./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/fib_unsafe-7.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/mutex-meet/fib_unsafe-7.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/fib_unsafe-7.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-7.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 18:15:37,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 18:15:37,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 18:15:37,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 18:15:37,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 18:15:37,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 18:15:37,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 18:15:37,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 18:15:37,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 18:15:37,532 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 18:15:37,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 18:15:37,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 18:15:37,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 18:15:37,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 18:15:37,534 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 18:15:37,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 18:15:37,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 18:15:37,535 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 18:15:37,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 18:15:37,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 18:15:37,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 18:15:37,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 18:15:37,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 18:15:37,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 18:15:37,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 18:15:37,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 18:15:37,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 18:15:37,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 18:15:37,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 18:15:37,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 18:15:37,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 18:15:37,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 18:15:37,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:15:37,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 18:15:37,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 18:15:37,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 18:15:37,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 18:15:37,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 18:15:37,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 18:15:37,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 18:15:37,541 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 18:15:37,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 18:15:37,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 18:15:37,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 18:15:37,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 18:15:37,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 18:15:37,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 18:15:37,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 18:15:37,794 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 18:15:37,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i [2024-06-20 18:15:38,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 18:15:39,094 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 18:15:39,095 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i [2024-06-20 18:15:39,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d4e3cb6/559c8fb2b1934cfc8be444dc39f200bb/FLAGd8bd5dba8 [2024-06-20 18:15:39,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09d4e3cb6/559c8fb2b1934cfc8be444dc39f200bb [2024-06-20 18:15:39,125 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 18:15:39,126 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 18:15:39,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-7.yml/witness.yml [2024-06-20 18:15:39,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 18:15:39,232 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 18:15:39,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 18:15:39,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 18:15:39,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 18:15:39,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:15:39" (1/2) ... [2024-06-20 18:15:39,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a375ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:15:39, skipping insertion in model container [2024-06-20 18:15:39,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:15:39" (1/2) ... [2024-06-20 18:15:39,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10edcd33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:15:39, skipping insertion in model container [2024-06-20 18:15:39,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:15:39" (2/2) ... [2024-06-20 18:15:39,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a375ac9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:15:39, skipping insertion in model container [2024-06-20 18:15:39,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:15:39" (2/2) ... [2024-06-20 18:15:39,241 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 18:15:39,272 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 18:15:39,273 INFO L97 edCorrectnessWitness]: Location invariant before [L722-L722] ((((((((! multithreaded || 0 <= cur) && (! multithreaded || 0 <= next)) && (! multithreaded || ((0 <= i && 1 <= i) && i != 0))) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= q)) && (! multithreaded || ((((0 <= i && 0 <= j) && 1 <= j) && i != 0) && j != 0))) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= prev)) && (! multithreaded || ((0 <= j && 1 <= j) && j != 0)) [2024-06-20 18:15:39,273 INFO L97 edCorrectnessWitness]: Location invariant before [L721-L721] ((((((((! multithreaded || 0 <= cur) && (! multithreaded || 0 <= next)) && (! multithreaded || ((0 <= i && 1 <= i) && i != 0))) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= q)) && (! multithreaded || ((((0 <= i && 0 <= j) && 1 <= j) && i != 0) && j != 0))) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= prev)) && (! multithreaded || ((0 <= j && 1 <= j) && j != 0)) [2024-06-20 18:15:39,273 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 18:15:39,273 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] multithreaded = 1; [2024-06-20 18:15:39,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 18:15:39,585 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:15:39,593 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 18:15:39,676 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:15:39,704 INFO L206 MainTranslator]: Completed translation [2024-06-20 18:15:39,704 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:15:39 WrapperNode [2024-06-20 18:15:39,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 18:15:39,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 18:15:39,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 18:15:39,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 18:15:39,711 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,720 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,748 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-06-20 18:15:39,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 18:15:39,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 18:15:39,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 18:15:39,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 18:15:39,757 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,757 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,759 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,781 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 18:15:39,782 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,782 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,794 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,797 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,800 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,802 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 18:15:39,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 18:15:39,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 18:15:39,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 18:15:39,809 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 06:15:39" (1/1) ... [2024-06-20 18:15:39,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:15:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:15:39,854 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 18:15:39,908 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 18:15:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-20 18:15:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-20 18:15:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-20 18:15:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-20 18:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 18:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 18:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 18:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 18:15:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 18:15:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 18:15:39,921 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 18:15:40,081 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 18:15:40,084 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 18:15:40,282 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 18:15:40,282 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 18:15:40,370 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 18:15:40,370 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-20 18:15:40,371 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:15:40 BoogieIcfgContainer [2024-06-20 18:15:40,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 18:15:40,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 18:15:40,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 18:15:40,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 18:15:40,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 06:15:39" (1/4) ... [2024-06-20 18:15:40,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a93039f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:15:40, skipping insertion in model container [2024-06-20 18:15:40,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:15:39" (2/4) ... [2024-06-20 18:15:40,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a93039f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:15:40, skipping insertion in model container [2024-06-20 18:15:40,377 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 06:15:39" (3/4) ... [2024-06-20 18:15:40,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a93039f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:15:40, skipping insertion in model container [2024-06-20 18:15:40,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:15:40" (4/4) ... [2024-06-20 18:15:40,378 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2024-06-20 18:15:40,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 18:15:40,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 18:15:40,393 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 18:15:40,418 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 18:15:40,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2024-06-20 18:15:40,461 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-06-20 18:15:40,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:15:40,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 3/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-06-20 18:15:40,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2024-06-20 18:15:40,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 60 flow [2024-06-20 18:15:40,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 18:15:40,478 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;@71aa5839, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 18:15:40,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 18:15:40,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 18:15:40,482 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-06-20 18:15:40,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:15:40,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:40,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:40,484 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 18:15:40,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash 230814316, now seen corresponding path program 1 times [2024-06-20 18:15:40,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:40,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872835364] [2024-06-20 18:15:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:40,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:40,889 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 18:15:40,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:40,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872835364] [2024-06-20 18:15:40,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872835364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:40,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:40,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:15:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194287560] [2024-06-20 18:15:40,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:40,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:15:40,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:40,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:15:40,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:15:40,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:40,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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 18:15:40,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:40,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:40,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:41,082 INFO L124 PetriNetUnfolderBase]: 322/536 cut-off events. [2024-06-20 18:15:41,082 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-20 18:15:41,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 536 events. 322/536 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2105 event pairs, 53 based on Foata normal form. 21/506 useless extension candidates. Maximal degree in co-relation 1034. Up to 295 conditions per place. [2024-06-20 18:15:41,087 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 33 selfloop transitions, 8 changer transitions 12/56 dead transitions. [2024-06-20 18:15:41,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 225 flow [2024-06-20 18:15:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:15:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:15:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-20 18:15:41,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6137931034482759 [2024-06-20 18:15:41,098 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 5 states and 89 transitions. [2024-06-20 18:15:41,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 225 flow [2024-06-20 18:15:41,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:15:41,103 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 103 flow [2024-06-20 18:15:41,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-06-20 18:15:41,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-20 18:15:41,107 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 103 flow [2024-06-20 18:15:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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 18:15:41,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:41,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:41,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 18:15:41,108 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 18:15:41,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -52698492, now seen corresponding path program 1 times [2024-06-20 18:15:41,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:41,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438031596] [2024-06-20 18:15:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:41,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:41,343 INFO 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 18:15:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:41,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438031596] [2024-06-20 18:15:41,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438031596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:41,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:41,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 18:15:41,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634248341] [2024-06-20 18:15:41,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:41,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:15:41,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:41,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:15:41,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:15:41,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:41,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 103 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 18:15:41,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:41,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:41,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:41,507 INFO L124 PetriNetUnfolderBase]: 160/298 cut-off events. [2024-06-20 18:15:41,507 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-06-20 18:15:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 298 events. 160/298 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1096 event pairs, 13 based on Foata normal form. 10/308 useless extension candidates. Maximal degree in co-relation 762. Up to 115 conditions per place. [2024-06-20 18:15:41,510 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 41 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-20 18:15:41,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 56 transitions, 289 flow [2024-06-20 18:15:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 18:15:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 18:15:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-20 18:15:41,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-06-20 18:15:41,512 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 103 flow. Second operand 7 states and 98 transitions. [2024-06-20 18:15:41,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 56 transitions, 289 flow [2024-06-20 18:15:41,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-20 18:15:41,515 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 162 flow [2024-06-20 18:15:41,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-20 18:15:41,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-20 18:15:41,516 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 162 flow [2024-06-20 18:15:41,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 18:15:41,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:41,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:41,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 18:15:41,517 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 18:15:41,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:41,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1633652470, now seen corresponding path program 1 times [2024-06-20 18:15:41,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:41,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557168279] [2024-06-20 18:15:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:41,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:41,743 INFO 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 18:15:41,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:41,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557168279] [2024-06-20 18:15:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557168279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:41,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 18:15:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054033325] [2024-06-20 18:15:41,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:41,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 18:15:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 18:15:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-20 18:15:41,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:41,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:41,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:41,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:41,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:41,867 INFO L124 PetriNetUnfolderBase]: 145/273 cut-off events. [2024-06-20 18:15:41,867 INFO L125 PetriNetUnfolderBase]: For 304/308 co-relation queries the response was YES. [2024-06-20 18:15:41,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 273 events. 145/273 cut-off events. For 304/308 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 973 event pairs, 4 based on Foata normal form. 13/286 useless extension candidates. Maximal degree in co-relation 859. Up to 115 conditions per place. [2024-06-20 18:15:41,870 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 43 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-20 18:15:41,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 364 flow [2024-06-20 18:15:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 18:15:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 18:15:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-20 18:15:41,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45689655172413796 [2024-06-20 18:15:41,872 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 162 flow. Second operand 8 states and 106 transitions. [2024-06-20 18:15:41,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 364 flow [2024-06-20 18:15:41,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 344 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-20 18:15:41,875 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 174 flow [2024-06-20 18:15:41,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2024-06-20 18:15:41,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-20 18:15:41,876 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 174 flow [2024-06-20 18:15:41,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:41,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:41,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:41,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 18:15:41,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:15:41,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -659881598, now seen corresponding path program 1 times [2024-06-20 18:15:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:41,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704333941] [2024-06-20 18:15:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:41,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:42,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704333941] [2024-06-20 18:15:42,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704333941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:42,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:42,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 18:15:42,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629894450] [2024-06-20 18:15:42,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:15:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:15:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:15:42,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:42,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:42,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:42,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:42,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:42,145 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-20 18:15:42,146 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-20 18:15:42,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 315 events. 