow [2024-06-20 15:51:00,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:00,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:00,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:00,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 15:51:00,835 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)] === [2024-06-20 15:51:00,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:00,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886276, now seen corresponding path program 10 times [2024-06-20 15:51:00,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:00,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973388191] [2024-06-20 15:51:00,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:01,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973388191] [2024-06-20 15:51:01,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973388191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:01,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:01,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:01,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75077703] [2024-06-20 15:51:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:01,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:01,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:01,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:01,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 252 transitions, 3020 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:01,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:01,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:01,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:02,292 INFO L124 PetriNetUnfolderBase]: 547/988 cut-off events. [2024-06-20 15:51:02,292 INFO L125 PetriNetUnfolderBase]: For 117248/117251 co-relation queries the response was YES. [2024-06-20 15:51:02,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9235 conditions, 988 events. 547/988 cut-off events. For 117248/117251 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4977 event pairs, 53 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 9108. Up to 824 conditions per place. [2024-06-20 15:51:02,302 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 40 changer transitions 0/265 dead transitions. [2024-06-20 15:51:02,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 265 transitions, 3654 flow [2024-06-20 15:51:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:51:02,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:51:02,303 INFO L175 Difference]: Start difference. First operand has 259 places, 252 transitions, 3020 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:51:02,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 265 transitions, 3654 flow [2024-06-20 15:51:02,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 265 transitions, 3542 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-20 15:51:02,590 INFO L231 Difference]: Finished difference. Result has 263 places, 254 transitions, 3079 flow [2024-06-20 15:51:02,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3079, PETRI_PLACES=263, PETRI_TRANSITIONS=254} [2024-06-20 15:51:02,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-20 15:51:02,590 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 254 transitions, 3079 flow [2024-06-20 15:51:02,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:02,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:02,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:02,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 15:51:02,591 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)] === [2024-06-20 15:51:02,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:02,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1514215981, now seen corresponding path program 15 times [2024-06-20 15:51:02,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:02,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410786739] [2024-06-20 15:51:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:02,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410786739] [2024-06-20 15:51:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410786739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:03,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:03,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460109660] [2024-06-20 15:51:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:03,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:03,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:03,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 254 transitions, 3079 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:03,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:03,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:03,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:03,879 INFO L124 PetriNetUnfolderBase]: 553/998 cut-off events. [2024-06-20 15:51:03,880 INFO L125 PetriNetUnfolderBase]: For 123842/123845 co-relation queries the response was YES. [2024-06-20 15:51:03,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9434 conditions, 998 events. 553/998 cut-off events. For 123842/123845 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5027 event pairs, 54 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 9305. Up to 758 conditions per place. [2024-06-20 15:51:03,889 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 58 changer transitions 0/271 dead transitions. [2024-06-20 15:51:03,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 271 transitions, 3939 flow [2024-06-20 15:51:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-20 15:51:03,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-20 15:51:03,891 INFO L175 Difference]: Start difference. First operand has 263 places, 254 transitions, 3079 flow. Second operand 10 states and 135 transitions. [2024-06-20 15:51:03,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 271 transitions, 3939 flow [2024-06-20 15:51:04,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 271 transitions, 3784 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:04,179 INFO L231 Difference]: Finished difference. Result has 265 places, 256 transitions, 3120 flow [2024-06-20 15:51:04,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3120, PETRI_PLACES=265, PETRI_TRANSITIONS=256} [2024-06-20 15:51:04,180 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-20 15:51:04,180 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 256 transitions, 3120 flow [2024-06-20 15:51:04,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:04,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:04,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:04,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 15:51:04,181 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)] === [2024-06-20 15:51:04,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886059, now seen corresponding path program 16 times [2024-06-20 15:51:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862615504] [2024-06-20 15:51:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:05,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:05,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862615504] [2024-06-20 15:51:05,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862615504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:05,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:05,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:05,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080172866] [2024-06-20 15:51:05,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:05,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:05,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:05,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 256 transitions, 3120 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:05,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:05,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:05,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:05,403 INFO L124 PetriNetUnfolderBase]: 559/1008 cut-off events. [2024-06-20 15:51:05,403 INFO L125 PetriNetUnfolderBase]: For 127387/127390 co-relation queries the response was YES. [2024-06-20 15:51:05,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9627 conditions, 1008 events. 559/1008 cut-off events. For 127387/127390 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5102 event pairs, 54 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 9497. Up to 817 conditions per place. [2024-06-20 15:51:05,414 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 49 changer transitions 0/273 dead transitions. [2024-06-20 15:51:05,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 273 transitions, 4031 flow [2024-06-20 15:51:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-20 15:51:05,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-20 15:51:05,415 INFO L175 Difference]: Start difference. First operand has 265 places, 256 transitions, 3120 flow. Second operand 10 states and 132 transitions. [2024-06-20 15:51:05,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 273 transitions, 4031 flow [2024-06-20 15:51:05,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 273 transitions, 3619 flow, removed 68 selfloop flow, removed 10 redundant places. [2024-06-20 15:51:05,667 INFO L231 Difference]: Finished difference. Result has 265 places, 260 transitions, 2978 flow [2024-06-20 15:51:05,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2978, PETRI_PLACES=265, PETRI_TRANSITIONS=260} [2024-06-20 15:51:05,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-20 15:51:05,668 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 260 transitions, 2978 flow [2024-06-20 15:51:05,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:05,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:05,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:05,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 15:51:05,669 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)] === [2024-06-20 15:51:05,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:05,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736436, now seen corresponding path program 11 times [2024-06-20 15:51:05,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:05,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199712436] [2024-06-20 15:51:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:06,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:06,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199712436] [2024-06-20 15:51:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199712436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:06,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:06,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200905992] [2024-06-20 15:51:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:06,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:06,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:06,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 260 transitions, 2978 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:06,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:06,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:06,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:07,269 INFO L124 PetriNetUnfolderBase]: 562/1015 cut-off events. [2024-06-20 15:51:07,269 INFO L125 PetriNetUnfolderBase]: For 125176/125179 co-relation queries the response was YES. [2024-06-20 15:51:07,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9321 conditions, 1015 events. 562/1015 cut-off events. For 125176/125179 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5149 event pairs, 54 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 9192. Up to 837 conditions per place. [2024-06-20 15:51:07,278 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 45 changer transitions 0/273 dead transitions. [2024-06-20 15:51:07,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 273 transitions, 3632 flow [2024-06-20 15:51:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 15:51:07,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:51:07,279 INFO L175 Difference]: Start difference. First operand has 265 places, 260 transitions, 2978 flow. Second operand 10 states and 128 transitions. [2024-06-20 15:51:07,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 273 transitions, 3632 flow [2024-06-20 15:51:07,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 273 transitions, 3521 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-20 15:51:07,579 INFO L231 Difference]: Finished difference. Result has 269 places, 262 transitions, 3052 flow [2024-06-20 15:51:07,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3052, PETRI_PLACES=269, PETRI_TRANSITIONS=262} [2024-06-20 15:51:07,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-20 15:51:07,580 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 262 transitions, 3052 flow [2024-06-20 15:51:07,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:07,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:07,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:07,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 15:51:07,580 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)] === [2024-06-20 15:51:07,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:07,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736219, now seen corresponding path program 17 times [2024-06-20 15:51:07,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:07,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309491334] [2024-06-20 15:51:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:08,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:08,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309491334] [2024-06-20 15:51:08,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309491334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:08,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:08,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:08,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292407707] [2024-06-20 15:51:08,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:08,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:08,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:08,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:08,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:08,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 262 transitions, 3052 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:08,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:08,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:08,922 INFO L124 PetriNetUnfolderBase]: 568/1025 cut-off events. [2024-06-20 15:51:08,922 INFO L125 PetriNetUnfolderBase]: For 131849/131852 co-relation queries the response was YES. [2024-06-20 15:51:08,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9534 conditions, 1025 events. 568/1025 cut-off events. For 131849/131852 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5227 event pairs, 53 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 9403. Up to 778 conditions per place. [2024-06-20 15:51:08,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 63 changer transitions 0/279 dead transitions. [2024-06-20 15:51:08,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 279 transitions, 4086 flow [2024-06-20 15:51:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-20 15:51:08,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-20 15:51:08,934 INFO L175 Difference]: Start difference. First operand has 269 places, 262 transitions, 3052 flow. Second operand 10 states and 137 transitions. [2024-06-20 15:51:08,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 279 transitions, 4086 flow [2024-06-20 15:51:09,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 279 transitions, 3917 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:09,214 INFO L231 Difference]: Finished difference. Result has 271 places, 264 transitions, 3080 flow [2024-06-20 15:51:09,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3080, PETRI_PLACES=271, PETRI_TRANSITIONS=264} [2024-06-20 15:51:09,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-20 15:51:09,215 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 264 transitions, 3080 flow [2024-06-20 15:51:09,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:09,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:09,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:09,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 15:51:09,216 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)] === [2024-06-20 15:51:09,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash -764298352, now seen corresponding path program 8 times [2024-06-20 15:51:09,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:09,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978560635] [2024-06-20 15:51:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:10,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:10,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978560635] [2024-06-20 15:51:10,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978560635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:10,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:10,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:10,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612307490] [2024-06-20 15:51:10,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:10,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:10,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:10,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:10,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 264 transitions, 3080 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:10,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:10,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:10,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:10,774 INFO L124 PetriNetUnfolderBase]: 565/1020 cut-off events. [2024-06-20 15:51:10,774 INFO L125 PetriNetUnfolderBase]: For 126628/126631 co-relation queries the response was YES. [2024-06-20 15:51:10,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9412 conditions, 1020 events. 565/1020 cut-off events. For 126628/126631 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5175 event pairs, 44 based on Foata normal form. 1/1016 useless extension candidates. Maximal degree in co-relation 9280. Up to 831 conditions per place. [2024-06-20 15:51:10,785 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 61 changer transitions 0/278 dead transitions. [2024-06-20 15:51:10,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 278 transitions, 3902 flow [2024-06-20 15:51:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:51:10,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 15:51:10,787 INFO L175 Difference]: Start difference. First operand has 271 places, 264 transitions, 3080 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:51:10,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 278 transitions, 3902 flow [2024-06-20 15:51:11,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 278 transitions, 3659 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:11,094 INFO L231 Difference]: Finished difference. Result has 274 places, 266 transitions, 3041 flow [2024-06-20 15:51:11,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3041, PETRI_PLACES=274, PETRI_TRANSITIONS=266} [2024-06-20 15:51:11,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-20 15:51:11,095 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 266 transitions, 3041 flow [2024-06-20 15:51:11,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:11,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:11,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:11,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 15:51:11,095 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)] === [2024-06-20 15:51:11,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:11,096 INFO L85 PathProgramCache]: Analyzing trace with hash -764298011, now seen corresponding path program 5 times [2024-06-20 15:51:11,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:11,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038339625] [2024-06-20 15:51:11,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:11,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:12,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:12,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038339625] [2024-06-20 15:51:12,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038339625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:12,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:12,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:12,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885870241] [2024-06-20 15:51:12,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:12,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:12,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:12,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 15:51:12,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 266 transitions, 3041 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:12,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:12,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 15:51:12,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:13,021 INFO L124 PetriNetUnfolderBase]: 530/979 cut-off events. [2024-06-20 15:51:13,021 INFO L125 PetriNetUnfolderBase]: For 126497/126501 co-relation queries the response was YES. [2024-06-20 15:51:13,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8823 conditions, 979 events. 530/979 cut-off events. For 126497/126501 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5082 event pairs, 41 based on Foata normal form. 5/980 useless extension candidates. Maximal degree in co-relation 8690. Up to 799 conditions per place. [2024-06-20 15:51:13,030 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 212 selfloop transitions, 30 changer transitions 0/278 dead transitions. [2024-06-20 15:51:13,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 278 transitions, 3557 flow [2024-06-20 15:51:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:51:13,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-20 15:51:13,031 INFO L175 Difference]: Start difference. First operand has 274 places, 266 transitions, 3041 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:51:13,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 278 transitions, 3557 flow [2024-06-20 15:51:13,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 278 transitions, 3414 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 15:51:13,279 INFO L231 Difference]: Finished difference. Result has 275 places, 266 transitions, 2962 flow [2024-06-20 15:51:13,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2962, PETRI_PLACES=275, PETRI_TRANSITIONS=266} [2024-06-20 15:51:13,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-20 15:51:13,279 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 266 transitions, 2962 flow [2024-06-20 15:51:13,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:13,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:13,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:13,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 15:51:13,280 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)] === [2024-06-20 15:51:13,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1265132438, now seen corresponding path program 12 times [2024-06-20 15:51:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:13,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043659914] [2024-06-20 15:51:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:13,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:14,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043659914] [2024-06-20 15:51:14,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043659914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:14,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:14,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:14,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194632537] [2024-06-20 15:51:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:14,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:14,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:14,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:14,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 266 transitions, 2962 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:14,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:14,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:14,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:15,252 INFO L124 PetriNetUnfolderBase]: 560/1012 cut-off events. [2024-06-20 15:51:15,253 INFO L125 PetriNetUnfolderBase]: For 119553/119556 co-relation queries the response was YES. [2024-06-20 15:51:15,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8837 conditions, 1012 events. 560/1012 cut-off events. For 119553/119556 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5141 event pairs, 52 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 8704. Up to 762 conditions per place. [2024-06-20 15:51:15,264 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 76 changer transitions 0/278 dead transitions. [2024-06-20 15:51:15,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 278 transitions, 3626 flow [2024-06-20 15:51:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:51:15,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:51:15,265 INFO L175 Difference]: Start difference. First operand has 275 places, 266 transitions, 2962 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:51:15,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 278 transitions, 3626 flow [2024-06-20 15:51:15,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 278 transitions, 3495 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-20 15:51:15,538 INFO L231 Difference]: Finished difference. Result has 274 places, 268 transitions, 3082 flow [2024-06-20 15:51:15,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2831, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3082, PETRI_PLACES=274, PETRI_TRANSITIONS=268} [2024-06-20 15:51:15,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-20 15:51:15,539 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 268 transitions, 3082 flow [2024-06-20 15:51:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:15,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:15,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 15:51:15,539 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)] === [2024-06-20 15:51:15,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash -764567401, now seen corresponding path program 18 times [2024-06-20 15:51:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:15,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610208834] [2024-06-20 15:51:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:16,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610208834] [2024-06-20 15:51:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610208834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009080769] [2024-06-20 15:51:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:16,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:16,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:16,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:16,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:16,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 268 transitions, 3082 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:16,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:16,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:16,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:16,948 INFO L124 PetriNetUnfolderBase]: 567/1024 cut-off events. [2024-06-20 15:51:16,948 INFO L125 PetriNetUnfolderBase]: For 126513/126516 co-relation queries the response was YES. [2024-06-20 15:51:16,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9041 conditions, 1024 events. 567/1024 cut-off events. For 126513/126516 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5219 event pairs, 52 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 8908. Up to 526 conditions per place. [2024-06-20 15:51:16,959 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 128 changer transitions 0/286 dead transitions. [2024-06-20 15:51:16,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 286 transitions, 4166 flow [2024-06-20 15:51:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-20 15:51:16,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-20 15:51:16,960 INFO L175 Difference]: Start difference. First operand has 274 places, 268 transitions, 3082 flow. Second operand 10 states and 138 transitions. [2024-06-20 15:51:16,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 286 transitions, 4166 flow [2024-06-20 15:51:17,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 286 transitions, 3929 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:17,239 INFO L231 Difference]: Finished difference. Result has 276 places, 270 transitions, 3161 flow [2024-06-20 15:51:17,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3161, PETRI_PLACES=276, PETRI_TRANSITIONS=270} [2024-06-20 15:51:17,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-20 15:51:17,240 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 270 transitions, 3161 flow [2024-06-20 15:51:17,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:17,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:17,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:17,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 15:51:17,241 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)] === [2024-06-20 15:51:17,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash -764574841, now seen corresponding path program 19 times [2024-06-20 15:51:17,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:17,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35024687] [2024-06-20 15:51:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:17,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:18,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:18,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:18,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35024687] [2024-06-20 15:51:18,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35024687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:18,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:18,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:18,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305917308] [2024-06-20 15:51:18,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:18,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:18,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:18,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:18,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:18,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:18,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 270 transitions, 3161 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:18,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:18,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:18,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:18,676 INFO L124 PetriNetUnfolderBase]: 565/1021 cut-off events. [2024-06-20 15:51:18,677 INFO L125 PetriNetUnfolderBase]: For 120624/120627 co-relation queries the response was YES. [2024-06-20 15:51:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9004 conditions, 1021 events. 565/1021 cut-off events. For 120624/120627 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5196 event pairs, 51 based on Foata normal form. 1/1017 useless extension candidates. Maximal degree in co-relation 8870. Up to 683 conditions per place. [2024-06-20 15:51:18,687 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 100 changer transitions 0/294 dead transitions. [2024-06-20 15:51:18,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 294 transitions, 4174 flow [2024-06-20 15:51:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 15:51:18,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-20 15:51:18,697 INFO L175 Difference]: Start difference. First operand has 276 places, 270 transitions, 3161 flow. Second operand 10 states and 131 transitions. [2024-06-20 15:51:18,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 294 transitions, 4174 flow [2024-06-20 15:51:18,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 294 transitions, 3799 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-20 15:51:18,988 INFO L231 Difference]: Finished difference. Result has 279 places, 283 transitions, 3306 flow [2024-06-20 15:51:18,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3306, PETRI_PLACES=279, PETRI_TRANSITIONS=283} [2024-06-20 15:51:18,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-20 15:51:18,988 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 283 transitions, 3306 flow [2024-06-20 15:51:18,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:18,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:18,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:18,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 15:51:18,989 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)] === [2024-06-20 15:51:18,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -764567122, now seen corresponding path program 9 times [2024-06-20 15:51:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425797945] [2024-06-20 15:51:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:20,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425797945] [2024-06-20 15:51:20,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425797945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:20,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:20,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153472441] [2024-06-20 15:51:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:20,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:20,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:20,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 283 transitions, 3306 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:20,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:20,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:20,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:20,593 INFO L124 PetriNetUnfolderBase]: 562/1016 cut-off events. [2024-06-20 15:51:20,594 INFO L125 PetriNetUnfolderBase]: For 117935/117938 co-relation queries the response was YES. [2024-06-20 15:51:20,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8872 conditions, 1016 events. 562/1016 cut-off events. For 117935/117938 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5174 event pairs, 43 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 8736. Up to 837 conditions per place. [2024-06-20 15:51:20,604 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 57 changer transitions 0/294 dead transitions. [2024-06-20 15:51:20,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 294 transitions, 3918 flow [2024-06-20 15:51:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:51:20,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 15:51:20,606 INFO L175 Difference]: Start difference. First operand has 279 places, 283 transitions, 3306 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:51:20,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 294 transitions, 3918 flow [2024-06-20 15:51:20,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 294 transitions, 3763 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-20 15:51:20,924 INFO L231 Difference]: Finished difference. Result has 284 places, 283 transitions, 3270 flow [2024-06-20 15:51:20,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3270, PETRI_PLACES=284, PETRI_TRANSITIONS=283} [2024-06-20 15:51:20,924 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-20 15:51:20,925 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 283 transitions, 3270 flow [2024-06-20 15:51:20,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:20,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:20,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:20,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 15:51:20,927 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)] === [2024-06-20 15:51:20,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728779, now seen corresponding path program 20 times [2024-06-20 15:51:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:20,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304888093] [2024-06-20 15:51:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:21,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:21,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304888093] [2024-06-20 15:51:21,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304888093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:21,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:21,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:21,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145827283] [2024-06-20 15:51:21,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:21,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:21,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:21,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:21,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:21,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:21,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 283 transitions, 3270 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:21,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:21,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:21,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:22,133 INFO L124 PetriNetUnfolderBase]: 558/1010 cut-off events. [2024-06-20 15:51:22,133 INFO L125 PetriNetUnfolderBase]: For 115512/115515 co-relation queries the response was YES. [2024-06-20 15:51:22,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8591 conditions, 1010 events. 558/1010 cut-off events. For 115512/115515 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5146 event pairs, 51 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 8453. Up to 766 conditions per place. [2024-06-20 15:51:22,144 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 64 changer transitions 0/299 dead transitions. [2024-06-20 15:51:22,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 299 transitions, 4164 flow [2024-06-20 15:51:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-20 15:51:22,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-20 15:51:22,152 INFO L175 Difference]: Start difference. First operand has 284 places, 283 transitions, 3270 flow. Second operand 10 states and 137 transitions. [2024-06-20 15:51:22,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 299 transitions, 4164 flow [2024-06-20 15:51:22,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 299 transitions, 3964 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-20 15:51:22,514 INFO L231 Difference]: Finished difference. Result has 285 places, 283 transitions, 3207 flow [2024-06-20 15:51:22,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3207, PETRI_PLACES=285, PETRI_TRANSITIONS=283} [2024-06-20 15:51:22,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-20 15:51:22,514 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 283 transitions, 3207 flow [2024-06-20 15:51:22,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:22,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:22,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:22,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 15:51:22,515 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)] === [2024-06-20 15:51:22,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash -47019049, now seen corresponding path program 1 times [2024-06-20 15:51:22,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:22,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326189756] [2024-06-20 15:51:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:22,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326189756] [2024-06-20 15:51:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326189756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:23,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:23,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453677462] [2024-06-20 15:51:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:23,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:23,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:23,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 283 transitions, 3207 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:23,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:23,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:23,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:23,849 INFO L124 PetriNetUnfolderBase]: 562/1017 cut-off events. [2024-06-20 15:51:23,849 INFO L125 PetriNetUnfolderBase]: For 118080/118080 co-relation queries the response was YES. [2024-06-20 15:51:23,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8621 conditions, 1017 events. 562/1017 cut-off events. For 118080/118080 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5203 event pairs, 16 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 8482. Up to 871 conditions per place. [2024-06-20 15:51:23,861 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 277 selfloop transitions, 27 changer transitions 0/307 dead transitions. [2024-06-20 15:51:23,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 307 transitions, 3907 flow [2024-06-20 15:51:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:51:23,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:51:23,862 INFO L175 Difference]: Start difference. First operand has 285 places, 283 transitions, 3207 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:51:23,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 307 transitions, 3907 flow [2024-06-20 15:51:24,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 307 transitions, 3771 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-20 15:51:24,166 INFO L231 Difference]: Finished difference. Result has 286 places, 284 transitions, 3155 flow [2024-06-20 15:51:24,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3155, PETRI_PLACES=286, PETRI_TRANSITIONS=284} [2024-06-20 15:51:24,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-20 15:51:24,167 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 284 transitions, 3155 flow [2024-06-20 15:51:24,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:24,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:24,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 15:51:24,167 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)] === [2024-06-20 15:51:24,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1678576319, now seen corresponding path program 2 times [2024-06-20 15:51:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:24,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627265783] [2024-06-20 15:51:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627265783] [2024-06-20 15:51:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627265783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:24,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:24,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189125880] [2024-06-20 15:51:24,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:24,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:24,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:25,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:25,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 284 transitions, 3155 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:25,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:25,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:25,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:25,482 INFO L124 PetriNetUnfolderBase]: 566/1025 cut-off events. [2024-06-20 15:51:25,483 INFO L125 PetriNetUnfolderBase]: For 120489/120489 co-relation queries the response was YES. [2024-06-20 15:51:25,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8651 conditions, 1025 events. 566/1025 cut-off events. For 120489/120489 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5261 event pairs, 33 based on Foata normal form. 2/1025 useless extension candidates. Maximal degree in co-relation 8511. Up to 895 conditions per place. [2024-06-20 15:51:25,493 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 274 selfloop transitions, 30 changer transitions 0/307 dead transitions. [2024-06-20 15:51:25,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 307 transitions, 3855 flow [2024-06-20 15:51:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:51:25,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 15:51:25,496 INFO L175 Difference]: Start difference. First operand has 286 places, 284 transitions, 3155 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:51:25,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 307 transitions, 3855 flow [2024-06-20 15:51:25,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 307 transitions, 3781 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:25,889 INFO L231 Difference]: Finished difference. Result has 288 places, 285 transitions, 3174 flow [2024-06-20 15:51:25,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3174, PETRI_PLACES=288, PETRI_TRANSITIONS=285} [2024-06-20 15:51:25,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-20 15:51:25,890 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 285 transitions, 3174 flow [2024-06-20 15:51:25,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:25,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:25,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:25,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 15:51:25,891 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)] === [2024-06-20 15:51:25,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1678571359, now seen corresponding path program 1 times [2024-06-20 15:51:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:25,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369576950] [2024-06-20 15:51:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:26,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369576950] [2024-06-20 15:51:26,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369576950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440367760] [2024-06-20 15:51:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:26,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:26,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:26,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:27,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:27,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 285 transitions, 3174 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:27,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:27,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:27,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:27,573 INFO L124 PetriNetUnfolderBase]: 572/1039 cut-off events. [2024-06-20 15:51:27,573 INFO L125 PetriNetUnfolderBase]: For 125414/125414 co-relation queries the response was YES. [2024-06-20 15:51:27,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8802 conditions, 1039 events. 572/1039 cut-off events. For 125414/125414 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5371 event pairs, 31 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 8661. Up to 899 conditions per place. [2024-06-20 15:51:27,584 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 35 changer transitions 0/310 dead transitions. [2024-06-20 15:51:27,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 310 transitions, 3942 flow [2024-06-20 15:51:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:51:27,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-20 15:51:27,586 INFO L175 Difference]: Start difference. First operand has 288 places, 285 transitions, 3174 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:51:27,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 310 transitions, 3942 flow [2024-06-20 15:51:28,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 3861 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:28,011 INFO L231 Difference]: Finished difference. Result has 291 places, 287 transitions, 3245 flow [2024-06-20 15:51:28,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3245, PETRI_PLACES=291, PETRI_TRANSITIONS=287} [2024-06-20 15:51:28,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-20 15:51:28,012 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 287 transitions, 3245 flow [2024-06-20 15:51:28,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:28,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:28,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:28,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 15:51:28,013 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)] === [2024-06-20 15:51:28,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1563285149, now seen corresponding path program 3 times [2024-06-20 15:51:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:28,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119147375] [2024-06-20 15:51:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119147375] [2024-06-20 15:51:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119147375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:28,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903704199] [2024-06-20 15:51:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:28,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:28,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 287 transitions, 3245 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:28,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:28,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:28,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:29,256 INFO L124 PetriNetUnfolderBase]: 576/1046 cut-off events. [2024-06-20 15:51:29,256 INFO L125 PetriNetUnfolderBase]: For 128329/128329 co-relation queries the response was YES. [2024-06-20 15:51:29,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8887 conditions, 1046 events. 576/1046 cut-off events. For 128329/128329 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5420 event pairs, 31 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 8745. Up to 932 conditions per place. [2024-06-20 15:51:29,267 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 282 selfloop transitions, 24 changer transitions 0/309 dead transitions. [2024-06-20 15:51:29,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 309 transitions, 3960 flow [2024-06-20 15:51:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:51:29,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 15:51:29,268 INFO L175 Difference]: Start difference. First operand has 291 places, 287 transitions, 3245 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:51:29,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 309 transitions, 3960 flow [2024-06-20 15:51:29,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 309 transitions, 3826 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-20 15:51:29,647 INFO L231 Difference]: Finished difference. Result has 293 places, 290 transitions, 3219 flow [2024-06-20 15:51:29,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3219, PETRI_PLACES=293, PETRI_TRANSITIONS=290} [2024-06-20 15:51:29,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-20 15:51:29,647 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 290 transitions, 3219 flow [2024-06-20 15:51:29,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:29,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:29,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:29,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 15:51:29,648 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)] === [2024-06-20 15:51:29,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1822364681, now seen corresponding path program 2 times [2024-06-20 15:51:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:29,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583732053] [2024-06-20 15:51:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:30,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:30,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583732053] [2024-06-20 15:51:30,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583732053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:30,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:30,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:30,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131697278] [2024-06-20 15:51:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:30,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:30,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:30,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 290 transitions, 3219 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:30,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:30,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:30,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:31,110 INFO L124 PetriNetUnfolderBase]: 592/1074 cut-off events. [2024-06-20 15:51:31,111 INFO L125 PetriNetUnfolderBase]: For 142205/142205 co-relation queries the response was YES. [2024-06-20 15:51:31,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9383 conditions, 1074 events. 592/1074 cut-off events. For 142205/142205 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5611 event pairs, 32 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 9239. Up to 926 conditions per place. [2024-06-20 15:51:31,122 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 278 selfloop transitions, 36 changer transitions 0/317 dead transitions. [2024-06-20 15:51:31,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 317 transitions, 4299 flow [2024-06-20 15:51:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:51:31,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 15:51:31,123 INFO L175 Difference]: Start difference. First operand has 293 places, 290 transitions, 3219 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:51:31,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 317 transitions, 4299 flow [2024-06-20 15:51:31,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 317 transitions, 4227 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-20 15:51:31,522 INFO L231 Difference]: Finished difference. Result has 297 places, 295 transitions, 3400 flow [2024-06-20 15:51:31,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3400, PETRI_PLACES=297, PETRI_TRANSITIONS=295} [2024-06-20 15:51:31,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-20 15:51:31,523 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 295 transitions, 3400 flow [2024-06-20 15:51:31,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:31,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:31,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:31,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 15:51:31,523 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)] === [2024-06-20 15:51:31,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 537723395, now seen corresponding path program 3 times [2024-06-20 15:51:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:31,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331071574] [2024-06-20 15:51:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331071574] [2024-06-20 15:51:32,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331071574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:32,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:32,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902546094] [2024-06-20 15:51:32,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:32,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:32,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:32,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:32,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 295 transitions, 3400 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:32,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:32,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:33,366 INFO L124 PetriNetUnfolderBase]: 590/1071 cut-off events. [2024-06-20 15:51:33,366 INFO L125 PetriNetUnfolderBase]: For 134830/134830 co-relation queries the response was YES. [2024-06-20 15:51:33,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9297 conditions, 1071 events. 590/1071 cut-off events. For 134830/134830 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5600 event pairs, 32 based on Foata normal form. 1/1069 useless extension candidates. Maximal degree in co-relation 9152. Up to 925 conditions per place. [2024-06-20 15:51:33,377 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 277 selfloop transitions, 38 changer transitions 0/318 dead transitions. [2024-06-20 15:51:33,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 318 transitions, 4370 flow [2024-06-20 15:51:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 15:51:33,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-20 15:51:33,378 INFO L175 Difference]: Start difference. First operand has 297 places, 295 transitions, 3400 flow. Second operand 11 states and 141 transitions. [2024-06-20 15:51:33,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 318 transitions, 4370 flow [2024-06-20 15:51:33,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 318 transitions, 4235 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-20 15:51:33,809 INFO L231 Difference]: Finished difference. Result has 301 places, 297 transitions, 3418 flow [2024-06-20 15:51:33,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3418, PETRI_PLACES=301, PETRI_TRANSITIONS=297} [2024-06-20 15:51:33,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-20 15:51:33,810 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 297 transitions, 3418 flow [2024-06-20 15:51:33,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:33,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:33,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 15:51:33,811 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)] === [2024-06-20 15:51:33,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1397646015, now seen corresponding path program 4 times [2024-06-20 15:51:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:33,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762573903] [2024-06-20 15:51:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762573903] [2024-06-20 15:51:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762573903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:34,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:34,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335488086] [2024-06-20 15:51:34,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:34,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:34,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:34,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:34,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:34,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 297 transitions, 3418 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:34,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:34,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:34,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:35,085 INFO L124 PetriNetUnfolderBase]: 594/1080 cut-off events. [2024-06-20 15:51:35,085 INFO L125 PetriNetUnfolderBase]: For 141553/141553 co-relation queries the response was YES. [2024-06-20 15:51:35,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9325 conditions, 1080 events. 594/1080 cut-off events. For 141553/141553 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5668 event pairs, 35 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 9178. Up to 950 conditions per place. [2024-06-20 15:51:35,097 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 286 selfloop transitions, 27 changer transitions 0/316 dead transitions. [2024-06-20 15:51:35,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 316 transitions, 4139 flow [2024-06-20 15:51:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:51:35,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 15:51:35,099 INFO L175 Difference]: Start difference. First operand has 301 places, 297 transitions, 3418 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:51:35,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 316 transitions, 4139 flow [2024-06-20 15:51:35,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 316 transitions, 4019 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:35,680 INFO L231 Difference]: Finished difference. Result has 304 places, 300 transitions, 3414 flow [2024-06-20 15:51:35,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3414, PETRI_PLACES=304, PETRI_TRANSITIONS=300} [2024-06-20 15:51:35,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-20 15:51:35,681 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 300 transitions, 3414 flow [2024-06-20 15:51:35,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:35,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:35,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:35,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 15:51:35,682 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)] === [2024-06-20 15:51:35,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1391205455, now seen corresponding path program 4 times [2024-06-20 15:51:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:35,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398882556] [2024-06-20 15:51:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:35,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398882556] [2024-06-20 15:51:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398882556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:36,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:36,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379876959] [2024-06-20 15:51:36,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:36,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:36,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:36,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:36,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 300 transitions, 3414 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:36,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:36,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:36,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:37,422 INFO L124 PetriNetUnfolderBase]: 631/1149 cut-off events. [2024-06-20 15:51:37,422 INFO L125 PetriNetUnfolderBase]: For 179140/179140 co-relation queries the response was YES. [2024-06-20 15:51:37,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10858 conditions, 1149 events. 631/1149 cut-off events. For 179140/179140 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6114 event pairs, 36 based on Foata normal form. 2/1148 useless extension candidates. Maximal degree in co-relation 10709. Up to 887 conditions per place. [2024-06-20 15:51:37,436 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 269 selfloop transitions, 59 changer transitions 0/331 dead transitions. [2024-06-20 15:51:37,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 331 transitions, 5132 flow [2024-06-20 15:51:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-20 15:51:37,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-20 15:51:37,437 INFO L175 Difference]: Start difference. First operand has 304 places, 300 transitions, 3414 flow. Second operand 11 states and 147 transitions. [2024-06-20 15:51:37,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 331 transitions, 5132 flow [2024-06-20 15:51:38,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 331 transitions, 5050 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-20 15:51:38,119 INFO L231 Difference]: Finished difference. Result has 308 places, 309 transitions, 3803 flow [2024-06-20 15:51:38,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3803, PETRI_PLACES=308, PETRI_TRANSITIONS=309} [2024-06-20 15:51:38,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-20 15:51:38,120 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 309 transitions, 3803 flow [2024-06-20 15:51:38,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:38,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:38,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:38,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 15:51:38,120 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)] === [2024-06-20 15:51:38,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash -914861111, now seen corresponding path program 5 times [2024-06-20 15:51:38,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60653032] [2024-06-20 15:51:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60653032] [2024-06-20 15:51:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60653032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:39,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:39,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788600947] [2024-06-20 15:51:39,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:39,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:39,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:39,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:39,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 309 transitions, 3803 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:39,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:39,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:39,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:40,118 INFO L124 PetriNetUnfolderBase]: 634/1157 cut-off events. [2024-06-20 15:51:40,118 INFO L125 PetriNetUnfolderBase]: For 179140/179140 co-relation queries the response was YES. [2024-06-20 15:51:40,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11061 conditions, 1157 events. 