169/315 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1131 event pairs, 37 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 1054. Up to 179 conditions per place. [2024-06-20 18:15:42,148 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 35 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-20 18:15:42,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 346 flow [2024-06-20 18:15:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 18:15:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 18:15:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-20 18:15:42,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-20 18:15:42,150 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 174 flow. Second operand 7 states and 84 transitions. [2024-06-20 18:15:42,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 346 flow [2024-06-20 18:15:42,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 318 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-20 18:15:42,152 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 205 flow [2024-06-20 18:15:42,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-06-20 18:15:42,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-20 18:15:42,153 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 205 flow [2024-06-20 18:15:42,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:42,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:42,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:42,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 18:15:42,154 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 18:15:42,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1018507759, now seen corresponding path program 1 times [2024-06-20 18:15:42,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:42,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649068787] [2024-06-20 18:15:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:42,358 INFO 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 18:15:42,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649068787] [2024-06-20 18:15:42,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649068787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:42,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:42,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 18:15:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317800065] [2024-06-20 18:15:42,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:42,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 18:15:42,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 18:15:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-20 18:15:42,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:42,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 18:15:42,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:42,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:42,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:42,478 INFO L124 PetriNetUnfolderBase]: 151/288 cut-off events. [2024-06-20 18:15:42,479 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-06-20 18:15:42,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 288 events. 151/288 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 997 event pairs, 31 based on Foata normal form. 9/296 useless extension candidates. Maximal degree in co-relation 990. Up to 176 conditions per place. [2024-06-20 18:15:42,480 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 32 selfloop transitions, 11 changer transitions 2/48 dead transitions. [2024-06-20 18:15:42,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 347 flow [2024-06-20 18:15:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 18:15:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 18:15:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-20 18:15:42,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38362068965517243 [2024-06-20 18:15:42,482 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 205 flow. Second operand 8 states and 89 transitions. [2024-06-20 18:15:42,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 347 flow [2024-06-20 18:15:42,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 18:15:42,485 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 218 flow [2024-06-20 18:15:42,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2024-06-20 18:15:42,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-20 18:15:42,485 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 218 flow [2024-06-20 18:15:42,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 18:15:42,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:42,486 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 18:15:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 18:15:42,486 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 18:15:42,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash -732814132, now seen corresponding path program 1 times [2024-06-20 18:15:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:42,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937572816] [2024-06-20 18:15:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:42,693 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 18:15:42,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937572816] [2024-06-20 18:15:42,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937572816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:42,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:42,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 18:15:42,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338371576] [2024-06-20 18:15:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:42,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 18:15:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 18:15:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-20 18:15:42,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:42,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 218 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:42,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:42,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:42,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:42,807 INFO L124 PetriNetUnfolderBase]: 157/300 cut-off events. [2024-06-20 18:15:42,808 INFO L125 PetriNetUnfolderBase]: For 637/641 co-relation queries the response was YES. [2024-06-20 18:15:42,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 300 events. 157/300 cut-off events. For 637/641 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1045 event pairs, 31 based on Foata normal form. 5/305 useless extension candidates. Maximal degree in co-relation 1054. Up to 168 conditions per place. [2024-06-20 18:15:42,810 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 38 selfloop transitions, 17 changer transitions 1/59 dead transitions. [2024-06-20 18:15:42,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 419 flow [2024-06-20 18:15:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:15:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:15:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-20 18:15:42,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061302681992337 [2024-06-20 18:15:42,811 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 218 flow. Second operand 9 states and 106 transitions. [2024-06-20 18:15:42,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 419 flow [2024-06-20 18:15:42,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 391 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 18:15:42,813 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 266 flow [2024-06-20 18:15:42,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2024-06-20 18:15:42,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-20 18:15:42,814 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 266 flow [2024-06-20 18:15:42,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:42,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:42,815 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 18:15:42,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 18:15:42,815 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 18:15:42,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -640220558, now seen corresponding path program 2 times [2024-06-20 18:15:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:42,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538235760] [2024-06-20 18:15:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:43,023 INFO 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 18:15:43,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:43,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538235760] [2024-06-20 18:15:43,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538235760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:43,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:43,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 18:15:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151542565] [2024-06-20 18:15:43,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 18:15:43,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 18:15:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-20 18:15:43,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:43,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:43,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:43,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:43,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:43,132 INFO L124 PetriNetUnfolderBase]: 166/314 cut-off events. [2024-06-20 18:15:43,133 INFO L125 PetriNetUnfolderBase]: For 808/812 co-relation queries the response was YES. [2024-06-20 18:15:43,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 314 events. 166/314 cut-off events. For 808/812 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1125 event pairs, 34 based on Foata normal form. 7/320 useless extension candidates. Maximal degree in co-relation 1196. Up to 192 conditions per place. [2024-06-20 18:15:43,135 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 38 selfloop transitions, 17 changer transitions 1/59 dead transitions. [2024-06-20 18:15:43,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 482 flow [2024-06-20 18:15:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:15:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:15:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-20 18:15:43,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831417624521073 [2024-06-20 18:15:43,136 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 266 flow. Second operand 9 states and 100 transitions. [2024-06-20 18:15:43,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 482 flow [2024-06-20 18:15:43,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 441 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 18:15:43,139 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 344 flow [2024-06-20 18:15:43,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=344, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-20 18:15:43,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-20 18:15:43,140 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 344 flow [2024-06-20 18:15:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:43,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:43,140 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 18:15:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 18:15:43,141 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 18:15:43,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:43,141 INFO L85 PathProgramCache]: Analyzing trace with hash -834086502, now seen corresponding path program 3 times [2024-06-20 18:15:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:43,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105536484] [2024-06-20 18:15:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:43,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105536484] [2024-06-20 18:15:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105536484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:43,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 18:15:43,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449084149] [2024-06-20 18:15:43,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 18:15:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 18:15:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-20 18:15:43,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:43,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 344 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:43,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:43,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:43,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:43,475 INFO L124 PetriNetUnfolderBase]: 172/327 cut-off events. [2024-06-20 18:15:43,475 INFO L125 PetriNetUnfolderBase]: For 984/992 co-relation queries the response was YES. [2024-06-20 18:15:43,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 327 events. 172/327 cut-off events. For 984/992 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1198 event pairs, 31 based on Foata normal form. 9/336 useless extension candidates. Maximal degree in co-relation 1325. Up to 199 conditions per place. [2024-06-20 18:15:43,477 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 19 changer transitions 1/67 dead transitions. [2024-06-20 18:15:43,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 562 flow [2024-06-20 18:15:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:15:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:15:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-20 18:15:43,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2024-06-20 18:15:43,479 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 344 flow. Second operand 9 states and 102 transitions. [2024-06-20 18:15:43,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 562 flow [2024-06-20 18:15:43,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 535 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 18:15:43,482 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 417 flow [2024-06-20 18:15:43,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2024-06-20 18:15:43,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-20 18:15:43,483 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 417 flow [2024-06-20 18:15:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:43,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:43,484 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 18:15:43,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 18:15:43,484 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:15:43,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:43,485 INFO L85 PathProgramCache]: Analyzing trace with hash -639625912, now seen corresponding path program 4 times [2024-06-20 18:15:43,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:43,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730937691] [2024-06-20 18:15:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:43,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730937691] [2024-06-20 18:15:43,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730937691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:43,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:43,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 18:15:43,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564628864] [2024-06-20 18:15:43,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:43,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 18:15:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:43,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 18:15:43,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-20 18:15:43,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:43,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:43,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:43,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:43,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:43,815 INFO L124 PetriNetUnfolderBase]: 178/339 cut-off events. [2024-06-20 18:15:43,815 INFO L125 PetriNetUnfolderBase]: For 1234/1238 co-relation queries the response was YES. [2024-06-20 18:15:43,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 339 events. 178/339 cut-off events. For 1234/1238 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1254 event pairs, 29 based on Foata normal form. 7/346 useless extension candidates. Maximal degree in co-relation 1464. Up to 209 conditions per place. [2024-06-20 18:15:43,833 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 48 selfloop transitions, 19 changer transitions 1/71 dead transitions. [2024-06-20 18:15:43,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 647 flow [2024-06-20 18:15:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:15:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:15:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 18:15:43,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-20 18:15:43,834 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 417 flow. Second operand 9 states and 103 transitions. [2024-06-20 18:15:43,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 647 flow [2024-06-20 18:15:43,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 605 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 18:15:43,839 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 471 flow [2024-06-20 18:15:43,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=471, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-20 18:15:43,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-20 18:15:43,840 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 471 flow [2024-06-20 18:15:43,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:43,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:43,840 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 18:15:43,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 18:15:43,840 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 18:15:43,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash -644982158, now seen corresponding path program 5 times [2024-06-20 18:15:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173673467] [2024-06-20 18:15:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:43,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:44,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:44,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173673467] [2024-06-20 18:15:44,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173673467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:44,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:44,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 18:15:44,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995719710] [2024-06-20 18:15:44,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:44,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 18:15:44,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:44,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 18:15:44,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-20 18:15:44,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:44,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 471 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:44,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:44,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:44,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:44,332 INFO L124 PetriNetUnfolderBase]: 181/341 cut-off events. [2024-06-20 18:15:44,332 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2024-06-20 18:15:44,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 341 events. 181/341 cut-off events. For 1490/1490 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1256 event pairs, 32 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1568. Up to 211 conditions per place. [2024-06-20 18:15:44,335 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 47 selfloop transitions, 20 changer transitions 1/71 dead transitions. [2024-06-20 18:15:44,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 687 flow [2024-06-20 18:15:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:15:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:15:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-20 18:15:44,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-20 18:15:44,336 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 471 flow. Second operand 9 states and 99 transitions. [2024-06-20 18:15:44,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 687 flow [2024-06-20 18:15:44,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 647 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-20 18:15:44,341 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 519 flow [2024-06-20 18:15:44,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=519, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2024-06-20 18:15:44,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-20 18:15:44,346 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 519 flow [2024-06-20 18:15:44,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:44,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:44,347 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 18:15:44,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 18:15:44,348 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 18:15:44,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash -466836938, now seen corresponding path program 6 times [2024-06-20 18:15:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419238593] [2024-06-20 18:15:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:44,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:44,548 INFO 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 18:15:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:44,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419238593] [2024-06-20 18:15:44,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419238593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:44,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:44,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 18:15:44,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641554578] [2024-06-20 18:15:44,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:44,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 18:15:44,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 18:15:44,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-20 18:15:44,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:44,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:44,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:44,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:44,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:44,676 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-20 18:15:44,677 INFO L125 PetriNetUnfolderBase]: For 1750/1754 co-relation queries the response was YES. [2024-06-20 18:15:44,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 340 events. 181/340 cut-off events. For 1750/1754 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1269 event pairs, 35 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 1621. Up to 219 conditions per place. [2024-06-20 18:15:44,679 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 49 selfloop transitions, 22 changer transitions 1/75 dead transitions. [2024-06-20 18:15:44,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 755 flow [2024-06-20 18:15:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:15:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:15:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-20 18:15:44,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38697318007662834 [2024-06-20 18:15:44,681 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 519 flow. Second operand 9 states and 101 transitions. [2024-06-20 18:15:44,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 755 flow [2024-06-20 18:15:44,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 699 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 18:15:44,686 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 578 flow [2024-06-20 18:15:44,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-06-20 18:15:44,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-20 18:15:44,687 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 578 flow [2024-06-20 18:15:44,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:44,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:44,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:44,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 18:15:44,687 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 18:15:44,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1467999858, now seen corresponding path program 1 times [2024-06-20 18:15:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:44,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400579887] [2024-06-20 18:15:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:44,947 INFO 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 18:15:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:44,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400579887] [2024-06-20 18:15:44,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400579887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:44,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:44,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628083494] [2024-06-20 18:15:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:44,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:44,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:44,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:44,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:44,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:44,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:45,126 INFO L124 PetriNetUnfolderBase]: 199/376 cut-off events. [2024-06-20 18:15:45,126 INFO L125 PetriNetUnfolderBase]: For 2368/2372 co-relation queries the response was YES. [2024-06-20 18:15:45,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 376 events. 199/376 cut-off events. For 2368/2372 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1478 event pairs, 11 based on Foata normal form. 7/383 useless extension candidates. Maximal degree in co-relation 1892. Up to 157 conditions per place. [2024-06-20 18:15:45,129 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 63 selfloop transitions, 26 changer transitions 1/93 dead transitions. [2024-06-20 18:15:45,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 952 flow [2024-06-20 18:15:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 18:15:45,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-20 18:15:45,145 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 578 flow. Second operand 10 states and 121 transitions. [2024-06-20 18:15:45,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 952 flow [2024-06-20 18:15:45,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 93 transitions, 869 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:45,153 INFO L231 Difference]: Finished difference. Result has 84 places, 64 transitions, 579 flow [2024-06-20 18:15:45,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=579, PETRI_PLACES=84, PETRI_TRANSITIONS=64} [2024-06-20 18:15:45,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-20 18:15:45,154 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 64 transitions, 579 flow [2024-06-20 18:15:45,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:45,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:45,155 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 18:15:45,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 18:15:45,155 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 18:15:45,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1992088830, now seen corresponding path program 2 times [2024-06-20 18:15:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:45,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946631142] [2024-06-20 18:15:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:45,389 INFO 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 18:15:45,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:45,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946631142] [2024-06-20 18:15:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946631142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:45,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:45,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:45,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434582706] [2024-06-20 18:15:45,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:45,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:45,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:45,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:45,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 64 transitions, 579 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:45,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:45,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:45,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:45,609 INFO L124 PetriNetUnfolderBase]: 217/410 cut-off events. [2024-06-20 18:15:45,609 INFO L125 PetriNetUnfolderBase]: For 2951/2955 co-relation queries the response was YES. [2024-06-20 18:15:45,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 410 events. 217/410 cut-off events. For 2951/2955 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1701 event pairs, 30 based on Foata normal form. 7/417 useless extension candidates. Maximal degree in co-relation 2117. Up to 238 conditions per place. [2024-06-20 18:15:45,612 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 63 selfloop transitions, 25 changer transitions 1/92 dead transitions. [2024-06-20 18:15:45,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 921 flow [2024-06-20 18:15:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 18:15:45,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-06-20 18:15:45,614 INFO L175 Difference]: Start difference. First operand has 84 places, 64 transitions, 579 flow. Second operand 10 states and 119 transitions. [2024-06-20 18:15:45,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 921 flow [2024-06-20 18:15:45,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 854 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:45,620 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 602 flow [2024-06-20 18:15:45,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=602, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-06-20 18:15:45,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-20 18:15:45,621 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 602 flow [2024-06-20 18:15:45,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:45,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:45,621 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 18:15:45,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 18:15:45,621 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 18:15:45,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1992085110, now seen corresponding path program 3 times [2024-06-20 18:15:45,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:45,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376789796] [2024-06-20 18:15:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:45,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:45,871 INFO 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 18:15:45,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376789796] [2024-06-20 18:15:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376789796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:45,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:45,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:45,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726130309] [2024-06-20 18:15:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:45,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:45,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 602 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:45,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:45,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:45,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:46,046 INFO L124 PetriNetUnfolderBase]: 226/425 cut-off events. [2024-06-20 18:15:46,047 INFO L125 PetriNetUnfolderBase]: For 3312/3316 co-relation queries the response was YES. [2024-06-20 18:15:46,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 425 events. 226/425 cut-off events. For 3312/3316 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1753 event pairs, 38 based on Foata normal form. 7/432 useless extension candidates. Maximal degree in co-relation 2234. Up to 265 conditions per place. [2024-06-20 18:15:46,050 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 60 selfloop transitions, 26 changer transitions 1/90 dead transitions. [2024-06-20 18:15:46,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 897 flow [2024-06-20 18:15:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 18:15:46,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40344827586206894 [2024-06-20 18:15:46,051 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 602 flow. Second operand 10 states and 117 transitions. [2024-06-20 18:15:46,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 897 flow [2024-06-20 18:15:46,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 849 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 18:15:46,057 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 633 flow [2024-06-20 18:15:46,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-06-20 18:15:46,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-20 18:15:46,058 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 633 flow [2024-06-20 18:15:46,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:46,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:46,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:46,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 18:15:46,059 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 18:15:46,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1992084955, now seen corresponding path program 1 times [2024-06-20 18:15:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:46,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470594882] [2024-06-20 18:15:46,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:46,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:46,320 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 18:15:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:46,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470594882] [2024-06-20 18:15:46,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470594882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:46,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:46,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469070692] [2024-06-20 18:15:46,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:46,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:46,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:46,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 633 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:46,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:46,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:46,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:46,563 INFO L124 PetriNetUnfolderBase]: 235/444 cut-off events. [2024-06-20 18:15:46,563 INFO L125 PetriNetUnfolderBase]: For 3796/3796 co-relation queries the response was YES. [2024-06-20 18:15:46,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 444 events. 235/444 cut-off events. For 3796/3796 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1880 event pairs, 34 based on Foata normal form. 3/447 useless extension candidates. Maximal degree in co-relation 2349. Up to 280 conditions per place. [2024-06-20 18:15:46,583 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 61 selfloop transitions, 26 changer transitions 1/91 dead transitions. [2024-06-20 18:15:46,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 909 flow [2024-06-20 18:15:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 18:15:46,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40344827586206894 [2024-06-20 18:15:46,584 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 633 flow. Second operand 10 states and 117 transitions. [2024-06-20 18:15:46,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 909 flow [2024-06-20 18:15:46,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 855 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:46,591 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 653 flow [2024-06-20 18:15:46,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2024-06-20 18:15:46,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-20 18:15:46,591 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 653 flow [2024-06-20 18:15:46,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:46,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:46,591 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 18:15:46,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 18:15:46,592 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 18:15:46,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1498824425, now seen corresponding path program 2 times [2024-06-20 18:15:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609678170] [2024-06-20 18:15:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:46,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:46,878 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 18:15:46,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609678170] [2024-06-20 18:15:46,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609678170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:46,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:46,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:46,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793382439] [2024-06-20 18:15:46,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:46,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:46,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:46,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:46,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 653 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:46,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:46,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:46,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:47,068 INFO L124 PetriNetUnfolderBase]: 244/459 cut-off events. [2024-06-20 18:15:47,068 INFO L125 PetriNetUnfolderBase]: For 4098/4098 co-relation queries the response was YES. [2024-06-20 18:15:47,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2531 conditions, 459 events. 244/459 cut-off events. For 4098/4098 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1947 event pairs, 38 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2476. Up to 310 conditions per place. [2024-06-20 18:15:47,072 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 21 changer transitions 1/89 dead transitions. [2024-06-20 18:15:47,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 919 flow [2024-06-20 18:15:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 18:15:47,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-20 18:15:47,085 INFO L175 Difference]: Start difference. First operand has 91 places, 68 transitions, 653 flow. Second operand 10 states and 113 transitions. [2024-06-20 18:15:47,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 919 flow [2024-06-20 18:15:47,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 857 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:47,095 INFO L231 Difference]: Finished difference. Result has 93 places, 69 transitions, 657 flow [2024-06-20 18:15:47,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=657, PETRI_PLACES=93, PETRI_TRANSITIONS=69} [2024-06-20 18:15:47,095 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-20 18:15:47,095 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 69 transitions, 657 flow [2024-06-20 18:15:47,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:47,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:47,096 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 18:15:47,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 18:15:47,096 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 18:15:47,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1640029890, now seen corresponding path program 4 times [2024-06-20 18:15:47,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:47,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27923583] [2024-06-20 18:15:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:47,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:47,386 INFO 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 18:15:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27923583] [2024-06-20 18:15:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27923583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:47,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:47,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128452501] [2024-06-20 18:15:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:47,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:47,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:47,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 69 transitions, 657 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:47,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:47,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:47,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:47,570 INFO L124 PetriNetUnfolderBase]: 262/491 cut-off events. [2024-06-20 18:15:47,570 INFO L125 PetriNetUnfolderBase]: For 4948/4952 co-relation queries the response was YES. [2024-06-20 18:15:47,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2754 conditions, 491 events. 262/491 cut-off events. For 4948/4952 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2140 event pairs, 32 based on Foata normal form. 7/498 useless extension candidates. Maximal degree in co-relation 2698. Up to 328 conditions per place. [2024-06-20 18:15:47,575 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 70 selfloop transitions, 20 changer transitions 1/94 dead transitions. [2024-06-20 18:15:47,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 94 transitions, 1007 flow [2024-06-20 18:15:47,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-20 18:15:47,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-20 18:15:47,576 INFO L175 Difference]: Start difference. First operand has 93 places, 69 transitions, 657 flow. Second operand 10 states and 115 transitions. [2024-06-20 18:15:47,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 94 transitions, 1007 flow [2024-06-20 18:15:47,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 953 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:47,586 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 687 flow [2024-06-20 18:15:47,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=687, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-06-20 18:15:47,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-20 18:15:47,587 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 687 flow [2024-06-20 18:15:47,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:47,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:47,588 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 18:15:47,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 18:15:47,588 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 18:15:47,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1498824270, now seen corresponding path program 5 times [2024-06-20 18:15:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855800254] [2024-06-20 18:15:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:47,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:47,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855800254] [2024-06-20 18:15:47,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855800254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:47,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:47,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:47,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200348356] [2024-06-20 18:15:47,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:47,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:47,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:47,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:47,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:47,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 687 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:47,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:47,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:47,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:48,012 INFO L124 PetriNetUnfolderBase]: 271/508 cut-off events. [2024-06-20 18:15:48,012 INFO L125 PetriNetUnfolderBase]: For 5670/5674 co-relation queries the response was YES. [2024-06-20 18:15:48,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 508 events. 