634/1157 cut-off events. For 179140/179140 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6195 event pairs, 37 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 10911. Up to 972 conditions per place. [2024-06-20 15:51:40,132 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 286 selfloop transitions, 43 changer transitions 0/332 dead transitions. [2024-06-20 15:51:40,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 332 transitions, 4881 flow [2024-06-20 15:51:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:40,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:51:40,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 15:51:40,133 INFO L175 Difference]: Start difference. First operand has 308 places, 309 transitions, 3803 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:51:40,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 332 transitions, 4881 flow [2024-06-20 15:51:40,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 332 transitions, 4727 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-20 15:51:40,765 INFO L231 Difference]: Finished difference. Result has 315 places, 314 transitions, 3917 flow [2024-06-20 15:51:40,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3917, PETRI_PLACES=315, PETRI_TRANSITIONS=314} [2024-06-20 15:51:40,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-20 15:51:40,766 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 314 transitions, 3917 flow [2024-06-20 15:51:40,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:40,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:40,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:40,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 15:51:40,767 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)] === [2024-06-20 15:51:40,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash -914854601, now seen corresponding path program 6 times [2024-06-20 15:51:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973194247] [2024-06-20 15:51:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973194247] [2024-06-20 15:51:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973194247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:42,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100946313] [2024-06-20 15:51:42,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:42,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:42,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:42,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 314 transitions, 3917 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:42,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:42,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:42,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:42,786 INFO L124 PetriNetUnfolderBase]: 632/1153 cut-off events. [2024-06-20 15:51:42,786 INFO L125 PetriNetUnfolderBase]: For 174919/174919 co-relation queries the response was YES. [2024-06-20 15:51:42,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 1153 events. 632/1153 cut-off events. For 174919/174919 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6169 event pairs, 35 based on Foata normal form. 1/1151 useless extension candidates. Maximal degree in co-relation 10658. Up to 997 conditions per place. [2024-06-20 15:51:42,800 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 291 selfloop transitions, 36 changer transitions 0/330 dead transitions. [2024-06-20 15:51:42,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 330 transitions, 4615 flow [2024-06-20 15:51:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:51:42,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:51:42,801 INFO L175 Difference]: Start difference. First operand has 315 places, 314 transitions, 3917 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:51:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 330 transitions, 4615 flow [2024-06-20 15:51:43,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 330 transitions, 4429 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-20 15:51:43,263 INFO L231 Difference]: Finished difference. Result has 320 places, 314 transitions, 3808 flow [2024-06-20 15:51:43,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3731, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3808, PETRI_PLACES=320, PETRI_TRANSITIONS=314} [2024-06-20 15:51:43,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-20 15:51:43,264 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 314 transitions, 3808 flow [2024-06-20 15:51:43,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:43,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:43,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:43,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 15:51:43,264 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)] === [2024-06-20 15:51:43,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1650229869, now seen corresponding path program 1 times [2024-06-20 15:51:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:43,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621700534] [2024-06-20 15:51:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:43,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:44,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621700534] [2024-06-20 15:51:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621700534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:44,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:44,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:44,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197810875] [2024-06-20 15:51:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:44,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:44,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:44,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:44,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:44,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 314 transitions, 3808 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:44,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:44,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:44,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:45,090 INFO L124 PetriNetUnfolderBase]: 636/1163 cut-off events. [2024-06-20 15:51:45,091 INFO L125 PetriNetUnfolderBase]: For 183520/183520 co-relation queries the response was YES. [2024-06-20 15:51:45,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10848 conditions, 1163 events. 636/1163 cut-off events. For 183520/183520 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6246 event pairs, 33 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 10693. Up to 1046 conditions per place. [2024-06-20 15:51:45,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 308 selfloop transitions, 22 changer transitions 0/333 dead transitions. [2024-06-20 15:51:45,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 333 transitions, 4560 flow [2024-06-20 15:51:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 15:51:45,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-20 15:51:45,105 INFO L175 Difference]: Start difference. First operand has 320 places, 314 transitions, 3808 flow. Second operand 11 states and 131 transitions. [2024-06-20 15:51:45,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 333 transitions, 4560 flow [2024-06-20 15:51:45,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 333 transitions, 4488 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 15:51:45,561 INFO L231 Difference]: Finished difference. Result has 322 places, 315 transitions, 3826 flow [2024-06-20 15:51:45,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3826, PETRI_PLACES=322, PETRI_TRANSITIONS=315} [2024-06-20 15:51:45,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-20 15:51:45,562 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 315 transitions, 3826 flow [2024-06-20 15:51:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:45,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:45,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:45,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 15:51:45,562 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)] === [2024-06-20 15:51:45,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash -554102187, now seen corresponding path program 7 times [2024-06-20 15:51:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:45,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309474412] [2024-06-20 15:51:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:45,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:46,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:46,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309474412] [2024-06-20 15:51:46,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309474412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:46,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:46,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069857635] [2024-06-20 15:51:46,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:46,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:46,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:46,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:46,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 315 transitions, 3826 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:46,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:46,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:46,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:47,151 INFO L124 PetriNetUnfolderBase]: 637/1165 cut-off events. [2024-06-20 15:51:47,152 INFO L125 PetriNetUnfolderBase]: For 181076/181076 co-relation queries the response was YES. [2024-06-20 15:51:47,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 1165 events. 637/1165 cut-off events. For 181076/181076 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6256 event pairs, 35 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 10639. Up to 899 conditions per place. [2024-06-20 15:51:47,166 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 267 selfloop transitions, 67 changer transitions 0/337 dead transitions. [2024-06-20 15:51:47,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 337 transitions, 5090 flow [2024-06-20 15:51:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:51:47,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-20 15:51:47,172 INFO L175 Difference]: Start difference. First operand has 322 places, 315 transitions, 3826 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:51:47,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 337 transitions, 5090 flow [2024-06-20 15:51:47,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 337 transitions, 5010 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-20 15:51:47,650 INFO L231 Difference]: Finished difference. Result has 324 places, 318 transitions, 3989 flow [2024-06-20 15:51:47,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3989, PETRI_PLACES=324, PETRI_TRANSITIONS=318} [2024-06-20 15:51:47,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-20 15:51:47,651 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 318 transitions, 3989 flow [2024-06-20 15:51:47,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:47,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:47,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:47,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 15:51:47,652 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)] === [2024-06-20 15:51:47,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:47,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1391205207, now seen corresponding path program 1 times [2024-06-20 15:51:47,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:47,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273450027] [2024-06-20 15:51:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:48,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273450027] [2024-06-20 15:51:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273450027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:48,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:48,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273741653] [2024-06-20 15:51:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:48,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:49,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:49,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 318 transitions, 3989 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:49,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:49,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:49,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:49,545 INFO L124 PetriNetUnfolderBase]: 634/1159 cut-off events. [2024-06-20 15:51:49,545 INFO L125 PetriNetUnfolderBase]: For 172860/172860 co-relation queries the response was YES. [2024-06-20 15:51:49,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10739 conditions, 1159 events. 634/1159 cut-off events. For 172860/172860 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6225 event pairs, 35 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 10582. Up to 981 conditions per place. [2024-06-20 15:51:49,560 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 286 selfloop transitions, 45 changer transitions 0/334 dead transitions. [2024-06-20 15:51:49,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 334 transitions, 4695 flow [2024-06-20 15:51:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:51:49,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-20 15:51:49,561 INFO L175 Difference]: Start difference. First operand has 324 places, 318 transitions, 3989 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:51:49,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 334 transitions, 4695 flow [2024-06-20 15:51:50,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 334 transitions, 4477 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:50,009 INFO L231 Difference]: Finished difference. Result has 327 places, 318 transitions, 3866 flow [2024-06-20 15:51:50,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3866, PETRI_PLACES=327, PETRI_TRANSITIONS=318} [2024-06-20 15:51:50,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-20 15:51:50,009 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 318 transitions, 3866 flow [2024-06-20 15:51:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:50,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:50,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:50,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 15:51:50,010 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)] === [2024-06-20 15:51:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1391211965, now seen corresponding path program 8 times [2024-06-20 15:51:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784180761] [2024-06-20 15:51:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:51,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:51,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784180761] [2024-06-20 15:51:51,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784180761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:51,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:51,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:51,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606713849] [2024-06-20 15:51:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:51,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:51,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:51,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:51,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:51,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:51,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 318 transitions, 3866 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:51,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:51,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:51,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:51,897 INFO L124 PetriNetUnfolderBase]: 632/1154 cut-off events. [2024-06-20 15:51:51,898 INFO L125 PetriNetUnfolderBase]: For 167786/167786 co-relation queries the response was YES. [2024-06-20 15:51:51,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10410 conditions, 1154 events. 632/1154 cut-off events. For 167786/167786 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6151 event pairs, 35 based on Foata normal form. 1/1152 useless extension candidates. Maximal degree in co-relation 10252. Up to 895 conditions per place. [2024-06-20 15:51:51,912 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 267 selfloop transitions, 68 changer transitions 0/338 dead transitions. [2024-06-20 15:51:51,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 338 transitions, 5091 flow [2024-06-20 15:51:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-20 15:51:51,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-20 15:51:51,913 INFO L175 Difference]: Start difference. First operand has 327 places, 318 transitions, 3866 flow. Second operand 11 states and 145 transitions. [2024-06-20 15:51:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 338 transitions, 5091 flow [2024-06-20 15:51:52,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 338 transitions, 4972 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 15:51:52,449 INFO L231 Difference]: Finished difference. Result has 328 places, 320 transitions, 3965 flow [2024-06-20 15:51:52,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3747, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3965, PETRI_PLACES=328, PETRI_TRANSITIONS=320} [2024-06-20 15:51:52,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-20 15:51:52,450 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 320 transitions, 3965 flow [2024-06-20 15:51:52,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:52,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:52,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:52,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 15:51:52,451 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)] === [2024-06-20 15:51:52,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash 897117045, now seen corresponding path program 5 times [2024-06-20 15:51:52,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:52,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484741038] [2024-06-20 15:51:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:52,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:53,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484741038] [2024-06-20 15:51:53,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484741038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:53,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:53,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:51:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301379862] [2024-06-20 15:51:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:51:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:53,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:51:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:51:53,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:53,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 320 transitions, 3965 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:53,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:53,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:53,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:53,916 INFO L124 PetriNetUnfolderBase]: 636/1163 cut-off events. [2024-06-20 15:51:53,916 INFO L125 PetriNetUnfolderBase]: For 177811/177811 co-relation queries the response was YES. [2024-06-20 15:51:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10568 conditions, 1163 events. 636/1163 cut-off events. For 177811/177811 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6220 event pairs, 39 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 10409. Up to 1008 conditions per place. [2024-06-20 15:51:53,928 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 302 selfloop transitions, 31 changer transitions 0/336 dead transitions. [2024-06-20 15:51:53,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 336 transitions, 4715 flow [2024-06-20 15:51:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:51:53,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-20 15:51:53,929 INFO L175 Difference]: Start difference. First operand has 328 places, 320 transitions, 3965 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:51:53,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 336 transitions, 4715 flow [2024-06-20 15:51:54,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 336 transitions, 4531 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-20 15:51:54,449 INFO L231 Difference]: Finished difference. Result has 331 places, 323 transitions, 3906 flow [2024-06-20 15:51:54,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3781, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3906, PETRI_PLACES=331, PETRI_TRANSITIONS=323} [2024-06-20 15:51:54,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-20 15:51:54,450 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 323 transitions, 3906 flow [2024-06-20 15:51:54,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:54,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:54,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:54,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 15:51:54,451 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)] === [2024-06-20 15:51:54,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1133476855, now seen corresponding path program 9 times [2024-06-20 15:51:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:54,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133622155] [2024-06-20 15:51:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133622155] [2024-06-20 15:51:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133622155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:55,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102224322] [2024-06-20 15:51:55,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:55,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:55,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:55,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:55,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 323 transitions, 3906 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:55,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:55,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:55,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:56,184 INFO L124 PetriNetUnfolderBase]: 644/1180 cut-off events. [2024-06-20 15:51:56,184 INFO L125 PetriNetUnfolderBase]: For 181549/181549 co-relation queries the response was YES. [2024-06-20 15:51:56,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 1180 events. 644/1180 cut-off events. For 181549/181549 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6355 event pairs, 38 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 10634. Up to 874 conditions per place. [2024-06-20 15:51:56,198 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 89 changer transitions 0/346 dead transitions. [2024-06-20 15:51:56,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 346 transitions, 5067 flow [2024-06-20 15:51:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:51:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:51:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:51:56,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 15:51:56,199 INFO L175 Difference]: Start difference. First operand has 331 places, 323 transitions, 3906 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:51:56,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 346 transitions, 5067 flow [2024-06-20 15:51:56,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 346 transitions, 4973 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-20 15:51:56,754 INFO L231 Difference]: Finished difference. Result has 336 places, 332 transitions, 4275 flow [2024-06-20 15:51:56,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4275, PETRI_PLACES=336, PETRI_TRANSITIONS=332} [2024-06-20 15:51:56,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-20 15:51:56,754 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 332 transitions, 4275 flow [2024-06-20 15:51:56,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:56,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:56,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:56,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 15:51:56,755 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)] === [2024-06-20 15:51:56,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1133485783, now seen corresponding path program 2 times [2024-06-20 15:51:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44275616] [2024-06-20 15:51:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:51:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:51:58,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:51:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44275616] [2024-06-20 15:51:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44275616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:51:58,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:51:58,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:51:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322797663] [2024-06-20 15:51:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:51:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:51:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:51:58,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:51:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:51:58,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:51:58,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 332 transitions, 4275 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:58,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:51:58,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:51:58,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:51:58,576 INFO L124 PetriNetUnfolderBase]: 648/1187 cut-off events. [2024-06-20 15:51:58,576 INFO L125 PetriNetUnfolderBase]: For 191822/191822 co-relation queries the response was YES. [2024-06-20 15:51:58,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11103 conditions, 1187 events. 648/1187 cut-off events. For 191822/191822 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6416 event pairs, 35 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 10940. Up to 1026 conditions per place. [2024-06-20 15:51:58,591 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 39 changer transitions 0/347 dead transitions. [2024-06-20 15:51:58,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 347 transitions, 5043 flow [2024-06-20 15:51:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:51:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:51:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:51:58,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 15:51:58,592 INFO L175 Difference]: Start difference. First operand has 336 places, 332 transitions, 4275 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:51:58,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 347 transitions, 5043 flow [2024-06-20 15:51:59,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 347 transitions, 4865 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-20 15:51:59,136 INFO L231 Difference]: Finished difference. Result has 340 places, 333 transitions, 4223 flow [2024-06-20 15:51:59,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4097, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4223, PETRI_PLACES=340, PETRI_TRANSITIONS=333} [2024-06-20 15:51:59,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-20 15:51:59,137 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 333 transitions, 4223 flow [2024-06-20 15:51:59,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:51:59,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:51:59,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:51:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 15:51:59,137 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)] === [2024-06-20 15:51:59,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:51:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1393048295, now seen corresponding path program 3 times [2024-06-20 15:51:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:51:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309527784] [2024-06-20 15:51:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:51:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:51:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:00,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:00,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309527784] [2024-06-20 15:52:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309527784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:00,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:00,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:00,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806322288] [2024-06-20 15:52:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:00,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:00,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:00,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:00,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:00,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 333 transitions, 4223 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:00,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:00,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:00,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:01,079 INFO L124 PetriNetUnfolderBase]: 659/1206 cut-off events. [2024-06-20 15:52:01,079 INFO L125 PetriNetUnfolderBase]: For 208204/208204 co-relation queries the response was YES. [2024-06-20 15:52:01,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11545 conditions, 1206 events. 659/1206 cut-off events. For 208204/208204 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6543 event pairs, 35 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 11380. Up to 1016 conditions per place. [2024-06-20 15:52:01,091 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 307 selfloop transitions, 41 changer transitions 0/351 dead transitions. [2024-06-20 15:52:01,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 351 transitions, 5273 flow [2024-06-20 15:52:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:52:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:52:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:52:01,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:52:01,092 INFO L175 Difference]: Start difference. First operand has 340 places, 333 transitions, 4223 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:52:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 351 transitions, 5273 flow [2024-06-20 15:52:01,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 351 transitions, 5157 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:01,665 INFO L231 Difference]: Finished difference. Result has 342 places, 335 transitions, 4283 flow [2024-06-20 15:52:01,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4107, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4283, PETRI_PLACES=342, PETRI_TRANSITIONS=335} [2024-06-20 15:52:01,665 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-20 15:52:01,665 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 335 transitions, 4283 flow [2024-06-20 15:52:01,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:01,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:01,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:01,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 15:52:01,666 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)] === [2024-06-20 15:52:01,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1030194453, now seen corresponding path program 10 times [2024-06-20 15:52:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844011874] [2024-06-20 15:52:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:02,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:02,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844011874] [2024-06-20 15:52:02,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844011874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:02,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:02,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:02,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576267104] [2024-06-20 15:52:02,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:02,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:03,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:03,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 335 transitions, 4283 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:03,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:03,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:03,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:03,641 INFO L124 PetriNetUnfolderBase]: 682/1254 cut-off events. [2024-06-20 15:52:03,641 INFO L125 PetriNetUnfolderBase]: For 233865/233865 co-relation queries the response was YES. [2024-06-20 15:52:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12605 conditions, 1254 events. 682/1254 cut-off events. For 233865/233865 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6861 event pairs, 42 based on Foata normal form. 1/1253 useless extension candidates. Maximal degree in co-relation 12439. Up to 810 conditions per place. [2024-06-20 15:52:03,658 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 251 selfloop transitions, 107 changer transitions 0/361 dead transitions. [2024-06-20 15:52:03,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 361 transitions, 6121 flow [2024-06-20 15:52:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-20 15:52:03,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-20 15:52:03,659 INFO L175 Difference]: Start difference. First operand has 342 places, 335 transitions, 4283 flow. Second operand 11 states and 148 transitions. [2024-06-20 15:52:03,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 361 transitions, 6121 flow [2024-06-20 15:52:04,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 361 transitions, 6017 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-20 15:52:04,382 INFO L231 Difference]: Finished difference. Result has 347 places, 345 transitions, 4810 flow [2024-06-20 15:52:04,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4179, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4810, PETRI_PLACES=347, PETRI_TRANSITIONS=345} [2024-06-20 15:52:04,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-20 15:52:04,383 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 345 transitions, 4810 flow [2024-06-20 15:52:04,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:04,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:04,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 15:52:04,383 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)] === [2024-06-20 15:52:04,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1125202645, now seen corresponding path program 11 times [2024-06-20 15:52:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:04,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324340230] [2024-06-20 15:52:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:05,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324340230] [2024-06-20 15:52:05,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324340230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:05,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078457020] [2024-06-20 15:52:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:05,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:05,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:05,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 345 transitions, 4810 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:05,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:05,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:05,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:06,445 INFO L124 PetriNetUnfolderBase]: 685/1257 cut-off events. [2024-06-20 15:52:06,446 INFO L125 PetriNetUnfolderBase]: For 237858/237858 co-relation queries the response was YES. [2024-06-20 15:52:06,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12852 conditions, 1257 events. 685/1257 cut-off events. For 237858/237858 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6886 event pairs, 41 based on Foata normal form. 1/1256 useless extension candidates. Maximal degree in co-relation 12684. Up to 941 conditions per place. [2024-06-20 15:52:06,461 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 85 changer transitions 0/363 dead transitions. [2024-06-20 15:52:06,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 363 transitions, 6128 flow [2024-06-20 15:52:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 15:52:06,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:52:06,462 INFO L175 Difference]: Start difference. First operand has 347 places, 345 transitions, 4810 flow. Second operand 11 states and 143 transitions. [2024-06-20 15:52:06,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 363 transitions, 6128 flow [2024-06-20 15:52:07,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 363 transitions, 5955 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-20 15:52:07,254 INFO L231 Difference]: Finished difference. Result has 353 places, 348 transitions, 4918 flow [2024-06-20 15:52:07,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4918, PETRI_PLACES=353, PETRI_TRANSITIONS=348} [2024-06-20 15:52:07,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-20 15:52:07,254 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 348 transitions, 4918 flow [2024-06-20 15:52:07,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:07,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:07,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:07,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 15:52:07,255 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)] === [2024-06-20 15:52:07,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1125442213, now seen corresponding path program 4 times [2024-06-20 15:52:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964833726] [2024-06-20 15:52:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:07,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:08,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964833726] [2024-06-20 15:52:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964833726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:08,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693145898] [2024-06-20 15:52:08,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:08,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:08,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:08,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 348 transitions, 4918 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:08,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:08,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:08,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:08,965 INFO L124 PetriNetUnfolderBase]: 689/1264 cut-off events. [2024-06-20 15:52:08,965 INFO L125 PetriNetUnfolderBase]: For 247462/247462 co-relation queries the response was YES. [2024-06-20 15:52:08,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12967 conditions, 1264 events. 689/1264 cut-off events. For 247462/247462 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6938 event pairs, 38 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 12797. Up to 1097 conditions per place. [2024-06-20 15:52:08,982 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 323 selfloop transitions, 37 changer transitions 0/363 dead transitions. [2024-06-20 15:52:08,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 363 transitions, 5710 flow [2024-06-20 15:52:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:52:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:52:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:52:08,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:52:08,983 INFO L175 Difference]: Start difference. First operand has 353 places, 348 transitions, 4918 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:52:08,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 363 transitions, 5710 flow [2024-06-20 15:52:09,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 363 transitions, 5479 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:09,738 INFO L231 Difference]: Finished difference. Result has 355 places, 349 transitions, 4801 flow [2024-06-20 15:52:09,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4801, PETRI_PLACES=355, PETRI_TRANSITIONS=349} [2024-06-20 15:52:09,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-20 15:52:09,739 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 349 transitions, 4801 flow [2024-06-20 15:52:09,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:09,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:09,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:09,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 15:52:09,739 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)] === [2024-06-20 15:52:09,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:09,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1125433285, now seen corresponding path program 12 times [2024-06-20 15:52:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:09,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409676504] [2024-06-20 15:52:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:09,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409676504] [2024-06-20 15:52:10,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409676504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:10,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:10,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:10,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143538270] [2024-06-20 15:52:10,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:10,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:10,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:11,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:11,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 349 transitions, 4801 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:11,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:11,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:11,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:11,513 INFO L124 PetriNetUnfolderBase]: 687/1266 cut-off events. [2024-06-20 15:52:11,513 INFO L125 PetriNetUnfolderBase]: For 239410/239410 co-relation queries the response was YES. [2024-06-20 15:52:11,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12591 conditions, 1266 events. 687/1266 cut-off events. For 239410/239410 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6979 event pairs, 41 based on Foata normal form. 1/1265 useless extension candidates. Maximal degree in co-relation 12422. Up to 947 conditions per place. [2024-06-20 15:52:11,527 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 84 changer transitions 0/363 dead transitions. [2024-06-20 15:52:11,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 363 transitions, 5787 flow [2024-06-20 15:52:11,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 15:52:11,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:52:11,528 INFO L175 Difference]: Start difference. First operand has 355 places, 349 transitions, 4801 flow. Second operand 11 states and 143 transitions. [2024-06-20 15:52:11,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 363 transitions, 5787 flow [2024-06-20 15:52:12,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 363 transitions, 5619 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:12,231 INFO L231 Difference]: Finished difference. Result has 358 places, 349 transitions, 4806 flow [2024-06-20 15:52:12,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4806, PETRI_PLACES=358, PETRI_TRANSITIONS=349} [2024-06-20 15:52:12,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-20 15:52:12,231 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 349 transitions, 4806 flow [2024-06-20 15:52:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:12,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:12,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:12,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 15:52:12,232 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)] === [2024-06-20 15:52:12,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1162821587, now seen corresponding path program 13 times [2024-06-20 15:52:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:12,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412409212] [2024-06-20 15:52:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:12,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:13,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:13,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412409212] [2024-06-20 15:52:13,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412409212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:13,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:13,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057620184] [2024-06-20 15:52:13,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:13,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:13,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:13,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:13,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:13,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:13,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 349 transitions, 4806 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:13,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:13,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:13,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:13,941 INFO L124 PetriNetUnfolderBase]: 713/1310 cut-off events. [2024-06-20 15:52:13,941 INFO L125 PetriNetUnfolderBase]: For 279192/279192 co-relation queries the response was YES. [2024-06-20 15:52:13,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13815 conditions, 1310 events. 713/1310 cut-off events. For 279192/279192 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7259 event pairs, 43 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 13645. Up to 1052 conditions per place. [2024-06-20 15:52:13,959 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 318 selfloop transitions, 57 changer transitions 0/378 dead transitions. [2024-06-20 15:52:13,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 378 transitions, 6827 flow [2024-06-20 15:52:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-20 15:52:13,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-20 15:52:13,960 INFO L175 Difference]: Start difference. First operand has 358 places, 349 transitions, 4806 flow. Second operand 11 states and 148 transitions. [2024-06-20 15:52:13,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 378 transitions, 6827 flow [2024-06-20 15:52:14,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 378 transitions, 6639 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-20 15:52:14,828 INFO L231 Difference]: Finished difference. Result has 360 places, 359 transitions, 5200 flow [2024-06-20 15:52:14,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5200, PETRI_PLACES=360, PETRI_TRANSITIONS=359} [2024-06-20 15:52:14,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-20 15:52:14,829 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 359 transitions, 5200 flow [2024-06-20 15:52:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:14,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:14,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:14,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 15:52:14,829 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)] === [2024-06-20 15:52:14,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1156558967, now seen corresponding path program 14 times [2024-06-20 15:52:14,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:14,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179069023] [2024-06-20 15:52:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:14,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:16,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:16,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179069023] [2024-06-20 15:52:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179069023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:16,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:16,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964985345] [2024-06-20 15:52:16,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:16,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:16,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:16,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 359 transitions, 5200 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:16,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:16,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:16,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:16,731 INFO L124 PetriNetUnfolderBase]: 721/1327 cut-off events. [2024-06-20 15:52:16,732 INFO L125 PetriNetUnfolderBase]: For 285223/285223 co-relation queries the response was YES. [2024-06-20 15:52:16,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14158 conditions, 1327 events. 721/1327 cut-off events. For 285223/285223 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7383 event pairs, 42 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 13987. Up to 1119 conditions per place. [2024-06-20 15:52:16,749 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 331 selfloop transitions, 46 changer transitions 0/380 dead transitions. [2024-06-20 15:52:16,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 380 transitions, 6683 flow [2024-06-20 15:52:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 15:52:16,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-20 15:52:16,750 INFO L175 Difference]: Start difference. First operand has 360 places, 359 transitions, 5200 flow. Second operand 11 states and 141 transitions. [2024-06-20 15:52:16,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 380 transitions, 6683 flow [2024-06-20 15:52:17,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 380 transitions, 6314 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:17,690 INFO L231 Difference]: Finished difference. Result has 363 places, 364 transitions, 5138 flow [2024-06-20 15:52:17,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4843, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5138, PETRI_PLACES=363, PETRI_TRANSITIONS=364} [2024-06-20 15:52:17,690 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-20 15:52:17,690 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 364 transitions, 5138 flow [2024-06-20 15:52:17,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:17,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:17,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:17,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 15:52:17,691 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)] === [2024-06-20 15:52:17,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:17,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1156565477, now seen corresponding path program 15 times [2024-06-20 15:52:17,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294147490] [2024-06-20 15:52:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294147490] [2024-06-20 15:52:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294147490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:18,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:18,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315619837] [2024-06-20 15:52:18,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:18,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:18,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:19,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:19,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 364 transitions, 5138 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:19,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:19,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:19,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:19,753 INFO L124 PetriNetUnfolderBase]: 719/1324 cut-off events. [2024-06-20 15:52:19,753 INFO L125 PetriNetUnfolderBase]: For 279991/279991 co-relation queries the response was YES. [2024-06-20 15:52:19,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13715 conditions, 1324 events. 719/1324 cut-off events. For 279991/279991 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7389 event pairs, 42 based on Foata normal form. 1/1323 useless extension candidates. Maximal degree in co-relation 13544. Up to 1134 conditions per place. [2024-06-20 15:52:19,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 335 selfloop transitions, 40 changer transitions 0/378 dead transitions. [2024-06-20 15:52:19,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 378 transitions, 5933 flow [2024-06-20 15:52:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:52:19,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:52:19,774 INFO L175 Difference]: Start difference. First operand has 363 places, 364 transitions, 5138 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:52:19,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 378 transitions, 5933 flow [2024-06-20 15:52:20,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 378 transitions, 5782 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-20 15:52:20,630 INFO L231 Difference]: Finished difference. Result has 368 places, 365 transitions, 5094 flow [2024-06-20 15:52:20,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4987, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5094, PETRI_PLACES=368, PETRI_TRANSITIONS=365} [2024-06-20 15:52:20,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-20 15:52:20,630 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 365 transitions, 5094 flow [2024-06-20 15:52:20,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:20,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:20,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:20,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 15:52:20,631 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)] === [2024-06-20 15:52:20,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1162815077, now seen corresponding path program 16 times [2024-06-20 15:52:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:20,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395010522] [2024-06-20 15:52:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:20,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:21,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395010522] [2024-06-20 15:52:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395010522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:21,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:21,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12112260] [2024-06-20 15:52:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:21,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:21,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:21,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 365 transitions, 5094 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:21,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:21,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:21,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:22,540 INFO L124 PetriNetUnfolderBase]: 717/1321 cut-off events. [2024-06-20 15:52:22,540 INFO L125 PetriNetUnfolderBase]: For 277443/277443 co-relation queries the response was YES. [2024-06-20 15:52:22,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13565 conditions, 1321 events. 717/1321 cut-off events. For 277443/277443 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7356 event pairs, 41 based on Foata normal form. 1/1320 useless extension candidates. Maximal degree in co-relation 13391. Up to 1103 conditions per place. [2024-06-20 15:52:22,558 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 325 selfloop transitions, 52 changer transitions 0/380 dead transitions. [2024-06-20 15:52:22,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 380 transitions, 6156 flow [2024-06-20 15:52:22,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:22,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 15:52:22,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-20 15:52:22,559 INFO L175 Difference]: Start difference. First operand has 368 places, 365 transitions, 5094 flow. Second operand 11 states and 141 transitions. [2024-06-20 15:52:22,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 380 transitions, 6156 flow [2024-06-20 15:52:23,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 380 transitions, 6024 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:23,442 INFO L231 Difference]: Finished difference. Result has 371 places, 366 transitions, 5105 flow [2024-06-20 15:52:23,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4962, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5105, PETRI_PLACES=371, PETRI_TRANSITIONS=366} [2024-06-20 15:52:23,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-20 15:52:23,443 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 366 transitions, 5105 flow [2024-06-20 15:52:23,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:23,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:23,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:23,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 15:52:23,443 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)] === [2024-06-20 15:52:23,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash 903788245, now seen corresponding path program 17 times [2024-06-20 15:52:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:23,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365147251] [2024-06-20 15:52:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:23,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:24,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365147251] [2024-06-20 15:52:24,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365147251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:24,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:24,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771346331] [2024-06-20 15:52:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:24,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:24,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:24,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:24,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 366 transitions, 5105 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:24,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:24,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:24,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:25,371 INFO L124 PetriNetUnfolderBase]: 792/1464 cut-off events. [2024-06-20 15:52:25,371 INFO L125 PetriNetUnfolderBase]: For 282297/282297 co-relation queries the response was YES. [2024-06-20 15:52:25,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14754 conditions, 1464 events. 792/1464 cut-off events. For 282297/282297 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8472 event pairs, 42 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 14579. Up to 1239 conditions per place. [2024-06-20 15:52:25,390 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 372 selfloop transitions, 56 changer transitions 0/431 dead transitions. [2024-06-20 15:52:25,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 431 transitions, 6910 flow [2024-06-20 15:52:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:52:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:52:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:52:25,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 15:52:25,392 INFO L175 Difference]: Start difference. First operand has 371 places, 366 transitions, 5105 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:52:25,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 431 transitions, 6910 flow [2024-06-20 15:52:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 431 transitions, 6534 flow, removed 88 selfloop flow, removed 9 redundant places. [2024-06-20 15:52:26,366 INFO L231 Difference]: Finished difference. Result has 381 places, 407 transitions, 5755 flow [2024-06-20 15:52:26,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4899, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5755, PETRI_PLACES=381, PETRI_TRANSITIONS=407} [2024-06-20 15:52:26,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-20 15:52:26,367 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 407 transitions, 5755 flow [2024-06-20 15:52:26,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:26,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:26,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 15:52:26,368 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)] === [2024-06-20 15:52:26,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash 903797173, now seen corresponding path program 5 times [2024-06-20 15:52:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592100253] [2024-06-20 15:52:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:27,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592100253] [2024-06-20 15:52:27,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592100253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:27,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:27,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:27,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310392083] [2024-06-20 15:52:27,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:27,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:27,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:27,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:27,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 407 transitions, 5755 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:27,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:27,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:27,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:28,372 INFO L124 PetriNetUnfolderBase]: 789/1458 cut-off events. [2024-06-20 15:52:28,372 INFO L125 PetriNetUnfolderBase]: For 278540/278540 co-relation queries the response was YES. [2024-06-20 15:52:28,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14356 conditions, 1458 events. 