271/508 cut-off events. For 5670/5674 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2250 event pairs, 36 based on Foata normal form. 7/515 useless extension candidates. Maximal degree in co-relation 2835. Up to 355 conditions per place. [2024-06-20 18:15:48,017 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 67 selfloop transitions, 21 changer transitions 1/92 dead transitions. [2024-06-20 18:15:48,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 986 flow [2024-06-20 18:15:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 18:15:48,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-20 18:15:48,018 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 687 flow. Second operand 10 states and 113 transitions. [2024-06-20 18:15:48,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 986 flow [2024-06-20 18:15:48,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 942 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 18:15:48,029 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 716 flow [2024-06-20 18:15:48,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=716, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2024-06-20 18:15:48,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-20 18:15:48,031 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 716 flow [2024-06-20 18:15:48,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:48,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:48,031 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 18:15:48,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 18:15:48,031 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 18:15:48,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1646670245, now seen corresponding path program 3 times [2024-06-20 18:15:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953825268] [2024-06-20 18:15:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:48,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:48,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953825268] [2024-06-20 18:15:48,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953825268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:48,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:48,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:48,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182983808] [2024-06-20 18:15:48,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:48,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:48,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:48,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:48,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:48,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:48,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:48,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:48,477 INFO L124 PetriNetUnfolderBase]: 289/542 cut-off events. [2024-06-20 18:15:48,478 INFO L125 PetriNetUnfolderBase]: For 6153/6157 co-relation queries the response was YES. [2024-06-20 18:15:48,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3069 conditions, 542 events. 289/542 cut-off events. For 6153/6157 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2473 event pairs, 38 based on Foata normal form. 13/555 useless extension candidates. Maximal degree in co-relation 3010. Up to 378 conditions per place. [2024-06-20 18:15:48,482 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 74 selfloop transitions, 19 changer transitions 1/97 dead transitions. [2024-06-20 18:15:48,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 1027 flow [2024-06-20 18:15:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 18:15:48,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 18:15:48,483 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 716 flow. Second operand 10 states and 116 transitions. [2024-06-20 18:15:48,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 1027 flow [2024-06-20 18:15:48,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 977 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:48,496 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 743 flow [2024-06-20 18:15:48,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=743, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2024-06-20 18:15:48,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-20 18:15:48,497 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 743 flow [2024-06-20 18:15:48,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:48,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:48,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:48,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 18:15:48,497 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 18:15:48,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1646433870, now seen corresponding path program 6 times [2024-06-20 18:15:48,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:48,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668856014] [2024-06-20 18:15:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:48,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:48,712 INFO 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 18:15:48,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:48,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668856014] [2024-06-20 18:15:48,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668856014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:48,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:48,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57306572] [2024-06-20 18:15:48,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:48,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:48,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:48,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:48,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 743 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:48,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:48,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:48,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:48,903 INFO L124 PetriNetUnfolderBase]: 298/559 cut-off events. [2024-06-20 18:15:48,903 INFO L125 PetriNetUnfolderBase]: For 7239/7243 co-relation queries the response was YES. [2024-06-20 18:15:48,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 559 events. 298/559 cut-off events. For 7239/7243 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2591 event pairs, 38 based on Foata normal form. 7/566 useless extension candidates. Maximal degree in co-relation 3228. Up to 394 conditions per place. [2024-06-20 18:15:48,908 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 70 selfloop transitions, 21 changer transitions 1/95 dead transitions. [2024-06-20 18:15:48,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 95 transitions, 1056 flow [2024-06-20 18:15:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 18:15:48,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-20 18:15:48,910 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 743 flow. Second operand 10 states and 113 transitions. [2024-06-20 18:15:48,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 95 transitions, 1056 flow [2024-06-20 18:15:48,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 95 transitions, 1013 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-20 18:15:48,925 INFO L231 Difference]: Finished difference. Result has 106 places, 75 transitions, 775 flow [2024-06-20 18:15:48,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=775, PETRI_PLACES=106, PETRI_TRANSITIONS=75} [2024-06-20 18:15:48,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-20 18:15:48,926 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 75 transitions, 775 flow [2024-06-20 18:15:48,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:48,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:48,927 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 18:15:48,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 18:15:48,927 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 18:15:48,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1933848355, now seen corresponding path program 4 times [2024-06-20 18:15:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:48,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660825956] [2024-06-20 18:15:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:48,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:49,188 INFO 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 18:15:49,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:49,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660825956] [2024-06-20 18:15:49,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660825956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:49,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:49,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:49,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908733883] [2024-06-20 18:15:49,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:49,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:49,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:49,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:49,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:49,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:49,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 75 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:49,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:49,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:49,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:49,373 INFO L124 PetriNetUnfolderBase]: 307/574 cut-off events. [2024-06-20 18:15:49,373 INFO L125 PetriNetUnfolderBase]: For 7631/7631 co-relation queries the response was YES. [2024-06-20 18:15:49,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 574 events. 307/574 cut-off events. For 7631/7631 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2662 event pairs, 36 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 3325. Up to 409 conditions per place. [2024-06-20 18:15:49,377 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 21 changer transitions 1/96 dead transitions. [2024-06-20 18:15:49,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 96 transitions, 1061 flow [2024-06-20 18:15:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 18:15:49,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-20 18:15:49,378 INFO L175 Difference]: Start difference. First operand has 106 places, 75 transitions, 775 flow. Second operand 10 states and 113 transitions. [2024-06-20 18:15:49,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 96 transitions, 1061 flow [2024-06-20 18:15:49,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 1011 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:49,394 INFO L231 Difference]: Finished difference. Result has 108 places, 76 transitions, 795 flow [2024-06-20 18:15:49,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=795, PETRI_PLACES=108, PETRI_TRANSITIONS=76} [2024-06-20 18:15:49,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-20 18:15:49,395 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 76 transitions, 795 flow [2024-06-20 18:15:49,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:49,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:49,395 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 18:15:49,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 18:15:49,396 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 18:15:49,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1808451193, now seen corresponding path program 5 times [2024-06-20 18:15:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508672840] [2024-06-20 18:15:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:49,637 INFO 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 18:15:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508672840] [2024-06-20 18:15:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508672840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:49,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417995628] [2024-06-20 18:15:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:49,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:49,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:49,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:49,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:49,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:49,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 76 transitions, 795 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:49,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:49,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:49,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:49,839 INFO L124 PetriNetUnfolderBase]: 325/606 cut-off events. [2024-06-20 18:15:49,839 INFO L125 PetriNetUnfolderBase]: For 8497/8497 co-relation queries the response was YES. [2024-06-20 18:15:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3592 conditions, 606 events. 325/606 cut-off events. For 8497/8497 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2873 event pairs, 45 based on Foata normal form. 9/614 useless extension candidates. Maximal degree in co-relation 3528. Up to 429 conditions per place. [2024-06-20 18:15:49,846 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 74 selfloop transitions, 20 changer transitions 1/98 dead transitions. [2024-06-20 18:15:49,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 98 transitions, 1107 flow [2024-06-20 18:15:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 18:15:49,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-20 18:15:49,848 INFO L175 Difference]: Start difference. First operand has 108 places, 76 transitions, 795 flow. Second operand 10 states and 113 transitions. [2024-06-20 18:15:49,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 98 transitions, 1107 flow [2024-06-20 18:15:49,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 98 transitions, 1047 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:49,862 INFO L231 Difference]: Finished difference. Result has 111 places, 78 transitions, 819 flow [2024-06-20 18:15:49,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=819, PETRI_PLACES=111, PETRI_TRANSITIONS=78} [2024-06-20 18:15:49,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-20 18:15:49,863 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 78 transitions, 819 flow [2024-06-20 18:15:49,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:49,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:49,863 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 18:15:49,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 18:15:49,864 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 18:15:49,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1808687413, now seen corresponding path program 6 times [2024-06-20 18:15:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:49,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749829106] [2024-06-20 18:15:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:50,098 INFO 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 18:15:50,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:50,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749829106] [2024-06-20 18:15:50,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749829106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:50,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:50,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:50,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646266490] [2024-06-20 18:15:50,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:50,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:50,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:50,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:50,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:50,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 78 transitions, 819 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:50,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:50,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:50,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:50,285 INFO L124 PetriNetUnfolderBase]: 334/623 cut-off events. [2024-06-20 18:15:50,286 INFO L125 PetriNetUnfolderBase]: For 9449/9449 co-relation queries the response was YES. [2024-06-20 18:15:50,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3755 conditions, 623 events. 334/623 cut-off events. For 9449/9449 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2991 event pairs, 45 based on Foata normal form. 3/625 useless extension candidates. Maximal degree in co-relation 3689. Up to 445 conditions per place. [2024-06-20 18:15:50,290 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 70 selfloop transitions, 22 changer transitions 1/96 dead transitions. [2024-06-20 18:15:50,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 96 transitions, 1103 flow [2024-06-20 18:15:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 18:15:50,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-20 18:15:50,292 INFO L175 Difference]: Start difference. First operand has 111 places, 78 transitions, 819 flow. Second operand 10 states and 110 transitions. [2024-06-20 18:15:50,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 96 transitions, 1103 flow [2024-06-20 18:15:50,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 96 transitions, 1055 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-20 18:15:50,309 INFO L231 Difference]: Finished difference. Result has 115 places, 79 transitions, 847 flow [2024-06-20 18:15:50,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=847, PETRI_PLACES=115, PETRI_TRANSITIONS=79} [2024-06-20 18:15:50,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-20 18:15:50,310 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 79 transitions, 847 flow [2024-06-20 18:15:50,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:50,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:50,310 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 18:15:50,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 18:15:50,310 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 18:15:50,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1808687568, now seen corresponding path program 7 times [2024-06-20 18:15:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:50,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275139773] [2024-06-20 18:15:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:50,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:50,528 INFO 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 18:15:50,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275139773] [2024-06-20 18:15:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275139773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:50,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205404642] [2024-06-20 18:15:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:50,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:50,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:50,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 79 transitions, 847 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:50,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:50,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:50,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:50,737 INFO L124 PetriNetUnfolderBase]: 343/638 cut-off events. [2024-06-20 18:15:50,737 INFO L125 PetriNetUnfolderBase]: For 10520/10524 co-relation queries the response was YES. [2024-06-20 18:15:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3926 conditions, 638 events. 343/638 cut-off events. For 10520/10524 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3058 event pairs, 49 based on Foata normal form. 7/644 useless extension candidates. Maximal degree in co-relation 3858. Up to 460 conditions per place. [2024-06-20 18:15:50,743 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 22 changer transitions 1/97 dead transitions. [2024-06-20 18:15:50,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 97 transitions, 1168 flow [2024-06-20 18:15:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 18:15:50,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-20 18:15:50,744 INFO L175 Difference]: Start difference. First operand has 115 places, 79 transitions, 847 flow. Second operand 10 states and 110 transitions. [2024-06-20 18:15:50,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 97 transitions, 1168 flow [2024-06-20 18:15:50,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 97 transitions, 1104 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:50,761 INFO L231 Difference]: Finished difference. Result has 117 places, 80 transitions, 862 flow [2024-06-20 18:15:50,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=80} [2024-06-20 18:15:50,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-20 18:15:50,762 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 80 transitions, 862 flow [2024-06-20 18:15:50,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:50,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:50,762 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 18:15:50,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 18:15:50,762 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 18:15:50,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1480328864, now seen corresponding path program 8 times [2024-06-20 18:15:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761085416] [2024-06-20 18:15:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:50,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:50,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761085416] [2024-06-20 18:15:50,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761085416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:50,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:50,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118851128] [2024-06-20 18:15:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:50,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:50,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:50,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:50,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:51,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:51,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 80 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:51,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:51,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:51,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:51,198 INFO L124 PetriNetUnfolderBase]: 352/655 cut-off events. [2024-06-20 18:15:51,198 INFO L125 PetriNetUnfolderBase]: For 11310/11314 co-relation queries the response was YES. [2024-06-20 18:15:51,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 655 events. 