789/1458 cut-off events. For 278540/278540 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8396 event pairs, 36 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 14175. Up to 1285 conditions per place. [2024-06-20 15:52:28,392 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 386 selfloop transitions, 32 changer transitions 0/421 dead transitions. [2024-06-20 15:52:28,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 421 transitions, 6631 flow [2024-06-20 15:52:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 15:52:28,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-20 15:52:28,393 INFO L175 Difference]: Start difference. First operand has 381 places, 407 transitions, 5755 flow. Second operand 11 states and 130 transitions. [2024-06-20 15:52:28,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 421 transitions, 6631 flow [2024-06-20 15:52:29,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 421 transitions, 6505 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-20 15:52:29,486 INFO L231 Difference]: Finished difference. Result has 390 places, 407 transitions, 5697 flow [2024-06-20 15:52:29,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5629, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5697, PETRI_PLACES=390, PETRI_TRANSITIONS=407} [2024-06-20 15:52:29,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-20 15:52:29,486 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 407 transitions, 5697 flow [2024-06-20 15:52:29,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:29,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:29,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 15:52:29,487 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)] === [2024-06-20 15:52:29,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 903796863, now seen corresponding path program 2 times [2024-06-20 15:52:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400032107] [2024-06-20 15:52:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:30,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:30,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400032107] [2024-06-20 15:52:30,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400032107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:30,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:30,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:52:30,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384760564] [2024-06-20 15:52:30,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:30,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:52:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:52:30,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:52:30,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:30,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 407 transitions, 5697 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:30,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:30,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:30,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:30,972 INFO L124 PetriNetUnfolderBase]: 787/1454 cut-off events. [2024-06-20 15:52:30,972 INFO L125 PetriNetUnfolderBase]: For 267848/267848 co-relation queries the response was YES. [2024-06-20 15:52:30,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14127 conditions, 1454 events. 787/1454 cut-off events. For 267848/267848 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8369 event pairs, 40 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 13944. Up to 1167 conditions per place. [2024-06-20 15:52:30,993 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 345 selfloop transitions, 70 changer transitions 0/418 dead transitions. [2024-06-20 15:52:30,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 418 transitions, 6553 flow [2024-06-20 15:52:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:52:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:52:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 15:52:30,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-20 15:52:30,994 INFO L175 Difference]: Start difference. First operand has 390 places, 407 transitions, 5697 flow. Second operand 10 states and 131 transitions. [2024-06-20 15:52:30,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 418 transitions, 6553 flow [2024-06-20 15:52:32,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 418 transitions, 6443 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-20 15:52:32,066 INFO L231 Difference]: Finished difference. Result has 390 places, 407 transitions, 5736 flow [2024-06-20 15:52:32,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5736, PETRI_PLACES=390, PETRI_TRANSITIONS=407} [2024-06-20 15:52:32,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-20 15:52:32,068 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 407 transitions, 5736 flow [2024-06-20 15:52:32,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:32,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:32,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:32,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 15:52:32,070 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)] === [2024-06-20 15:52:32,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash -741371185, now seen corresponding path program 6 times [2024-06-20 15:52:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781199115] [2024-06-20 15:52:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:33,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:33,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781199115] [2024-06-20 15:52:33,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781199115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:33,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:33,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:33,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701270866] [2024-06-20 15:52:33,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:33,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:33,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:33,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:33,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 407 transitions, 5736 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:33,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:33,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:33,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:34,091 INFO L124 PetriNetUnfolderBase]: 797/1472 cut-off events. [2024-06-20 15:52:34,092 INFO L125 PetriNetUnfolderBase]: For 280647/280647 co-relation queries the response was YES. [2024-06-20 15:52:34,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14339 conditions, 1472 events. 797/1472 cut-off events. For 280647/280647 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8542 event pairs, 73 based on Foata normal form. 2/1472 useless extension candidates. Maximal degree in co-relation 14155. Up to 1332 conditions per place. [2024-06-20 15:52:34,111 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 398 selfloop transitions, 24 changer transitions 0/425 dead transitions. [2024-06-20 15:52:34,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 425 transitions, 6679 flow [2024-06-20 15:52:34,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:52:34,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:52:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-20 15:52:34,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35336538461538464 [2024-06-20 15:52:34,112 INFO L175 Difference]: Start difference. First operand has 390 places, 407 transitions, 5736 flow. Second operand 13 states and 147 transitions. [2024-06-20 15:52:34,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 425 transitions, 6679 flow [2024-06-20 15:52:35,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 425 transitions, 6479 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-20 15:52:35,240 INFO L231 Difference]: Finished difference. Result has 394 places, 412 transitions, 5666 flow [2024-06-20 15:52:35,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5666, PETRI_PLACES=394, PETRI_TRANSITIONS=412} [2024-06-20 15:52:35,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-20 15:52:35,241 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 412 transitions, 5666 flow [2024-06-20 15:52:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:35,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:35,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:35,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 15:52:35,242 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)] === [2024-06-20 15:52:35,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash -741360955, now seen corresponding path program 7 times [2024-06-20 15:52:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440366195] [2024-06-20 15:52:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:36,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:36,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440366195] [2024-06-20 15:52:36,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440366195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:36,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848743757] [2024-06-20 15:52:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:36,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:36,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 412 transitions, 5666 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:36,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:36,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:37,196 INFO L124 PetriNetUnfolderBase]: 808/1493 cut-off events. [2024-06-20 15:52:37,196 INFO L125 PetriNetUnfolderBase]: For 296760/296760 co-relation queries the response was YES. [2024-06-20 15:52:37,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14732 conditions, 1493 events. 808/1493 cut-off events. For 296760/296760 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8684 event pairs, 73 based on Foata normal form. 2/1493 useless extension candidates. Maximal degree in co-relation 14546. Up to 1328 conditions per place. [2024-06-20 15:52:37,216 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 400 selfloop transitions, 23 changer transitions 0/426 dead transitions. [2024-06-20 15:52:37,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 426 transitions, 6882 flow [2024-06-20 15:52:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:52:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:52:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 15:52:37,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 15:52:37,217 INFO L175 Difference]: Start difference. First operand has 394 places, 412 transitions, 5666 flow. Second operand 10 states and 120 transitions. [2024-06-20 15:52:37,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 426 transitions, 6882 flow [2024-06-20 15:52:38,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 426 transitions, 6799 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:38,277 INFO L231 Difference]: Finished difference. Result has 396 places, 414 transitions, 5731 flow [2024-06-20 15:52:38,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5583, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5731, PETRI_PLACES=396, PETRI_TRANSITIONS=414} [2024-06-20 15:52:38,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-20 15:52:38,277 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 414 transitions, 5731 flow [2024-06-20 15:52:38,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:38,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:38,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 15:52:38,278 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)] === [2024-06-20 15:52:38,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash 801417125, now seen corresponding path program 18 times [2024-06-20 15:52:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018751574] [2024-06-20 15:52:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:39,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:39,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018751574] [2024-06-20 15:52:39,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018751574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:39,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:39,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:39,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367860888] [2024-06-20 15:52:39,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:39,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:39,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:39,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 414 transitions, 5731 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:39,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:39,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:39,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:40,149 INFO L124 PetriNetUnfolderBase]: 839/1554 cut-off events. [2024-06-20 15:52:40,149 INFO L125 PetriNetUnfolderBase]: For 344418/344418 co-relation queries the response was YES. [2024-06-20 15:52:40,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16187 conditions, 1554 events. 839/1554 cut-off events. For 344418/344418 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9143 event pairs, 53 based on Foata normal form. 2/1552 useless extension candidates. Maximal degree in co-relation 16000. Up to 662 conditions per place. [2024-06-20 15:52:40,171 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 259 selfloop transitions, 182 changer transitions 0/444 dead transitions. [2024-06-20 15:52:40,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 444 transitions, 8183 flow [2024-06-20 15:52:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-20 15:52:40,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-20 15:52:40,173 INFO L175 Difference]: Start difference. First operand has 396 places, 414 transitions, 5731 flow. Second operand 11 states and 155 transitions. [2024-06-20 15:52:40,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 444 transitions, 8183 flow [2024-06-20 15:52:41,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 444 transitions, 8098 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-20 15:52:41,464 INFO L231 Difference]: Finished difference. Result has 401 places, 425 transitions, 6463 flow [2024-06-20 15:52:41,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5646, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6463, PETRI_PLACES=401, PETRI_TRANSITIONS=425} [2024-06-20 15:52:41,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-20 15:52:41,464 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 425 transitions, 6463 flow [2024-06-20 15:52:41,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:41,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:41,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 15:52:41,465 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)] === [2024-06-20 15:52:41,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1558136477, now seen corresponding path program 6 times [2024-06-20 15:52:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:41,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808136883] [2024-06-20 15:52:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:42,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808136883] [2024-06-20 15:52:42,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808136883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:42,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:42,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:52:42,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978653370] [2024-06-20 15:52:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:42,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:52:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:52:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:52:42,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:42,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 425 transitions, 6463 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:42,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:42,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:42,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:42,929 INFO L124 PetriNetUnfolderBase]: 836/1552 cut-off events. [2024-06-20 15:52:42,929 INFO L125 PetriNetUnfolderBase]: For 335609/335612 co-relation queries the response was YES. [2024-06-20 15:52:42,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16246 conditions, 1552 events. 836/1552 cut-off events. For 335609/335612 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9134 event pairs, 51 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 16057. Up to 1311 conditions per place. [2024-06-20 15:52:42,951 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 383 selfloop transitions, 50 changer transitions 0/436 dead transitions. [2024-06-20 15:52:42,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 436 transitions, 7363 flow [2024-06-20 15:52:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:52:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:52:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:52:42,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-20 15:52:42,952 INFO L175 Difference]: Start difference. First operand has 401 places, 425 transitions, 6463 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:52:42,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 436 transitions, 7363 flow [2024-06-20 15:52:44,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 436 transitions, 7139 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-20 15:52:44,231 INFO L231 Difference]: Finished difference. Result has 407 places, 426 transitions, 6355 flow [2024-06-20 15:52:44,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6240, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6355, PETRI_PLACES=407, PETRI_TRANSITIONS=426} [2024-06-20 15:52:44,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-20 15:52:44,232 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 426 transitions, 6355 flow [2024-06-20 15:52:44,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:44,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:44,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:44,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 15:52:44,233 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)] === [2024-06-20 15:52:44,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:44,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1321767739, now seen corresponding path program 8 times [2024-06-20 15:52:44,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:44,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976630566] [2024-06-20 15:52:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:44,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:45,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976630566] [2024-06-20 15:52:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976630566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:45,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:45,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:52:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555792328] [2024-06-20 15:52:45,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:52:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:45,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:52:45,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:52:45,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:45,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 426 transitions, 6355 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:45,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:45,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:45,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:45,886 INFO L124 PetriNetUnfolderBase]: 840/1556 cut-off events. [2024-06-20 15:52:45,886 INFO L125 PetriNetUnfolderBase]: For 337733/337736 co-relation queries the response was YES. [2024-06-20 15:52:45,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16196 conditions, 1556 events. 840/1556 cut-off events. For 337733/337736 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9145 event pairs, 46 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 16005. Up to 1347 conditions per place. [2024-06-20 15:52:45,909 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 395 selfloop transitions, 41 changer transitions 0/439 dead transitions. [2024-06-20 15:52:45,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 439 transitions, 7328 flow [2024-06-20 15:52:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:52:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:52:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:52:45,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 15:52:45,910 INFO L175 Difference]: Start difference. First operand has 407 places, 426 transitions, 6355 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:52:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 439 transitions, 7328 flow [2024-06-20 15:52:47,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 439 transitions, 7095 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-20 15:52:47,212 INFO L231 Difference]: Finished difference. Result has 405 places, 427 transitions, 6260 flow [2024-06-20 15:52:47,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6122, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6260, PETRI_PLACES=405, PETRI_TRANSITIONS=427} [2024-06-20 15:52:47,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-20 15:52:47,212 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 427 transitions, 6260 flow [2024-06-20 15:52:47,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:47,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:47,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:47,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 15:52:47,213 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)] === [2024-06-20 15:52:47,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:47,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1083958075, now seen corresponding path program 9 times [2024-06-20 15:52:47,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:47,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453007748] [2024-06-20 15:52:47,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:47,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:48,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453007748] [2024-06-20 15:52:48,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453007748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:48,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:48,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:48,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239709140] [2024-06-20 15:52:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:48,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:48,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:49,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:49,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 427 transitions, 6260 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:49,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:49,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:49,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:49,596 INFO L124 PetriNetUnfolderBase]: 847/1569 cut-off events. [2024-06-20 15:52:49,596 INFO L125 PetriNetUnfolderBase]: For 342411/342411 co-relation queries the response was YES. [2024-06-20 15:52:49,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16202 conditions, 1569 events. 847/1569 cut-off events. For 342411/342411 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9235 event pairs, 74 based on Foata normal form. 2/1569 useless extension candidates. Maximal degree in co-relation 16013. Up to 1433 conditions per place. [2024-06-20 15:52:49,619 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 420 selfloop transitions, 18 changer transitions 0/441 dead transitions. [2024-06-20 15:52:49,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 441 transitions, 7213 flow [2024-06-20 15:52:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 15:52:49,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-20 15:52:49,620 INFO L175 Difference]: Start difference. First operand has 405 places, 427 transitions, 6260 flow. Second operand 11 states and 125 transitions. [2024-06-20 15:52:49,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 441 transitions, 7213 flow [2024-06-20 15:52:51,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 441 transitions, 7085 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:51,072 INFO L231 Difference]: Finished difference. Result has 409 places, 430 transitions, 6234 flow [2024-06-20 15:52:51,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6132, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6234, PETRI_PLACES=409, PETRI_TRANSITIONS=430} [2024-06-20 15:52:51,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-20 15:52:51,077 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 430 transitions, 6234 flow [2024-06-20 15:52:51,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:51,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:51,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:51,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 15:52:51,078 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)] === [2024-06-20 15:52:51,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:51,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1551702427, now seen corresponding path program 19 times [2024-06-20 15:52:51,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:51,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973922523] [2024-06-20 15:52:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:51,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:52,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973922523] [2024-06-20 15:52:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973922523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:52,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:52,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179873585] [2024-06-20 15:52:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:52,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:52,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:52,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 430 transitions, 6234 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:52,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:52,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:52,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:52,969 INFO L124 PetriNetUnfolderBase]: 875/1622 cut-off events. [2024-06-20 15:52:52,969 INFO L125 PetriNetUnfolderBase]: For 383772/383775 co-relation queries the response was YES. [2024-06-20 15:52:52,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17558 conditions, 1622 events. 875/1622 cut-off events. For 383772/383775 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9659 event pairs, 52 based on Foata normal form. 1/1618 useless extension candidates. Maximal degree in co-relation 17367. Up to 1296 conditions per place. [2024-06-20 15:52:52,992 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 377 selfloop transitions, 74 changer transitions 0/454 dead transitions. [2024-06-20 15:52:52,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 454 transitions, 8360 flow [2024-06-20 15:52:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-20 15:52:52,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-20 15:52:52,993 INFO L175 Difference]: Start difference. First operand has 409 places, 430 transitions, 6234 flow. Second operand 11 states and 146 transitions. [2024-06-20 15:52:52,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 454 transitions, 8360 flow [2024-06-20 15:52:54,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 454 transitions, 8297 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 15:52:54,545 INFO L231 Difference]: Finished difference. Result has 413 places, 439 transitions, 6720 flow [2024-06-20 15:52:54,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6171, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6720, PETRI_PLACES=413, PETRI_TRANSITIONS=439} [2024-06-20 15:52:54,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-20 15:52:54,545 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 439 transitions, 6720 flow [2024-06-20 15:52:54,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:54,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:54,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 15:52:54,546 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)] === [2024-06-20 15:52:54,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:54,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1557958537, now seen corresponding path program 20 times [2024-06-20 15:52:54,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125868765] [2024-06-20 15:52:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:55,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125868765] [2024-06-20 15:52:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125868765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323966355] [2024-06-20 15:52:55,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:55,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:55,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:55,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:55,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 439 transitions, 6720 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:55,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:55,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:55,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:56,395 INFO L124 PetriNetUnfolderBase]: 878/1629 cut-off events. [2024-06-20 15:52:56,395 INFO L125 PetriNetUnfolderBase]: For 390781/390784 co-relation queries the response was YES. [2024-06-20 15:52:56,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17843 conditions, 1629 events. 878/1629 cut-off events. For 390781/390784 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9727 event pairs, 51 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 17650. Up to 1366 conditions per place. [2024-06-20 15:52:56,420 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 393 selfloop transitions, 59 changer transitions 0/455 dead transitions. [2024-06-20 15:52:56,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 455 transitions, 8108 flow [2024-06-20 15:52:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:52:56,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:52:56,421 INFO L175 Difference]: Start difference. First operand has 413 places, 439 transitions, 6720 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:52:56,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 455 transitions, 8108 flow [2024-06-20 15:52:57,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 455 transitions, 7893 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-20 15:52:57,940 INFO L231 Difference]: Finished difference. Result has 420 places, 444 transitions, 6841 flow [2024-06-20 15:52:57,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6521, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6841, PETRI_PLACES=420, PETRI_TRANSITIONS=444} [2024-06-20 15:52:57,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-20 15:52:57,940 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 444 transitions, 6841 flow [2024-06-20 15:52:57,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:57,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:52:57,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:52:57,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 15:52:57,941 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)] === [2024-06-20 15:52:57,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:52:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash 67770325, now seen corresponding path program 21 times [2024-06-20 15:52:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:52:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345293009] [2024-06-20 15:52:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:52:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:52:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:52:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:52:59,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:52:59,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345293009] [2024-06-20 15:52:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345293009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:52:59,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:52:59,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:52:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047739193] [2024-06-20 15:52:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:52:59,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:52:59,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:52:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:52:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:52:59,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:52:59,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 444 transitions, 6841 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:52:59,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:52:59,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:52:59,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:52:59,773 INFO L124 PetriNetUnfolderBase]: 879/1633 cut-off events. [2024-06-20 15:52:59,773 INFO L125 PetriNetUnfolderBase]: For 395664/395667 co-relation queries the response was YES. [2024-06-20 15:52:59,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17727 conditions, 1633 events. 879/1633 cut-off events. For 395664/395667 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9747 event pairs, 53 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 17531. Up to 1354 conditions per place. [2024-06-20 15:52:59,797 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 390 selfloop transitions, 64 changer transitions 0/457 dead transitions. [2024-06-20 15:52:59,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 457 transitions, 8115 flow [2024-06-20 15:52:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:52:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:52:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:52:59,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-20 15:52:59,798 INFO L175 Difference]: Start difference. First operand has 420 places, 444 transitions, 6841 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:52:59,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 457 transitions, 8115 flow [2024-06-20 15:53:01,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 457 transitions, 7896 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-20 15:53:01,272 INFO L231 Difference]: Finished difference. Result has 425 places, 446 transitions, 6838 flow [2024-06-20 15:53:01,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6838, PETRI_PLACES=425, PETRI_TRANSITIONS=446} [2024-06-20 15:53:01,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-20 15:53:01,272 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 446 transitions, 6838 flow [2024-06-20 15:53:01,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:01,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:01,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:01,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 15:53:01,273 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)] === [2024-06-20 15:53:01,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1321776667, now seen corresponding path program 22 times [2024-06-20 15:53:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:01,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131100036] [2024-06-20 15:53:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:02,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131100036] [2024-06-20 15:53:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131100036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:02,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734816187] [2024-06-20 15:53:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:02,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:02,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 446 transitions, 6838 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:02,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:02,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:03,128 INFO L124 PetriNetUnfolderBase]: 882/1638 cut-off events. [2024-06-20 15:53:03,128 INFO L125 PetriNetUnfolderBase]: For 393627/393630 co-relation queries the response was YES. [2024-06-20 15:53:03,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17828 conditions, 1638 events. 882/1638 cut-off events. For 393627/393630 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9791 event pairs, 53 based on Foata normal form. 1/1634 useless extension candidates. Maximal degree in co-relation 17630. Up to 1306 conditions per place. [2024-06-20 15:53:03,153 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 377 selfloop transitions, 84 changer transitions 0/464 dead transitions. [2024-06-20 15:53:03,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 464 transitions, 8325 flow [2024-06-20 15:53:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:53:03,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-20 15:53:03,154 INFO L175 Difference]: Start difference. First operand has 425 places, 446 transitions, 6838 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:53:03,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 464 transitions, 8325 flow [2024-06-20 15:53:04,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 464 transitions, 8124 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-20 15:53:04,757 INFO L231 Difference]: Finished difference. Result has 428 places, 453 transitions, 7121 flow [2024-06-20 15:53:04,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6637, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7121, PETRI_PLACES=428, PETRI_TRANSITIONS=453} [2024-06-20 15:53:04,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-20 15:53:04,758 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 453 transitions, 7121 flow [2024-06-20 15:53:04,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:04,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:04,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:04,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 15:53:04,759 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)] === [2024-06-20 15:53:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1321469209, now seen corresponding path program 10 times [2024-06-20 15:53:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141502393] [2024-06-20 15:53:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:06,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141502393] [2024-06-20 15:53:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141502393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844627515] [2024-06-20 15:53:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:06,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:06,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 453 transitions, 7121 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:06,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:06,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:06,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:06,812 INFO L124 PetriNetUnfolderBase]: 893/1657 cut-off events. [2024-06-20 15:53:06,813 INFO L125 PetriNetUnfolderBase]: For 425278/425281 co-relation queries the response was YES. [2024-06-20 15:53:06,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 1657 events. 893/1657 cut-off events. For 425278/425281 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9941 event pairs, 48 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 18274. Up to 1413 conditions per place. [2024-06-20 15:53:06,839 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 420 selfloop transitions, 46 changer transitions 0/469 dead transitions. [2024-06-20 15:53:06,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 469 transitions, 8461 flow [2024-06-20 15:53:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:53:06,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-20 15:53:06,840 INFO L175 Difference]: Start difference. First operand has 428 places, 453 transitions, 7121 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:53:06,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 469 transitions, 8461 flow [2024-06-20 15:53:08,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 469 transitions, 8236 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-20 15:53:08,509 INFO L231 Difference]: Finished difference. Result has 433 places, 455 transitions, 7098 flow [2024-06-20 15:53:08,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6896, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7098, PETRI_PLACES=433, PETRI_TRANSITIONS=455} [2024-06-20 15:53:08,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-20 15:53:08,510 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 455 transitions, 7098 flow [2024-06-20 15:53:08,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:08,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:08,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:08,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 15:53:08,511 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)] === [2024-06-20 15:53:08,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:08,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1330057387, now seen corresponding path program 23 times [2024-06-20 15:53:08,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:08,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932691443] [2024-06-20 15:53:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:08,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932691443] [2024-06-20 15:53:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932691443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:09,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:09,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:09,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927037862] [2024-06-20 15:53:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:09,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:09,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 455 transitions, 7098 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:09,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:09,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:09,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:10,597 INFO L124 PetriNetUnfolderBase]: 896/1664 cut-off events. [2024-06-20 15:53:10,597 INFO L125 PetriNetUnfolderBase]: For 422071/422074 co-relation queries the response was YES. [2024-06-20 15:53:10,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18540 conditions, 1664 events. 896/1664 cut-off events. For 422071/422074 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10010 event pairs, 56 based on Foata normal form. 1/1660 useless extension candidates. Maximal degree in co-relation 18339. Up to 1331 conditions per place. [2024-06-20 15:53:10,622 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 84 changer transitions 0/469 dead transitions. [2024-06-20 15:53:10,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 469 transitions, 8680 flow [2024-06-20 15:53:10,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:53:10,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-20 15:53:10,624 INFO L175 Difference]: Start difference. First operand has 433 places, 455 transitions, 7098 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:53:10,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 469 transitions, 8680 flow [2024-06-20 15:53:12,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 469 transitions, 8497 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-20 15:53:12,143 INFO L231 Difference]: Finished difference. Result has 437 places, 457 transitions, 7176 flow [2024-06-20 15:53:12,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6915, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7176, PETRI_PLACES=437, PETRI_TRANSITIONS=457} [2024-06-20 15:53:12,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-20 15:53:12,144 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 457 transitions, 7176 flow [2024-06-20 15:53:12,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:12,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:12,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:12,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 15:53:12,144 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)] === [2024-06-20 15:53:12,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:12,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1330050877, now seen corresponding path program 24 times [2024-06-20 15:53:12,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:12,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062052197] [2024-06-20 15:53:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:12,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:13,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:13,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062052197] [2024-06-20 15:53:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062052197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:13,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:13,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698395110] [2024-06-20 15:53:13,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:13,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:13,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 457 transitions, 7176 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:13,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:13,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:14,204 INFO L124 PetriNetUnfolderBase]: 899/1671 cut-off events. [2024-06-20 15:53:14,204 INFO L125 PetriNetUnfolderBase]: For 426397/426400 co-relation queries the response was YES. [2024-06-20 15:53:14,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 1671 events. 899/1671 cut-off events. For 426397/426400 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10096 event pairs, 57 based on Foata normal form. 1/1667 useless extension candidates. Maximal degree in co-relation 18405. Up to 1335 conditions per place. [2024-06-20 15:53:14,230 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 384 selfloop transitions, 85 changer transitions 0/472 dead transitions. [2024-06-20 15:53:14,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 472 transitions, 8794 flow [2024-06-20 15:53:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-20 15:53:14,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-20 15:53:14,231 INFO L175 Difference]: Start difference. First operand has 437 places, 457 transitions, 7176 flow. Second operand 11 states and 145 transitions. [2024-06-20 15:53:14,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 472 transitions, 8794 flow [2024-06-20 15:53:15,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 472 transitions, 8537 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-20 15:53:15,839 INFO L231 Difference]: Finished difference. Result has 443 places, 460 transitions, 7208 flow [2024-06-20 15:53:15,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6948, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7208, PETRI_PLACES=443, PETRI_TRANSITIONS=460} [2024-06-20 15:53:15,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-20 15:53:15,840 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 460 transitions, 7208 flow [2024-06-20 15:53:15,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:15,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:15,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:15,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 15:53:15,841 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)] === [2024-06-20 15:53:15,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash -729396505, now seen corresponding path program 11 times [2024-06-20 15:53:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186541799] [2024-06-20 15:53:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:17,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186541799] [2024-06-20 15:53:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186541799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:17,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:53:17,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621656020] [2024-06-20 15:53:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:17,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:53:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:53:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:53:17,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:17,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 460 transitions, 7208 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:17,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:17,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:17,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:17,790 INFO L124 PetriNetUnfolderBase]: 903/1679 cut-off events. [2024-06-20 15:53:17,791 INFO L125 PetriNetUnfolderBase]: For 442098/442098 co-relation queries the response was YES. [2024-06-20 15:53:17,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18655 conditions, 1679 events. 903/1679 cut-off events. For 442098/442098 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10139 event pairs, 76 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 18452. Up to 1461 conditions per place. [2024-06-20 15:53:17,817 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 444 selfloop transitions, 28 changer transitions 0/475 dead transitions. [2024-06-20 15:53:17,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 475 transitions, 8508 flow [2024-06-20 15:53:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 15:53:17,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-20 15:53:17,818 INFO L175 Difference]: Start difference. First operand has 443 places, 460 transitions, 7208 flow. Second operand 11 states and 130 transitions. [2024-06-20 15:53:17,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 475 transitions, 8508 flow [2024-06-20 15:53:19,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 475 transitions, 8293 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-20 15:53:19,369 INFO L231 Difference]: Finished difference. Result has 447 places, 461 transitions, 7109 flow [2024-06-20 15:53:19,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7109, PETRI_PLACES=447, PETRI_TRANSITIONS=461} [2024-06-20 15:53:19,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-20 15:53:19,369 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 461 transitions, 7109 flow [2024-06-20 15:53:19,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:19,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:19,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:19,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 15:53:19,371 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)] === [2024-06-20 15:53:19,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1083967003, now seen corresponding path program 25 times [2024-06-20 15:53:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:19,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148437836] [2024-06-20 15:53:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:20,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148437836] [2024-06-20 15:53:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148437836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:20,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:20,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:20,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482881862] [2024-06-20 15:53:20,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:20,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:20,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:20,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 461 transitions, 7109 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:20,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:20,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:20,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:21,299 INFO L124 PetriNetUnfolderBase]: 904/1681 cut-off events. [2024-06-20 15:53:21,299 INFO L125 PetriNetUnfolderBase]: For 437226/437226 co-relation queries the response was YES. [2024-06-20 15:53:21,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18442 conditions, 1681 events. 904/1681 cut-off events. For 437226/437226 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10157 event pairs, 80 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 18238. Up to 1500 conditions per place. [2024-06-20 15:53:21,327 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 441 selfloop transitions, 32 changer transitions 0/476 dead transitions. [2024-06-20 15:53:21,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 476 transitions, 8468 flow [2024-06-20 15:53:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:53:21,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 15:53:21,328 INFO L175 Difference]: Start difference. First operand has 447 places, 461 transitions, 7109 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:53:21,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 476 transitions, 8468 flow [2024-06-20 15:53:22,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 476 transitions, 8362 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-20 15:53:22,764 INFO L231 Difference]: Finished difference. Result has 449 places, 464 transitions, 7186 flow [2024-06-20 15:53:22,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7003, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7186, PETRI_PLACES=449, PETRI_TRANSITIONS=464} [2024-06-20 15:53:22,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-20 15:53:22,765 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 464 transitions, 7186 flow [2024-06-20 15:53:22,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:22,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:22,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:22,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 15:53:22,765 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)] === [2024-06-20 15:53:22,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1083669775, now seen corresponding path program 12 times [2024-06-20 15:53:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:22,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468327253] [2024-06-20 15:53:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:24,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:24,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468327253] [2024-06-20 15:53:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468327253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:24,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595543833] [2024-06-20 15:53:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:24,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:24,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 464 transitions, 7186 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:24,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:24,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:24,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:24,895 INFO L124 PetriNetUnfolderBase]: 901/1676 cut-off events. [2024-06-20 15:53:24,895 INFO L125 PetriNetUnfolderBase]: For 422871/422871 co-relation queries the response was YES. [2024-06-20 15:53:24,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18079 conditions, 1676 events. 901/1676 cut-off events. For 422871/422871 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10133 event pairs, 79 based on Foata normal form. 2/1676 useless extension candidates. Maximal degree in co-relation 17874. Up to 1499 conditions per place. [2024-06-20 15:53:24,920 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 444 selfloop transitions, 27 changer transitions 0/474 dead transitions. [2024-06-20 15:53:24,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 474 transitions, 8150 flow [2024-06-20 15:53:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:53:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:53:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-20 15:53:24,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-20 15:53:24,922 INFO L175 Difference]: Start difference. First operand has 449 places, 464 transitions, 7186 flow. Second operand 10 states and 118 transitions. [2024-06-20 15:53:24,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 474 transitions, 8150 flow [2024-06-20 15:53:26,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 474 transitions, 7951 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-20 15:53:26,228 INFO L231 Difference]: Finished difference. Result has 450 places, 464 transitions, 7049 flow [2024-06-20 15:53:26,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6987, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7049, PETRI_PLACES=450, PETRI_TRANSITIONS=464} [2024-06-20 15:53:26,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-20 15:53:26,228 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 464 transitions, 7049 flow [2024-06-20 15:53:26,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:26,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:26,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:26,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 15:53:26,229 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)] === [2024-06-20 15:53:26,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2076555983, now seen corresponding path program 13 times [2024-06-20 15:53:26,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:26,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085203720] [2024-06-20 15:53:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:26,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:27,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085203720] [2024-06-20 15:53:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085203720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:27,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:27,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:53:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822540871] [2024-06-20 15:53:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:27,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:53:27,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:27,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:53:27,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:53:27,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:27,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 464 transitions, 7049 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:27,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:27,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:27,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:27,918 INFO L124 PetriNetUnfolderBase]: 905/1681 cut-off events. [2024-06-20 15:53:27,918 INFO L125 PetriNetUnfolderBase]: For 427704/427704 co-relation queries the response was YES. [2024-06-20 15:53:27,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 1681 events. 905/1681 cut-off events. For 427704/427704 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10146 event pairs, 52 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 17843. Up to 1346 conditions per place. [2024-06-20 15:53:27,945 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 394 selfloop transitions, 79 changer transitions 0/476 dead transitions. [2024-06-20 15:53:27,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 476 transitions, 8083 flow [2024-06-20 15:53:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:53:27,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:53:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:53:27,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-20 15:53:27,946 INFO L175 Difference]: Start difference. First operand has 450 places, 464 transitions, 7049 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:53:27,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 476 transitions, 8083 flow [2024-06-20 15:53:29,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 476 transitions, 8024 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 15:53:29,333 INFO L231 Difference]: Finished difference. Result has 451 places, 465 transitions, 7211 flow [2024-06-20 15:53:29,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6990, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7211, PETRI_PLACES=451, PETRI_TRANSITIONS=465} [2024-06-20 15:53:29,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 420 predicate places. [2024-06-20 15:53:29,333 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 465 transitions, 7211 flow [2024-06-20 15:53:29,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:29,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:29,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:29,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 15:53:29,334 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)] === [2024-06-20 15:53:29,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:29,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2113434265, now seen corresponding path program 14 times [2024-06-20 15:53:29,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:29,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279975553] [2024-06-20 15:53:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:29,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:30,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279975553] [2024-06-20 15:53:30,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279975553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:30,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:30,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:30,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891002371] [2024-06-20 15:53:30,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:30,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:30,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:30,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:30,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:30,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 465 transitions, 7211 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:30,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:30,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:30,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:31,411 INFO L124 PetriNetUnfolderBase]: 909/1692 cut-off events. [2024-06-20 15:53:31,411 INFO L125 PetriNetUnfolderBase]: For 431456/431459 co-relation queries the response was YES. [2024-06-20 15:53:31,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18299 conditions, 1692 events. 909/1692 cut-off events. For 431456/431459 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10269 event pairs, 49 based on Foata normal form. 2/1689 useless extension candidates. Maximal degree in co-relation 18092. Up to 1382 conditions per place. [2024-06-20 15:53:31,437 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 407 selfloop transitions, 70 changer transitions 0/480 dead transitions. [2024-06-20 15:53:31,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 480 transitions, 8539 flow [2024-06-20 15:53:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:53:31,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-20 15:53:31,438 INFO L175 Difference]: Start difference. First operand has 451 places, 465 transitions, 7211 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:53:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 480 transitions, 8539 flow [2024-06-20 15:53:32,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 480 transitions, 8330 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-20 15:53:32,950 INFO L231 Difference]: Finished difference. Result has 454 places, 466 transitions, 7204 flow [2024-06-20 15:53:32,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7002, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7204, PETRI_PLACES=454, PETRI_TRANSITIONS=466} [2024-06-20 15:53:32,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2024-06-20 15:53:32,950 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 466 transitions, 7204 flow [2024-06-20 15:53:32,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:32,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:32,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:32,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 15:53:32,951 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)] === [2024-06-20 15:53:32,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1551695917, now seen corresponding path program 26 times [2024-06-20 15:53:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848617474] [2024-06-20 15:53:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:34,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:34,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848617474] [2024-06-20 15:53:34,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848617474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:34,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:34,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134910211] [2024-06-20 15:53:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:34,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:34,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 466 transitions, 7204 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:34,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:34,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:34,750 INFO L124 PetriNetUnfolderBase]: 920/1716 cut-off events. [2024-06-20 15:53:34,750 INFO L125 PetriNetUnfolderBase]: For 446125/446128 co-relation queries the response was YES. [2024-06-20 15:53:34,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18668 conditions, 1716 events. 