352/655 cut-off events. For 11310/11314 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3164 event pairs, 45 based on Foata normal form. 7/661 useless extension candidates. Maximal degree in co-relation 3987. Up to 460 conditions per place. [2024-06-20 18:15:51,219 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 75 selfloop transitions, 22 changer transitions 1/101 dead transitions. [2024-06-20 18:15:51,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 101 transitions, 1243 flow [2024-06-20 18:15:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 18:15:51,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38620689655172413 [2024-06-20 18:15:51,221 INFO L175 Difference]: Start difference. First operand has 117 places, 80 transitions, 862 flow. Second operand 10 states and 112 transitions. [2024-06-20 18:15:51,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 101 transitions, 1243 flow [2024-06-20 18:15:51,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 101 transitions, 1189 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:51,263 INFO L231 Difference]: Finished difference. Result has 119 places, 81 transitions, 889 flow [2024-06-20 18:15:51,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=889, PETRI_PLACES=119, PETRI_TRANSITIONS=81} [2024-06-20 18:15:51,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-20 18:15:51,263 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 81 transitions, 889 flow [2024-06-20 18:15:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:51,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:51,263 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 18:15:51,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 18:15:51,264 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 18:15:51,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1480390399, now seen corresponding path program 7 times [2024-06-20 18:15:51,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:51,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135037314] [2024-06-20 18:15:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:51,516 INFO 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 18:15:51,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:51,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135037314] [2024-06-20 18:15:51,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135037314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:51,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:51,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:51,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115565743] [2024-06-20 18:15:51,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:51,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:51,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:51,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:51,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:51,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 81 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:51,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:51,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:51,707 INFO L124 PetriNetUnfolderBase]: 361/670 cut-off events. [2024-06-20 18:15:51,708 INFO L125 PetriNetUnfolderBase]: For 11956/11960 co-relation queries the response was YES. [2024-06-20 18:15:51,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4174 conditions, 670 events. 361/670 cut-off events. For 11956/11960 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3266 event pairs, 47 based on Foata normal form. 7/676 useless extension candidates. Maximal degree in co-relation 4104. Up to 487 conditions per place. [2024-06-20 18:15:51,716 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 23 changer transitions 1/99 dead transitions. [2024-06-20 18:15:51,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 99 transitions, 1181 flow [2024-06-20 18:15:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 18:15:51,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-20 18:15:51,718 INFO L175 Difference]: Start difference. First operand has 119 places, 81 transitions, 889 flow. Second operand 10 states and 110 transitions. [2024-06-20 18:15:51,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 99 transitions, 1181 flow [2024-06-20 18:15:51,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 99 transitions, 1119 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:51,740 INFO L231 Difference]: Finished difference. Result has 120 places, 82 transitions, 907 flow [2024-06-20 18:15:51,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=120, PETRI_TRANSITIONS=82} [2024-06-20 18:15:51,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-20 18:15:51,741 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 82 transitions, 907 flow [2024-06-20 18:15:51,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:51,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:51,742 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 18:15:51,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 18:15:51,742 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 18:15:51,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1815087828, now seen corresponding path program 9 times [2024-06-20 18:15:51,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:51,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635085132] [2024-06-20 18:15:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:51,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:51,964 INFO 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 18:15:51,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:51,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635085132] [2024-06-20 18:15:51,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635085132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:51,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:51,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:51,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977918725] [2024-06-20 18:15:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:51,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:52,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:52,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 82 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:52,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:52,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:52,135 INFO L124 PetriNetUnfolderBase]: 370/687 cut-off events. [2024-06-20 18:15:52,136 INFO L125 PetriNetUnfolderBase]: For 13355/13355 co-relation queries the response was YES. [2024-06-20 18:15:52,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 687 events. 370/687 cut-off events. For 13355/13355 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3386 event pairs, 47 based on Foata normal form. 3/689 useless extension candidates. Maximal degree in co-relation 4277. Up to 502 conditions per place. [2024-06-20 18:15:52,141 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 73 selfloop transitions, 23 changer transitions 1/100 dead transitions. [2024-06-20 18:15:52,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 100 transitions, 1240 flow [2024-06-20 18:15:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 18:15:52,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-20 18:15:52,142 INFO L175 Difference]: Start difference. First operand has 120 places, 82 transitions, 907 flow. Second operand 10 states and 110 transitions. [2024-06-20 18:15:52,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 100 transitions, 1240 flow [2024-06-20 18:15:52,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 100 transitions, 1172 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:52,163 INFO L231 Difference]: Finished difference. Result has 122 places, 83 transitions, 924 flow [2024-06-20 18:15:52,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=924, PETRI_PLACES=122, PETRI_TRANSITIONS=83} [2024-06-20 18:15:52,164 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-20 18:15:52,164 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 83 transitions, 924 flow [2024-06-20 18:15:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:52,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:52,164 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 18:15:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 18:15:52,165 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 18:15:52,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1578762583, now seen corresponding path program 8 times [2024-06-20 18:15:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126888645] [2024-06-20 18:15:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:52,388 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 18:15:52,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:52,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126888645] [2024-06-20 18:15:52,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126888645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:52,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:52,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:52,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107397465] [2024-06-20 18:15:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:52,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:52,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:52,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:52,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 83 transitions, 924 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:52,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:52,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:52,615 INFO L124 PetriNetUnfolderBase]: 388/721 cut-off events. [2024-06-20 18:15:52,616 INFO L125 PetriNetUnfolderBase]: For 13987/13987 co-relation queries the response was YES. [2024-06-20 18:15:52,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 721 events. 388/721 cut-off events. For 13987/13987 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3616 event pairs, 43 based on Foata normal form. 9/729 useless extension candidates. Maximal degree in co-relation 4430. Up to 525 conditions per place. [2024-06-20 18:15:52,622 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 76 selfloop transitions, 24 changer transitions 1/104 dead transitions. [2024-06-20 18:15:52,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 104 transitions, 1255 flow [2024-06-20 18:15:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 18:15:52,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38275862068965516 [2024-06-20 18:15:52,623 INFO L175 Difference]: Start difference. First operand has 122 places, 83 transitions, 924 flow. Second operand 10 states and 111 transitions. [2024-06-20 18:15:52,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 104 transitions, 1255 flow [2024-06-20 18:15:52,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 104 transitions, 1193 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:52,651 INFO L231 Difference]: Finished difference. Result has 125 places, 85 transitions, 961 flow [2024-06-20 18:15:52,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=961, PETRI_PLACES=125, PETRI_TRANSITIONS=85} [2024-06-20 18:15:52,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-20 18:15:52,651 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 85 transitions, 961 flow [2024-06-20 18:15:52,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:52,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:52,652 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 18:15:52,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 18:15:52,652 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 18:15:52,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1586806153, now seen corresponding path program 9 times [2024-06-20 18:15:52,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:52,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942382066] [2024-06-20 18:15:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:52,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:52,890 INFO 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 18:15:52,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:52,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942382066] [2024-06-20 18:15:52,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942382066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:52,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:52,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715022405] [2024-06-20 18:15:52,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:52,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:52,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:52,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:52,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:52,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 85 transitions, 961 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:52,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:52,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:52,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:53,082 INFO L124 PetriNetUnfolderBase]: 388/723 cut-off events. [2024-06-20 18:15:53,083 INFO L125 PetriNetUnfolderBase]: For 15345/15349 co-relation queries the response was YES. [2024-06-20 18:15:53,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 723 events. 388/723 cut-off events. For 15345/15349 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3626 event pairs, 45 based on Foata normal form. 9/731 useless extension candidates. Maximal degree in co-relation 4554. Up to 540 conditions per place. [2024-06-20 18:15:53,087 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 78 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2024-06-20 18:15:53,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 1273 flow [2024-06-20 18:15:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 18:15:53,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-20 18:15:53,088 INFO L175 Difference]: Start difference. First operand has 125 places, 85 transitions, 961 flow. Second operand 10 states and 113 transitions. [2024-06-20 18:15:53,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 1273 flow [2024-06-20 18:15:53,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 105 transitions, 1186 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:53,116 INFO L231 Difference]: Finished difference. Result has 127 places, 86 transitions, 964 flow [2024-06-20 18:15:53,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=964, PETRI_PLACES=127, PETRI_TRANSITIONS=86} [2024-06-20 18:15:53,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-20 18:15:53,117 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 86 transitions, 964 flow [2024-06-20 18:15:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:53,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:53,117 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 18:15:53,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 18:15:53,117 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 18:15:53,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1587042373, now seen corresponding path program 10 times [2024-06-20 18:15:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509679484] [2024-06-20 18:15:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:53,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:53,308 INFO 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 18:15:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:53,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509679484] [2024-06-20 18:15:53,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509679484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:53,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:53,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:53,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032628536] [2024-06-20 18:15:53,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:53,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:53,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:53,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 86 transitions, 964 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:53,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:53,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:53,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:53,497 INFO L124 PetriNetUnfolderBase]: 397/738 cut-off events. [2024-06-20 18:15:53,497 INFO L125 PetriNetUnfolderBase]: For 16408/16412 co-relation queries the response was YES. [2024-06-20 18:15:53,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 738 events. 397/738 cut-off events. For 16408/16412 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3699 event pairs, 54 based on Foata normal form. 3/740 useless extension candidates. Maximal degree in co-relation 4699. Up to 556 conditions per place. [2024-06-20 18:15:53,501 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-06-20 18:15:53,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 103 transitions, 1256 flow [2024-06-20 18:15:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 18:15:53,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-20 18:15:53,502 INFO L175 Difference]: Start difference. First operand has 127 places, 86 transitions, 964 flow. Second operand 10 states and 110 transitions. [2024-06-20 18:15:53,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 103 transitions, 1256 flow [2024-06-20 18:15:53,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 103 transitions, 1166 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:53,532 INFO L231 Difference]: Finished difference. Result has 128 places, 87 transitions, 966 flow [2024-06-20 18:15:53,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=966, PETRI_PLACES=128, PETRI_TRANSITIONS=87} [2024-06-20 18:15:53,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-20 18:15:53,532 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 87 transitions, 966 flow [2024-06-20 18:15:53,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:53,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:53,533 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 18:15:53,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 18:15:53,533 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 18:15:53,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1587042528, now seen corresponding path program 10 times [2024-06-20 18:15:53,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:53,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018125313] [2024-06-20 18:15:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:53,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:53,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:53,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018125313] [2024-06-20 18:15:53,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018125313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:53,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:53,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 18:15:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637812969] [2024-06-20 18:15:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:53,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 18:15:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 18:15:53,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-20 18:15:53,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 87 transitions, 966 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:53,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:53,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:53,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:53,867 INFO L124 PetriNetUnfolderBase]: 391/729 cut-off events. [2024-06-20 18:15:53,868 INFO L125 PetriNetUnfolderBase]: For 15414/15418 co-relation queries the response was YES. [2024-06-20 18:15:53,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 729 events. 391/729 cut-off events. For 15414/15418 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3662 event pairs, 52 based on Foata normal form. 3/731 useless extension candidates. Maximal degree in co-relation 4493. Up to 547 conditions per place. [2024-06-20 18:15:53,873 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-06-20 18:15:53,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 103 transitions, 1268 flow [2024-06-20 18:15:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 18:15:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 18:15:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 18:15:53,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-20 18:15:53,874 INFO L175 Difference]: Start difference. First operand has 128 places, 87 transitions, 966 flow. Second operand 10 states and 110 transitions. [2024-06-20 18:15:53,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 103 transitions, 1268 flow [2024-06-20 18:15:53,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 103 transitions, 1188 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 18:15:53,904 INFO L231 Difference]: Finished difference. Result has 130 places, 87 transitions, 942 flow [2024-06-20 18:15:53,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=942, PETRI_PLACES=130, PETRI_TRANSITIONS=87} [2024-06-20 18:15:53,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-20 18:15:53,905 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 87 transitions, 942 flow [2024-06-20 18:15:53,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 18:15:53,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:53,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:53,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 18:15:53,905 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 18:15:53,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1736643841, now seen corresponding path program 1 times [2024-06-20 18:15:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713198584] [2024-06-20 18:15:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:54,111 INFO 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 18:15:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:54,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713198584] [2024-06-20 18:15:54,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713198584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:54,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:54,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:54,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183251302] [2024-06-20 18:15:54,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:54,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:54,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:54,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 87 transitions, 942 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:54,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:54,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:54,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:54,390 INFO L124 PetriNetUnfolderBase]: 418/784 cut-off events. [2024-06-20 18:15:54,390 INFO L125 PetriNetUnfolderBase]: For 18074/18078 co-relation queries the response was YES. [2024-06-20 18:15:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4796 conditions, 784 events. 418/784 cut-off events. For 18074/18078 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3996 event pairs, 11 based on Foata normal form. 13/797 useless extension candidates. Maximal degree in co-relation 4724. Up to 442 conditions per place. [2024-06-20 18:15:54,394 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 70 selfloop transitions, 27 changer transitions 22/122 dead transitions. [2024-06-20 18:15:54,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 122 transitions, 1504 flow [2024-06-20 18:15:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 18:15:54,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169278996865204 [2024-06-20 18:15:54,395 INFO L175 Difference]: Start difference. First operand has 130 places, 87 transitions, 942 flow. Second operand 11 states and 133 transitions. [2024-06-20 18:15:54,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 122 transitions, 1504 flow [2024-06-20 18:15:54,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 1408 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:54,429 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 860 flow [2024-06-20 18:15:54,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2024-06-20 18:15:54,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-20 18:15:54,429 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 860 flow [2024-06-20 18:15:54,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:54,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:54,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:54,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 18:15:54,430 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 18:15:54,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:54,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1626998229, now seen corresponding path program 2 times [2024-06-20 18:15:54,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:54,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914217780] [2024-06-20 18:15:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:54,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:54,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:54,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914217780] [2024-06-20 18:15:54,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914217780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:54,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:54,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:54,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301635251] [2024-06-20 18:15:54,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:54,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:54,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:54,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:54,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:54,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 860 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:54,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:54,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:54,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:54,832 INFO L124 PetriNetUnfolderBase]: 377/705 cut-off events. [2024-06-20 18:15:54,832 INFO L125 PetriNetUnfolderBase]: For 16016/16020 co-relation queries the response was YES. [2024-06-20 18:15:54,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 705 events. 377/705 cut-off events. For 16016/16020 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3524 event pairs, 37 based on Foata normal form. 13/718 useless extension candidates. Maximal degree in co-relation 4149. Up to 443 conditions per place. [2024-06-20 18:15:54,837 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 67 selfloop transitions, 24 changer transitions 18/112 dead transitions. [2024-06-20 18:15:54,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 112 transitions, 1332 flow [2024-06-20 18:15:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 18:15:54,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981191222570533 [2024-06-20 18:15:54,839 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 860 flow. Second operand 11 states and 127 transitions. [2024-06-20 18:15:54,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 112 transitions, 1332 flow [2024-06-20 18:15:54,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 112 transitions, 1262 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 18:15:54,868 INFO L231 Difference]: Finished difference. Result has 126 places, 80 transitions, 806 flow [2024-06-20 18:15:54,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=806, PETRI_PLACES=126, PETRI_TRANSITIONS=80} [2024-06-20 18:15:54,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-20 18:15:54,869 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 80 transitions, 806 flow [2024-06-20 18:15:54,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:54,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:54,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:54,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 18:15:54,870 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 18:15:54,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:54,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1625095449, now seen corresponding path program 3 times [2024-06-20 18:15:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:54,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040435820] [2024-06-20 18:15:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:54,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:55,083 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 18:15:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040435820] [2024-06-20 18:15:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040435820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:55,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:55,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:55,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816785379] [2024-06-20 18:15:55,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:55,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:55,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:55,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:55,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:55,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:55,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 80 transitions, 806 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:55,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:55,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:55,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:55,316 INFO L124 PetriNetUnfolderBase]: 357/669 cut-off events. [2024-06-20 18:15:55,316 INFO L125 PetriNetUnfolderBase]: For 15334/15334 co-relation queries the response was YES. [2024-06-20 18:15:55,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 669 events. 357/669 cut-off events. For 15334/15334 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3325 event pairs, 37 based on Foata normal form. 9/678 useless extension candidates. Maximal degree in co-relation 3846. Up to 423 conditions per place. [2024-06-20 18:15:55,320 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 65 selfloop transitions, 25 changer transitions 13/106 dead transitions. [2024-06-20 18:15:55,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 106 transitions, 1204 flow [2024-06-20 18:15:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 18:15:55,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887147335423197 [2024-06-20 18:15:55,321 INFO L175 Difference]: Start difference. First operand has 126 places, 80 transitions, 806 flow. Second operand 11 states and 124 transitions. [2024-06-20 18:15:55,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 106 transitions, 1204 flow [2024-06-20 18:15:55,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 106 transitions, 1152 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:55,339 INFO L231 Difference]: Finished difference. Result has 123 places, 78 transitions, 782 flow [2024-06-20 18:15:55,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=782, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2024-06-20 18:15:55,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-20 18:15:55,339 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 782 flow [2024-06-20 18:15:55,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:55,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:55,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 18:15:55,340 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 18:15:55,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1625090799, now seen corresponding path program 4 times [2024-06-20 18:15:55,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:55,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084391843] [2024-06-20 18:15:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:55,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:55,556 INFO 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 18:15:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084391843] [2024-06-20 18:15:55,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084391843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:55,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:55,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:55,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648383141] [2024-06-20 18:15:55,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:55,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:55,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:55,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:55,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 782 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:55,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:55,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:55,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:55,772 INFO L124 PetriNetUnfolderBase]: 346/652 cut-off events. [2024-06-20 18:15:55,773 INFO L125 PetriNetUnfolderBase]: For 14321/14325 co-relation queries the response was YES. [2024-06-20 18:15:55,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3759 conditions, 652 events. 346/652 cut-off events. For 14321/14325 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3204 event pairs, 37 based on Foata normal form. 13/665 useless extension candidates. Maximal degree in co-relation 3691. Up to 406 conditions per place. [2024-06-20 18:15:55,776 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 59 selfloop transitions, 21 changer transitions 21/104 dead transitions. [2024-06-20 18:15:55,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 104 transitions, 1132 flow [2024-06-20 18:15:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 18:15:55,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38557993730407525 [2024-06-20 18:15:55,778 INFO L175 Difference]: Start difference. First operand has 123 places, 78 transitions, 782 flow. Second operand 11 states and 123 transitions. [2024-06-20 18:15:55,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 104 transitions, 1132 flow [2024-06-20 18:15:55,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 104 transitions, 1078 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 18:15:55,801 INFO L231 Difference]: Finished difference. Result has 121 places, 73 transitions, 738 flow [2024-06-20 18:15:55,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=738, PETRI_PLACES=121, PETRI_TRANSITIONS=73} [2024-06-20 18:15:55,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-20 18:15:55,802 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 73 transitions, 738 flow [2024-06-20 18:15:55,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:55,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:55,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:55,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 18:15:55,803 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 18:15:55,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -782989849, now seen corresponding path program 5 times [2024-06-20 18:15:55,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:55,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259599735] [2024-06-20 18:15:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:56,026 INFO 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 18:15:56,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:56,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259599735] [2024-06-20 18:15:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259599735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:56,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:56,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133000223] [2024-06-20 18:15:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:56,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:56,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:56,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:56,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:56,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 73 transitions, 738 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:56,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:56,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:56,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:56,202 INFO L124 PetriNetUnfolderBase]: 329/616 cut-off events. [2024-06-20 18:15:56,202 INFO L125 PetriNetUnfolderBase]: For 13009/13013 co-relation queries the response was YES. [2024-06-20 18:15:56,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3610 conditions, 616 events. 329/616 cut-off events. For 13009/13013 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2982 event pairs, 33 based on Foata normal form. 13/629 useless extension candidates. Maximal degree in co-relation 3543. Up to 377 conditions per place. [2024-06-20 18:15:56,205 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 59 selfloop transitions, 19 changer transitions 18/99 dead transitions. [2024-06-20 18:15:56,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 99 transitions, 1176 flow [2024-06-20 18:15:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 18:15:56,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38557993730407525 [2024-06-20 18:15:56,206 INFO L175 Difference]: Start difference. First operand has 121 places, 73 transitions, 738 flow. Second operand 11 states and 123 transitions. [2024-06-20 18:15:56,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 99 transitions, 1176 flow [2024-06-20 18:15:56,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 99 transitions, 1089 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-20 18:15:56,259 INFO L231 Difference]: Finished difference. Result has 114 places, 70 transitions, 671 flow [2024-06-20 18:15:56,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=671, PETRI_PLACES=114, PETRI_TRANSITIONS=70} [2024-06-20 18:15:56,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-20 18:15:56,260 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 70 transitions, 671 flow [2024-06-20 18:15:56,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:56,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:56,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 18:15:56,260 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 18:15:56,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -781087069, now seen corresponding path program 6 times [2024-06-20 18:15:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219145015] [2024-06-20 18:15:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:56,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219145015] [2024-06-20 18:15:56,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219145015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:56,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:56,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:56,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878990148] [2024-06-20 18:15:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:56,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:56,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:56,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 70 transitions, 671 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:56,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:56,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:56,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:56,684 INFO L124 PetriNetUnfolderBase]: 309/580 cut-off events. [2024-06-20 18:15:56,684 INFO L125 PetriNetUnfolderBase]: For 11019/11019 co-relation queries the response was YES. [2024-06-20 18:15:56,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 580 events. 309/580 cut-off events. For 11019/11019 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2773 event pairs, 33 based on Foata normal form. 9/589 useless extension candidates. Maximal degree in co-relation 3161. Up to 357 conditions per place. [2024-06-20 18:15:56,687 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 57 selfloop transitions, 20 changer transitions 13/93 dead transitions. [2024-06-20 18:15:56,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 93 transitions, 1027 flow [2024-06-20 18:15:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 18:15:56,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761755485893417 [2024-06-20 18:15:56,688 INFO L175 Difference]: Start difference. First operand has 114 places, 70 transitions, 671 flow. Second operand 11 states and 120 transitions. [2024-06-20 18:15:56,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 93 transitions, 1027 flow [2024-06-20 18:15:56,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 93 transitions, 985 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:56,704 INFO L231 Difference]: Finished difference. Result has 111 places, 68 transitions, 649 flow [2024-06-20 18:15:56,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=649, PETRI_PLACES=111, PETRI_TRANSITIONS=68} [2024-06-20 18:15:56,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-20 18:15:56,705 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 68 transitions, 649 flow [2024-06-20 18:15:56,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:56,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:56,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:56,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 18:15:56,705 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 18:15:56,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:56,706 INFO L85 PathProgramCache]: Analyzing trace with hash -698560175, now seen corresponding path program 7 times [2024-06-20 18:15:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:56,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964139870] [2024-06-20 18:15:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:56,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:56,909 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 18:15:56,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964139870] [2024-06-20 18:15:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964139870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:56,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:56,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618271004] [2024-06-20 18:15:56,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:56,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:56,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:56,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:56,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 68 transitions, 649 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:56,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:57,081 INFO L124 PetriNetUnfolderBase]: 298/563 cut-off events. [2024-06-20 18:15:57,081 INFO L125 PetriNetUnfolderBase]: For 10686/10686 co-relation queries the response was YES. [2024-06-20 18:15:57,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3079 conditions, 563 events. 298/563 cut-off events. For 10686/10686 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2681 event pairs, 15 based on Foata normal form. 9/572 useless extension candidates. Maximal degree in co-relation 3016. Up to 340 conditions per place. [2024-06-20 18:15:57,084 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 54 selfloop transitions, 17 changer transitions 17/91 dead transitions. [2024-06-20 18:15:57,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 91 transitions, 961 flow [2024-06-20 18:15:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-20 18:15:57,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3730407523510972 [2024-06-20 18:15:57,085 INFO L175 Difference]: Start difference. First operand has 111 places, 68 transitions, 649 flow. Second operand 11 states and 119 transitions. [2024-06-20 18:15:57,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 91 transitions, 961 flow [2024-06-20 18:15:57,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 91 transitions, 917 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 18:15:57,097 INFO L231 Difference]: Finished difference. Result has 109 places, 64 transitions, 611 flow [2024-06-20 18:15:57,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=611, PETRI_PLACES=109, PETRI_TRANSITIONS=64} [2024-06-20 18:15:57,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-20 18:15:57,098 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 64 transitions, 611 flow [2024-06-20 18:15:57,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:57,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:57,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:57,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 18:15:57,098 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 18:15:57,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:57,099 INFO L85 PathProgramCache]: Analyzing trace with hash -492829295, now seen corresponding path program 8 times [2024-06-20 18:15:57,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:57,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577568767] [2024-06-20 18:15:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:57,342 INFO 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 18:15:57,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:57,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577568767] [2024-06-20 18:15:57,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577568767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:57,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:57,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671144103] [2024-06-20 18:15:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:57,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:57,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:57,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 64 transitions, 611 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:57,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:57,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:57,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:57,536 INFO L124 PetriNetUnfolderBase]: 285/538 cut-off events. [2024-06-20 18:15:57,536 INFO L125 PetriNetUnfolderBase]: For 9720/9724 co-relation queries the response was YES. [2024-06-20 18:15:57,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 538 events. 