920/1716 cut-off events. For 446125/446128 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10473 event pairs, 59 based on Foata normal form. 2/1713 useless extension candidates. Maximal degree in co-relation 18460. Up to 1370 conditions per place. [2024-06-20 15:53:34,776 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 401 selfloop transitions, 81 changer transitions 0/485 dead transitions. [2024-06-20 15:53:34,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 485 transitions, 9264 flow [2024-06-20 15:53:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-20 15:53:34,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-20 15:53:34,778 INFO L175 Difference]: Start difference. First operand has 454 places, 466 transitions, 7204 flow. Second operand 11 states and 147 transitions. [2024-06-20 15:53:34,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 485 transitions, 9264 flow [2024-06-20 15:53:36,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 485 transitions, 8991 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-06-20 15:53:36,438 INFO L231 Difference]: Finished difference. Result has 453 places, 472 transitions, 7331 flow [2024-06-20 15:53:36,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6931, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7331, PETRI_PLACES=453, PETRI_TRANSITIONS=472} [2024-06-20 15:53:36,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-20 15:53:36,438 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 472 transitions, 7331 flow [2024-06-20 15:53:36,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:36,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:36,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:36,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 15:53:36,439 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)] === [2024-06-20 15:53:36,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1551456349, now seen corresponding path program 15 times [2024-06-20 15:53:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933094636] [2024-06-20 15:53:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933094636] [2024-06-20 15:53:38,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933094636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:38,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:38,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:38,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524866448] [2024-06-20 15:53:38,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:38,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:38,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:38,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 472 transitions, 7331 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:38,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:38,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:38,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:38,846 INFO L124 PetriNetUnfolderBase]: 924/1720 cut-off events. [2024-06-20 15:53:38,847 INFO L125 PetriNetUnfolderBase]: For 449412/449415 co-relation queries the response was YES. [2024-06-20 15:53:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18481 conditions, 1720 events. 924/1720 cut-off events. For 449412/449415 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10501 event pairs, 52 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 18276. Up to 1521 conditions per place. [2024-06-20 15:53:38,870 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 451 selfloop transitions, 31 changer transitions 0/485 dead transitions. [2024-06-20 15:53:38,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 485 transitions, 8366 flow [2024-06-20 15:53:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 15:53:38,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-20 15:53:38,871 INFO L175 Difference]: Start difference. First operand has 453 places, 472 transitions, 7331 flow. Second operand 11 states and 129 transitions. [2024-06-20 15:53:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 485 transitions, 8366 flow [2024-06-20 15:53:40,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 485 transitions, 8039 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-20 15:53:40,442 INFO L231 Difference]: Finished difference. Result has 454 places, 473 transitions, 7109 flow [2024-06-20 15:53:40,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7004, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7109, PETRI_PLACES=454, PETRI_TRANSITIONS=473} [2024-06-20 15:53:40,443 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2024-06-20 15:53:40,443 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 473 transitions, 7109 flow [2024-06-20 15:53:40,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:40,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:40,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:40,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 15:53:40,443 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)] === [2024-06-20 15:53:40,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:40,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1551465277, now seen corresponding path program 27 times [2024-06-20 15:53:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:40,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608861514] [2024-06-20 15:53:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:40,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608861514] [2024-06-20 15:53:41,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608861514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:41,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:41,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:41,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892885616] [2024-06-20 15:53:41,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:41,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:41,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:41,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:41,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 473 transitions, 7109 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:41,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:41,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:41,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:42,329 INFO L124 PetriNetUnfolderBase]: 922/1717 cut-off events. [2024-06-20 15:53:42,329 INFO L125 PetriNetUnfolderBase]: For 434675/434678 co-relation queries the response was YES. [2024-06-20 15:53:42,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17957 conditions, 1717 events. 922/1717 cut-off events. For 434675/434678 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10475 event pairs, 59 based on Foata normal form. 1/1713 useless extension candidates. Maximal degree in co-relation 17754. Up to 1422 conditions per place. [2024-06-20 15:53:42,355 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 408 selfloop transitions, 72 changer transitions 0/483 dead transitions. [2024-06-20 15:53:42,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 483 transitions, 8091 flow [2024-06-20 15:53:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:53:42,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-20 15:53:42,356 INFO L175 Difference]: Start difference. First operand has 454 places, 473 transitions, 7109 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:53:42,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 483 transitions, 8091 flow [2024-06-20 15:53:44,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 483 transitions, 7947 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-20 15:53:44,321 INFO L231 Difference]: Finished difference. Result has 456 places, 473 transitions, 7114 flow [2024-06-20 15:53:44,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6965, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7114, PETRI_PLACES=456, PETRI_TRANSITIONS=473} [2024-06-20 15:53:44,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 425 predicate places. [2024-06-20 15:53:44,322 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 473 transitions, 7114 flow [2024-06-20 15:53:44,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:44,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:44,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:44,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 15:53:44,323 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)] === [2024-06-20 15:53:44,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:44,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1329811309, now seen corresponding path program 16 times [2024-06-20 15:53:44,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:44,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453830649] [2024-06-20 15:53:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:44,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453830649] [2024-06-20 15:53:45,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453830649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:45,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:45,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:53:45,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991067360] [2024-06-20 15:53:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:45,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:53:45,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:45,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:53:45,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:53:45,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:45,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 473 transitions, 7114 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:45,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:45,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:45,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:45,967 INFO L124 PetriNetUnfolderBase]: 919/1712 cut-off events. [2024-06-20 15:53:45,967 INFO L125 PetriNetUnfolderBase]: For 430234/430237 co-relation queries the response was YES. [2024-06-20 15:53:45,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17631 conditions, 1712 events. 919/1712 cut-off events. For 430234/430237 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10436 event pairs, 50 based on Foata normal form. 2/1709 useless extension candidates. Maximal degree in co-relation 17427. Up to 1487 conditions per place. [2024-06-20 15:53:45,992 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 441 selfloop transitions, 40 changer transitions 0/484 dead transitions. [2024-06-20 15:53:45,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 484 transitions, 8108 flow [2024-06-20 15:53:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:53:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:53:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:53:45,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-20 15:53:45,993 INFO L175 Difference]: Start difference. First operand has 456 places, 473 transitions, 7114 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:53:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 484 transitions, 8108 flow [2024-06-20 15:53:47,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 484 transitions, 7916 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-20 15:53:47,718 INFO L231 Difference]: Finished difference. Result has 457 places, 473 transitions, 7006 flow [2024-06-20 15:53:47,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6922, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7006, PETRI_PLACES=457, PETRI_TRANSITIONS=473} [2024-06-20 15:53:47,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 426 predicate places. [2024-06-20 15:53:47,718 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 473 transitions, 7006 flow [2024-06-20 15:53:47,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:47,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:47,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:47,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 15:53:47,719 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)] === [2024-06-20 15:53:47,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1329820237, now seen corresponding path program 28 times [2024-06-20 15:53:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274742369] [2024-06-20 15:53:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:49,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:49,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274742369] [2024-06-20 15:53:49,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274742369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:49,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:49,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:49,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330976349] [2024-06-20 15:53:49,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:49,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:49,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:49,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:49,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 473 transitions, 7006 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:49,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:49,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:49,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:49,786 INFO L124 PetriNetUnfolderBase]: 917/1707 cut-off events. [2024-06-20 15:53:49,786 INFO L125 PetriNetUnfolderBase]: For 414426/414429 co-relation queries the response was YES. [2024-06-20 15:53:49,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17359 conditions, 1707 events. 917/1707 cut-off events. For 414426/414429 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10388 event pairs, 58 based on Foata normal form. 1/1703 useless extension candidates. Maximal degree in co-relation 17154. Up to 1372 conditions per place. [2024-06-20 15:53:49,807 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 394 selfloop transitions, 86 changer transitions 0/483 dead transitions. [2024-06-20 15:53:49,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 483 transitions, 7988 flow [2024-06-20 15:53:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:53:49,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-20 15:53:49,808 INFO L175 Difference]: Start difference. First operand has 457 places, 473 transitions, 7006 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:53:49,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 483 transitions, 7988 flow [2024-06-20 15:53:51,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 483 transitions, 7836 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-20 15:53:51,387 INFO L231 Difference]: Finished difference. Result has 459 places, 473 transitions, 7031 flow [2024-06-20 15:53:51,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6854, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7031, PETRI_PLACES=459, PETRI_TRANSITIONS=473} [2024-06-20 15:53:51,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-20 15:53:51,387 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 473 transitions, 7031 flow [2024-06-20 15:53:51,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:51,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:51,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:51,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 15:53:51,388 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)] === [2024-06-20 15:53:51,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2067984545, now seen corresponding path program 29 times [2024-06-20 15:53:51,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:51,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813546478] [2024-06-20 15:53:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:51,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:52,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:52,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813546478] [2024-06-20 15:53:52,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813546478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:52,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:52,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784923776] [2024-06-20 15:53:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:52,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:52,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:52,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 473 transitions, 7031 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:52,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:52,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:52,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:53,162 INFO L124 PetriNetUnfolderBase]: 925/1722 cut-off events. [2024-06-20 15:53:53,163 INFO L125 PetriNetUnfolderBase]: For 431666/431669 co-relation queries the response was YES. [2024-06-20 15:53:53,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17793 conditions, 1722 events. 925/1722 cut-off events. For 431666/431669 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10522 event pairs, 57 based on Foata normal form. 1/1718 useless extension candidates. Maximal degree in co-relation 17587. Up to 1103 conditions per place. [2024-06-20 15:53:53,189 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 305 selfloop transitions, 186 changer transitions 0/494 dead transitions. [2024-06-20 15:53:53,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 494 transitions, 9185 flow [2024-06-20 15:53:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-20 15:53:53,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-20 15:53:53,190 INFO L175 Difference]: Start difference. First operand has 459 places, 473 transitions, 7031 flow. Second operand 11 states and 145 transitions. [2024-06-20 15:53:53,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 494 transitions, 9185 flow [2024-06-20 15:53:54,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 494 transitions, 8970 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-20 15:53:54,767 INFO L231 Difference]: Finished difference. Result has 461 places, 481 transitions, 7489 flow [2024-06-20 15:53:54,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6816, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7489, PETRI_PLACES=461, PETRI_TRANSITIONS=481} [2024-06-20 15:53:54,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-20 15:53:54,767 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 481 transitions, 7489 flow [2024-06-20 15:53:54,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:54,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:54,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:54,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 15:53:54,768 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)] === [2024-06-20 15:53:54,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:54,768 INFO L85 PathProgramCache]: Analyzing trace with hash -305128117, now seen corresponding path program 3 times [2024-06-20 15:53:54,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:54,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160960258] [2024-06-20 15:53:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:53:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:53:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:53:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160960258] [2024-06-20 15:53:56,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160960258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:53:56,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:53:56,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:53:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830918951] [2024-06-20 15:53:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:53:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:53:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:53:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:53:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:53:56,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:53:56,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 481 transitions, 7489 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:56,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:53:56,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:53:56,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:53:57,077 INFO L124 PetriNetUnfolderBase]: 923/1725 cut-off events. [2024-06-20 15:53:57,077 INFO L125 PetriNetUnfolderBase]: For 427657/427660 co-relation queries the response was YES. [2024-06-20 15:53:57,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17901 conditions, 1725 events. 923/1725 cut-off events. For 427657/427660 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10571 event pairs, 64 based on Foata normal form. 1/1721 useless extension candidates. Maximal degree in co-relation 17693. Up to 1203 conditions per place. [2024-06-20 15:53:57,105 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 346 selfloop transitions, 145 changer transitions 0/494 dead transitions. [2024-06-20 15:53:57,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 494 transitions, 8547 flow [2024-06-20 15:53:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:53:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:53:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 15:53:57,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-20 15:53:57,106 INFO L175 Difference]: Start difference. First operand has 461 places, 481 transitions, 7489 flow. Second operand 11 states and 141 transitions. [2024-06-20 15:53:57,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 494 transitions, 8547 flow [2024-06-20 15:53:58,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 494 transitions, 8179 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-20 15:53:58,645 INFO L231 Difference]: Finished difference. Result has 467 places, 483 transitions, 7565 flow [2024-06-20 15:53:58,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7123, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7565, PETRI_PLACES=467, PETRI_TRANSITIONS=483} [2024-06-20 15:53:58,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2024-06-20 15:53:58,646 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 483 transitions, 7565 flow [2024-06-20 15:53:58,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:53:58,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:53:58,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:53:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 15:53:58,647 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)] === [2024-06-20 15:53:58,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:53:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash 333529675, now seen corresponding path program 4 times [2024-06-20 15:53:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:53:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860763897] [2024-06-20 15:53:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:53:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:53:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:00,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860763897] [2024-06-20 15:54:00,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860763897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:00,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:00,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:00,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986334378] [2024-06-20 15:54:00,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:00,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:00,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:00,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:00,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:00,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:00,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 483 transitions, 7565 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:00,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:00,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:00,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:00,961 INFO L124 PetriNetUnfolderBase]: 926/1730 cut-off events. [2024-06-20 15:54:00,961 INFO L125 PetriNetUnfolderBase]: For 432262/432265 co-relation queries the response was YES. [2024-06-20 15:54:00,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18247 conditions, 1730 events. 926/1730 cut-off events. For 432262/432265 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10620 event pairs, 64 based on Foata normal form. 1/1726 useless extension candidates. Maximal degree in co-relation 18036. Up to 1404 conditions per place. [2024-06-20 15:54:00,988 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 416 selfloop transitions, 78 changer transitions 0/497 dead transitions. [2024-06-20 15:54:00,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 497 transitions, 8945 flow [2024-06-20 15:54:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:54:00,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-20 15:54:00,989 INFO L175 Difference]: Start difference. First operand has 467 places, 483 transitions, 7565 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:54:00,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 497 transitions, 8945 flow [2024-06-20 15:54:02,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 497 transitions, 8714 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-20 15:54:02,622 INFO L231 Difference]: Finished difference. Result has 468 places, 485 transitions, 7563 flow [2024-06-20 15:54:02,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7334, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7563, PETRI_PLACES=468, PETRI_TRANSITIONS=485} [2024-06-20 15:54:02,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-20 15:54:02,623 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 485 transitions, 7563 flow [2024-06-20 15:54:02,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:02,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:02,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:02,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 15:54:02,623 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)] === [2024-06-20 15:54:02,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2067978035, now seen corresponding path program 30 times [2024-06-20 15:54:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822396604] [2024-06-20 15:54:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:03,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822396604] [2024-06-20 15:54:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822396604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:03,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:03,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193640480] [2024-06-20 15:54:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:04,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:04,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 485 transitions, 7563 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:04,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:04,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:04,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:04,653 INFO L124 PetriNetUnfolderBase]: 924/1727 cut-off events. [2024-06-20 15:54:04,653 INFO L125 PetriNetUnfolderBase]: For 426463/426466 co-relation queries the response was YES. [2024-06-20 15:54:04,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17962 conditions, 1727 events. 924/1727 cut-off events. For 426463/426466 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10585 event pairs, 56 based on Foata normal form. 1/1723 useless extension candidates. Maximal degree in co-relation 17751. Up to 1103 conditions per place. [2024-06-20 15:54:04,682 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 305 selfloop transitions, 189 changer transitions 0/497 dead transitions. [2024-06-20 15:54:04,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 497 transitions, 9169 flow [2024-06-20 15:54:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 15:54:04,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:54:04,684 INFO L175 Difference]: Start difference. First operand has 468 places, 485 transitions, 7563 flow. Second operand 11 states and 143 transitions. [2024-06-20 15:54:04,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 497 transitions, 9169 flow [2024-06-20 15:54:06,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 497 transitions, 8869 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-20 15:54:06,310 INFO L231 Difference]: Finished difference. Result has 469 places, 485 transitions, 7646 flow [2024-06-20 15:54:06,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7263, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7646, PETRI_PLACES=469, PETRI_TRANSITIONS=485} [2024-06-20 15:54:06,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 438 predicate places. [2024-06-20 15:54:06,311 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 485 transitions, 7646 flow [2024-06-20 15:54:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:06,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:06,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 15:54:06,311 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)] === [2024-06-20 15:54:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1551465029, now seen corresponding path program 5 times [2024-06-20 15:54:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955014169] [2024-06-20 15:54:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:06,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:07,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:07,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955014169] [2024-06-20 15:54:07,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955014169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:07,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:07,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:54:07,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526630129] [2024-06-20 15:54:07,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:07,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:54:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:54:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:54:07,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:07,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 485 transitions, 7646 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:07,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:07,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:07,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:08,025 INFO L124 PetriNetUnfolderBase]: 922/1722 cut-off events. [2024-06-20 15:54:08,026 INFO L125 PetriNetUnfolderBase]: For 424388/424391 co-relation queries the response was YES. [2024-06-20 15:54:08,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17907 conditions, 1722 events. 922/1722 cut-off events. For 424388/424391 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10536 event pairs, 56 based on Foata normal form. 1/1718 useless extension candidates. Maximal degree in co-relation 17696. Up to 1426 conditions per place. [2024-06-20 15:54:08,058 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 422 selfloop transitions, 69 changer transitions 0/494 dead transitions. [2024-06-20 15:54:08,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 494 transitions, 8648 flow [2024-06-20 15:54:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:54:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:54:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 15:54:08,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:54:08,076 INFO L175 Difference]: Start difference. First operand has 469 places, 485 transitions, 7646 flow. Second operand 10 states and 130 transitions. [2024-06-20 15:54:08,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 494 transitions, 8648 flow [2024-06-20 15:54:09,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 494 transitions, 8095 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-20 15:54:09,649 INFO L231 Difference]: Finished difference. Result has 468 places, 485 transitions, 7240 flow [2024-06-20 15:54:09,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7240, PETRI_PLACES=468, PETRI_TRANSITIONS=485} [2024-06-20 15:54:09,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-20 15:54:09,650 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 485 transitions, 7240 flow [2024-06-20 15:54:09,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:09,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:09,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:09,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 15:54:09,650 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)] === [2024-06-20 15:54:09,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2068215185, now seen corresponding path program 31 times [2024-06-20 15:54:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:09,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228185058] [2024-06-20 15:54:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:09,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:10,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228185058] [2024-06-20 15:54:10,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228185058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:10,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:10,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:10,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756982445] [2024-06-20 15:54:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:10,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:10,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:10,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:10,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 485 transitions, 7240 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:10,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:10,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:10,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:11,567 INFO L124 PetriNetUnfolderBase]: 928/1734 cut-off events. [2024-06-20 15:54:11,568 INFO L125 PetriNetUnfolderBase]: For 439080/439083 co-relation queries the response was YES. [2024-06-20 15:54:11,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17505 conditions, 1734 events. 928/1734 cut-off events. For 439080/439083 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10632 event pairs, 56 based on Foata normal form. 2/1731 useless extension candidates. Maximal degree in co-relation 17295. Up to 781 conditions per place. [2024-06-20 15:54:11,594 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 282 selfloop transitions, 219 changer transitions 0/504 dead transitions. [2024-06-20 15:54:11,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 504 transitions, 9619 flow [2024-06-20 15:54:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-20 15:54:11,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-20 15:54:11,595 INFO L175 Difference]: Start difference. First operand has 468 places, 485 transitions, 7240 flow. Second operand 11 states and 154 transitions. [2024-06-20 15:54:11,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 504 transitions, 9619 flow [2024-06-20 15:54:13,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 504 transitions, 9394 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-20 15:54:13,304 INFO L231 Difference]: Finished difference. Result has 468 places, 489 transitions, 7617 flow [2024-06-20 15:54:13,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7031, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7617, PETRI_PLACES=468, PETRI_TRANSITIONS=489} [2024-06-20 15:54:13,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-20 15:54:13,304 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 489 transitions, 7617 flow [2024-06-20 15:54:13,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:13,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:13,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:13,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 15:54:13,305 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)] === [2024-06-20 15:54:13,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2068224113, now seen corresponding path program 17 times [2024-06-20 15:54:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081519898] [2024-06-20 15:54:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:14,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081519898] [2024-06-20 15:54:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081519898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:14,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:14,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:14,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789026251] [2024-06-20 15:54:14,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:14,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:14,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:14,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:14,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 489 transitions, 7617 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:14,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:14,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:14,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:15,415 INFO L124 PetriNetUnfolderBase]: 925/1729 cut-off events. [2024-06-20 15:54:15,415 INFO L125 PetriNetUnfolderBase]: For 414598/414601 co-relation queries the response was YES. [2024-06-20 15:54:15,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17405 conditions, 1729 events. 925/1729 cut-off events. For 414598/414601 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10594 event pairs, 47 based on Foata normal form. 2/1726 useless extension candidates. Maximal degree in co-relation 17196. Up to 1445 conditions per place. [2024-06-20 15:54:15,442 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 434 selfloop transitions, 64 changer transitions 0/501 dead transitions. [2024-06-20 15:54:15,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 501 transitions, 8647 flow [2024-06-20 15:54:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:54:15,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-20 15:54:15,443 INFO L175 Difference]: Start difference. First operand has 468 places, 489 transitions, 7617 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:54:15,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 501 transitions, 8647 flow [2024-06-20 15:54:17,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 501 transitions, 8113 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-20 15:54:17,044 INFO L231 Difference]: Finished difference. Result has 471 places, 489 transitions, 7215 flow [2024-06-20 15:54:17,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7083, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7215, PETRI_PLACES=471, PETRI_TRANSITIONS=489} [2024-06-20 15:54:17,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 440 predicate places. [2024-06-20 15:54:17,045 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 489 transitions, 7215 flow [2024-06-20 15:54:17,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:17,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:17,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:17,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 15:54:17,045 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)] === [2024-06-20 15:54:17,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1608396285, now seen corresponding path program 32 times [2024-06-20 15:54:17,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:17,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928605624] [2024-06-20 15:54:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:17,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928605624] [2024-06-20 15:54:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928605624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:18,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60915309] [2024-06-20 15:54:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:18,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:18,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 489 transitions, 7215 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:18,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:18,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:19,112 INFO L124 PetriNetUnfolderBase]: 923/1724 cut-off events. [2024-06-20 15:54:19,113 INFO L125 PetriNetUnfolderBase]: For 393477/393477 co-relation queries the response was YES. [2024-06-20 15:54:19,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16771 conditions, 1724 events. 923/1724 cut-off events. For 393477/393477 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10574 event pairs, 43 based on Foata normal form. 1/1723 useless extension candidates. Maximal degree in co-relation 16561. Up to 1467 conditions per place. [2024-06-20 15:54:19,139 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 455 selfloop transitions, 56 changer transitions 0/514 dead transitions. [2024-06-20 15:54:19,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 514 transitions, 8391 flow [2024-06-20 15:54:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:54:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:54:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 15:54:19,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 15:54:19,140 INFO L175 Difference]: Start difference. First operand has 471 places, 489 transitions, 7215 flow. Second operand 12 states and 152 transitions. [2024-06-20 15:54:19,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 514 transitions, 8391 flow [2024-06-20 15:54:20,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 514 transitions, 8110 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-20 15:54:20,591 INFO L231 Difference]: Finished difference. Result has 472 places, 489 transitions, 7063 flow [2024-06-20 15:54:20,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6946, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7063, PETRI_PLACES=472, PETRI_TRANSITIONS=489} [2024-06-20 15:54:20,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 441 predicate places. [2024-06-20 15:54:20,592 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 489 transitions, 7063 flow [2024-06-20 15:54:20,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:20,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:20,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 15:54:20,592 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)] === [2024-06-20 15:54:20,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash -584823071, now seen corresponding path program 1 times [2024-06-20 15:54:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812819991] [2024-06-20 15:54:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812819991] [2024-06-20 15:54:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812819991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11864042] [2024-06-20 15:54:21,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:21,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:21,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 489 transitions, 7063 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:21,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:21,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:21,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:22,278 INFO L124 PetriNetUnfolderBase]: 927/1733 cut-off events. [2024-06-20 15:54:22,279 INFO L125 PetriNetUnfolderBase]: For 404867/404867 co-relation queries the response was YES. [2024-06-20 15:54:22,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16729 conditions, 1733 events. 927/1733 cut-off events. For 404867/404867 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10652 event pairs, 24 based on Foata normal form. 2/1733 useless extension candidates. Maximal degree in co-relation 16518. Up to 1495 conditions per place. [2024-06-20 15:54:22,305 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 481 selfloop transitions, 30 changer transitions 0/514 dead transitions. [2024-06-20 15:54:22,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 514 transitions, 8211 flow [2024-06-20 15:54:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:54:22,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:54:22,307 INFO L175 Difference]: Start difference. First operand has 472 places, 489 transitions, 7063 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:54:22,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 514 transitions, 8211 flow [2024-06-20 15:54:23,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 514 transitions, 8026 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-20 15:54:23,825 INFO L231 Difference]: Finished difference. Result has 473 places, 490 transitions, 6990 flow [2024-06-20 15:54:23,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6880, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6990, PETRI_PLACES=473, PETRI_TRANSITIONS=490} [2024-06-20 15:54:23,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 442 predicate places. [2024-06-20 15:54:23,825 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 490 transitions, 6990 flow [2024-06-20 15:54:23,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:23,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:23,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:23,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 15:54:23,826 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)] === [2024-06-20 15:54:23,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:23,826 INFO L85 PathProgramCache]: Analyzing trace with hash -496109441, now seen corresponding path program 2 times [2024-06-20 15:54:23,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624632840] [2024-06-20 15:54:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:23,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:24,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:24,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624632840] [2024-06-20 15:54:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624632840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145569951] [2024-06-20 15:54:24,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:24,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:24,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:24,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:24,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:25,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:25,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 490 transitions, 6990 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:25,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:25,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:25,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:25,679 INFO L124 PetriNetUnfolderBase]: 931/1741 cut-off events. [2024-06-20 15:54:25,679 INFO L125 PetriNetUnfolderBase]: For 410367/410367 co-relation queries the response was YES. [2024-06-20 15:54:25,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16712 conditions, 1741 events. 931/1741 cut-off events. For 410367/410367 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10722 event pairs, 42 based on Foata normal form. 2/1741 useless extension candidates. Maximal degree in co-relation 16505. Up to 1521 conditions per place. [2024-06-20 15:54:25,706 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 474 selfloop transitions, 36 changer transitions 0/513 dead transitions. [2024-06-20 15:54:25,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 513 transitions, 8132 flow [2024-06-20 15:54:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:54:25,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:54:25,707 INFO L175 Difference]: Start difference. First operand has 473 places, 490 transitions, 6990 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:54:25,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 513 transitions, 8132 flow [2024-06-20 15:54:27,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 513 transitions, 8032 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-20 15:54:27,143 INFO L231 Difference]: Finished difference. Result has 475 places, 491 transitions, 7015 flow [2024-06-20 15:54:27,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6890, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7015, PETRI_PLACES=475, PETRI_TRANSITIONS=491} [2024-06-20 15:54:27,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-20 15:54:27,144 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 491 transitions, 7015 flow [2024-06-20 15:54:27,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:27,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:27,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:27,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 15:54:27,144 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)] === [2024-06-20 15:54:27,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -496257311, now seen corresponding path program 3 times [2024-06-20 15:54:27,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:27,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023221558] [2024-06-20 15:54:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:27,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:28,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023221558] [2024-06-20 15:54:28,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023221558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:28,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:28,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287588107] [2024-06-20 15:54:28,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:28,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:28,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:28,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:28,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 491 transitions, 7015 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:28,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:28,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:28,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:28,984 INFO L124 PetriNetUnfolderBase]: 935/1749 cut-off events. [2024-06-20 15:54:28,984 INFO L125 PetriNetUnfolderBase]: For 421243/421243 co-relation queries the response was YES. [2024-06-20 15:54:29,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16792 conditions, 1749 events. 935/1749 cut-off events. For 421243/421243 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10818 event pairs, 40 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 16584. Up to 1527 conditions per place. [2024-06-20 15:54:29,006 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 479 selfloop transitions, 33 changer transitions 0/515 dead transitions. [2024-06-20 15:54:29,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 515 transitions, 8165 flow [2024-06-20 15:54:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:54:29,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:54:29,007 INFO L175 Difference]: Start difference. First operand has 475 places, 491 transitions, 7015 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:54:29,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 515 transitions, 8165 flow [2024-06-20 15:54:30,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 515 transitions, 8052 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-20 15:54:30,419 INFO L231 Difference]: Finished difference. Result has 477 places, 492 transitions, 7022 flow [2024-06-20 15:54:30,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6902, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7022, PETRI_PLACES=477, PETRI_TRANSITIONS=492} [2024-06-20 15:54:30,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 446 predicate places. [2024-06-20 15:54:30,420 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 492 transitions, 7022 flow [2024-06-20 15:54:30,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:30,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:30,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:30,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 15:54:30,420 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)] === [2024-06-20 15:54:30,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1217050467, now seen corresponding path program 4 times [2024-06-20 15:54:30,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:30,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513855036] [2024-06-20 15:54:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:30,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:31,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:31,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513855036] [2024-06-20 15:54:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513855036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969304750] [2024-06-20 15:54:31,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:31,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:31,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:31,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:31,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:31,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 492 transitions, 7022 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:31,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:31,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:31,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:32,412 INFO L124 PetriNetUnfolderBase]: 939/1757 cut-off events. [2024-06-20 15:54:32,412 INFO L125 PetriNetUnfolderBase]: For 426704/426704 co-relation queries the response was YES. [2024-06-20 15:54:32,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16860 conditions, 1757 events. 939/1757 cut-off events. For 426704/426704 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10868 event pairs, 43 based on Foata normal form. 2/1757 useless extension candidates. Maximal degree in co-relation 16651. Up to 1526 conditions per place. [2024-06-20 15:54:32,438 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 474 selfloop transitions, 37 changer transitions 0/514 dead transitions. [2024-06-20 15:54:32,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 514 transitions, 8178 flow [2024-06-20 15:54:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:54:32,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:54:32,440 INFO L175 Difference]: Start difference. First operand has 477 places, 492 transitions, 7022 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:54:32,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 514 transitions, 8178 flow [2024-06-20 15:54:33,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 514 transitions, 8068 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-20 15:54:33,892 INFO L231 Difference]: Finished difference. Result has 480 places, 494 transitions, 7062 flow [2024-06-20 15:54:33,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6912, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7062, PETRI_PLACES=480, PETRI_TRANSITIONS=494} [2024-06-20 15:54:33,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 449 predicate places. [2024-06-20 15:54:33,893 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 494 transitions, 7062 flow [2024-06-20 15:54:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:33,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:33,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:33,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 15:54:33,894 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)] === [2024-06-20 15:54:33,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1217198337, now seen corresponding path program 5 times [2024-06-20 15:54:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:33,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869417384] [2024-06-20 15:54:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:33,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:35,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:35,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869417384] [2024-06-20 15:54:35,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869417384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:35,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:35,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319773130] [2024-06-20 15:54:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:35,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:35,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:35,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 494 transitions, 7062 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:35,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:35,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:35,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:35,937 INFO L124 PetriNetUnfolderBase]: 943/1764 cut-off events. [2024-06-20 15:54:35,938 INFO L125 PetriNetUnfolderBase]: For 432431/432431 co-relation queries the response was YES. [2024-06-20 15:54:35,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16943 conditions, 1764 events. 943/1764 cut-off events. For 432431/432431 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 10920 event pairs, 41 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 16732. Up to 1556 conditions per place. [2024-06-20 15:54:35,965 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 482 selfloop transitions, 30 changer transitions 0/515 dead transitions. [2024-06-20 15:54:35,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 515 transitions, 8204 flow [2024-06-20 15:54:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:54:35,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-20 15:54:35,966 INFO L175 Difference]: Start difference. First operand has 480 places, 494 transitions, 7062 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:54:35,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 515 transitions, 8204 flow [2024-06-20 15:54:37,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 515 transitions, 8088 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-20 15:54:37,578 INFO L231 Difference]: Finished difference. Result has 483 places, 495 transitions, 7064 flow [2024-06-20 15:54:37,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6946, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7064, PETRI_PLACES=483, PETRI_TRANSITIONS=495} [2024-06-20 15:54:37,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-20 15:54:37,578 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 495 transitions, 7064 flow [2024-06-20 15:54:37,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:37,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:37,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:37,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 15:54:37,579 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)] === [2024-06-20 15:54:37,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1211688087, now seen corresponding path program 6 times [2024-06-20 15:54:37,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:37,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862326864] [2024-06-20 15:54:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:37,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:38,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:38,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862326864] [2024-06-20 15:54:38,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862326864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:38,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:38,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:38,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673565351] [2024-06-20 15:54:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:38,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:38,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:39,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 495 transitions, 7064 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:39,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:39,809 INFO L124 PetriNetUnfolderBase]: 947/1772 cut-off events. [2024-06-20 15:54:39,809 INFO L125 PetriNetUnfolderBase]: For 438181/438181 co-relation queries the response was YES. [2024-06-20 15:54:39,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17003 conditions, 1772 events. 947/1772 cut-off events. For 438181/438181 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10999 event pairs, 43 based on Foata normal form. 2/1771 useless extension candidates. Maximal degree in co-relation 16791. Up to 1561 conditions per place. [2024-06-20 15:54:39,836 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 478 selfloop transitions, 34 changer transitions 0/515 dead transitions. [2024-06-20 15:54:39,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 515 transitions, 8206 flow [2024-06-20 15:54:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:54:39,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:54:39,837 INFO L175 Difference]: Start difference. First operand has 483 places, 495 transitions, 7064 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:54:39,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 515 transitions, 8206 flow [2024-06-20 15:54:41,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 515 transitions, 8098 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-20 15:54:41,372 INFO L231 Difference]: Finished difference. Result has 485 places, 496 transitions, 7084 flow [2024-06-20 15:54:41,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6956, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7084, PETRI_PLACES=485, PETRI_TRANSITIONS=496} [2024-06-20 15:54:41,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 454 predicate places. [2024-06-20 15:54:41,372 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 496 transitions, 7084 flow [2024-06-20 15:54:41,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:41,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:41,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:41,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 15:54:41,373 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)] === [2024-06-20 15:54:41,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1211480325, now seen corresponding path program 1 times [2024-06-20 15:54:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:41,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489993388] [2024-06-20 15:54:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:43,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489993388] [2024-06-20 15:54:43,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489993388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:43,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:43,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:54:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546830281] [2024-06-20 15:54:43,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:43,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:54:43,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:54:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:54:43,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:43,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 496 transitions, 7084 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:43,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:43,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:43,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:43,992 INFO L124 PetriNetUnfolderBase]: 950/1777 cut-off events. [2024-06-20 15:54:43,992 INFO L125 PetriNetUnfolderBase]: For 431220/431220 co-relation queries the response was YES. [2024-06-20 15:54:44,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17041 conditions, 1777 events. 950/1777 cut-off events. For 431220/431220 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11023 event pairs, 43 based on Foata normal form. 1/1775 useless extension candidates. Maximal degree in co-relation 16828. Up to 1544 conditions per place. [2024-06-20 15:54:44,018 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 469 selfloop transitions, 46 changer transitions 0/518 dead transitions. [2024-06-20 15:54:44,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 518 transitions, 8576 flow [2024-06-20 15:54:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:54:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:54:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:54:44,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:54:44,019 INFO L175 Difference]: Start difference. First operand has 485 places, 496 transitions, 7084 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:54:44,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 518 transitions, 8576 flow [2024-06-20 15:54:45,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 518 transitions, 8458 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-20 15:54:45,698 INFO L231 Difference]: Finished difference. Result has 488 places, 498 transitions, 7147 flow [2024-06-20 15:54:45,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6966, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7147, PETRI_PLACES=488, PETRI_TRANSITIONS=498} [2024-06-20 15:54:45,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 457 predicate places. [2024-06-20 15:54:45,698 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 498 transitions, 7147 flow [2024-06-20 15:54:45,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:45,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:45,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:45,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 15:54:45,699 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)] === [2024-06-20 15:54:45,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1211682135, now seen corresponding path program 2 times [2024-06-20 15:54:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136472471] [2024-06-20 15:54:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136472471] [2024-06-20 15:54:47,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136472471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:47,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:47,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:54:47,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202329339] [2024-06-20 15:54:47,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:47,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:54:47,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:47,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:54:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:54:47,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:47,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 498 transitions, 7147 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:47,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:47,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:47,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:48,213 INFO L124 PetriNetUnfolderBase]: 948/1774 cut-off events. [2024-06-20 15:54:48,214 INFO L125 PetriNetUnfolderBase]: For 423010/423010 co-relation queries the response was YES. [2024-06-20 15:54:48,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16800 conditions, 1774 events. 948/1774 cut-off events. For 423010/423010 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10978 event pairs, 43 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 16586. Up to 1542 conditions per place. [2024-06-20 15:54:48,242 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 468 selfloop transitions, 46 changer transitions 0/517 dead transitions. [2024-06-20 15:54:48,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 517 transitions, 8239 flow [2024-06-20 15:54:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:54:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:54:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:54:48,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:54:48,243 INFO L175 Difference]: Start difference. First operand has 488 places, 498 transitions, 7147 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:54:48,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 517 transitions, 8239 flow [2024-06-20 15:54:50,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 517 transitions, 8029 flow, removed 59 selfloop flow, removed 10 redundant places. [2024-06-20 15:54:50,108 INFO L231 Difference]: Finished difference. Result has 490 places, 498 transitions, 7034 flow [2024-06-20 15:54:50,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6937, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7034, PETRI_PLACES=490, PETRI_TRANSITIONS=498} [2024-06-20 15:54:50,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-20 15:54:50,109 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 498 transitions, 7034 flow [2024-06-20 15:54:50,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:50,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:50,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:50,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 15:54:50,110 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)] === [2024-06-20 15:54:50,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1211472606, now seen corresponding path program 1 times [2024-06-20 15:54:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117804704] [2024-06-20 15:54:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117804704] [2024-06-20 15:54:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117804704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:51,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:51,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:54:51,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154937461] [2024-06-20 15:54:51,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:51,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:54:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:51,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:54:51,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:54:51,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:51,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 498 transitions, 7034 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:51,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:51,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:51,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:52,499 INFO L124 PetriNetUnfolderBase]: 964/1810 cut-off events. [2024-06-20 15:54:52,499 INFO L125 PetriNetUnfolderBase]: For 535121/535121 co-relation queries the response was YES. [2024-06-20 15:54:52,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16999 conditions, 1810 events. 964/1810 cut-off events. For 535121/535121 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11273 event pairs, 47 based on Foata normal form. 10/1817 useless extension candidates. Maximal degree in co-relation 16784. Up to 1558 conditions per place. [2024-06-20 15:54:52,527 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 478 selfloop transitions, 37 changer transitions 4/522 dead transitions. [2024-06-20 15:54:52,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 522 transitions, 8250 flow [2024-06-20 15:54:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:54:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:54:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:54:52,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 15:54:52,528 INFO L175 Difference]: Start difference. First operand has 490 places, 498 transitions, 7034 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:54:52,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 522 transitions, 8250 flow [2024-06-20 15:54:54,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 522 transitions, 8123 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 15:54:54,281 INFO L231 Difference]: Finished difference. Result has 490 places, 498 transitions, 7006 flow [2024-06-20 15:54:54,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7006, PETRI_PLACES=490, PETRI_TRANSITIONS=498} [2024-06-20 15:54:54,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-20 15:54:54,282 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 498 transitions, 7006 flow [2024-06-20 15:54:54,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:54,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:54,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:54,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-20 15:54:54,283 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)] === [2024-06-20 15:54:54,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash -4655127, now seen corresponding path program 7 times [2024-06-20 15:54:54,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:54,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729992819] [2024-06-20 15:54:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:54,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:55,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729992819] [2024-06-20 15:54:55,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729992819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:55,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:55,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:55,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525538656] [2024-06-20 15:54:55,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:55,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:55,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:55,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:55,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:55,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 498 transitions, 7006 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:55,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:55,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:55,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:56,165 INFO L124 PetriNetUnfolderBase]: 962/1809 cut-off events. [2024-06-20 15:54:56,166 INFO L125 PetriNetUnfolderBase]: For 447227/447227 co-relation queries the response was YES. [2024-06-20 15:54:56,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17047 conditions, 1809 events. 962/1809 cut-off events. For 447227/447227 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11292 event pairs, 48 based on Foata normal form. 2/1808 useless extension candidates. Maximal degree in co-relation 16831. Up to 1553 conditions per place. [2024-06-20 15:54:56,194 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 463 selfloop transitions, 49 changer transitions 0/515 dead transitions. [2024-06-20 15:54:56,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 515 transitions, 8133 flow [2024-06-20 15:54:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:54:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:54:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:54:56,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:54:56,195 INFO L175 Difference]: Start difference. First operand has 490 places, 498 transitions, 7006 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:54:56,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 515 transitions, 8133 flow [2024-06-20 15:54:57,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 515 transitions, 8005 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-20 15:54:57,956 INFO L231 Difference]: Finished difference. Result has 490 places, 499 transitions, 7038 flow [2024-06-20 15:54:57,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7038, PETRI_PLACES=490, PETRI_TRANSITIONS=499} [2024-06-20 15:54:57,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-20 15:54:57,957 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 499 transitions, 7038 flow [2024-06-20 15:54:57,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:57,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:54:57,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:54:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-20 15:54:57,958 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)] === [2024-06-20 15:54:57,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:54:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash -377204609, now seen corresponding path program 8 times [2024-06-20 15:54:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:54:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672339336] [2024-06-20 15:54:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:54:57,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:54:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:54:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:54:59,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:54:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672339336] [2024-06-20 15:54:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672339336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:54:59,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:54:59,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:54:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881851244] [2024-06-20 15:54:59,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:54:59,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:54:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:54:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:54:59,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:54:59,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:54:59,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 499 transitions, 7038 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:54:59,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:54:59,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:54:59,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:54:59,902 INFO L124 PetriNetUnfolderBase]: 966/1817 cut-off events. [2024-06-20 15:54:59,902 INFO L125 PetriNetUnfolderBase]: For 453788/453788 co-relation queries the response was YES. [2024-06-20 15:54:59,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17158 conditions, 1817 events. 966/1817 cut-off events. For 453788/453788 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 11342 event pairs, 48 based on Foata normal form. 2/1816 useless extension candidates. Maximal degree in co-relation 16942. Up to 1593 conditions per place. [2024-06-20 15:55:00,044 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 476 selfloop transitions, 38 changer transitions 0/517 dead transitions. [2024-06-20 15:55:00,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 517 transitions, 8187 flow [2024-06-20 15:55:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:55:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:55:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:55:00,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-20 15:55:00,045 INFO L175 Difference]: Start difference. First operand has 490 places, 499 transitions, 7038 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:55:00,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 517 transitions, 8187 flow [2024-06-20 15:55:01,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 517 transitions, 8035 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-20 15:55:01,827 INFO L231 Difference]: Finished difference. Result has 493 places, 501 transitions, 7048 flow [2024-06-20 15:55:01,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6888, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7048, PETRI_PLACES=493, PETRI_TRANSITIONS=501} [2024-06-20 15:55:01,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 462 predicate places. [2024-06-20 15:55:01,828 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 501 transitions, 7048 flow [2024-06-20 15:55:01,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:01,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:01,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:01,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-20 15:55:01,828 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)] === [2024-06-20 15:55:01,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash -371842229, now seen corresponding path program 9 times [2024-06-20 15:55:01,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:01,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728832826] [2024-06-20 15:55:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:01,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:03,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728832826] [2024-06-20 15:55:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728832826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:03,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:03,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:55:03,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113474719] [2024-06-20 15:55:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:03,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:55:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:03,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:55:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:55:03,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:03,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 501 transitions, 7048 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:03,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:03,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:03,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:03,938 INFO L124 PetriNetUnfolderBase]: 970/1825 cut-off events. [2024-06-20 15:55:03,939 INFO L125 PetriNetUnfolderBase]: For 459305/459305 co-relation queries the response was YES. [2024-06-20 15:55:03,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17214 conditions, 1825 events. 970/1825 cut-off events. For 459305/459305 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11423 event pairs, 50 based on Foata normal form. 2/1824 useless extension candidates. Maximal degree in co-relation 16996. Up to 1593 conditions per place. [2024-06-20 15:55:03,968 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 474 selfloop transitions, 41 changer transitions 0/518 dead transitions. [2024-06-20 15:55:03,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 518 transitions, 8185 flow [2024-06-20 15:55:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:55:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:55:03,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:55:03,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:55:03,969 INFO L175 Difference]: Start difference. First operand has 493 places, 501 transitions, 7048 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:55:03,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 518 transitions, 8185 flow [2024-06-20 15:55:05,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 518 transitions, 8059 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-20 15:55:05,866 INFO L231 Difference]: Finished difference. Result has 496 places, 502 transitions, 7070 flow [2024-06-20 15:55:05,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6922, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7070, PETRI_PLACES=496, PETRI_TRANSITIONS=502} [2024-06-20 15:55:05,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 465 predicate places. [2024-06-20 15:55:05,866 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 502 transitions, 7070 flow [2024-06-20 15:55:05,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:05,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:05,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:05,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-20 15:55:05,867 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)] === [2024-06-20 15:55:05,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash -377352479, now seen corresponding path program 10 times [2024-06-20 15:55:05,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:05,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526695367] [2024-06-20 15:55:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526695367] [2024-06-20 15:55:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526695367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:07,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:55:07,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065476774] [2024-06-20 15:55:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:07,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:55:07,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:55:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:55:07,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:07,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 502 transitions, 7070 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:07,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:07,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:07,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:07,834 INFO L124 PetriNetUnfolderBase]: 974/1833 cut-off events. [2024-06-20 15:55:07,835 INFO L125 PetriNetUnfolderBase]: For 465258/465258 co-relation queries the response was YES. [2024-06-20 15:55:07,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17291 conditions, 1833 events. 974/1833 cut-off events. For 465258/465258 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 11490 event pairs, 48 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 17072. Up to 1604 conditions per place. [2024-06-20 15:55:07,864 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 480 selfloop transitions, 37 changer transitions 0/520 dead transitions. [2024-06-20 15:55:07,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 520 transitions, 8215 flow [2024-06-20 15:55:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:55:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:55:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:55:07,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-20 15:55:07,865 INFO L175 Difference]: Start difference. First operand has 496 places, 502 transitions, 7070 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:55:07,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 520 transitions, 8215 flow [2024-06-20 15:55:09,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 520 transitions, 8077 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-20 15:55:09,871 INFO L231 Difference]: Finished difference. Result has 498 places, 503 transitions, 7074 flow [2024-06-20 15:55:09,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6932, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7074, PETRI_PLACES=498, PETRI_TRANSITIONS=503} [2024-06-20 15:55:09,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 467 predicate places. [2024-06-20 15:55:09,871 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 503 transitions, 7074 flow [2024-06-20 15:55:09,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:09,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:09,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:09,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-20 15:55:09,872 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)] === [2024-06-20 15:55:09,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash -371634467, now seen corresponding path program 3 times [2024-06-20 15:55:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:09,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17194747] [2024-06-20 15:55:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:11,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17194747] [2024-06-20 15:55:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17194747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:11,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:11,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:11,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811955835] [2024-06-20 15:55:11,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:11,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:11,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:11,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:11,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:11,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 503 transitions, 7074 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:11,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:11,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:11,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:12,765 INFO L124 PetriNetUnfolderBase]: 980/1846 cut-off events. [2024-06-20 15:55:12,765 INFO L125 PetriNetUnfolderBase]: For 470954/470954 co-relation queries the response was YES. [2024-06-20 15:55:12,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17395 conditions, 1846 events. 980/1846 cut-off events. For 470954/470954 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 11629 event pairs, 52 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 17175. Up to 1562 conditions per place. [2024-06-20 15:55:12,795 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 463 selfloop transitions, 59 changer transitions 0/525 dead transitions. [2024-06-20 15:55:12,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 525 transitions, 8667 flow [2024-06-20 15:55:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 15:55:12,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 15:55:12,796 INFO L175 Difference]: Start difference. First operand has 498 places, 503 transitions, 7074 flow. Second operand 12 states and 152 transitions. [2024-06-20 15:55:12,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 525 transitions, 8667 flow [2024-06-20 15:55:14,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 525 transitions, 8535 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-20 15:55:14,811 INFO L231 Difference]: Finished difference. Result has 502 places, 507 transitions, 7241 flow [2024-06-20 15:55:14,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6942, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7241, PETRI_PLACES=502, PETRI_TRANSITIONS=507} [2024-06-20 15:55:14,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 471 predicate places. [2024-06-20 15:55:14,811 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 507 transitions, 7241 flow [2024-06-20 15:55:14,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:14,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:14,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:14,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-20 15:55:14,812 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)] === [2024-06-20 15:55:14,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash -177687338, now seen corresponding path program 2 times [2024-06-20 15:55:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:14,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099161751] [2024-06-20 15:55:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:14,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:16,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:16,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099161751] [2024-06-20 15:55:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099161751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:16,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321848712] [2024-06-20 15:55:16,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:16,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:16,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:16,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 507 transitions, 7241 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:16,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:16,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:17,149 INFO L124 PetriNetUnfolderBase]: 984/1853 cut-off events. [2024-06-20 15:55:17,149 INFO L125 PetriNetUnfolderBase]: For 481248/481248 co-relation queries the response was YES. [2024-06-20 15:55:17,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17484 conditions, 1853 events. 984/1853 cut-off events. For 481248/481248 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11619 event pairs, 50 based on Foata normal form. 2/1852 useless extension candidates. Maximal degree in co-relation 17262. Up to 1580 conditions per place. [2024-06-20 15:55:17,179 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 467 selfloop transitions, 55 changer transitions 0/525 dead transitions. [2024-06-20 15:55:17,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 525 transitions, 8370 flow [2024-06-20 15:55:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-20 15:55:17,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-20 15:55:17,180 INFO L175 Difference]: Start difference. First operand has 502 places, 507 transitions, 7241 flow. Second operand 12 states and 148 transitions. [2024-06-20 15:55:17,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 525 transitions, 8370 flow [2024-06-20 15:55:18,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 525 transitions, 8021 flow, removed 72 selfloop flow, removed 12 redundant places. [2024-06-20 15:55:18,853 INFO L231 Difference]: Finished difference. Result has 502 places, 508 transitions, 7044 flow [2024-06-20 15:55:18,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6892, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7044, PETRI_PLACES=502, PETRI_TRANSITIONS=508} [2024-06-20 15:55:18,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 471 predicate places. [2024-06-20 15:55:18,853 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 508 transitions, 7044 flow [2024-06-20 15:55:18,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:18,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:18,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:18,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-20 15:55:18,854 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)] === [2024-06-20 15:55:18,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash 180914873, now seen corresponding path program 4 times [2024-06-20 15:55:18,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:18,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549804343] [2024-06-20 15:55:18,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:18,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:20,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:20,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549804343] [2024-06-20 15:55:20,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549804343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:20,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:20,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:20,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663373406] [2024-06-20 15:55:20,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:20,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:20,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 508 transitions, 7044 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:20,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:20,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:20,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:21,701 INFO L124 PetriNetUnfolderBase]: 982/1851 cut-off events. [2024-06-20 15:55:21,701 INFO L125 PetriNetUnfolderBase]: For 451718/451718 co-relation queries the response was YES. [2024-06-20 15:55:21,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17049 conditions, 1851 events. 982/1851 cut-off events. For 451718/451718 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11681 event pairs, 52 based on Foata normal form. 1/1850 useless extension candidates. Maximal degree in co-relation 16828. Up to 1580 conditions per place. [2024-06-20 15:55:21,728 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 469 selfloop transitions, 53 changer transitions 0/525 dead transitions. [2024-06-20 15:55:21,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 525 transitions, 8141 flow [2024-06-20 15:55:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 15:55:21,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-20 15:55:21,730 INFO L175 Difference]: Start difference. First operand has 502 places, 508 transitions, 7044 flow. Second operand 12 states and 149 transitions. [2024-06-20 15:55:21,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 525 transitions, 8141 flow [2024-06-20 15:55:23,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 525 transitions, 7945 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-20 15:55:23,553 INFO L231 Difference]: Finished difference. Result has 504 places, 508 transitions, 6959 flow [2024-06-20 15:55:23,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6848, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6959, PETRI_PLACES=504, PETRI_TRANSITIONS=508} [2024-06-20 15:55:23,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 473 predicate places. [2024-06-20 15:55:23,554 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 508 transitions, 6959 flow [2024-06-20 15:55:23,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:23,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:23,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:23,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-20 15:55:23,554 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)] === [2024-06-20 15:55:23,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1531363491, now seen corresponding path program 5 times [2024-06-20 15:55:23,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:23,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704303385] [2024-06-20 15:55:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:23,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704303385] [2024-06-20 15:55:25,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704303385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:25,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:25,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:25,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213050603] [2024-06-20 15:55:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:25,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:25,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:25,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 508 transitions, 6959 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:25,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:25,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:25,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:26,600 INFO L124 PetriNetUnfolderBase]: 985/1855 cut-off events. [2024-06-20 15:55:26,600 INFO L125 PetriNetUnfolderBase]: For 456254/456254 co-relation queries the response was YES. [2024-06-20 15:55:26,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17042 conditions, 1855 events. 985/1855 cut-off events. For 456254/456254 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11685 event pairs, 52 based on Foata normal form. 1/1853 useless extension candidates. Maximal degree in co-relation 16820. Up to 1558 conditions per place. [2024-06-20 15:55:26,630 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 457 selfloop transitions, 66 changer transitions 0/526 dead transitions. [2024-06-20 15:55:26,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 526 transitions, 8130 flow [2024-06-20 15:55:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:55:26,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:55:26,631 INFO L175 Difference]: Start difference. First operand has 504 places, 508 transitions, 6959 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:55:26,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 526 transitions, 8130 flow [2024-06-20 15:55:28,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 526 transitions, 8004 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:55:28,438 INFO L231 Difference]: Finished difference. Result has 505 places, 510 transitions, 7052 flow [2024-06-20 15:55:28,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6833, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7052, PETRI_PLACES=505, PETRI_TRANSITIONS=510} [2024-06-20 15:55:28,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-20 15:55:28,439 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 510 transitions, 7052 flow [2024-06-20 15:55:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:28,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:28,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:28,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-20 15:55:28,439 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)] === [2024-06-20 15:55:28,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash -4649175, now seen corresponding path program 6 times [2024-06-20 15:55:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:28,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552304462] [2024-06-20 15:55:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:28,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552304462] [2024-06-20 15:55:29,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552304462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:29,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:29,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:29,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459321462] [2024-06-20 15:55:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:29,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:29,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 510 transitions, 7052 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:29,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:29,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:29,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:30,745 INFO L124 PetriNetUnfolderBase]: 983/1852 cut-off events. [2024-06-20 15:55:30,745 INFO L125 PetriNetUnfolderBase]: For 447784/447784 co-relation queries the response was YES. [2024-06-20 15:55:30,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16881 conditions, 1852 events. 983/1852 cut-off events. For 447784/447784 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11647 event pairs, 52 based on Foata normal form. 1/1850 useless extension candidates. Maximal degree in co-relation 16658. Up to 1555 conditions per place. [2024-06-20 15:55:30,773 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 456 selfloop transitions, 67 changer transitions 0/526 dead transitions. [2024-06-20 15:55:30,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 526 transitions, 8145 flow [2024-06-20 15:55:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 15:55:30,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-20 15:55:30,774 INFO L175 Difference]: Start difference. First operand has 505 places, 510 transitions, 7052 flow. Second operand 12 states and 149 transitions. [2024-06-20 15:55:30,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 526 transitions, 8145 flow [2024-06-20 15:55:32,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 526 transitions, 7851 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-20 15:55:32,665 INFO L231 Difference]: Finished difference. Result has 509 places, 510 transitions, 6897 flow [2024-06-20 15:55:32,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6758, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6897, PETRI_PLACES=509, PETRI_TRANSITIONS=510} [2024-06-20 15:55:32,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 478 predicate places. [2024-06-20 15:55:32,666 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 510 transitions, 6897 flow [2024-06-20 15:55:32,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:32,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:32,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:32,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-20 15:55:32,666 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)] === [2024-06-20 15:55:32,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2978964, now seen corresponding path program 3 times [2024-06-20 15:55:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:32,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074838408] [2024-06-20 15:55:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074838408] [2024-06-20 15:55:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074838408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977629433] [2024-06-20 15:55:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:33,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:33,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:34,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:34,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 510 transitions, 6897 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:34,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:34,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:34,854 INFO L124 PetriNetUnfolderBase]: 1023/1932 cut-off events. [2024-06-20 15:55:34,854 INFO L125 PetriNetUnfolderBase]: For 632155/632155 co-relation queries the response was YES. [2024-06-20 15:55:34,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19480 conditions, 1932 events. 1023/1932 cut-off events. For 632155/632155 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12241 event pairs, 68 based on Foata normal form. 2/1931 useless extension candidates. Maximal degree in co-relation 19256. Up to 1519 conditions per place. [2024-06-20 15:55:34,886 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 466 selfloop transitions, 65 changer transitions 0/534 dead transitions. [2024-06-20 15:55:34,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 534 transitions, 8542 flow [2024-06-20 15:55:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:55:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:55:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-20 15:55:34,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-20 15:55:34,887 INFO L175 Difference]: Start difference. First operand has 509 places, 510 transitions, 6897 flow. Second operand 11 states and 145 transitions. [2024-06-20 15:55:34,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 534 transitions, 8542 flow [2024-06-20 15:55:37,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 534 transitions, 8380 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 15:55:37,212 INFO L231 Difference]: Finished difference. Result has 509 places, 512 transitions, 6947 flow [2024-06-20 15:55:37,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6735, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6947, PETRI_PLACES=509, PETRI_TRANSITIONS=512} [2024-06-20 15:55:37,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 478 predicate places. [2024-06-20 15:55:37,213 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 512 transitions, 6947 flow [2024-06-20 15:55:37,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:37,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:37,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:37,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-20 15:55:37,214 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)] === [2024-06-20 15:55:37,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:37,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2710194, now seen corresponding path program 4 times [2024-06-20 15:55:37,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:37,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576763653] [2024-06-20 15:55:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:37,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:38,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576763653] [2024-06-20 15:55:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576763653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:38,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:38,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881270757] [2024-06-20 15:55:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:38,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:38,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:38,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:38,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:38,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 512 transitions, 6947 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:38,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:38,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:38,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:39,543 INFO L124 PetriNetUnfolderBase]: 1030/1946 cut-off events. [2024-06-20 15:55:39,543 INFO L125 PetriNetUnfolderBase]: For 640086/640086 co-relation queries the response was YES. [2024-06-20 15:55:39,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19652 conditions, 1946 events. 1030/1946 cut-off events. For 640086/640086 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 12357 event pairs, 72 based on Foata normal form. 2/1946 useless extension candidates. Maximal degree in co-relation 19427. Up to 1634 conditions per place. [2024-06-20 15:55:39,571 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 459 selfloop transitions, 71 changer transitions 0/533 dead transitions. [2024-06-20 15:55:39,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 533 transitions, 8129 flow [2024-06-20 15:55:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 15:55:39,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-20 15:55:39,573 INFO L175 Difference]: Start difference. First operand has 509 places, 512 transitions, 6947 flow. Second operand 12 states and 149 transitions. [2024-06-20 15:55:39,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 533 transitions, 8129 flow [2024-06-20 15:55:41,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 533 transitions, 8004 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-20 15:55:41,898 INFO L231 Difference]: Finished difference. Result has 515 places, 515 transitions, 7044 flow [2024-06-20 15:55:41,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7044, PETRI_PLACES=515, PETRI_TRANSITIONS=515} [2024-06-20 15:55:41,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 484 predicate places. [2024-06-20 15:55:41,898 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 515 transitions, 7044 flow [2024-06-20 15:55:41,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:41,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:41,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:41,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-20 15:55:41,899 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)] === [2024-06-20 15:55:41,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash -371626748, now seen corresponding path program 5 times [2024-06-20 15:55:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:41,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683191493] [2024-06-20 15:55:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:43,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683191493] [2024-06-20 15:55:43,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683191493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:43,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:43,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:43,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981280674] [2024-06-20 15:55:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:43,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:43,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:43,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 515 transitions, 7044 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:43,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:43,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:43,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:44,218 INFO L124 PetriNetUnfolderBase]: 1039/1968 cut-off events. [2024-06-20 15:55:44,218 INFO L125 PetriNetUnfolderBase]: For 728430/728430 co-relation queries the response was YES. [2024-06-20 15:55:44,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19519 conditions, 1968 events. 1039/1968 cut-off events. For 728430/728430 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 12498 event pairs, 73 based on Foata normal form. 10/1975 useless extension candidates. Maximal degree in co-relation 19291. Up to 1693 conditions per place. [2024-06-20 15:55:44,251 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 485 selfloop transitions, 44 changer transitions 4/536 dead transitions. [2024-06-20 15:55:44,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 536 transitions, 8279 flow [2024-06-20 15:55:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:55:44,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 15:55:44,253 INFO L175 Difference]: Start difference. First operand has 515 places, 515 transitions, 7044 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:55:44,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 536 transitions, 8279 flow [2024-06-20 15:55:46,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 536 transitions, 8014 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-20 15:55:46,881 INFO L231 Difference]: Finished difference. Result has 518 places, 515 transitions, 6902 flow [2024-06-20 15:55:46,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6902, PETRI_PLACES=518, PETRI_TRANSITIONS=515} [2024-06-20 15:55:46,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-20 15:55:46,881 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 515 transitions, 6902 flow [2024-06-20 15:55:46,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:46,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:46,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:46,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-20 15:55:46,882 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)] === [2024-06-20 15:55:46,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:46,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2702475, now seen corresponding path program 7 times [2024-06-20 15:55:46,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:46,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120417324] [2024-06-20 15:55:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:46,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:48,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:48,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120417324] [2024-06-20 15:55:48,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120417324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:48,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:48,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566399758] [2024-06-20 15:55:48,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:48,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:48,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:48,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:48,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:48,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 515 transitions, 6902 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:48,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:48,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:48,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:49,179 INFO L124 PetriNetUnfolderBase]: 1031/1954 cut-off events. [2024-06-20 15:55:49,180 INFO L125 PetriNetUnfolderBase]: For 595346/595346 co-relation queries the response was YES. [2024-06-20 15:55:49,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19106 conditions, 1954 events. 1031/1954 cut-off events. For 595346/595346 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 12397 event pairs, 75 based on Foata normal form. 1/1953 useless extension candidates. Maximal degree in co-relation 18877. Up to 1561 conditions per place. [2024-06-20 15:55:49,210 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 426 selfloop transitions, 103 changer transitions 0/532 dead transitions. [2024-06-20 15:55:49,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 532 transitions, 8013 flow [2024-06-20 15:55:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:55:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:55:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 15:55:49,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 15:55:49,211 INFO L175 Difference]: Start difference. First operand has 518 places, 515 transitions, 6902 flow. Second operand 12 states and 152 transitions. [2024-06-20 15:55:49,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 532 transitions, 8013 flow [2024-06-20 15:55:51,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 532 transitions, 7805 flow, removed 42 selfloop flow, removed 12 redundant places. [2024-06-20 15:55:51,764 INFO L231 Difference]: Finished difference. Result has 518 places, 515 transitions, 6905 flow [2024-06-20 15:55:51,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6694, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6905, PETRI_PLACES=518, PETRI_TRANSITIONS=515} [2024-06-20 15:55:51,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-20 15:55:51,764 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 515 transitions, 6905 flow [2024-06-20 15:55:51,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:51,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:51,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:51,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-20 15:55:51,765 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)] === [2024-06-20 15:55:51,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash 549395282, now seen corresponding path program 6 times [2024-06-20 15:55:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450823179] [2024-06-20 15:55:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:53,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:53,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450823179] [2024-06-20 15:55:53,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450823179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:53,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:55:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686994044] [2024-06-20 15:55:53,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:53,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:55:53,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:55:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:55:53,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:53,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 515 transitions, 6905 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:53,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:53,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:53,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:54,151 INFO L124 PetriNetUnfolderBase]: 1028/1948 cut-off events. [2024-06-20 15:55:54,151 INFO L125 PetriNetUnfolderBase]: For 586062/586062 co-relation queries the response was YES. [2024-06-20 15:55:54,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18724 conditions, 1948 events. 1028/1948 cut-off events. For 586062/586062 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 12366 event pairs, 72 based on Foata normal form. 2/1947 useless extension candidates. Maximal degree in co-relation 18495. Up to 1650 conditions per place. [2024-06-20 15:55:54,183 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 463 selfloop transitions, 65 changer transitions 0/531 dead transitions. [2024-06-20 15:55:54,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 531 transitions, 8008 flow [2024-06-20 15:55:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:55:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:55:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:55:54,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 15:55:54,185 INFO L175 Difference]: Start difference. First operand has 518 places, 515 transitions, 6905 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:55:54,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 531 transitions, 8008 flow [2024-06-20 15:55:56,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 531 transitions, 7789 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:55:56,674 INFO L231 Difference]: Finished difference. Result has 518 places, 515 transitions, 6822 flow [2024-06-20 15:55:56,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6686, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6822, PETRI_PLACES=518, PETRI_TRANSITIONS=515} [2024-06-20 15:55:56,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-20 15:55:56,675 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 515 transitions, 6822 flow [2024-06-20 15:55:56,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:56,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:55:56,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:55:56,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-20 15:55:56,675 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)] === [2024-06-20 15:55:56,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:55:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash 521336953, now seen corresponding path program 11 times [2024-06-20 15:55:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:55:56,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177507710] [2024-06-20 15:55:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:55:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:55:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:55:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:55:57,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:55:57,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177507710] [2024-06-20 15:55:57,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177507710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:55:57,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:55:57,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:55:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036356996] [2024-06-20 15:55:57,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:55:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:55:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:55:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:55:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:55:58,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:55:58,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 515 transitions, 6822 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:55:58,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:55:58,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:55:58,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:55:58,805 INFO L124 PetriNetUnfolderBase]: 1032/1957 cut-off events. [2024-06-20 15:55:58,805 INFO L125 PetriNetUnfolderBase]: For 594477/594477 co-relation queries the response was YES. [2024-06-20 15:55:58,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18827 conditions, 1957 events. 1032/1957 cut-off events. For 594477/594477 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12431 event pairs, 80 based on Foata normal form. 2/1957 useless extension candidates. Maximal degree in co-relation 18597. Up to 1593 conditions per place. [2024-06-20 15:55:58,838 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 437 selfloop transitions, 90 changer transitions 0/530 dead transitions. [2024-06-20 15:55:58,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 530 transitions, 7976 flow [2024-06-20 15:55:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:55:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:55:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:55:58,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:55:58,839 INFO L175 Difference]: Start difference. First operand has 518 places, 515 transitions, 6822 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:55:58,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 530 transitions, 7976 flow [2024-06-20 15:56:01,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 530 transitions, 7796 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-20 15:56:01,678 INFO L231 Difference]: Finished difference. Result has 519 places, 516 transitions, 6892 flow [2024-06-20 15:56:01,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6642, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6892, PETRI_PLACES=519, PETRI_TRANSITIONS=516} [2024-06-20 15:56:01,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 488 predicate places. [2024-06-20 15:56:01,679 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 516 transitions, 6892 flow [2024-06-20 15:56:01,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:01,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:01,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:01,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-20 15:56:01,679 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)] === [2024-06-20 15:56:01,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:01,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2054691991, now seen corresponding path program 12 times [2024-06-20 15:56:01,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:01,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808366116] [2024-06-20 15:56:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:02,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808366116] [2024-06-20 15:56:02,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808366116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:02,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:02,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:56:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106965627] [2024-06-20 15:56:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:02,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:56:02,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:02,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:56:02,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:56:02,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:02,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 516 transitions, 6892 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:02,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:02,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:02,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:03,680 INFO L124 PetriNetUnfolderBase]: 1036/1965 cut-off events. [2024-06-20 15:56:03,681 INFO L125 PetriNetUnfolderBase]: For 596093/596093 co-relation queries the response was YES. [2024-06-20 15:56:03,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18936 conditions, 1965 events. 1036/1965 cut-off events. For 596093/596093 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 12512 event pairs, 76 based on Foata normal form. 2/1965 useless extension candidates. Maximal degree in co-relation 18705. Up to 1683 conditions per place. [2024-06-20 15:56:03,713 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 465 selfloop transitions, 62 changer transitions 0/530 dead transitions. [2024-06-20 15:56:03,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 530 transitions, 8042 flow [2024-06-20 15:56:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:56:03,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:56:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:56:03,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-20 15:56:03,714 INFO L175 Difference]: Start difference. First operand has 519 places, 516 transitions, 6892 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:56:03,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 530 transitions, 8042 flow [2024-06-20 15:56:06,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 530 transitions, 7802 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-20 15:56:06,222 INFO L231 Difference]: Finished difference. Result has 521 places, 517 transitions, 6849 flow [2024-06-20 15:56:06,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6652, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6849, PETRI_PLACES=521, PETRI_TRANSITIONS=517} [2024-06-20 15:56:06,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 490 predicate places. [2024-06-20 15:56:06,223 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 517 transitions, 6849 flow [2024-06-20 15:56:06,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:06,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:06,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:06,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-20 15:56:06,224 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)] === [2024-06-20 15:56:06,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:06,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1493584745, now seen corresponding path program 13 times [2024-06-20 15:56:06,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:06,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434625482] [2024-06-20 15:56:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:07,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434625482] [2024-06-20 15:56:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434625482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:07,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:07,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:56:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067601553] [2024-06-20 15:56:07,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:07,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:56:07,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:56:07,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:56:07,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:07,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 517 transitions, 6849 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:07,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:07,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:07,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:08,390 INFO L124 PetriNetUnfolderBase]: 1040/1973 cut-off events. [2024-06-20 15:56:08,390 INFO L125 PetriNetUnfolderBase]: For 602964/602964 co-relation queries the response was YES. [2024-06-20 15:56:08,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18956 conditions, 1973 events. 1040/1973 cut-off events. For 602964/602964 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12587 event pairs, 76 based on Foata normal form. 2/1973 useless extension candidates. Maximal degree in co-relation 18724. Up to 1709 conditions per place. [2024-06-20 15:56:08,424 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 474 selfloop transitions, 54 changer transitions 0/531 dead transitions. [2024-06-20 15:56:08,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 531 transitions, 8003 flow [2024-06-20 15:56:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:56:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:56:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:56:08,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-20 15:56:08,425 INFO L175 Difference]: Start difference. First operand has 521 places, 517 transitions, 6849 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:56:08,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 531 transitions, 8003 flow [2024-06-20 15:56:11,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 531 transitions, 7818 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-20 15:56:11,168 INFO L231 Difference]: Finished difference. Result has 523 places, 518 transitions, 6847 flow [2024-06-20 15:56:11,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6664, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6847, PETRI_PLACES=523, PETRI_TRANSITIONS=518} [2024-06-20 15:56:11,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 492 predicate places. [2024-06-20 15:56:11,169 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 518 transitions, 6847 flow [2024-06-20 15:56:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:11,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:11,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-20 15:56:11,169 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)] === [2024-06-20 15:56:11,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:11,169 INFO L85 PathProgramCache]: Analyzing trace with hash -904078627, now seen corresponding path program 14 times [2024-06-20 15:56:11,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:11,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517818027] [2024-06-20 15:56:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517818027] [2024-06-20 15:56:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517818027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:12,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:56:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029633362] [2024-06-20 15:56:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:12,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:56:12,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:56:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:56:12,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:12,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 518 transitions, 6847 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:12,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:12,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:12,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:13,231 INFO L124 PetriNetUnfolderBase]: 1044/1981 cut-off events. [2024-06-20 15:56:13,231 INFO L125 PetriNetUnfolderBase]: For 609796/609796 co-relation queries the response was YES. [2024-06-20 15:56:13,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19016 conditions, 1981 events. 1044/1981 cut-off events. For 609796/609796 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 12629 event pairs, 78 based on Foata normal form. 2/1981 useless extension candidates. Maximal degree in co-relation 18783. Up to 1729 conditions per place. [2024-06-20 15:56:13,260 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 481 selfloop transitions, 50 changer transitions 0/534 dead transitions. [2024-06-20 15:56:13,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 534 transitions, 8047 flow [2024-06-20 15:56:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:56:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:56:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:56:13,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-20 15:56:13,261 INFO L175 Difference]: Start difference. First operand has 523 places, 518 transitions, 6847 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:56:13,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 534 transitions, 8047 flow [2024-06-20 15:56:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 534 transitions, 7872 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-20 15:56:15,909 INFO L231 Difference]: Finished difference. Result has 526 places, 521 transitions, 6897 flow [2024-06-20 15:56:15,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6676, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6897, PETRI_PLACES=526, PETRI_TRANSITIONS=521} [2024-06-20 15:56:15,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 495 predicate places. [2024-06-20 15:56:15,910 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 521 transitions, 6897 flow [2024-06-20 15:56:15,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:15,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:15,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:15,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-20 15:56:15,911 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)] === [2024-06-20 15:56:15,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1488074495, now seen corresponding path program 15 times [2024-06-20 15:56:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:15,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275047470] [2024-06-20 15:56:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:15,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:17,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275047470] [2024-06-20 15:56:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275047470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:17,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:17,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:56:17,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608365838] [2024-06-20 15:56:17,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:17,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:56:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:56:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:56:17,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:17,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 521 transitions, 6897 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:17,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:17,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:17,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:17,938 INFO L124 PetriNetUnfolderBase]: 1048/1989 cut-off events. [2024-06-20 15:56:17,939 INFO L125 PetriNetUnfolderBase]: For 616961/616961 co-relation queries the response was YES. [2024-06-20 15:56:17,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19093 conditions, 1989 events. 1048/1989 cut-off events. For 616961/616961 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 12719 event pairs, 80 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 18858. Up to 1708 conditions per place. [2024-06-20 15:56:17,972 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 481 selfloop transitions, 53 changer transitions 0/537 dead transitions. [2024-06-20 15:56:17,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 537 transitions, 8075 flow [2024-06-20 15:56:17,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:56:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:56:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:56:17,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-20 15:56:17,973 INFO L175 Difference]: Start difference. First operand has 526 places, 521 transitions, 6897 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:56:17,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 537 transitions, 8075 flow [2024-06-20 15:56:20,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 537 transitions, 7916 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-20 15:56:20,986 INFO L231 Difference]: Finished difference. Result has 529 places, 522 transitions, 6922 flow [2024-06-20 15:56:20,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6738, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6922, PETRI_PLACES=529, PETRI_TRANSITIONS=522} [2024-06-20 15:56:20,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 498 predicate places. [2024-06-20 15:56:20,986 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 522 transitions, 6922 flow [2024-06-20 15:56:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:20,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:20,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:20,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-20 15:56:20,987 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)] === [2024-06-20 15:56:20,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1687739636, now seen corresponding path program 7 times [2024-06-20 15:56:20,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485139633] [2024-06-20 15:56:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485139633] [2024-06-20 15:56:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485139633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:22,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:22,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:56:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910777316] [2024-06-20 15:56:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:56:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:56:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:56:22,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:22,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 522 transitions, 6922 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:22,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:22,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:22,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:23,290 INFO L124 PetriNetUnfolderBase]: 1052/1997 cut-off events. [2024-06-20 15:56:23,290 INFO L125 PetriNetUnfolderBase]: For 622483/622483 co-relation queries the response was YES. [2024-06-20 15:56:23,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19115 conditions, 1997 events. 1052/1997 cut-off events. For 622483/622483 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12787 event pairs, 78 based on Foata normal form. 2/1997 useless extension candidates. Maximal degree in co-relation 18879. Up to 1672 conditions per place. [2024-06-20 15:56:23,318 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 465 selfloop transitions, 68 changer transitions 0/536 dead transitions. [2024-06-20 15:56:23,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 536 transitions, 8058 flow [2024-06-20 15:56:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:56:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:56:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:56:23,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-20 15:56:23,319 INFO L175 Difference]: Start difference. First operand has 529 places, 522 transitions, 6922 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:56:23,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 536 transitions, 8058 flow [2024-06-20 15:56:25,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 536 transitions, 7884 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-20 15:56:25,879 INFO L231 Difference]: Finished difference. Result has 531 places, 523 transitions, 6930 flow [2024-06-20 15:56:25,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6748, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6930, PETRI_PLACES=531, PETRI_TRANSITIONS=523} [2024-06-20 15:56:25,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-20 15:56:25,880 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 523 transitions, 6930 flow [2024-06-20 15:56:25,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:25,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:25,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:25,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-20 15:56:25,880 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)] === [2024-06-20 15:56:25,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:25,881 INFO L85 PathProgramCache]: Analyzing trace with hash 234498285, now seen corresponding path program 8 times [2024-06-20 15:56:25,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:25,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851507810] [2024-06-20 15:56:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:27,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851507810] [2024-06-20 15:56:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851507810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:27,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:27,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:56:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026721428] [2024-06-20 15:56:27,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:27,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:56:27,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:56:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:56:27,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:27,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 523 transitions, 6930 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:27,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:27,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:27,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:28,461 INFO L124 PetriNetUnfolderBase]: 1060/2010 cut-off events. [2024-06-20 15:56:28,461 INFO L125 PetriNetUnfolderBase]: For 628393/628393 co-relation queries the response was YES. [2024-06-20 15:56:28,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19449 conditions, 2010 events. 1060/2010 cut-off events. For 628393/628393 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12863 event pairs, 78 based on Foata normal form. 1/2009 useless extension candidates. Maximal degree in co-relation 19212. Up to 1387 conditions per place. [2024-06-20 15:56:28,495 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 336 selfloop transitions, 206 changer transitions 0/545 dead transitions. [2024-06-20 15:56:28,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 545 transitions, 8920 flow [2024-06-20 15:56:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-20 15:56:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-20 15:56:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 185 transitions. [2024-06-20 15:56:28,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-20 15:56:28,497 INFO L175 Difference]: Start difference. First operand has 531 places, 523 transitions, 6930 flow. Second operand 15 states and 185 transitions. [2024-06-20 15:56:28,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 545 transitions, 8920 flow [2024-06-20 15:56:31,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 545 transitions, 8748 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-20 15:56:31,178 INFO L231 Difference]: Finished difference. Result has 537 places, 527 transitions, 7329 flow [2024-06-20 15:56:31,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6758, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7329, PETRI_PLACES=537, PETRI_TRANSITIONS=527} [2024-06-20 15:56:31,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 506 predicate places. [2024-06-20 15:56:31,179 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 527 transitions, 7329 flow [2024-06-20 15:56:31,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:31,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:31,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-20 15:56:31,179 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)] === [2024-06-20 15:56:31,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1493800226, now seen corresponding path program 8 times [2024-06-20 15:56:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096374474] [2024-06-20 15:56:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:32,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:32,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096374474] [2024-06-20 15:56:32,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096374474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:56:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692758334] [2024-06-20 15:56:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:32,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:56:32,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:56:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:56:32,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:32,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 527 transitions, 7329 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:32,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:32,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:32,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:33,617 INFO L124 PetriNetUnfolderBase]: 1080/2054 cut-off events. [2024-06-20 15:56:33,618 INFO L125 PetriNetUnfolderBase]: For 808066/808066 co-relation queries the response was YES. [2024-06-20 15:56:33,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20100 conditions, 2054 events. 1080/2054 cut-off events. For 808066/808066 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13186 event pairs, 82 based on Foata normal form. 12/2064 useless extension candidates. Maximal degree in co-relation 19862. Up to 1732 conditions per place. [2024-06-20 15:56:33,653 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 479 selfloop transitions, 55 changer transitions 9/546 dead transitions. [2024-06-20 15:56:33,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 546 transitions, 8609 flow [2024-06-20 15:56:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:56:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:56:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:56:33,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 15:56:33,654 INFO L175 Difference]: Start difference. First operand has 537 places, 527 transitions, 7329 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:56:33,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 546 transitions, 8609 flow [2024-06-20 15:56:36,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 546 transitions, 8100 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-06-20 15:56:36,705 INFO L231 Difference]: Finished difference. Result has 537 places, 523 transitions, 6886 flow [2024-06-20 15:56:36,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6820, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6886, PETRI_PLACES=537, PETRI_TRANSITIONS=523} [2024-06-20 15:56:36,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 506 predicate places. [2024-06-20 15:56:36,705 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 523 transitions, 6886 flow [2024-06-20 15:56:36,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:36,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:36,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:36,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-20 15:56:36,706 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)] === [2024-06-20 15:56:36,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1493590697, now seen corresponding path program 9 times [2024-06-20 15:56:36,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555272502] [2024-06-20 15:56:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:38,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:38,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555272502] [2024-06-20 15:56:38,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555272502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:38,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:38,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:56:38,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121660094] [2024-06-20 15:56:38,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:56:38,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:56:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:56:38,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:38,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 523 transitions, 6886 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:38,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:38,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:38,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:39,605 INFO L124 PetriNetUnfolderBase]: 1054/2006 cut-off events. [2024-06-20 15:56:39,605 INFO L125 PetriNetUnfolderBase]: For 641665/641665 co-relation queries the response was YES. [2024-06-20 15:56:39,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19276 conditions, 2006 events. 1054/2006 cut-off events. For 641665/641665 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 12874 event pairs, 82 based on Foata normal form. 1/2005 useless extension candidates. Maximal degree in co-relation 19038. Up to 1683 conditions per place. [2024-06-20 15:56:39,640 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 464 selfloop transitions, 74 changer transitions 0/541 dead transitions. [2024-06-20 15:56:39,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 541 transitions, 8800 flow [2024-06-20 15:56:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:56:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:56:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 15:56:39,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 15:56:39,641 INFO L175 Difference]: Start difference. First operand has 537 places, 523 transitions, 6886 flow. Second operand 12 states and 152 transitions. [2024-06-20 15:56:39,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 541 transitions, 8800 flow [2024-06-20 15:56:42,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 541 transitions, 8643 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-20 15:56:42,397 INFO L231 Difference]: Finished difference. Result has 539 places, 525 transitions, 6961 flow [2024-06-20 15:56:42,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6729, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6961, PETRI_PLACES=539, PETRI_TRANSITIONS=525} [2024-06-20 15:56:42,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 508 predicate places. [2024-06-20 15:56:42,398 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 525 transitions, 6961 flow [2024-06-20 15:56:42,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:42,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:42,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:42,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-20 15:56:42,399 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)] === [2024-06-20 15:56:42,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2060809761, now seen corresponding path program 10 times [2024-06-20 15:56:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115391995] [2024-06-20 15:56:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:42,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:43,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:43,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115391995] [2024-06-20 15:56:43,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115391995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:43,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:43,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:56:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955403134] [2024-06-20 15:56:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:56:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:56:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:56:44,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:44,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 525 transitions, 6961 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:44,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:44,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:44,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:44,862 INFO L124 PetriNetUnfolderBase]: 1057/2011 cut-off events. [2024-06-20 15:56:44,863 INFO L125 PetriNetUnfolderBase]: For 648707/648707 co-relation queries the response was YES. [2024-06-20 15:56:44,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19359 conditions, 2011 events. 1057/2011 cut-off events. For 648707/648707 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12941 event pairs, 78 based on Foata normal form. 1/2010 useless extension candidates. Maximal degree in co-relation 19120. Up to 1676 conditions per place. [2024-06-20 15:56:44,892 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 450 selfloop transitions, 87 changer transitions 0/540 dead transitions. [2024-06-20 15:56:44,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 540 transitions, 8143 flow [2024-06-20 15:56:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:56:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:56:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:56:44,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 15:56:44,896 INFO L175 Difference]: Start difference. First operand has 539 places, 525 transitions, 6961 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:56:44,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 540 transitions, 8143 flow [2024-06-20 15:56:47,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 540 transitions, 7931 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-20 15:56:47,563 INFO L231 Difference]: Finished difference. Result has 541 places, 527 transitions, 7011 flow [2024-06-20 15:56:47,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6749, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7011, PETRI_PLACES=541, PETRI_TRANSITIONS=527} [2024-06-20 15:56:47,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 510 predicate places. [2024-06-20 15:56:47,564 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 527 transitions, 7011 flow [2024-06-20 15:56:47,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:47,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:47,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:47,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-20 15:56:47,564 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)] === [2024-06-20 15:56:47,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash 234498564, now seen corresponding path program 9 times [2024-06-20 15:56:47,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:47,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253498691] [2024-06-20 15:56:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:47,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:49,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253498691] [2024-06-20 15:56:49,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253498691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:49,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:49,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:56:49,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958831834] [2024-06-20 15:56:49,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:49,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:56:49,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:56:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:56:49,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:49,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 527 transitions, 7011 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:49,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:49,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:49,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:49,985 INFO L124 PetriNetUnfolderBase]: 1067/2029 cut-off events. [2024-06-20 15:56:49,985 INFO L125 PetriNetUnfolderBase]: For 672685/672685 co-relation queries the response was YES. [2024-06-20 15:56:50,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19522 conditions, 2029 events. 1067/2029 cut-off events. For 672685/672685 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13053 event pairs, 78 based on Foata normal form. 2/2029 useless extension candidates. Maximal degree in co-relation 19282. Up to 1583 conditions per place. [2024-06-20 15:56:50,022 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 412 selfloop transitions, 131 changer transitions 0/546 dead transitions. [2024-06-20 15:56:50,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 546 transitions, 8213 flow [2024-06-20 15:56:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:56:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:56:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:56:50,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 15:56:50,023 INFO L175 Difference]: Start difference. First operand has 541 places, 527 transitions, 7011 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:56:50,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 546 transitions, 8213 flow [2024-06-20 15:56:52,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 546 transitions, 7979 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-20 15:56:53,003 INFO L231 Difference]: Finished difference. Result has 545 places, 532 transitions, 7134 flow [2024-06-20 15:56:53,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6777, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7134, PETRI_PLACES=545, PETRI_TRANSITIONS=532} [2024-06-20 15:56:53,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 514 predicate places. [2024-06-20 15:56:53,003 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 532 transitions, 7134 flow [2024-06-20 15:56:53,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:53,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:53,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:53,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-20 15:56:53,004 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)] === [2024-06-20 15:56:53,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1493792507, now seen corresponding path program 11 times [2024-06-20 15:56:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:53,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396378784] [2024-06-20 15:56:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:53,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396378784] [2024-06-20 15:56:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396378784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:54,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:54,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:56:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161670963] [2024-06-20 15:56:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:54,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:56:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:56:54,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:56:55,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:56:55,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 532 transitions, 7134 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:55,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:55,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:56:55,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:55,911 INFO L124 PetriNetUnfolderBase]: 1065/2024 cut-off events. [2024-06-20 15:56:55,911 INFO L125 PetriNetUnfolderBase]: For 645684/645684 co-relation queries the response was YES. [2024-06-20 15:56:55,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19393 conditions, 2024 events. 1065/2024 cut-off events. For 645684/645684 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13011 event pairs, 78 based on Foata normal form. 1/2023 useless extension candidates. Maximal degree in co-relation 19151. Up to 1745 conditions per place. [2024-06-20 15:56:55,946 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 477 selfloop transitions, 65 changer transitions 0/545 dead transitions. [2024-06-20 15:56:55,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 545 transitions, 8248 flow [2024-06-20 15:56:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:56:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:56:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:56:55,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-20 15:56:55,948 INFO L175 Difference]: Start difference. First operand has 545 places, 532 transitions, 7134 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:56:55,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 545 transitions, 8248 flow [2024-06-20 15:56:58,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 545 transitions, 7861 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-20 15:56:58,677 INFO L231 Difference]: Finished difference. Result has 547 places, 532 transitions, 6883 flow [2024-06-20 15:56:58,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6747, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6883, PETRI_PLACES=547, PETRI_TRANSITIONS=532} [2024-06-20 15:56:58,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 516 predicate places. [2024-06-20 15:56:58,677 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 532 transitions, 6883 flow [2024-06-20 15:56:58,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:58,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:58,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:58,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-20 15:56:58,678 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)] === [2024-06-20 15:56:58,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash -24056595, now seen corresponding path program 12 times [2024-06-20 15:56:58,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:58,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076297780] [2024-06-20 15:56:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:58,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076297780] [2024-06-20 15:57:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076297780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:00,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:57:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814931001] [2024-06-20 15:57:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:57:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:57:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:57:00,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:00,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 532 transitions, 6883 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:00,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:00,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:00,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:01,419 INFO L124 PetriNetUnfolderBase]: 1068/2033 cut-off events. [2024-06-20 15:57:01,420 INFO L125 PetriNetUnfolderBase]: For 651552/651552 co-relation queries the response was YES. [2024-06-20 15:57:01,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19212 conditions, 2033 events. 1068/2033 cut-off events. For 651552/651552 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13068 event pairs, 82 based on Foata normal form. 1/2032 useless extension candidates. Maximal degree in co-relation 18972. Up to 1537 conditions per place. [2024-06-20 15:57:01,523 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 410 selfloop transitions, 135 changer transitions 0/548 dead transitions. [2024-06-20 15:57:01,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 548 transitions, 8087 flow [2024-06-20 15:57:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:57:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:57:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-20 15:57:01,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-20 15:57:01,524 INFO L175 Difference]: Start difference. First operand has 547 places, 532 transitions, 6883 flow. Second operand 12 states and 153 transitions. [2024-06-20 15:57:01,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 548 transitions, 8087 flow [2024-06-20 15:57:04,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 548 transitions, 7941 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:57:04,633 INFO L231 Difference]: Finished difference. Result has 548 places, 534 transitions, 7094 flow [2024-06-20 15:57:04,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6737, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7094, PETRI_PLACES=548, PETRI_TRANSITIONS=534} [2024-06-20 15:57:04,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 517 predicate places. [2024-06-20 15:57:04,634 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 534 transitions, 7094 flow [2024-06-20 15:57:04,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:04,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:04,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:04,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-20 15:57:04,634 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)] === [2024-06-20 15:57:04,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:04,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1694889476, now seen corresponding path program 10 times [2024-06-20 15:57:04,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:04,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979801086] [2024-06-20 15:57:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:04,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:05,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979801086] [2024-06-20 15:57:05,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979801086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:05,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:05,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:57:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637772987] [2024-06-20 15:57:05,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:05,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:57:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:05,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:57:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:57:06,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:06,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 534 transitions, 7094 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:06,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:06,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:06,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:06,867 INFO L124 PetriNetUnfolderBase]: 1072/2041 cut-off events. [2024-06-20 15:57:06,867 INFO L125 PetriNetUnfolderBase]: For 676927/676927 co-relation queries the response was YES. [2024-06-20 15:57:06,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19492 conditions, 2041 events. 1072/2041 cut-off events. For 676927/676927 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 13168 event pairs, 80 based on Foata normal form. 2/2041 useless extension candidates. Maximal degree in co-relation 19251. Up to 1723 conditions per place. [2024-06-20 15:57:06,902 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 477 selfloop transitions, 68 changer transitions 0/548 dead transitions. [2024-06-20 15:57:06,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 548 transitions, 8260 flow [2024-06-20 15:57:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:57:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:57:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:57:06,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 15:57:06,904 INFO L175 Difference]: Start difference. First operand has 548 places, 534 transitions, 7094 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:57:06,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 548 transitions, 8260 flow [2024-06-20 15:57:09,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 548 transitions, 7929 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-20 15:57:09,839 INFO L231 Difference]: Finished difference. Result has 549 places, 535 transitions, 6951 flow [2024-06-20 15:57:09,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6763, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6951, PETRI_PLACES=549, PETRI_TRANSITIONS=535} [2024-06-20 15:57:09,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 518 predicate places. [2024-06-20 15:57:09,840 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 535 transitions, 6951 flow [2024-06-20 15:57:09,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:09,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:09,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-20 15:57:09,840 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)] === [2024-06-20 15:57:09,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 234824994, now seen corresponding path program 11 times [2024-06-20 15:57:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945251808] [2024-06-20 15:57:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:09,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:10,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945251808] [2024-06-20 15:57:10,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945251808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:10,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:10,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:57:10,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283850259] [2024-06-20 15:57:10,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:10,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:57:11,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:57:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:57:11,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:11,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 535 transitions, 6951 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:11,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:11,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:11,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:11,900 INFO L124 PetriNetUnfolderBase]: 1105/2108 cut-off events. [2024-06-20 15:57:11,900 INFO L125 PetriNetUnfolderBase]: For 858328/858328 co-relation queries the response was YES. [2024-06-20 15:57:11,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21788 conditions, 2108 events. 1105/2108 cut-off events. For 858328/858328 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13650 event pairs, 95 based on Foata normal form. 2/2108 useless extension candidates. Maximal degree in co-relation 21546. Up to 1396 conditions per place. [2024-06-20 15:57:11,940 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 399 selfloop transitions, 156 changer transitions 0/558 dead transitions. [2024-06-20 15:57:11,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 558 transitions, 8651 flow [2024-06-20 15:57:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:57:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:57:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-20 15:57:11,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-20 15:57:11,941 INFO L175 Difference]: Start difference. First operand has 549 places, 535 transitions, 6951 flow. Second operand 12 states and 159 transitions. [2024-06-20 15:57:11,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 558 transitions, 8651 flow [2024-06-20 15:57:15,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 558 transitions, 8473 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-20 15:57:15,867 INFO L231 Difference]: Finished difference. Result has 552 places, 537 transitions, 7187 flow [2024-06-20 15:57:15,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6773, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7187, PETRI_PLACES=552, PETRI_TRANSITIONS=537} [2024-06-20 15:57:15,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 521 predicate places. [2024-06-20 15:57:15,868 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 537 transitions, 7187 flow [2024-06-20 15:57:15,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:15,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:15,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:15,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-20 15:57:15,868 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)] === [2024-06-20 15:57:15,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:15,869 INFO L85 PathProgramCache]: Analyzing trace with hash 234507864, now seen corresponding path program 12 times [2024-06-20 15:57:15,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:15,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065676348] [2024-06-20 15:57:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:15,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:17,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:17,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065676348] [2024-06-20 15:57:17,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065676348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:17,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:17,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:57:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545802482] [2024-06-20 15:57:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:17,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:57:17,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:17,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:57:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:57:17,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:17,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 537 transitions, 7187 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:17,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:17,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:17,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:18,097 INFO L124 PetriNetUnfolderBase]: 1116/2127 cut-off events. [2024-06-20 15:57:18,098 INFO L125 PetriNetUnfolderBase]: For 898536/898536 co-relation queries the response was YES. [2024-06-20 15:57:18,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22628 conditions, 2127 events. 1116/2127 cut-off events. For 898536/898536 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13820 event pairs, 94 based on Foata normal form. 2/2127 useless extension candidates. Maximal degree in co-relation 22385. Up to 1656 conditions per place. [2024-06-20 15:57:18,206 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 436 selfloop transitions, 115 changer transitions 0/554 dead transitions. [2024-06-20 15:57:18,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 554 transitions, 8797 flow [2024-06-20 15:57:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:57:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:57:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:57:18,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-20 15:57:18,208 INFO L175 Difference]: Start difference. First operand has 552 places, 537 transitions, 7187 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:57:18,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 554 transitions, 8797 flow [2024-06-20 15:57:22,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 554 transitions, 8586 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 15:57:22,419 INFO L231 Difference]: Finished difference. Result has 556 places, 539 transitions, 7312 flow [2024-06-20 15:57:22,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6976, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7312, PETRI_PLACES=556, PETRI_TRANSITIONS=539} [2024-06-20 15:57:22,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 525 predicate places. [2024-06-20 15:57:22,420 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 539 transitions, 7312 flow [2024-06-20 15:57:22,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:22,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:22,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-20 15:57:22,420 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)] === [2024-06-20 15:57:22,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 225561264, now seen corresponding path program 13 times [2024-06-20 15:57:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:22,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585851741] [2024-06-20 15:57:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:23,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:23,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585851741] [2024-06-20 15:57:23,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585851741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:23,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:23,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:57:23,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993995304] [2024-06-20 15:57:23,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:23,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:57:23,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:23,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:57:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:57:23,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:23,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 539 transitions, 7312 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:23,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:23,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:23,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:24,330 INFO L124 PetriNetUnfolderBase]: 1113/2124 cut-off events. [2024-06-20 15:57:24,330 INFO L125 PetriNetUnfolderBase]: For 872090/872090 co-relation queries the response was YES. [2024-06-20 15:57:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22308 conditions, 2124 events. 1113/2124 cut-off events. For 872090/872090 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13825 event pairs, 95 based on Foata normal form. 2/2124 useless extension candidates. Maximal degree in co-relation 22063. Up to 1670 conditions per place. [2024-06-20 15:57:24,368 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 433 selfloop transitions, 116 changer transitions 0/552 dead transitions. [2024-06-20 15:57:24,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 552 transitions, 8440 flow [2024-06-20 15:57:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:57:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:57:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:57:24,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-20 15:57:24,369 INFO L175 Difference]: Start difference. First operand has 556 places, 539 transitions, 7312 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:57:24,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 552 transitions, 8440 flow [2024-06-20 15:57:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 552 transitions, 8193 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-20 15:57:28,391 INFO L231 Difference]: Finished difference. Result has 560 places, 539 transitions, 7303 flow [2024-06-20 15:57:28,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7065, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7303, PETRI_PLACES=560, PETRI_TRANSITIONS=539} [2024-06-20 15:57:28,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 529 predicate places. [2024-06-20 15:57:28,392 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 539 transitions, 7303 flow [2024-06-20 15:57:28,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:28,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:28,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:28,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-20 15:57:28,393 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)] === [2024-06-20 15:57:28,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:28,393 INFO L85 PathProgramCache]: Analyzing trace with hash -23789406, now seen corresponding path program 14 times [2024-06-20 15:57:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:28,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126465512] [2024-06-20 15:57:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:29,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126465512] [2024-06-20 15:57:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126465512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:29,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:29,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:57:29,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330087347] [2024-06-20 15:57:29,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:29,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:57:29,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:29,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:57:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:57:29,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:29,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 539 transitions, 7303 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:29,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:29,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:29,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:30,324 INFO L124 PetriNetUnfolderBase]: 1117/2132 cut-off events. [2024-06-20 15:57:30,325 INFO L125 PetriNetUnfolderBase]: For 880017/880017 co-relation queries the response was YES. [2024-06-20 15:57:30,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22458 conditions, 2132 events. 1117/2132 cut-off events. For 880017/880017 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13914 event pairs, 97 based on Foata normal form. 2/2132 useless extension candidates. Maximal degree in co-relation 22211. Up to 1684 conditions per place. [2024-06-20 15:57:30,362 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 448 selfloop transitions, 102 changer transitions 0/553 dead transitions. [2024-06-20 15:57:30,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 553 transitions, 8485 flow [2024-06-20 15:57:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:57:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:57:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:57:30,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-20 15:57:30,363 INFO L175 Difference]: Start difference. First operand has 560 places, 539 transitions, 7303 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:57:30,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 553 transitions, 8485 flow [2024-06-20 15:57:33,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 553 transitions, 8250 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-20 15:57:33,762 INFO L231 Difference]: Finished difference. Result has 561 places, 540 transitions, 7330 flow [2024-06-20 15:57:33,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7330, PETRI_PLACES=561, PETRI_TRANSITIONS=540} [2024-06-20 15:57:33,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-20 15:57:33,762 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 540 transitions, 7330 flow [2024-06-20 15:57:33,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:33,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:33,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:33,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-20 15:57:33,763 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)] === [2024-06-20 15:57:33,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash -23789685, now seen corresponding path program 13 times [2024-06-20 15:57:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:33,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555767559] [2024-06-20 15:57:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555767559] [2024-06-20 15:57:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555767559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:35,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:57:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545700852] [2024-06-20 15:57:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:35,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:57:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:57:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:57:35,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:35,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 540 transitions, 7330 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:35,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:35,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:35,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:36,556 INFO L124 PetriNetUnfolderBase]: 1123/2144 cut-off events. [2024-06-20 15:57:36,557 INFO L125 PetriNetUnfolderBase]: For 871924/871924 co-relation queries the response was YES. [2024-06-20 15:57:36,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22604 conditions, 2144 events. 1123/2144 cut-off events. For 871924/871924 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 13995 event pairs, 101 based on Foata normal form. 1/2143 useless extension candidates. Maximal degree in co-relation 22356. Up to 1619 conditions per place. [2024-06-20 15:57:36,594 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 411 selfloop transitions, 145 changer transitions 0/559 dead transitions. [2024-06-20 15:57:36,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 559 transitions, 8966 flow [2024-06-20 15:57:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:57:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:57:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-20 15:57:36,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:57:36,595 INFO L175 Difference]: Start difference. First operand has 561 places, 540 transitions, 7330 flow. Second operand 12 states and 156 transitions. [2024-06-20 15:57:36,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 559 transitions, 8966 flow [2024-06-20 15:57:41,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 559 transitions, 8713 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-20 15:57:41,247 INFO L231 Difference]: Finished difference. Result has 565 places, 544 transitions, 7483 flow [2024-06-20 15:57:41,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7080, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7483, PETRI_PLACES=565, PETRI_TRANSITIONS=544} [2024-06-20 15:57:41,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 534 predicate places. [2024-06-20 15:57:41,248 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 544 transitions, 7483 flow [2024-06-20 15:57:41,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:41,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:41,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:41,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-20 15:57:41,248 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)] === [2024-06-20 15:57:41,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1493799947, now seen corresponding path program 14 times [2024-06-20 15:57:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:41,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917117865] [2024-06-20 15:57:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:41,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:42,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:42,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917117865] [2024-06-20 15:57:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917117865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:42,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:42,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:57:42,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239506360] [2024-06-20 15:57:42,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:42,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:57:42,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:42,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:57:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:57:42,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:42,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 544 transitions, 7483 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:42,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:42,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:42,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:43,527 INFO L124 PetriNetUnfolderBase]: 1121/2141 cut-off events. [2024-06-20 15:57:43,528 INFO L125 PetriNetUnfolderBase]: For 861993/861993 co-relation queries the response was YES. [2024-06-20 15:57:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22419 conditions, 2141 events. 1121/2141 cut-off events. For 861993/861993 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 13982 event pairs, 97 based on Foata normal form. 1/2140 useless extension candidates. Maximal degree in co-relation 22169. Up to 1843 conditions per place. [2024-06-20 15:57:43,567 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 486 selfloop transitions, 67 changer transitions 0/556 dead transitions. [2024-06-20 15:57:43,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 556 transitions, 8617 flow [2024-06-20 15:57:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:57:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:57:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:57:43,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-20 15:57:43,568 INFO L175 Difference]: Start difference. First operand has 565 places, 544 transitions, 7483 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:57:43,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 556 transitions, 8617 flow [2024-06-20 15:57:47,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 556 transitions, 8231 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-20 15:57:47,999 INFO L231 Difference]: Finished difference. Result has 568 places, 544 transitions, 7241 flow [2024-06-20 15:57:48,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7097, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7241, PETRI_PLACES=568, PETRI_TRANSITIONS=544} [2024-06-20 15:57:48,000 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 537 predicate places. [2024-06-20 15:57:48,000 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 544 transitions, 7241 flow [2024-06-20 15:57:48,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:48,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:48,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-20 15:57:48,001 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)] === [2024-06-20 15:57:48,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:48,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1694889197, now seen corresponding path program 15 times [2024-06-20 15:57:48,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:48,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474901572] [2024-06-20 15:57:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:48,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474901572] [2024-06-20 15:57:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474901572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:49,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:57:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406872788] [2024-06-20 15:57:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:57:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:57:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:57:49,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:49,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 544 transitions, 7241 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:49,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:49,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:49,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:50,494 INFO L124 PetriNetUnfolderBase]: 1132/2161 cut-off events. [2024-06-20 15:57:50,494 INFO L125 PetriNetUnfolderBase]: For 888998/888998 co-relation queries the response was YES. [2024-06-20 15:57:50,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22654 conditions, 2161 events. 1132/2161 cut-off events. For 888998/888998 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 14126 event pairs, 97 based on Foata normal form. 1/2160 useless extension candidates. Maximal degree in co-relation 22403. Up to 1811 conditions per place. [2024-06-20 15:57:50,532 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 466 selfloop transitions, 95 changer transitions 0/564 dead transitions. [2024-06-20 15:57:50,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 564 transitions, 8964 flow [2024-06-20 15:57:50,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:57:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:57:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 15:57:50,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 15:57:50,534 INFO L175 Difference]: Start difference. First operand has 568 places, 544 transitions, 7241 flow. Second operand 12 states and 152 transitions. [2024-06-20 15:57:50,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 564 transitions, 8964 flow [2024-06-20 15:57:54,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 564 transitions, 8812 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:57:54,453 INFO L231 Difference]: Finished difference. Result has 570 places, 550 transitions, 7487 flow [2024-06-20 15:57:54,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7091, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7487, PETRI_PLACES=570, PETRI_TRANSITIONS=550} [2024-06-20 15:57:54,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 539 predicate places. [2024-06-20 15:57:54,453 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 550 transitions, 7487 flow [2024-06-20 15:57:54,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:54,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:54,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:54,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-20 15:57:54,454 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)] === [2024-06-20 15:57:54,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash 225294075, now seen corresponding path program 16 times [2024-06-20 15:57:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:54,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33656526] [2024-06-20 15:57:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:56,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33656526] [2024-06-20 15:57:56,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33656526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:56,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:57:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199543972] [2024-06-20 15:57:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:57:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:57:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:57:56,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:57:56,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 550 transitions, 7487 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:56,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:56,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:57:56,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:57,339 INFO L124 PetriNetUnfolderBase]: 1130/2158 cut-off events. [2024-06-20 15:57:57,339 INFO L125 PetriNetUnfolderBase]: For 870758/870758 co-relation queries the response was YES. [2024-06-20 15:57:57,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 2158 events. 1130/2158 cut-off events. For 870758/870758 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 14114 event pairs, 101 based on Foata normal form. 1/2157 useless extension candidates. Maximal degree in co-relation 22222. Up to 1658 conditions per place. [2024-06-20 15:57:57,373 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 405 selfloop transitions, 156 changer transitions 0/564 dead transitions. [2024-06-20 15:57:57,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 564 transitions, 8645 flow [2024-06-20 15:57:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:57:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:57:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:57:57,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:57:57,375 INFO L175 Difference]: Start difference. First operand has 570 places, 550 transitions, 7487 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:57:57,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 564 transitions, 8645 flow [2024-06-20 15:58:01,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 564 transitions, 8403 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-20 15:58:01,130 INFO L231 Difference]: Finished difference. Result has 574 places, 550 transitions, 7562 flow [2024-06-20 15:58:01,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7562, PETRI_PLACES=574, PETRI_TRANSITIONS=550} [2024-06-20 15:58:01,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 543 predicate places. [2024-06-20 15:58:01,131 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 550 transitions, 7562 flow [2024-06-20 15:58:01,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:01,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:01,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:01,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-20 15:58:01,131 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)] === [2024-06-20 15:58:01,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1694881757, now seen corresponding path program 17 times [2024-06-20 15:58:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:01,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802558627] [2024-06-20 15:58:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:01,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802558627] [2024-06-20 15:58:02,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802558627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:02,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:02,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:58:02,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825263098] [2024-06-20 15:58:02,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:02,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:58:02,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:58:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:58:02,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:02,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 550 transitions, 7562 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:02,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:02,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:02,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:03,271 INFO L124 PetriNetUnfolderBase]: 1126/2152 cut-off events. [2024-06-20 15:58:03,271 INFO L125 PetriNetUnfolderBase]: For 859919/859919 co-relation queries the response was YES. [2024-06-20 15:58:03,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22185 conditions, 2152 events. 1126/2152 cut-off events. For 859919/859919 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 14089 event pairs, 97 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 21931. Up to 1755 conditions per place. [2024-06-20 15:58:03,312 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 461 selfloop transitions, 99 changer transitions 0/563 dead transitions. [2024-06-20 15:58:03,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 563 transitions, 9098 flow [2024-06-20 15:58:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:58:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:58:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 15:58:03,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:58:03,317 INFO L175 Difference]: Start difference. First operand has 574 places, 550 transitions, 7562 flow. Second operand 11 states and 143 transitions. [2024-06-20 15:58:03,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 563 transitions, 9098 flow [2024-06-20 15:58:07,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 563 transitions, 8669 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-20 15:58:07,578 INFO L231 Difference]: Finished difference. Result has 575 places, 550 transitions, 7345 flow [2024-06-20 15:58:07,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7133, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7345, PETRI_PLACES=575, PETRI_TRANSITIONS=550} [2024-06-20 15:58:07,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-20 15:58:07,579 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 550 transitions, 7345 flow [2024-06-20 15:58:07,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:07,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:07,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:07,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-20 15:58:07,579 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)] === [2024-06-20 15:58:07,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash 528701995, now seen corresponding path program 18 times [2024-06-20 15:58:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:07,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739624277] [2024-06-20 15:58:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:07,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:08,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:08,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739624277] [2024-06-20 15:58:08,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739624277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:08,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:08,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689951003] [2024-06-20 15:58:08,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:08,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:08,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:08,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:09,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:09,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 550 transitions, 7345 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:09,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:09,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:09,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:10,048 INFO L124 PetriNetUnfolderBase]: 1129/2159 cut-off events. [2024-06-20 15:58:10,049 INFO L125 PetriNetUnfolderBase]: For 849110/849110 co-relation queries the response was YES. [2024-06-20 15:58:10,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22088 conditions, 2159 events. 1129/2159 cut-off events. For 849110/849110 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 14176 event pairs, 101 based on Foata normal form. 1/2158 useless extension candidates. Maximal degree in co-relation 21833. Up to 1651 conditions per place. [2024-06-20 15:58:10,090 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 425 selfloop transitions, 138 changer transitions 0/566 dead transitions. [2024-06-20 15:58:10,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 566 transitions, 8581 flow [2024-06-20 15:58:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:58:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:58:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-20 15:58:10,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-20 15:58:10,092 INFO L175 Difference]: Start difference. First operand has 575 places, 550 transitions, 7345 flow. Second operand 12 states and 155 transitions. [2024-06-20 15:58:10,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 566 transitions, 8581 flow [2024-06-20 15:58:14,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 566 transitions, 8348 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-20 15:58:14,194 INFO L231 Difference]: Finished difference. Result has 574 places, 552 transitions, 7471 flow [2024-06-20 15:58:14,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7112, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7471, PETRI_PLACES=574, PETRI_TRANSITIONS=552} [2024-06-20 15:58:14,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 543 predicate places. [2024-06-20 15:58:14,195 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 552 transitions, 7471 flow [2024-06-20 15:58:14,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:14,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:14,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:14,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-20 15:58:14,195 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)] === [2024-06-20 15:58:14,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1687530107, now seen corresponding path program 19 times [2024-06-20 15:58:14,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:14,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600103015] [2024-06-20 15:58:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:14,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:15,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:15,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600103015] [2024-06-20 15:58:15,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600103015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:15,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:15,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:15,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792910060] [2024-06-20 15:58:15,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:15,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:15,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:15,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:15,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:16,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:16,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 552 transitions, 7471 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:16,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:16,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:16,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:16,963 INFO L124 PetriNetUnfolderBase]: 1127/2156 cut-off events. [2024-06-20 15:58:16,963 INFO L125 PetriNetUnfolderBase]: For 813782/813782 co-relation queries the response was YES. [2024-06-20 15:58:16,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21828 conditions, 2156 events. 1127/2156 cut-off events. For 813782/813782 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 14132 event pairs, 97 based on Foata normal form. 1/2155 useless extension candidates. Maximal degree in co-relation 21575. Up to 1813 conditions per place. [2024-06-20 15:58:17,002 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 474 selfloop transitions, 88 changer transitions 0/565 dead transitions. [2024-06-20 15:58:17,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 565 transitions, 8625 flow [2024-06-20 15:58:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:58:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:58:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:58:17,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:58:17,003 INFO L175 Difference]: Start difference. First operand has 574 places, 552 transitions, 7471 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:58:17,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 565 transitions, 8625 flow [2024-06-20 15:58:20,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 565 transitions, 8237 flow, removed 59 selfloop flow, removed 10 redundant places. [2024-06-20 15:58:20,492 INFO L231 Difference]: Finished difference. Result has 576 places, 552 transitions, 7265 flow [2024-06-20 15:58:20,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7083, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7265, PETRI_PLACES=576, PETRI_TRANSITIONS=552} [2024-06-20 15:58:20,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 545 predicate places. [2024-06-20 15:58:20,493 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 552 transitions, 7265 flow [2024-06-20 15:58:20,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:20,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:20,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:20,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-20 15:58:20,493 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)] === [2024-06-20 15:58:20,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash -23780106, now seen corresponding path program 15 times [2024-06-20 15:58:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:20,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580261361] [2024-06-20 15:58:20,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:20,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:21,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580261361] [2024-06-20 15:58:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580261361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:21,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581925286] [2024-06-20 15:58:21,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:22,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:22,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 552 transitions, 7265 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:22,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:22,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:22,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:22,936 INFO L124 PetriNetUnfolderBase]: 1138/2177 cut-off events. [2024-06-20 15:58:22,936 INFO L125 PetriNetUnfolderBase]: For 878584/878584 co-relation queries the response was YES. [2024-06-20 15:58:22,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22347 conditions, 2177 events. 1138/2177 cut-off events. For 878584/878584 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 14305 event pairs, 98 based on Foata normal form. 2/2177 useless extension candidates. Maximal degree in co-relation 22094. Up to 1760 conditions per place. [2024-06-20 15:58:22,973 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 469 selfloop transitions, 98 changer transitions 0/570 dead transitions. [2024-06-20 15:58:22,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 570 transitions, 8929 flow [2024-06-20 15:58:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:58:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:58:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-20 15:58:22,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-20 15:58:22,975 INFO L175 Difference]: Start difference. First operand has 576 places, 552 transitions, 7265 flow. Second operand 12 states and 153 transitions. [2024-06-20 15:58:22,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 570 transitions, 8929 flow [2024-06-20 15:58:27,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 570 transitions, 8732 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 15:58:27,308 INFO L231 Difference]: Finished difference. Result has 577 places, 554 transitions, 7378 flow [2024-06-20 15:58:27,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7378, PETRI_PLACES=577, PETRI_TRANSITIONS=554} [2024-06-20 15:58:27,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 546 predicate places. [2024-06-20 15:58:27,309 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 554 transitions, 7378 flow [2024-06-20 15:58:27,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:27,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:27,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:27,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-20 15:58:27,309 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)] === [2024-06-20 15:58:27,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash -31408245, now seen corresponding path program 20 times [2024-06-20 15:58:27,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:27,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31691773] [2024-06-20 15:58:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31691773] [2024-06-20 15:58:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31691773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:29,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:29,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273724471] [2024-06-20 15:58:29,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:29,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:29,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:29,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 554 transitions, 7378 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:29,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:29,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:29,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:30,311 INFO L124 PetriNetUnfolderBase]: 1141/2182 cut-off events. [2024-06-20 15:58:30,312 INFO L125 PetriNetUnfolderBase]: For 869725/869725 co-relation queries the response was YES. [2024-06-20 15:58:30,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22507 conditions, 2182 events. 1141/2182 cut-off events. For 869725/869725 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14344 event pairs, 100 based on Foata normal form. 1/2181 useless extension candidates. Maximal degree in co-relation 22253. Up to 1718 conditions per place. [2024-06-20 15:58:30,352 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 438 selfloop transitions, 128 changer transitions 0/569 dead transitions. [2024-06-20 15:58:30,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 569 transitions, 8624 flow [2024-06-20 15:58:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:58:30,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:58:30,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:58:30,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 15:58:30,353 INFO L175 Difference]: Start difference. First operand has 577 places, 554 transitions, 7378 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:58:30,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 569 transitions, 8624 flow [2024-06-20 15:58:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 569 transitions, 8404 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-20 15:58:34,648 INFO L231 Difference]: Finished difference. Result has 582 places, 556 transitions, 7507 flow [2024-06-20 15:58:34,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7158, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7507, PETRI_PLACES=582, PETRI_TRANSITIONS=556} [2024-06-20 15:58:34,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2024-06-20 15:58:34,648 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 556 transitions, 7507 flow [2024-06-20 15:58:34,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:34,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:34,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:34,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-20 15:58:34,649 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)] === [2024-06-20 15:58:34,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:34,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2053383432, now seen corresponding path program 16 times [2024-06-20 15:58:34,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:34,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141465560] [2024-06-20 15:58:34,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:34,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:35,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:35,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141465560] [2024-06-20 15:58:35,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141465560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:35,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:35,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:35,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489241617] [2024-06-20 15:58:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:35,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:35,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:35,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:36,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:36,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 556 transitions, 7507 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:36,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:36,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:36,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:36,974 INFO L124 PetriNetUnfolderBase]: 1138/2177 cut-off events. [2024-06-20 15:58:36,974 INFO L125 PetriNetUnfolderBase]: For 858207/858207 co-relation queries the response was YES. [2024-06-20 15:58:37,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22149 conditions, 2177 events. 1138/2177 cut-off events. For 858207/858207 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14314 event pairs, 97 based on Foata normal form. 2/2177 useless extension candidates. Maximal degree in co-relation 21893. Up to 1824 conditions per place. [2024-06-20 15:58:37,014 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 496 selfloop transitions, 71 changer transitions 0/570 dead transitions. [2024-06-20 15:58:37,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 570 transitions, 8673 flow [2024-06-20 15:58:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:58:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:58:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:58:37,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 15:58:37,016 INFO L175 Difference]: Start difference. First operand has 582 places, 556 transitions, 7507 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:58:37,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 570 transitions, 8673 flow [2024-06-20 15:58:41,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 570 transitions, 8362 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-20 15:58:41,169 INFO L231 Difference]: Finished difference. Result has 584 places, 556 transitions, 7342 flow [2024-06-20 15:58:41,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7196, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7342, PETRI_PLACES=584, PETRI_TRANSITIONS=556} [2024-06-20 15:58:41,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 553 predicate places. [2024-06-20 15:58:41,169 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 556 transitions, 7342 flow [2024-06-20 15:58:41,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:41,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:41,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:41,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-20 15:58:41,170 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)] === [2024-06-20 15:58:41,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:41,170 INFO L85 PathProgramCache]: Analyzing trace with hash 521552155, now seen corresponding path program 21 times [2024-06-20 15:58:41,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:41,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190400533] [2024-06-20 15:58:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:41,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190400533] [2024-06-20 15:58:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190400533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:43,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:43,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351626189] [2024-06-20 15:58:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:43,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:43,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:43,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:43,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:43,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 556 transitions, 7342 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:43,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:43,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:43,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:44,237 INFO L124 PetriNetUnfolderBase]: 1136/2174 cut-off events. [2024-06-20 15:58:44,238 INFO L125 PetriNetUnfolderBase]: For 827595/827595 co-relation queries the response was YES. [2024-06-20 15:58:44,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21800 conditions, 2174 events. 1136/2174 cut-off events. For 827595/827595 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14311 event pairs, 99 based on Foata normal form. 1/2173 useless extension candidates. Maximal degree in co-relation 21543. Up to 1700 conditions per place. [2024-06-20 15:58:44,278 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 436 selfloop transitions, 131 changer transitions 0/570 dead transitions. [2024-06-20 15:58:44,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 570 transitions, 8900 flow [2024-06-20 15:58:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:58:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:58:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-20 15:58:44,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-20 15:58:44,279 INFO L175 Difference]: Start difference. First operand has 584 places, 556 transitions, 7342 flow. Second operand 12 states and 153 transitions. [2024-06-20 15:58:44,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 570 transitions, 8900 flow [2024-06-20 15:58:48,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 570 transitions, 8486 flow, removed 55 selfloop flow, removed 12 redundant places. [2024-06-20 15:58:48,555 INFO L231 Difference]: Finished difference. Result has 584 places, 556 transitions, 7195 flow [2024-06-20 15:58:48,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6928, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7195, PETRI_PLACES=584, PETRI_TRANSITIONS=556} [2024-06-20 15:58:48,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 553 predicate places. [2024-06-20 15:58:48,556 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 556 transitions, 7195 flow [2024-06-20 15:58:48,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:48,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:48,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-20 15:58:48,557 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)] === [2024-06-20 15:58:48,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -31198716, now seen corresponding path program 17 times [2024-06-20 15:58:48,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:48,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194002647] [2024-06-20 15:58:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:49,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:49,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194002647] [2024-06-20 15:58:49,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194002647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:49,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:49,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:49,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005854349] [2024-06-20 15:58:49,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:49,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:49,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:49,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:49,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:49,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 556 transitions, 7195 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:49,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:49,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:50,729 INFO L124 PetriNetUnfolderBase]: 1133/2169 cut-off events. [2024-06-20 15:58:50,729 INFO L125 PetriNetUnfolderBase]: For 814663/814663 co-relation queries the response was YES. [2024-06-20 15:58:50,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21011 conditions, 2169 events. 1133/2169 cut-off events. For 814663/814663 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14281 event pairs, 98 based on Foata normal form. 2/2169 useless extension candidates. Maximal degree in co-relation 20755. Up to 1713 conditions per place. [2024-06-20 15:58:50,769 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 457 selfloop transitions, 109 changer transitions 0/569 dead transitions. [2024-06-20 15:58:50,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 569 transitions, 8357 flow [2024-06-20 15:58:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:58:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:58:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 15:58:50,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 15:58:50,771 INFO L175 Difference]: Start difference. First operand has 584 places, 556 transitions, 7195 flow. Second operand 11 states and 143 transitions. [2024-06-20 15:58:50,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 569 transitions, 8357 flow [2024-06-20 15:58:55,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 569 transitions, 8008 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-20 15:58:55,144 INFO L231 Difference]: Finished difference. Result has 584 places, 556 transitions, 7068 flow [2024-06-20 15:58:55,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6846, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7068, PETRI_PLACES=584, PETRI_TRANSITIONS=556} [2024-06-20 15:58:55,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 553 predicate places. [2024-06-20 15:58:55,144 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 556 transitions, 7068 flow [2024-06-20 15:58:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:55,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:55,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:55,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-20 15:58:55,145 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)] === [2024-06-20 15:58:55,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash -31206435, now seen corresponding path program 22 times [2024-06-20 15:58:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:55,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11224854] [2024-06-20 15:58:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:56,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:56,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11224854] [2024-06-20 15:58:56,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11224854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:56,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:56,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:58:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725256178] [2024-06-20 15:58:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:56,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:58:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:58:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:58:56,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:58:56,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 556 transitions, 7068 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:56,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:56,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:58:56,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:57,821 INFO L124 PetriNetUnfolderBase]: 1131/2166 cut-off events. [2024-06-20 15:58:57,821 INFO L125 PetriNetUnfolderBase]: For 782425/782425 co-relation queries the response was YES. [2024-06-20 15:58:57,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20666 conditions, 2166 events. 1131/2166 cut-off events. For 782425/782425 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14276 event pairs, 98 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 20409. Up to 1702 conditions per place. [2024-06-20 15:58:57,861 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 440 selfloop transitions, 126 changer transitions 0/569 dead transitions. [2024-06-20 15:58:57,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 569 transitions, 8230 flow [2024-06-20 15:58:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:58:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:58:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:58:57,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 15:58:57,862 INFO L175 Difference]: Start difference. First operand has 584 places, 556 transitions, 7068 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:58:57,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 569 transitions, 8230 flow [2024-06-20 15:59:02,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 569 transitions, 7943 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-20 15:59:02,225 INFO L231 Difference]: Finished difference. Result has 586 places, 556 transitions, 7038 flow [2024-06-20 15:59:02,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7038, PETRI_PLACES=586, PETRI_TRANSITIONS=556} [2024-06-20 15:59:02,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 555 predicate places. [2024-06-20 15:59:02,226 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 556 transitions, 7038 flow [2024-06-20 15:59:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:02,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:02,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-20 15:59:02,226 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:02,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash -858139845, now seen corresponding path program 16 times [2024-06-20 15:59:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:02,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049610863] [2024-06-20 15:59:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:02,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:03,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:03,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049610863] [2024-06-20 15:59:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049610863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:03,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:03,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:59:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782344816] [2024-06-20 15:59:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:59:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:59:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:59:03,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:03,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 556 transitions, 7038 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:03,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:03,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:03,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:04,265 INFO L124 PetriNetUnfolderBase]: 1135/2174 cut-off events. [2024-06-20 15:59:04,266 INFO L125 PetriNetUnfolderBase]: For 812044/812047 co-relation queries the response was YES. [2024-06-20 15:59:04,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20822 conditions, 2174 events. 1135/2174 cut-off events. For 812044/812047 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14323 event pairs, 107 based on Foata normal form. 2/2171 useless extension candidates. Maximal degree in co-relation 20564. Up to 1887 conditions per place. [2024-06-20 15:59:04,308 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 507 selfloop transitions, 58 changer transitions 0/568 dead transitions. [2024-06-20 15:59:04,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 568 transitions, 8266 flow [2024-06-20 15:59:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:59:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:59:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:59:04,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:59:04,309 INFO L175 Difference]: Start difference. First operand has 586 places, 556 transitions, 7038 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:59:04,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 568 transitions, 8266 flow [2024-06-20 15:59:09,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 568 transitions, 8007 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 15:59:09,513 INFO L231 Difference]: Finished difference. Result has 587 places, 557 transitions, 6975 flow [2024-06-20 15:59:09,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6975, PETRI_PLACES=587, PETRI_TRANSITIONS=557} [2024-06-20 15:59:09,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 556 predicate places. [2024-06-20 15:59:09,514 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 557 transitions, 6975 flow [2024-06-20 15:59:09,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:09,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:09,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:09,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-20 15:59:09,514 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:09,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:09,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1057441635, now seen corresponding path program 17 times [2024-06-20 15:59:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:09,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605038252] [2024-06-20 15:59:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:09,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:10,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:10,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605038252] [2024-06-20 15:59:10,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605038252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:10,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:10,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:59:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373666279] [2024-06-20 15:59:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:10,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:59:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:59:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:59:10,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:10,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 557 transitions, 6975 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:10,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:10,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:10,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:11,653 INFO L124 PetriNetUnfolderBase]: 1139/2182 cut-off events. [2024-06-20 15:59:11,653 INFO L125 PetriNetUnfolderBase]: For 822253/822256 co-relation queries the response was YES. [2024-06-20 15:59:11,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20891 conditions, 2182 events. 1139/2182 cut-off events. For 822253/822256 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 14376 event pairs, 116 based on Foata normal form. 2/2179 useless extension candidates. Maximal degree in co-relation 20632. Up to 1883 conditions per place. [2024-06-20 15:59:11,690 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 510 selfloop transitions, 58 changer transitions 0/571 dead transitions. [2024-06-20 15:59:11,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 571 transitions, 8230 flow [2024-06-20 15:59:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:59:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:59:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:59:11,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-20 15:59:11,691 INFO L175 Difference]: Start difference. First operand has 587 places, 557 transitions, 6975 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:59:11,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 571 transitions, 8230 flow [2024-06-20 15:59:16,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 571 transitions, 8042 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-20 15:59:16,209 INFO L231 Difference]: Finished difference. Result has 590 places, 559 transitions, 7003 flow [2024-06-20 15:59:16,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6789, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7003, PETRI_PLACES=590, PETRI_TRANSITIONS=559} [2024-06-20 15:59:16,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 559 predicate places. [2024-06-20 15:59:16,209 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 559 transitions, 7003 flow [2024-06-20 15:59:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:16,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:16,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-20 15:59:16,210 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:16,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1057589505, now seen corresponding path program 18 times [2024-06-20 15:59:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:16,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719884538] [2024-06-20 15:59:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:16,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:17,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:17,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719884538] [2024-06-20 15:59:17,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719884538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:17,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:17,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:59:17,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563604499] [2024-06-20 15:59:17,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:17,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:59:17,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:59:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:59:17,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:17,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 559 transitions, 7003 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:17,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:17,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:17,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:18,180 INFO L124 PetriNetUnfolderBase]: 1143/2190 cut-off events. [2024-06-20 15:59:18,180 INFO L125 PetriNetUnfolderBase]: For 830802/830805 co-relation queries the response was YES. [2024-06-20 15:59:18,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20974 conditions, 2190 events. 1143/2190 cut-off events. For 830802/830805 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 14469 event pairs, 107 based on Foata normal form. 2/2187 useless extension candidates. Maximal degree in co-relation 20713. Up to 1913 conditions per place. [2024-06-20 15:59:18,219 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 518 selfloop transitions, 51 changer transitions 0/572 dead transitions. [2024-06-20 15:59:18,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 572 transitions, 8245 flow [2024-06-20 15:59:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:59:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:59:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:59:18,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 15:59:18,221 INFO L175 Difference]: Start difference. First operand has 590 places, 559 transitions, 7003 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:59:18,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 572 transitions, 8245 flow [2024-06-20 15:59:23,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 572 transitions, 8060 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:23,138 INFO L231 Difference]: Finished difference. Result has 593 places, 560 transitions, 7004 flow [2024-06-20 15:59:23,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7004, PETRI_PLACES=593, PETRI_TRANSITIONS=560} [2024-06-20 15:59:23,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 562 predicate places. [2024-06-20 15:59:23,139 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 560 transitions, 7004 flow [2024-06-20 15:59:23,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:23,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:23,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:23,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-20 15:59:23,139 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:23,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1052079255, now seen corresponding path program 19 times [2024-06-20 15:59:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138588519] [2024-06-20 15:59:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:24,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:24,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138588519] [2024-06-20 15:59:24,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138588519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:24,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:24,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:59:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225701029] [2024-06-20 15:59:24,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:24,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:59:24,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:59:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:59:24,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:24,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 560 transitions, 7004 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:24,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:24,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:24,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:25,277 INFO L124 PetriNetUnfolderBase]: 1147/2198 cut-off events. [2024-06-20 15:59:25,277 INFO L125 PetriNetUnfolderBase]: For 839572/839575 co-relation queries the response was YES. [2024-06-20 15:59:25,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21038 conditions, 2198 events. 1147/2198 cut-off events. For 839572/839575 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 14504 event pairs, 109 based on Foata normal form. 2/2195 useless extension candidates. Maximal degree in co-relation 20776. Up to 1920 conditions per place. [2024-06-20 15:59:25,386 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 514 selfloop transitions, 55 changer transitions 0/572 dead transitions. [2024-06-20 15:59:25,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 572 transitions, 8246 flow [2024-06-20 15:59:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:59:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:59:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:59:25,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-20 15:59:25,388 INFO L175 Difference]: Start difference. First operand has 593 places, 560 transitions, 7004 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:59:25,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 572 transitions, 8246 flow [2024-06-20 15:59:29,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 572 transitions, 8070 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-20 15:59:29,834 INFO L231 Difference]: Finished difference. Result has 595 places, 561 transitions, 7024 flow [2024-06-20 15:59:29,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6828, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7024, PETRI_PLACES=595, PETRI_TRANSITIONS=561} [2024-06-20 15:59:29,835 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 564 predicate places. [2024-06-20 15:59:29,835 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 561 transitions, 7024 flow [2024-06-20 15:59:29,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:29,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:29,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:29,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-20 15:59:29,836 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:29,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1717889099, now seen corresponding path program 20 times [2024-06-20 15:59:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:29,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695546256] [2024-06-20 15:59:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:29,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:31,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695546256] [2024-06-20 15:59:31,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695546256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:31,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:31,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:59:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407978646] [2024-06-20 15:59:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:31,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:59:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:59:31,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:59:31,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:31,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 561 transitions, 7024 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:31,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:31,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:31,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:32,134 INFO L124 PetriNetUnfolderBase]: 1151/2206 cut-off events. [2024-06-20 15:59:32,134 INFO L125 PetriNetUnfolderBase]: For 848405/848408 co-relation queries the response was YES. [2024-06-20 15:59:32,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21122 conditions, 2206 events. 1151/2206 cut-off events. For 848405/848408 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 14583 event pairs, 109 based on Foata normal form. 2/2203 useless extension candidates. Maximal degree in co-relation 20859. Up to 1907 conditions per place. [2024-06-20 15:59:32,178 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 506 selfloop transitions, 64 changer transitions 0/573 dead transitions. [2024-06-20 15:59:32,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 573 transitions, 8270 flow [2024-06-20 15:59:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:59:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:59:32,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 15:59:32,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-20 15:59:32,179 INFO L175 Difference]: Start difference. First operand has 595 places, 561 transitions, 7024 flow. Second operand 11 states and 138 transitions. [2024-06-20 15:59:32,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 573 transitions, 8270 flow [2024-06-20 15:59:37,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 573 transitions, 8084 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-20 15:59:37,022 INFO L231 Difference]: Finished difference. Result has 597 places, 562 transitions, 7054 flow [2024-06-20 15:59:37,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6838, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7054, PETRI_PLACES=597, PETRI_TRANSITIONS=562} [2024-06-20 15:59:37,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 566 predicate places. [2024-06-20 15:59:37,023 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 562 transitions, 7054 flow [2024-06-20 15:59:37,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:37,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:37,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:37,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-20 15:59:37,024 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:37,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1974604811, now seen corresponding path program 23 times [2024-06-20 15:59:37,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:37,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510254945] [2024-06-20 15:59:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510254945] [2024-06-20 15:59:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510254945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:38,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:38,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:59:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923056999] [2024-06-20 15:59:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:38,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:59:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:59:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:59:38,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:38,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 562 transitions, 7054 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:38,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:38,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:38,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:39,386 INFO L124 PetriNetUnfolderBase]: 1162/2226 cut-off events. [2024-06-20 15:59:39,387 INFO L125 PetriNetUnfolderBase]: For 855752/855755 co-relation queries the response was YES. [2024-06-20 15:59:39,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21504 conditions, 2226 events. 1162/2226 cut-off events. For 855752/855755 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 14731 event pairs, 116 based on Foata normal form. 1/2222 useless extension candidates. Maximal degree in co-relation 21240. Up to 1834 conditions per place. [2024-06-20 15:59:39,423 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 475 selfloop transitions, 103 changer transitions 0/581 dead transitions. [2024-06-20 15:59:39,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 581 transitions, 8842 flow [2024-06-20 15:59:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:59:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:59:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-20 15:59:39,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-20 15:59:39,424 INFO L175 Difference]: Start difference. First operand has 597 places, 562 transitions, 7054 flow. Second operand 12 states and 155 transitions. [2024-06-20 15:59:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 581 transitions, 8842 flow [2024-06-20 15:59:44,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 581 transitions, 8636 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-20 15:59:44,881 INFO L231 Difference]: Finished difference. Result has 601 places, 568 transitions, 7265 flow [2024-06-20 15:59:44,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6848, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7265, PETRI_PLACES=601, PETRI_TRANSITIONS=568} [2024-06-20 15:59:44,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 570 predicate places. [2024-06-20 15:59:44,882 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 568 transitions, 7265 flow [2024-06-20 15:59:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:44,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:44,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:44,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-20 15:59:44,883 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:44,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -317195219, now seen corresponding path program 21 times [2024-06-20 15:59:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896675974] [2024-06-20 15:59:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896675974] [2024-06-20 15:59:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896675974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:46,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:46,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:59:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43525435] [2024-06-20 15:59:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:59:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:59:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:59:46,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:46,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 568 transitions, 7265 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:46,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:46,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:46,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:46,918 INFO L124 PetriNetUnfolderBase]: 1159/2221 cut-off events. [2024-06-20 15:59:46,918 INFO L125 PetriNetUnfolderBase]: For 840067/840070 co-relation queries the response was YES. [2024-06-20 15:59:46,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20992 conditions, 2221 events. 1159/2221 cut-off events. For 840067/840070 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 14705 event pairs, 108 based on Foata normal form. 2/2218 useless extension candidates. Maximal degree in co-relation 20726. Up to 1818 conditions per place. [2024-06-20 15:59:46,960 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 471 selfloop transitions, 105 changer transitions 0/579 dead transitions. [2024-06-20 15:59:46,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 579 transitions, 8441 flow [2024-06-20 15:59:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:59:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:59:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:59:46,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-20 15:59:46,962 INFO L175 Difference]: Start difference. First operand has 601 places, 568 transitions, 7265 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:59:46,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 579 transitions, 8441 flow [2024-06-20 15:59:53,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 579 transitions, 8214 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:53,116 INFO L231 Difference]: Finished difference. Result has 604 places, 568 transitions, 7252 flow [2024-06-20 15:59:53,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7038, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7252, PETRI_PLACES=604, PETRI_TRANSITIONS=568} [2024-06-20 15:59:53,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-20 15:59:53,117 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 568 transitions, 7252 flow [2024-06-20 15:59:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:53,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:53,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:53,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-20 15:59:53,117 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:53,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash 756770082, now seen corresponding path program 18 times [2024-06-20 15:59:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178905100] [2024-06-20 15:59:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:53,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178905100] [2024-06-20 15:59:54,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178905100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:54,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:59:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700720979] [2024-06-20 15:59:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:54,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:59:54,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:54,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:59:54,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:59:54,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 15:59:54,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 568 transitions, 7252 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:54,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:54,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 15:59:54,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:55,120 INFO L124 PetriNetUnfolderBase]: 1163/2229 cut-off events. [2024-06-20 15:59:55,120 INFO L125 PetriNetUnfolderBase]: For 848112/848112 co-relation queries the response was YES. [2024-06-20 15:59:55,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21192 conditions, 2229 events. 1163/2229 cut-off events. For 848112/848112 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 14773 event pairs, 129 based on Foata normal form. 2/2229 useless extension candidates. Maximal degree in co-relation 20924. Up to 2032 conditions per place. [2024-06-20 15:59:55,163 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 550 selfloop transitions, 28 changer transitions 0/581 dead transitions. [2024-06-20 15:59:55,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 581 transitions, 8489 flow [2024-06-20 15:59:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:59:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:59:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 15:59:55,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-20 15:59:55,164 INFO L175 Difference]: Start difference. First operand has 604 places, 568 transitions, 7252 flow. Second operand 11 states and 129 transitions. [2024-06-20 15:59:55,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 581 transitions, 8489 flow [2024-06-20 15:59:59,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 581 transitions, 8054 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-06-20 15:59:59,854 INFO L231 Difference]: Finished difference. Result has 604 places, 569 transitions, 6929 flow [2024-06-20 15:59:59,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6929, PETRI_PLACES=604, PETRI_TRANSITIONS=569} [2024-06-20 15:59:59,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 573 predicate places. [2024-06-20 15:59:59,854 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 569 transitions, 6929 flow [2024-06-20 15:59:59,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:59,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:59,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:59,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-20 15:59:59,855 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:59:59,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash -850774524, now seen corresponding path program 19 times [2024-06-20 15:59:59,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:59,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455612617] [2024-06-20 15:59:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:59,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:01,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:01,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455612617] [2024-06-20 16:00:01,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455612617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:01,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:01,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:00:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291645319] [2024-06-20 16:00:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:01,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:00:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:00:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:00:01,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:00:01,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 569 transitions, 6929 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:01,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:01,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:00:01,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:02,212 INFO L124 PetriNetUnfolderBase]: 1167/2236 cut-off events. [2024-06-20 16:00:02,212 INFO L125 PetriNetUnfolderBase]: For 853407/853407 co-relation queries the response was YES. [2024-06-20 16:00:02,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20852 conditions, 2236 events. 1167/2236 cut-off events. For 853407/853407 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 14869 event pairs, 108 based on Foata normal form. 2/2234 useless extension candidates. Maximal degree in co-relation 20584. Up to 1919 conditions per place. [2024-06-20 16:00:02,253 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 507 selfloop transitions, 71 changer transitions 0/581 dead transitions. [2024-06-20 16:00:02,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 581 transitions, 8161 flow [2024-06-20 16:00:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:00:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:00:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 16:00:02,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-20 16:00:02,254 INFO L175 Difference]: Start difference. First operand has 604 places, 569 transitions, 6929 flow. Second operand 11 states and 140 transitions. [2024-06-20 16:00:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 581 transitions, 8161 flow [2024-06-20 16:00:06,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 581 transitions, 8008 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-20 16:00:06,629 INFO L231 Difference]: Finished difference. Result has 605 places, 570 transitions, 6977 flow [2024-06-20 16:00:06,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6776, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6977, PETRI_PLACES=605, PETRI_TRANSITIONS=570} [2024-06-20 16:00:06,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 574 predicate places. [2024-06-20 16:00:06,630 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 570 transitions, 6977 flow [2024-06-20 16:00:06,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:06,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:06,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:06,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-20 16:00:06,631 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:00:06,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash -857932083, now seen corresponding path program 24 times [2024-06-20 16:00:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:06,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014789815] [2024-06-20 16:00:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:06,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:08,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014789815] [2024-06-20 16:00:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014789815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:08,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:00:08,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820865049] [2024-06-20 16:00:08,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:00:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:00:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:00:08,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:00:08,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 570 transitions, 6977 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:08,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:08,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:00:08,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:09,147 INFO L124 PetriNetUnfolderBase]: 1170/2242 cut-off events. [2024-06-20 16:00:09,147 INFO L125 PetriNetUnfolderBase]: For 839392/839395 co-relation queries the response was YES. [2024-06-20 16:00:09,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20859 conditions, 2242 events. 1170/2242 cut-off events. For 839392/839395 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14866 event pairs, 108 based on Foata normal form. 1/2238 useless extension candidates. Maximal degree in co-relation 20591. Up to 1926 conditions per place. [2024-06-20 16:00:09,191 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 508 selfloop transitions, 72 changer transitions 0/583 dead transitions. [2024-06-20 16:00:09,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 583 transitions, 8237 flow [2024-06-20 16:00:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:00:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:00:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 16:00:09,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 16:00:09,192 INFO L175 Difference]: Start difference. First operand has 605 places, 570 transitions, 6977 flow. Second operand 12 states and 150 transitions. [2024-06-20 16:00:09,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 583 transitions, 8237 flow [2024-06-20 16:00:15,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 583 transitions, 8048 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-20 16:00:15,222 INFO L231 Difference]: Finished difference. Result has 608 places, 572 transitions, 7017 flow [2024-06-20 16:00:15,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6788, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7017, PETRI_PLACES=608, PETRI_TRANSITIONS=572} [2024-06-20 16:00:15,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 577 predicate places. [2024-06-20 16:00:15,223 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 572 transitions, 7017 flow [2024-06-20 16:00:15,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:15,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:15,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:15,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-20 16:00:15,224 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:00:15,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -309570428, now seen corresponding path program 20 times [2024-06-20 16:00:15,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:15,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587323942] [2024-06-20 16:00:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:15,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587323942] [2024-06-20 16:00:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587323942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:16,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:00:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052794753] [2024-06-20 16:00:16,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:00:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:00:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:00:16,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:00:16,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 572 transitions, 7017 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:16,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:16,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:00:16,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:17,795 INFO L124 PetriNetUnfolderBase]: 1174/2250 cut-off events. [2024-06-20 16:00:17,796 INFO L125 PetriNetUnfolderBase]: For 869283/869286 co-relation queries the response was YES. [2024-06-20 16:00:17,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20932 conditions, 2250 events. 1174/2250 cut-off events. For 869283/869286 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 14963 event pairs, 110 based on Foata normal form. 2/2247 useless extension candidates. Maximal degree in co-relation 20663. Up to 1584 conditions per place. [2024-06-20 16:00:17,839 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 411 selfloop transitions, 171 changer transitions 0/585 dead transitions. [2024-06-20 16:00:17,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 585 transitions, 8266 flow [2024-06-20 16:00:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:00:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:00:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-20 16:00:17,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-20 16:00:17,840 INFO L175 Difference]: Start difference. First operand has 608 places, 572 transitions, 7017 flow. Second operand 11 states and 146 transitions. [2024-06-20 16:00:17,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 585 transitions, 8266 flow [2024-06-20 16:00:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 585 transitions, 8020 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-20 16:00:23,662 INFO L231 Difference]: Finished difference. Result has 609 places, 573 transitions, 7173 flow [2024-06-20 16:00:23,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6771, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7173, PETRI_PLACES=609, PETRI_TRANSITIONS=573} [2024-06-20 16:00:23,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 578 predicate places. [2024-06-20 16:00:23,663 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 573 transitions, 7173 flow [2024-06-20 16:00:23,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:23,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:23,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:23,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-20 16:00:23,666 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:00:23,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1974873860, now seen corresponding path program 21 times [2024-06-20 16:00:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:23,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942445987] [2024-06-20 16:00:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942445987] [2024-06-20 16:00:25,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942445987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:25,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:25,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:00:25,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790221670] [2024-06-20 16:00:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:00:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:00:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:00:25,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:00:25,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 573 transitions, 7173 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:25,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:25,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:00:25,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:26,143 INFO L124 PetriNetUnfolderBase]: 1195/2289 cut-off events. [2024-06-20 16:00:26,143 INFO L125 PetriNetUnfolderBase]: For 924300/924303 co-relation queries the response was YES. [2024-06-20 16:00:26,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21842 conditions, 2289 events. 1195/2289 cut-off events. For 924300/924303 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 15272 event pairs, 111 based on Foata normal form. 2/2286 useless extension candidates. Maximal degree in co-relation 21574. Up to 1936 conditions per place. [2024-06-20 16:00:26,188 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 508 selfloop transitions, 83 changer transitions 0/594 dead transitions. [2024-06-20 16:00:26,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 594 transitions, 8963 flow [2024-06-20 16:00:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:00:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:00:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-20 16:00:26,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-20 16:00:26,189 INFO L175 Difference]: Start difference. First operand has 609 places, 573 transitions, 7173 flow. Second operand 12 states and 155 transitions. [2024-06-20 16:00:26,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 594 transitions, 8963 flow [2024-06-20 16:00:32,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 594 transitions, 8565 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-20 16:00:32,235 INFO L231 Difference]: Finished difference. Result has 614 places, 579 transitions, 7119 flow [2024-06-20 16:00:32,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7119, PETRI_PLACES=614, PETRI_TRANSITIONS=579} [2024-06-20 16:00:32,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 583 predicate places. [2024-06-20 16:00:32,236 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 579 transitions, 7119 flow [2024-06-20 16:00:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:32,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:32,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-20 16:00:32,236 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:00:32,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1974864560, now seen corresponding path program 22 times [2024-06-20 16:00:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119632141] [2024-06-20 16:00:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119632141] [2024-06-20 16:00:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119632141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:33,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:33,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:00:33,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707769602] [2024-06-20 16:00:33,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:33,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:00:33,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:33,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:00:33,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:00:33,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:00:33,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 579 transitions, 7119 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:33,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:00:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:34,555 INFO L124 PetriNetUnfolderBase]: 1199/2297 cut-off events. [2024-06-20 16:00:34,555 INFO L125 PetriNetUnfolderBase]: For 933054/933057 co-relation queries the response was YES. [2024-06-20 16:00:34,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21767 conditions, 2297 events. 1199/2297 cut-off events. For 933054/933057 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 15319 event pairs, 113 based on Foata normal form. 2/2294 useless extension candidates. Maximal degree in co-relation 21496. Up to 1963 conditions per place. [2024-06-20 16:00:34,602 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 508 selfloop transitions, 82 changer transitions 0/593 dead transitions. [2024-06-20 16:00:34,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 593 transitions, 8390 flow [2024-06-20 16:00:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:00:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:00:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-20 16:00:34,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-20 16:00:34,603 INFO L175 Difference]: Start difference. First operand has 614 places, 579 transitions, 7119 flow. Second operand 12 states and 153 transitions. [2024-06-20 16:00:34,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 593 transitions, 8390 flow [2024-06-20 16:00:40,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 593 transitions, 8238 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-20 16:00:40,042 INFO L231 Difference]: Finished difference. Result has 621 places, 581 transitions, 7210 flow [2024-06-20 16:00:40,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6977, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7210, PETRI_PLACES=621, PETRI_TRANSITIONS=581} [2024-06-20 16:00:40,042 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 590 predicate places. [2024-06-20 16:00:40,042 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 581 transitions, 7210 flow [2024-06-20 16:00:40,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:40,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:40,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:40,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-20 16:00:40,043 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:00:40,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash -309561128, now seen corresponding path program 23 times [2024-06-20 16:00:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:40,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645295856] [2024-06-20 16:00:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:40,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:41,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:41,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645295856] [2024-06-20 16:00:41,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645295856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:41,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:41,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:00:41,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378834609] [2024-06-20 16:00:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:41,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:00:41,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:00:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:00:41,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:00:41,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 581 transitions, 7210 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:41,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:41,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:00:41,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:42,453 INFO L124 PetriNetUnfolderBase]: 1210/2318 cut-off events. [2024-06-20 16:00:42,454 INFO L125 PetriNetUnfolderBase]: For 987766/987769 co-relation queries the response was YES. [2024-06-20 16:00:42,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22553 conditions, 2318 events. 1210/2318 cut-off events. For 987766/987769 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 15495 event pairs, 112 based on Foata normal form. 2/2315 useless extension candidates. Maximal degree in co-relation 22279. Up to 1791 conditions per place. [2024-06-20 16:00:42,499 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 457 selfloop transitions, 138 changer transitions 0/598 dead transitions. [2024-06-20 16:00:42,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 598 transitions, 8977 flow [2024-06-20 16:00:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:00:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:00:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-20 16:00:42,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-20 16:00:42,500 INFO L175 Difference]: Start difference. First operand has 621 places, 581 transitions, 7210 flow. Second operand 12 states and 154 transitions. [2024-06-20 16:00:42,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 598 transitions, 8977 flow [2024-06-20 16:00:49,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 598 transitions, 8769 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-20 16:00:49,602 INFO L231 Difference]: Finished difference. Result has 624 places, 584 transitions, 7407 flow [2024-06-20 16:00:49,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7002, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7407, PETRI_PLACES=624, PETRI_TRANSITIONS=584} [2024-06-20 16:00:49,603 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 593 predicate places. [2024-06-20 16:00:49,603 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 584 transitions, 7407 flow [2024-06-20 16:00:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:49,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:49,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-20 16:00:49,604 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:00:49,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2100881163, now seen corresponding path program 25 times [2024-06-20 16:00:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:49,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511813846] [2024-06-20 16:00:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:51,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:51,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511813846] [2024-06-20 16:00:51,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511813846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:51,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:00:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565968715] [2024-06-20 16:00:51,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:00:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:00:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:00:51,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:00:51,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 584 transitions, 7407 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:51,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:51,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:00:51,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:52,243 INFO L124 PetriNetUnfolderBase]: 1213/2325 cut-off events. [2024-06-20 16:00:52,244 INFO L125 PetriNetUnfolderBase]: For 974415/974418 co-relation queries the response was YES. [2024-06-20 16:00:52,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22736 conditions, 2325 events. 1213/2325 cut-off events. For 974415/974418 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 15560 event pairs, 114 based on Foata normal form. 1/2321 useless extension candidates. Maximal degree in co-relation 22461. Up to 2034 conditions per place. [2024-06-20 16:00:52,289 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 532 selfloop transitions, 62 changer transitions 0/597 dead transitions. [2024-06-20 16:00:52,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 597 transitions, 8695 flow [2024-06-20 16:00:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:00:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:00:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 16:00:52,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-20 16:00:52,290 INFO L175 Difference]: Start difference. First operand has 624 places, 584 transitions, 7407 flow. Second operand 12 states and 145 transitions. [2024-06-20 16:00:52,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 597 transitions, 8695 flow [2024-06-20 16:00:58,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 597 transitions, 8474 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-20 16:00:58,970 INFO L231 Difference]: Finished difference. Result has 631 places, 586 transitions, 7395 flow [2024-06-20 16:00:58,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7186, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7395, PETRI_PLACES=631, PETRI_TRANSITIONS=586} [2024-06-20 16:00:58,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 600 predicate places. [2024-06-20 16:00:58,971 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 586 transitions, 7395 flow [2024-06-20 16:00:58,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:58,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:58,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:58,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-20 16:00:58,972 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:00:58,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash -309837617, now seen corresponding path program 26 times [2024-06-20 16:00:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468291189] [2024-06-20 16:00:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:00,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468291189] [2024-06-20 16:01:00,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468291189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:00,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:00,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:01:00,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163756971] [2024-06-20 16:01:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:00,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:01:00,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:01:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:01:01,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:01:01,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 586 transitions, 7395 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:01,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:01,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:01:01,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:02,011 INFO L124 PetriNetUnfolderBase]: 1211/2322 cut-off events. [2024-06-20 16:01:02,011 INFO L125 PetriNetUnfolderBase]: For 958142/958145 co-relation queries the response was YES. [2024-06-20 16:01:02,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22444 conditions, 2322 events. 1211/2322 cut-off events. For 958142/958145 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 15560 event pairs, 123 based on Foata normal form. 1/2318 useless extension candidates. Maximal degree in co-relation 22167. Up to 1651 conditions per place. [2024-06-20 16:01:02,054 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 400 selfloop transitions, 195 changer transitions 0/598 dead transitions. [2024-06-20 16:01:02,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 598 transitions, 8615 flow [2024-06-20 16:01:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:01:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:01:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-20 16:01:02,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-20 16:01:02,059 INFO L175 Difference]: Start difference. First operand has 631 places, 586 transitions, 7395 flow. Second operand 12 states and 154 transitions. [2024-06-20 16:01:02,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 598 transitions, 8615 flow [2024-06-20 16:01:08,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 598 transitions, 8358 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-06-20 16:01:08,603 INFO L231 Difference]: Finished difference. Result has 633 places, 586 transitions, 7533 flow [2024-06-20 16:01:08,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7138, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7533, PETRI_PLACES=633, PETRI_TRANSITIONS=586} [2024-06-20 16:01:08,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 602 predicate places. [2024-06-20 16:01:08,604 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 586 transitions, 7533 flow [2024-06-20 16:01:08,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:08,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:08,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:08,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-20 16:01:08,605 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:01:08,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1984128290, now seen corresponding path program 24 times [2024-06-20 16:01:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:08,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488285028] [2024-06-20 16:01:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:08,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:09,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488285028] [2024-06-20 16:01:09,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488285028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:09,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:01:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299483198] [2024-06-20 16:01:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:09,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:01:09,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:01:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:01:10,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:01:10,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 586 transitions, 7533 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:10,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:10,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:01:10,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:11,010 INFO L124 PetriNetUnfolderBase]: 1244/2389 cut-off events. [2024-06-20 16:01:11,010 INFO L125 PetriNetUnfolderBase]: For 1218007/1218010 co-relation queries the response was YES. [2024-06-20 16:01:11,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25420 conditions, 2389 events. 1244/2389 cut-off events. For 1218007/1218010 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 16041 event pairs, 132 based on Foata normal form. 2/2386 useless extension candidates. Maximal degree in co-relation 25142. Up to 1838 conditions per place. [2024-06-20 16:01:11,061 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 492 selfloop transitions, 112 changer transitions 0/607 dead transitions. [2024-06-20 16:01:11,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 607 transitions, 9405 flow [2024-06-20 16:01:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:01:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:01:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-20 16:01:11,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-20 16:01:11,062 INFO L175 Difference]: Start difference. First operand has 633 places, 586 transitions, 7533 flow. Second operand 12 states and 161 transitions. [2024-06-20 16:01:11,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 607 transitions, 9405 flow [2024-06-20 16:01:18,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 607 transitions, 9019 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 16:01:18,925 INFO L231 Difference]: Finished difference. Result has 636 places, 588 transitions, 7497 flow [2024-06-20 16:01:18,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7147, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7497, PETRI_PLACES=636, PETRI_TRANSITIONS=588} [2024-06-20 16:01:18,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 605 predicate places. [2024-06-20 16:01:18,925 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 588 transitions, 7497 flow [2024-06-20 16:01:18,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:18,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:18,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:18,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-20 16:01:18,926 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:01:18,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash -316980017, now seen corresponding path program 27 times [2024-06-20 16:01:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059586662] [2024-06-20 16:01:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:20,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:20,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059586662] [2024-06-20 16:01:20,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059586662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:20,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:20,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:01:20,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464912651] [2024-06-20 16:01:20,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:20,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:01:20,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:20,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:01:20,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:01:20,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:01:20,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 588 transitions, 7497 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:20,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:20,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:01:20,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:21,226 INFO L124 PetriNetUnfolderBase]: 1247/2392 cut-off events. [2024-06-20 16:01:21,226 INFO L125 PetriNetUnfolderBase]: For 1205975/1205978 co-relation queries the response was YES. [2024-06-20 16:01:21,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25404 conditions, 2392 events. 1247/2392 cut-off events. For 1205975/1205978 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 16069 event pairs, 131 based on Foata normal form. 1/2388 useless extension candidates. Maximal degree in co-relation 25125. Up to 1407 conditions per place. [2024-06-20 16:01:21,275 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 333 selfloop transitions, 267 changer transitions 0/603 dead transitions. [2024-06-20 16:01:21,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 603 transitions, 10091 flow [2024-06-20 16:01:21,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:01:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:01:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-20 16:01:21,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-20 16:01:21,276 INFO L175 Difference]: Start difference. First operand has 636 places, 588 transitions, 7497 flow. Second operand 11 states and 151 transitions. [2024-06-20 16:01:21,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 603 transitions, 10091 flow [2024-06-20 16:01:29,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 603 transitions, 9823 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-20 16:01:29,358 INFO L231 Difference]: Finished difference. Result has 639 places, 590 transitions, 7841 flow [2024-06-20 16:01:29,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7229, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7841, PETRI_PLACES=639, PETRI_TRANSITIONS=590} [2024-06-20 16:01:29,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 608 predicate places. [2024-06-20 16:01:29,359 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 590 transitions, 7841 flow [2024-06-20 16:01:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:29,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:29,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:29,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-20 16:01:29,359 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:01:29,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:29,360 INFO L85 PathProgramCache]: Analyzing trace with hash -316987457, now seen corresponding path program 28 times [2024-06-20 16:01:29,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:29,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839311365] [2024-06-20 16:01:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839311365] [2024-06-20 16:01:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839311365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:31,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:31,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:01:31,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325246345] [2024-06-20 16:01:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:31,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:01:31,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:31,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:01:31,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:01:31,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:01:31,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 590 transitions, 7841 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:31,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:31,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:01:31,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:32,220 INFO L124 PetriNetUnfolderBase]: 1250/2399 cut-off events. [2024-06-20 16:01:32,220 INFO L125 PetriNetUnfolderBase]: For 1216951/1216954 co-relation queries the response was YES. [2024-06-20 16:01:32,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25759 conditions, 2399 events. 1250/2399 cut-off events. For 1216951/1216954 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 16129 event pairs, 131 based on Foata normal form. 1/2395 useless extension candidates. Maximal degree in co-relation 25479. Up to 1411 conditions per place. [2024-06-20 16:01:32,269 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 334 selfloop transitions, 269 changer transitions 0/606 dead transitions. [2024-06-20 16:01:32,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 606 transitions, 10453 flow [2024-06-20 16:01:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:01:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:01:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-20 16:01:32,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-20 16:01:32,270 INFO L175 Difference]: Start difference. First operand has 639 places, 590 transitions, 7841 flow. Second operand 12 states and 161 transitions. [2024-06-20 16:01:32,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 606 transitions, 10453 flow [2024-06-20 16:01:38,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 606 transitions, 9846 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-20 16:01:38,990 INFO L231 Difference]: Finished difference. Result has 641 places, 592 transitions, 7857 flow [2024-06-20 16:01:38,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7244, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7857, PETRI_PLACES=641, PETRI_TRANSITIONS=592} [2024-06-20 16:01:38,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 610 predicate places. [2024-06-20 16:01:38,991 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 592 transitions, 7857 flow [2024-06-20 16:01:38,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:38,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:38,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:38,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-20 16:01:38,991 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:01:38,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:38,992 INFO L85 PathProgramCache]: Analyzing trace with hash -316979738, now seen corresponding path program 25 times [2024-06-20 16:01:38,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:38,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21172820] [2024-06-20 16:01:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:38,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21172820] [2024-06-20 16:01:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21172820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:01:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391692823] [2024-06-20 16:01:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:01:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:01:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:01:40,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:01:40,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 592 transitions, 7857 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:40,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:40,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:01:40,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:41,695 INFO L124 PetriNetUnfolderBase]: 1247/2394 cut-off events. [2024-06-20 16:01:41,696 INFO L125 PetriNetUnfolderBase]: For 1192977/1192980 co-relation queries the response was YES. [2024-06-20 16:01:41,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25213 conditions, 2394 events. 1247/2394 cut-off events. For 1192977/1192980 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 16073 event pairs, 130 based on Foata normal form. 2/2391 useless extension candidates. Maximal degree in co-relation 24933. Up to 1896 conditions per place. [2024-06-20 16:01:41,743 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 466 selfloop transitions, 135 changer transitions 0/604 dead transitions. [2024-06-20 16:01:41,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 604 transitions, 9085 flow [2024-06-20 16:01:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:01:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:01:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 16:01:41,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 16:01:41,745 INFO L175 Difference]: Start difference. First operand has 641 places, 592 transitions, 7857 flow. Second operand 12 states and 150 transitions. [2024-06-20 16:01:41,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 604 transitions, 9085 flow [2024-06-20 16:01:47,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 604 transitions, 8443 flow, removed 52 selfloop flow, removed 10 redundant places. [2024-06-20 16:01:47,808 INFO L231 Difference]: Finished difference. Result has 643 places, 592 transitions, 7489 flow [2024-06-20 16:01:47,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7215, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7489, PETRI_PLACES=643, PETRI_TRANSITIONS=592} [2024-06-20 16:01:47,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 612 predicate places. [2024-06-20 16:01:47,824 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 592 transitions, 7489 flow [2024-06-20 16:01:47,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:47,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:47,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:47,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-20 16:01:47,825 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:01:47,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash -50956028, now seen corresponding path program 26 times [2024-06-20 16:01:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:47,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766720564] [2024-06-20 16:01:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:49,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766720564] [2024-06-20 16:01:49,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766720564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:49,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:49,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:01:49,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157361916] [2024-06-20 16:01:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:01:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:01:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:01:49,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:01:49,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 592 transitions, 7489 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:49,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:49,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:01:49,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:50,200 INFO L124 PetriNetUnfolderBase]: 1258/2415 cut-off events. [2024-06-20 16:01:50,201 INFO L125 PetriNetUnfolderBase]: For 1251401/1251404 co-relation queries the response was YES. [2024-06-20 16:01:50,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25615 conditions, 2415 events. 1258/2415 cut-off events. For 1251401/1251404 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 16247 event pairs, 136 based on Foata normal form. 2/2412 useless extension candidates. Maximal degree in co-relation 25334. Up to 1792 conditions per place. [2024-06-20 16:01:50,248 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 453 selfloop transitions, 155 changer transitions 0/611 dead transitions. [2024-06-20 16:01:50,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 611 transitions, 9311 flow [2024-06-20 16:01:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:01:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:01:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-20 16:01:50,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-20 16:01:50,249 INFO L175 Difference]: Start difference. First operand has 643 places, 592 transitions, 7489 flow. Second operand 12 states and 158 transitions. [2024-06-20 16:01:50,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 611 transitions, 9311 flow [2024-06-20 16:01:56,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 611 transitions, 9033 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-20 16:01:56,242 INFO L231 Difference]: Finished difference. Result has 644 places, 595 transitions, 7659 flow [2024-06-20 16:01:56,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7213, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7659, PETRI_PLACES=644, PETRI_TRANSITIONS=595} [2024-06-20 16:01:56,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 613 predicate places. [2024-06-20 16:01:56,243 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 595 transitions, 7659 flow [2024-06-20 16:01:56,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:56,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:56,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-20 16:01:56,243 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:01:56,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -51282458, now seen corresponding path program 27 times [2024-06-20 16:01:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830955178] [2024-06-20 16:01:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:56,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:57,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830955178] [2024-06-20 16:01:57,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830955178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:57,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:57,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:01:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765867400] [2024-06-20 16:01:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:01:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:01:57,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:01:57,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:01:57,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 595 transitions, 7659 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:57,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:57,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:01:57,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:58,601 INFO L124 PetriNetUnfolderBase]: 1265/2428 cut-off events. [2024-06-20 16:01:58,601 INFO L125 PetriNetUnfolderBase]: For 1264644/1264647 co-relation queries the response was YES. [2024-06-20 16:01:58,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25887 conditions, 2428 events. 1265/2428 cut-off events. For 1264644/1264647 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 16366 event pairs, 144 based on Foata normal form. 2/2425 useless extension candidates. Maximal degree in co-relation 25605. Up to 1867 conditions per place. [2024-06-20 16:01:58,650 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 455 selfloop transitions, 153 changer transitions 0/611 dead transitions. [2024-06-20 16:01:58,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 611 transitions, 8990 flow [2024-06-20 16:01:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:01:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:01:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-20 16:01:58,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-20 16:01:58,652 INFO L175 Difference]: Start difference. First operand has 644 places, 595 transitions, 7659 flow. Second operand 12 states and 155 transitions. [2024-06-20 16:01:58,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 611 transitions, 8990 flow [2024-06-20 16:02:05,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 611 transitions, 8741 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-20 16:02:05,393 INFO L231 Difference]: Finished difference. Result has 651 places, 598 transitions, 7805 flow [2024-06-20 16:02:05,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7424, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7805, PETRI_PLACES=651, PETRI_TRANSITIONS=598} [2024-06-20 16:02:05,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 620 predicate places. [2024-06-20 16:02:05,393 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 598 transitions, 7805 flow [2024-06-20 16:02:05,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:05,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:05,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:05,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-20 16:02:05,394 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:02:05,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1983811160, now seen corresponding path program 28 times [2024-06-20 16:02:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:05,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756759116] [2024-06-20 16:02:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:06,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:06,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756759116] [2024-06-20 16:02:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756759116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:06,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:06,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:02:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62310877] [2024-06-20 16:02:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:06,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:02:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:02:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:02:06,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:02:06,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 598 transitions, 7805 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:06,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:06,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:02:06,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:07,662 INFO L124 PetriNetUnfolderBase]: 1276/2449 cut-off events. [2024-06-20 16:02:07,663 INFO L125 PetriNetUnfolderBase]: For 1324823/1324826 co-relation queries the response was YES. [2024-06-20 16:02:07,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26761 conditions, 2449 events. 1276/2449 cut-off events. For 1324823/1324826 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 16555 event pairs, 139 based on Foata normal form. 2/2446 useless extension candidates. Maximal degree in co-relation 26477. Up to 2002 conditions per place. [2024-06-20 16:02:07,711 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 500 selfloop transitions, 113 changer transitions 0/616 dead transitions. [2024-06-20 16:02:07,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 616 transitions, 9621 flow [2024-06-20 16:02:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:02:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:02:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 169 transitions. [2024-06-20 16:02:07,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 16:02:07,713 INFO L175 Difference]: Start difference. First operand has 651 places, 598 transitions, 7805 flow. Second operand 13 states and 169 transitions. [2024-06-20 16:02:07,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 616 transitions, 9621 flow [2024-06-20 16:02:15,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 616 transitions, 9272 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-20 16:02:15,029 INFO L231 Difference]: Finished difference. Result has 655 places, 600 transitions, 7802 flow [2024-06-20 16:02:15,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7456, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7802, PETRI_PLACES=655, PETRI_TRANSITIONS=600} [2024-06-20 16:02:15,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 624 predicate places. [2024-06-20 16:02:15,030 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 600 transitions, 7802 flow [2024-06-20 16:02:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:15,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:15,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-20 16:02:15,030 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:02:15,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash -60486947, now seen corresponding path program 29 times [2024-06-20 16:02:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064366342] [2024-06-20 16:02:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064366342] [2024-06-20 16:02:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064366342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:17,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:17,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:02:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50456953] [2024-06-20 16:02:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:17,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:02:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:02:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:02:17,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:02:17,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 600 transitions, 7802 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:17,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:17,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:02:17,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:18,243 INFO L124 PetriNetUnfolderBase]: 1274/2444 cut-off events. [2024-06-20 16:02:18,243 INFO L125 PetriNetUnfolderBase]: For 1286548/1286551 co-relation queries the response was YES. [2024-06-20 16:02:18,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26406 conditions, 2444 events. 1274/2444 cut-off events. For 1286548/1286551 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 16508 event pairs, 145 based on Foata normal form. 1/2440 useless extension candidates. Maximal degree in co-relation 26121. Up to 1775 conditions per place. [2024-06-20 16:02:18,287 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 414 selfloop transitions, 195 changer transitions 0/612 dead transitions. [2024-06-20 16:02:18,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 612 transitions, 9050 flow [2024-06-20 16:02:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:02:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:02:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-20 16:02:18,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-20 16:02:18,288 INFO L175 Difference]: Start difference. First operand has 655 places, 600 transitions, 7802 flow. Second operand 12 states and 155 transitions. [2024-06-20 16:02:18,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 612 transitions, 9050 flow [2024-06-20 16:02:25,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 612 transitions, 8789 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-20 16:02:25,447 INFO L231 Difference]: Finished difference. Result has 658 places, 600 transitions, 7936 flow [2024-06-20 16:02:25,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7541, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7936, PETRI_PLACES=658, PETRI_TRANSITIONS=600} [2024-06-20 16:02:25,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 627 predicate places. [2024-06-20 16:02:25,447 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 600 transitions, 7936 flow [2024-06-20 16:02:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:25,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:25,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:25,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-20 16:02:25,448 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:02:25,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash -857924364, now seen corresponding path program 29 times [2024-06-20 16:02:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551488945] [2024-06-20 16:02:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:25,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:26,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551488945] [2024-06-20 16:02:26,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551488945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:26,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:26,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:02:26,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758505231] [2024-06-20 16:02:26,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:26,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:02:26,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:26,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:02:26,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:02:26,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:02:26,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 600 transitions, 7936 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:26,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:02:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:27,774 INFO L124 PetriNetUnfolderBase]: 1278/2454 cut-off events. [2024-06-20 16:02:27,774 INFO L125 PetriNetUnfolderBase]: For 1310672/1310675 co-relation queries the response was YES. [2024-06-20 16:02:27,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26676 conditions, 2454 events. 1278/2454 cut-off events. For 1310672/1310675 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 16607 event pairs, 140 based on Foata normal form. 2/2451 useless extension candidates. Maximal degree in co-relation 26390. Up to 2136 conditions per place. [2024-06-20 16:02:27,823 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 540 selfloop transitions, 69 changer transitions 0/612 dead transitions. [2024-06-20 16:02:27,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 612 transitions, 9234 flow [2024-06-20 16:02:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:02:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:02:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 16:02:27,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-20 16:02:27,825 INFO L175 Difference]: Start difference. First operand has 658 places, 600 transitions, 7936 flow. Second operand 11 states and 141 transitions. [2024-06-20 16:02:27,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 612 transitions, 9234 flow [2024-06-20 16:02:35,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 612 transitions, 8840 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 16:02:35,909 INFO L231 Difference]: Finished difference. Result has 660 places, 601 transitions, 7742 flow [2024-06-20 16:02:35,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7542, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7742, PETRI_PLACES=660, PETRI_TRANSITIONS=601} [2024-06-20 16:02:35,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 629 predicate places. [2024-06-20 16:02:35,910 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 601 transitions, 7742 flow [2024-06-20 16:02:35,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:35,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:35,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:35,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-20 16:02:35,911 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:02:35,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash -59515486, now seen corresponding path program 30 times [2024-06-20 16:02:35,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:35,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336684079] [2024-06-20 16:02:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:35,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336684079] [2024-06-20 16:02:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336684079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:37,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:02:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608510097] [2024-06-20 16:02:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:02:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:02:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:02:37,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:02:37,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 601 transitions, 7742 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:37,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:37,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:02:37,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:38,397 INFO L124 PetriNetUnfolderBase]: 1293/2483 cut-off events. [2024-06-20 16:02:38,397 INFO L125 PetriNetUnfolderBase]: For 1373736/1373739 co-relation queries the response was YES. [2024-06-20 16:02:38,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27233 conditions, 2483 events. 1293/2483 cut-off events. For 1373736/1373739 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 16849 event pairs, 139 based on Foata normal form. 2/2480 useless extension candidates. Maximal degree in co-relation 26946. Up to 1963 conditions per place. [2024-06-20 16:02:38,448 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 480 selfloop transitions, 135 changer transitions 0/618 dead transitions. [2024-06-20 16:02:38,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 618 transitions, 9553 flow [2024-06-20 16:02:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:02:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:02:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-20 16:02:38,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-20 16:02:38,449 INFO L175 Difference]: Start difference. First operand has 660 places, 601 transitions, 7742 flow. Second operand 12 states and 156 transitions. [2024-06-20 16:02:38,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 618 transitions, 9553 flow [2024-06-20 16:02:47,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 618 transitions, 9365 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-20 16:02:47,435 INFO L231 Difference]: Finished difference. Result has 664 places, 604 transitions, 7943 flow [2024-06-20 16:02:47,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7554, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7943, PETRI_PLACES=664, PETRI_TRANSITIONS=604} [2024-06-20 16:02:47,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 633 predicate places. [2024-06-20 16:02:47,436 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 604 transitions, 7943 flow [2024-06-20 16:02:47,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:47,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:47,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:47,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-20 16:02:47,437 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:02:47,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash -59784256, now seen corresponding path program 31 times [2024-06-20 16:02:47,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:47,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298409949] [2024-06-20 16:02:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:47,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:48,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:48,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298409949] [2024-06-20 16:02:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298409949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:48,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:48,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:02:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720022516] [2024-06-20 16:02:48,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:48,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:02:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:48,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:02:48,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:02:49,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 16:02:49,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 604 transitions, 7943 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:49,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:49,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 16:02:49,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:49,971 INFO L124 PetriNetUnfolderBase]: 1300/2496 cut-off events. [2024-06-20 16:02:49,971 INFO L125 PetriNetUnfolderBase]: For 1386366/1386369 co-relation queries the response was YES. [2024-06-20 16:02:50,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27515 conditions, 2496 events. 1300/2496 cut-off events. For 1386366/1386369 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 16920 event pairs, 143 based on Foata normal form. 2/2493 useless extension candidates. Maximal degree in co-relation 27226. Up to 1998 conditions per place. [2024-06-20 16:02:50,023 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 483 selfloop transitions, 133 changer transitions 0/619 dead transitions. [2024-06-20 16:02:50,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 619 transitions, 9278 flow [2024-06-20 16:02:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:02:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:02:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-20 16:02:50,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-20 16:02:50,024 INFO L175 Difference]: Start difference. First operand has 664 places, 604 transitions, 7943 flow. Second operand 12 states and 152 transitions. [2024-06-20 16:02:50,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 619 transitions, 9278 flow Killed by 15