285/538 cut-off events. For 9720/9724 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2518 event pairs, 33 based on Foata normal form. 13/551 useless extension candidates. Maximal degree in co-relation 2909. Up to 319 conditions per place. [2024-06-20 18:15:57,539 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 53 selfloop transitions, 16 changer transitions 18/90 dead transitions. [2024-06-20 18:15:57,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 90 transitions, 939 flow [2024-06-20 18:15:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 18:15:57,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824451410658307 [2024-06-20 18:15:57,540 INFO L175 Difference]: Start difference. First operand has 109 places, 64 transitions, 611 flow. Second operand 11 states and 122 transitions. [2024-06-20 18:15:57,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 90 transitions, 939 flow [2024-06-20 18:15:57,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 90 transitions, 881 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 18:15:57,556 INFO L231 Difference]: Finished difference. Result has 104 places, 61 transitions, 561 flow [2024-06-20 18:15:57,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=561, PETRI_PLACES=104, PETRI_TRANSITIONS=61} [2024-06-20 18:15:57,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-20 18:15:57,556 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 61 transitions, 561 flow [2024-06-20 18:15:57,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:57,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:57,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:57,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 18:15:57,556 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 18:15:57,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash -500156765, now seen corresponding path program 9 times [2024-06-20 18:15:57,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:57,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50652998] [2024-06-20 18:15:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:57,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:57,794 INFO 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 18:15:57,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:57,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50652998] [2024-06-20 18:15:57,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50652998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:57,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:57,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:57,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456119616] [2024-06-20 18:15:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:57,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:57,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:57,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 61 transitions, 561 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:57,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:57,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:57,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:57,990 INFO L124 PetriNetUnfolderBase]: 265/502 cut-off events. [2024-06-20 18:15:57,990 INFO L125 PetriNetUnfolderBase]: For 8119/8119 co-relation queries the response was YES. [2024-06-20 18:15:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 502 events. 265/502 cut-off events. For 8119/8119 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2312 event pairs, 33 based on Foata normal form. 9/511 useless extension candidates. Maximal degree in co-relation 2655. Up to 299 conditions per place. [2024-06-20 18:15:57,993 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 51 selfloop transitions, 17 changer transitions 13/84 dead transitions. [2024-06-20 18:15:57,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 84 transitions, 891 flow [2024-06-20 18:15:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-20 18:15:57,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3730407523510972 [2024-06-20 18:15:57,994 INFO L175 Difference]: Start difference. First operand has 104 places, 61 transitions, 561 flow. Second operand 11 states and 119 transitions. [2024-06-20 18:15:57,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 84 transitions, 891 flow [2024-06-20 18:15:58,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 84 transitions, 843 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 18:15:58,004 INFO L231 Difference]: Finished difference. Result has 100 places, 59 transitions, 537 flow [2024-06-20 18:15:58,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=100, PETRI_TRANSITIONS=59} [2024-06-20 18:15:58,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-20 18:15:58,005 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 59 transitions, 537 flow [2024-06-20 18:15:58,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:58,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:58,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:58,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 18:15:58,005 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 18:15:58,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:58,005 INFO L85 PathProgramCache]: Analyzing trace with hash -500152115, now seen corresponding path program 10 times [2024-06-20 18:15:58,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:58,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955261795] [2024-06-20 18:15:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:58,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:58,251 INFO 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 18:15:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955261795] [2024-06-20 18:15:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955261795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:58,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134874181] [2024-06-20 18:15:58,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:58,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:58,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:58,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 59 transitions, 537 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:58,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:58,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:58,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:58,418 INFO L124 PetriNetUnfolderBase]: 254/485 cut-off events. [2024-06-20 18:15:58,418 INFO L125 PetriNetUnfolderBase]: For 7368/7372 co-relation queries the response was YES. [2024-06-20 18:15:58,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 485 events. 254/485 cut-off events. For 7368/7372 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2198 event pairs, 15 based on Foata normal form. 13/498 useless extension candidates. Maximal degree in co-relation 2470. Up to 282 conditions per place. [2024-06-20 18:15:58,420 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 12 changer transitions 23/82 dead transitions. [2024-06-20 18:15:58,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 82 transitions, 823 flow [2024-06-20 18:15:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-20 18:15:58,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36990595611285265 [2024-06-20 18:15:58,421 INFO L175 Difference]: Start difference. First operand has 100 places, 59 transitions, 537 flow. Second operand 11 states and 118 transitions. [2024-06-20 18:15:58,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 82 transitions, 823 flow [2024-06-20 18:15:58,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 82 transitions, 785 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 18:15:58,430 INFO L231 Difference]: Finished difference. Result has 98 places, 53 transitions, 474 flow [2024-06-20 18:15:58,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=474, PETRI_PLACES=98, PETRI_TRANSITIONS=53} [2024-06-20 18:15:58,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-20 18:15:58,431 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 53 transitions, 474 flow [2024-06-20 18:15:58,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:58,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:58,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 18:15:58,431 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 18:15:58,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1064284101, now seen corresponding path program 11 times [2024-06-20 18:15:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:58,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437206275] [2024-06-20 18:15:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:58,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437206275] [2024-06-20 18:15:58,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437206275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:58,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:58,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:58,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747146552] [2024-06-20 18:15:58,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:58,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:58,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:58,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:58,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:58,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:58,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 53 transitions, 474 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:58,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:58,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:58,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:58,863 INFO L124 PetriNetUnfolderBase]: 236/441 cut-off events. [2024-06-20 18:15:58,876 INFO L125 PetriNetUnfolderBase]: For 6492/6496 co-relation queries the response was YES. [2024-06-20 18:15:58,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2358 conditions, 441 events. 236/441 cut-off events. For 6492/6496 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1941 event pairs, 32 based on Foata normal form. 13/454 useless extension candidates. Maximal degree in co-relation 2301. Up to 261 conditions per place. [2024-06-20 18:15:58,879 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 43 selfloop transitions, 12 changer transitions 18/76 dead transitions. [2024-06-20 18:15:58,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 76 transitions, 758 flow [2024-06-20 18:15:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-20 18:15:58,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3667711598746082 [2024-06-20 18:15:58,880 INFO L175 Difference]: Start difference. First operand has 98 places, 53 transitions, 474 flow. Second operand 11 states and 117 transitions. [2024-06-20 18:15:58,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 76 transitions, 758 flow [2024-06-20 18:15:58,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 76 transitions, 692 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-20 18:15:58,887 INFO L231 Difference]: Finished difference. Result has 87 places, 50 transitions, 410 flow [2024-06-20 18:15:58,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=87, PETRI_TRANSITIONS=50} [2024-06-20 18:15:58,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-20 18:15:58,897 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 50 transitions, 410 flow [2024-06-20 18:15:58,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:58,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:58,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:58,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 18:15:58,898 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 18:15:58,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1071611571, now seen corresponding path program 12 times [2024-06-20 18:15:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:58,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740303195] [2024-06-20 18:15:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:59,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:59,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740303195] [2024-06-20 18:15:59,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740303195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:59,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208281791] [2024-06-20 18:15:59,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:59,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:59,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:59,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 50 transitions, 410 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:59,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:59,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:59,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:59,249 INFO L124 PetriNetUnfolderBase]: 216/407 cut-off events. [2024-06-20 18:15:59,250 INFO L125 PetriNetUnfolderBase]: For 5037/5041 co-relation queries the response was YES. [2024-06-20 18:15:59,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073 conditions, 407 events. 216/407 cut-off events. For 5037/5041 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1760 event pairs, 32 based on Foata normal form. 13/420 useless extension candidates. Maximal degree in co-relation 2022. Up to 241 conditions per place. [2024-06-20 18:15:59,251 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 41 selfloop transitions, 13 changer transitions 13/70 dead transitions. [2024-06-20 18:15:59,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 70 transitions, 684 flow [2024-06-20 18:15:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-20 18:15:59,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573667711598746 [2024-06-20 18:15:59,262 INFO L175 Difference]: Start difference. First operand has 87 places, 50 transitions, 410 flow. Second operand 11 states and 114 transitions. [2024-06-20 18:15:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 70 transitions, 684 flow [2024-06-20 18:15:59,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 70 transitions, 644 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 18:15:59,268 INFO L231 Difference]: Finished difference. Result has 83 places, 48 transitions, 388 flow [2024-06-20 18:15:59,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=388, PETRI_PLACES=83, PETRI_TRANSITIONS=48} [2024-06-20 18:15:59,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-20 18:15:59,269 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 48 transitions, 388 flow [2024-06-20 18:15:59,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:59,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:59,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:59,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 18:15:59,270 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 18:15:59,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash -234734293, now seen corresponding path program 13 times [2024-06-20 18:15:59,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:59,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773165639] [2024-06-20 18:15:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:59,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:59,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773165639] [2024-06-20 18:15:59,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773165639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:59,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:59,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:59,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541026443] [2024-06-20 18:15:59,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:59,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:15:59,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:15:59,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 48 transitions, 388 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:59,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:15:59,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:15:59,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:15:59,710 INFO L124 PetriNetUnfolderBase]: 205/388 cut-off events. [2024-06-20 18:15:59,710 INFO L125 PetriNetUnfolderBase]: For 4228/4228 co-relation queries the response was YES. [2024-06-20 18:15:59,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 388 events. 205/388 cut-off events. For 4228/4228 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1630 event pairs, 32 based on Foata normal form. 9/397 useless extension candidates. Maximal degree in co-relation 1855. Up to 224 conditions per place. [2024-06-20 18:15:59,712 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 38 selfloop transitions, 10 changer transitions 17/68 dead transitions. [2024-06-20 18:15:59,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 68 transitions, 628 flow [2024-06-20 18:15:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:15:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:15:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-20 18:15:59,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-20 18:15:59,725 INFO L175 Difference]: Start difference. First operand has 83 places, 48 transitions, 388 flow. Second operand 11 states and 113 transitions. [2024-06-20 18:15:59,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 68 transitions, 628 flow [2024-06-20 18:15:59,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 68 transitions, 598 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 18:15:59,730 INFO L231 Difference]: Finished difference. Result has 81 places, 44 transitions, 346 flow [2024-06-20 18:15:59,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=81, PETRI_TRANSITIONS=44} [2024-06-20 18:15:59,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-20 18:15:59,730 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 44 transitions, 346 flow [2024-06-20 18:15:59,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:15:59,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:15:59,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:15:59,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 18:15:59,731 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 18:15:59,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:15:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1354444655, now seen corresponding path program 14 times [2024-06-20 18:15:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:15:59,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413723204] [2024-06-20 18:15:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:15:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:15:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:15:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:15:59,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:15:59,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413723204] [2024-06-20 18:15:59,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413723204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:15:59,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:15:59,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:15:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886857304] [2024-06-20 18:15:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:15:59,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:15:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:15:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:15:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:16:00,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:16:00,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 44 transitions, 346 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:00,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:00,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:16:00,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:00,148 INFO L124 PetriNetUnfolderBase]: 192/361 cut-off events. [2024-06-20 18:16:00,148 INFO L125 PetriNetUnfolderBase]: For 3766/3768 co-relation queries the response was YES. [2024-06-20 18:16:00,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 361 events. 192/361 cut-off events. For 3766/3768 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1483 event pairs, 28 based on Foata normal form. 11/372 useless extension candidates. Maximal degree in co-relation 1742. Up to 189 conditions per place. [2024-06-20 18:16:00,150 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 35 selfloop transitions, 11 changer transitions 18/67 dead transitions. [2024-06-20 18:16:00,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 646 flow [2024-06-20 18:16:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:16:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:16:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-20 18:16:00,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 18:16:00,151 INFO L175 Difference]: Start difference. First operand has 81 places, 44 transitions, 346 flow. Second operand 11 states and 116 transitions. [2024-06-20 18:16:00,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 646 flow [2024-06-20 18:16:00,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 588 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-20 18:16:00,155 INFO L231 Difference]: Finished difference. Result has 75 places, 41 transitions, 304 flow [2024-06-20 18:16:00,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=304, PETRI_PLACES=75, PETRI_TRANSITIONS=41} [2024-06-20 18:16:00,156 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-20 18:16:00,156 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 41 transitions, 304 flow [2024-06-20 18:16:00,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:00,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:00,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:00,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 18:16:00,157 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 18:16:00,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:00,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1352541875, now seen corresponding path program 15 times [2024-06-20 18:16:00,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:00,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62292602] [2024-06-20 18:16:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:00,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:16:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62292602] [2024-06-20 18:16:00,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62292602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:00,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:00,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:16:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752369875] [2024-06-20 18:16:00,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:00,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:16:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:16:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:16:00,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:16:00,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 41 transitions, 304 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:00,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:00,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:16:00,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:00,530 INFO L124 PetriNetUnfolderBase]: 172/329 cut-off events. [2024-06-20 18:16:00,531 INFO L125 PetriNetUnfolderBase]: For 2766/2768 co-relation queries the response was YES. [2024-06-20 18:16:00,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 329 events. 172/329 cut-off events. For 2766/2768 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1305 event pairs, 28 based on Foata normal form. 11/340 useless extension candidates. Maximal degree in co-relation 1459. Up to 169 conditions per place. [2024-06-20 18:16:00,532 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 33 selfloop transitions, 12 changer transitions 13/61 dead transitions. [2024-06-20 18:16:00,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 61 transitions, 540 flow [2024-06-20 18:16:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:16:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:16:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-20 18:16:00,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-20 18:16:00,534 INFO L175 Difference]: Start difference. First operand has 75 places, 41 transitions, 304 flow. Second operand 11 states and 113 transitions. [2024-06-20 18:16:00,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 61 transitions, 540 flow [2024-06-20 18:16:00,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 506 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 18:16:00,545 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 284 flow [2024-06-20 18:16:00,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2024-06-20 18:16:00,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-20 18:16:00,545 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 284 flow [2024-06-20 18:16:00,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:00,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:00,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:00,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 18:16:00,547 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 18:16:00,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:00,547 INFO L85 PathProgramCache]: Analyzing trace with hash -433142353, now seen corresponding path program 16 times [2024-06-20 18:16:00,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:00,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308968845] [2024-06-20 18:16:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:00,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:00,826 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 18:16:00,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:00,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308968845] [2024-06-20 18:16:00,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308968845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:00,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:16:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153673658] [2024-06-20 18:16:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:00,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:16:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:16:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:16:00,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:16:00,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 284 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:00,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:00,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:16:00,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:00,970 INFO L124 PetriNetUnfolderBase]: 161/310 cut-off events. [2024-06-20 18:16:00,970 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-06-20 18:16:00,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 310 events. 161/310 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1199 event pairs, 10 based on Foata normal form. 9/319 useless extension candidates. Maximal degree in co-relation 1316. Up to 152 conditions per place. [2024-06-20 18:16:00,972 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 29 selfloop transitions, 8 changer transitions 19/59 dead transitions. [2024-06-20 18:16:00,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 59 transitions, 494 flow [2024-06-20 18:16:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:16:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:16:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-20 18:16:00,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510971786833856 [2024-06-20 18:16:00,985 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 284 flow. Second operand 11 states and 112 transitions. [2024-06-20 18:16:00,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 59 transitions, 494 flow [2024-06-20 18:16:00,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 466 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 18:16:00,988 INFO L231 Difference]: Finished difference. Result has 69 places, 34 transitions, 241 flow [2024-06-20 18:16:00,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=241, PETRI_PLACES=69, PETRI_TRANSITIONS=34} [2024-06-20 18:16:00,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-20 18:16:00,990 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 34 transitions, 241 flow [2024-06-20 18:16:00,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:00,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:00,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:00,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 18:16:00,991 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 18:16:00,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1696999155, now seen corresponding path program 17 times [2024-06-20 18:16:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:00,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858215417] [2024-06-20 18:16:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:00,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:16:01,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:01,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858215417] [2024-06-20 18:16:01,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858215417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:01,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:01,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:16:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309407989] [2024-06-20 18:16:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:01,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:16:01,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:01,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:16:01,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:16:01,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:16:01,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 34 transitions, 241 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:01,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:01,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:16:01,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:01,354 INFO L124 PetriNetUnfolderBase]: 147/282 cut-off events. [2024-06-20 18:16:01,354 INFO L125 PetriNetUnfolderBase]: For 2031/2031 co-relation queries the response was YES. [2024-06-20 18:16:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 282 events. 147/282 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1053 event pairs, 6 based on Foata normal form. 9/291 useless extension candidates. Maximal degree in co-relation 1203. Up to 131 conditions per place. [2024-06-20 18:16:01,356 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 26 selfloop transitions, 8 changer transitions 19/56 dead transitions. [2024-06-20 18:16:01,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 56 transitions, 459 flow [2024-06-20 18:16:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:16:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:16:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-20 18:16:01,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573667711598746 [2024-06-20 18:16:01,357 INFO L175 Difference]: Start difference. First operand has 69 places, 34 transitions, 241 flow. Second operand 11 states and 114 transitions. [2024-06-20 18:16:01,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 56 transitions, 459 flow [2024-06-20 18:16:01,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 408 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-20 18:16:01,359 INFO L231 Difference]: Finished difference. Result has 61 places, 30 transitions, 192 flow [2024-06-20 18:16:01,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=30} [2024-06-20 18:16:01,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-20 18:16:01,360 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 30 transitions, 192 flow [2024-06-20 18:16:01,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:01,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:01,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:01,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 18:16:01,361 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 18:16:01,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1946349825, now seen corresponding path program 18 times [2024-06-20 18:16:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:01,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334415540] [2024-06-20 18:16:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:16:01,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334415540] [2024-06-20 18:16:01,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334415540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:01,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:01,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:16:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111432461] [2024-06-20 18:16:01,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:16:01,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:16:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:16:01,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:16:01,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 30 transitions, 192 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:01,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:01,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:16:01,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:01,719 INFO L124 PetriNetUnfolderBase]: 118/225 cut-off events. [2024-06-20 18:16:01,720 INFO L125 PetriNetUnfolderBase]: For 1345/1353 co-relation queries the response was YES. [2024-06-20 18:16:01,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 225 events. 118/225 cut-off events. For 1345/1353 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 775 event pairs, 24 based on Foata normal form. 17/242 useless extension candidates. Maximal degree in co-relation 905. Up to 110 conditions per place. [2024-06-20 18:16:01,721 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 21 selfloop transitions, 7 changer transitions 18/49 dead transitions. [2024-06-20 18:16:01,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 49 transitions, 368 flow [2024-06-20 18:16:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:16:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:16:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-20 18:16:01,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34169278996865204 [2024-06-20 18:16:01,722 INFO L175 Difference]: Start difference. First operand has 61 places, 30 transitions, 192 flow. Second operand 11 states and 109 transitions. [2024-06-20 18:16:01,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 49 transitions, 368 flow [2024-06-20 18:16:01,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 336 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 18:16:01,724 INFO L231 Difference]: Finished difference. Result has 55 places, 27 transitions, 153 flow [2024-06-20 18:16:01,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=27} [2024-06-20 18:16:01,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-20 18:16:01,724 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 27 transitions, 153 flow [2024-06-20 18:16:01,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:01,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:01,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:01,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 18:16:01,725 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 18:16:01,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1953672645, now seen corresponding path program 19 times [2024-06-20 18:16:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996510103] [2024-06-20 18:16:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:01,926 INFO 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 18:16:01,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:01,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996510103] [2024-06-20 18:16:01,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996510103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:01,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:01,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:16:01,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732994632] [2024-06-20 18:16:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:01,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:16:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:16:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:16:01,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:16:01,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 27 transitions, 153 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:01,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:01,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:16:01,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:02,065 INFO L124 PetriNetUnfolderBase]: 98/191 cut-off events. [2024-06-20 18:16:02,065 INFO L125 PetriNetUnfolderBase]: For 954/954 co-relation queries the response was YES. [2024-06-20 18:16:02,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 191 events. 98/191 cut-off events. For 954/954 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 639 event pairs, 24 based on Foata normal form. 9/200 useless extension candidates. Maximal degree in co-relation 720. Up to 90 conditions per place. [2024-06-20 18:16:02,066 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 19 selfloop transitions, 8 changer transitions 13/43 dead transitions. [2024-06-20 18:16:02,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 43 transitions, 299 flow [2024-06-20 18:16:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:16:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:16:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-20 18:16:02,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2024-06-20 18:16:02,067 INFO L175 Difference]: Start difference. First operand has 55 places, 27 transitions, 153 flow. Second operand 11 states and 106 transitions. [2024-06-20 18:16:02,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 43 transitions, 299 flow [2024-06-20 18:16:02,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 265 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-20 18:16:02,068 INFO L231 Difference]: Finished difference. Result has 49 places, 25 transitions, 130 flow [2024-06-20 18:16:02,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=130, PETRI_PLACES=49, PETRI_TRANSITIONS=25} [2024-06-20 18:16:02,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-20 18:16:02,069 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 25 transitions, 130 flow [2024-06-20 18:16:02,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:02,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:16:02,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:16:02,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 18:16:02,069 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 18:16:02,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:16:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1953677295, now seen corresponding path program 20 times [2024-06-20 18:16:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:16:02,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669120355] [2024-06-20 18:16:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:16:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:16:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:16:02,271 INFO 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 18:16:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:16:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669120355] [2024-06-20 18:16:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669120355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:16:02,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:16:02,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 18:16:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745989616] [2024-06-20 18:16:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:16:02,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 18:16:02,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:16:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 18:16:02,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:16:02,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 18:16:02,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 25 transitions, 130 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:02,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:16:02,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 18:16:02,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:16:02,384 INFO L124 PetriNetUnfolderBase]: 42/96 cut-off events. [2024-06-20 18:16:02,384 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-06-20 18:16:02,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 96 events. 42/96 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 221 event pairs, 0 based on Foata normal form. 9/105 useless extension candidates. Maximal degree in co-relation 306. Up to 51 conditions per place. [2024-06-20 18:16:02,385 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-20 18:16:02,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 33 transitions, 204 flow [2024-06-20 18:16:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 18:16:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 18:16:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-20 18:16:02,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30407523510971785 [2024-06-20 18:16:02,386 INFO L175 Difference]: Start difference. First operand has 49 places, 25 transitions, 130 flow. Second operand 11 states and 97 transitions. [2024-06-20 18:16:02,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 33 transitions, 204 flow [2024-06-20 18:16:02,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 33 transitions, 180 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 18:16:02,387 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-20 18:16:02,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-20 18:16:02,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-20 18:16:02,387 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-20 18:16:02,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:16:02,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 18:16:02,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 18:16:02,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 18:16:02,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 18:16:02,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 18:16:02,392 INFO L445 BasicCegarLoop]: Path program histogram: [20, 10, 10, 6, 1, 1, 1, 1, 1] [2024-06-20 18:16:02,394 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 18:16:02,394 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 18:16:02,397 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 18:16:02,397 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 18:16:02,398 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 06:16:02 BasicIcfg [2024-06-20 18:16:02,398 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 18:16:02,398 INFO L158 Benchmark]: Toolchain (without parser) took 23166.30ms. Allocated memory was 176.2MB in the beginning and 583.0MB in the end (delta: 406.8MB). Free memory was 117.3MB in the beginning and 257.0MB in the end (delta: -139.7MB). Peak memory consumption was 270.6MB. Max. memory is 16.1GB. [2024-06-20 18:16:02,398 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 176.2MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:16:02,399 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 176.2MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:16:02,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.41ms. Allocated memory is still 176.2MB. Free memory was 117.3MB in the beginning and 90.9MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-20 18:16:02,399 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.58ms. Allocated memory is still 176.2MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:16:02,399 INFO L158 Benchmark]: Boogie Preprocessor took 57.88ms. Allocated memory is still 176.2MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:16:02,400 INFO L158 Benchmark]: RCFGBuilder took 563.38ms. Allocated memory was 176.2MB in the beginning and 278.9MB in the end (delta: 102.8MB). Free memory was 86.3MB in the beginning and 227.9MB in the end (delta: -141.6MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2024-06-20 18:16:02,400 INFO L158 Benchmark]: TraceAbstraction took 22025.24ms. Allocated memory was 278.9MB in the beginning and 583.0MB in the end (delta: 304.1MB). Free memory was 227.9MB in the beginning and 257.0MB in the end (delta: -29.1MB). Peak memory consumption was 273.9MB. Max. memory is 16.1GB. [2024-06-20 18:16:02,401 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 176.2MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 176.2MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.41ms. Allocated memory is still 176.2MB. Free memory was 117.3MB in the beginning and 90.9MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.58ms. Allocated memory is still 176.2MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.88ms. Allocated memory is still 176.2MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 563.38ms. Allocated memory was 176.2MB in the beginning and 278.9MB in the end (delta: 102.8MB). Free memory was 86.3MB in the beginning and 227.9MB in the end (delta: -141.6MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * TraceAbstraction took 22025.24ms. Allocated memory was 278.9MB in the beginning and 583.0MB in the end (delta: 304.1MB). Free memory was 227.9MB in the beginning and 257.0MB in the end (delta: -29.1MB). Peak memory consumption was 273.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 722]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.0s, OverallIterations: 51, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3383 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2951 mSDsluCounter, 570 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 468 mSDsCounter, 463 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15419 IncrementalHoareTripleChecker+Invalid, 15882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 463 mSolverCounterUnsat, 102 mSDtfsCounter, 15419 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 407 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=966occurred in iteration=30, InterpolantAutomatonStates: 509, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 851 ConstructedInterpolants, 0 QuantifiedInterpolants, 17720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-20 18:16:02,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE