./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/parallel-barrier.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/parallel-barrier.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:02:23,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:02:23,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:02:23,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:02:23,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:02:23,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:02:23,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:02:23,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:02:23,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:02:23,996 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:02:23,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:02:23,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:02:23,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:02:23,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:02:23,998 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:02:23,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:02:23,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:02:23,999 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:02:23,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:02:23,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:02:24,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:02:24,000 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:02:24,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:02:24,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:02:24,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:02:24,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:02:24,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:02:24,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:02:24,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:02:24,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:02:24,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:02:24,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:02:24,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:02:24,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:02:24,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:02:24,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:02:24,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:02:24,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:02:24,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:02:24,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:02:24,005 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:02:24,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:02:24,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:02:24,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:02:24,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:02:24,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:02:24,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:02:24,257 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:02:24,258 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:02:24,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/parallel-barrier.wvr.yml/witness.yml [2024-06-27 18:02:24,406 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:02:24,407 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:02:24,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-06-27 18:02:25,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:02:25,882 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:02:25,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-06-27 18:02:25,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcd37382/29419ed80d2d44f79d44ac660a2132ea/FLAGe6519e556 [2024-06-27 18:02:25,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcd37382/29419ed80d2d44f79d44ac660a2132ea [2024-06-27 18:02:25,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:02:25,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:02:25,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:02:25,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:02:25,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:02:25,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:24" (1/2) ... [2024-06-27 18:02:25,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2229d6c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:25, skipping insertion in model container [2024-06-27 18:02:25,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:24" (1/2) ... [2024-06-27 18:02:25,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ef82ec and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:02:25, skipping insertion in model container [2024-06-27 18:02:25,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:02:25" (2/2) ... [2024-06-27 18:02:25,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2229d6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:25, skipping insertion in model container [2024-06-27 18:02:25,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:02:25" (2/2) ... [2024-06-27 18:02:25,914 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:02:25,934 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:02:25,935 INFO L97 edCorrectnessWitness]: Location invariant before [L193-L193] ! multithreaded || -2147483647 <= y_7 [2024-06-27 18:02:25,935 INFO L97 edCorrectnessWitness]: Location invariant before [L165-L165] ! multithreaded || -2147483647 <= y_7 [2024-06-27 18:02:25,935 INFO L97 edCorrectnessWitness]: Location invariant before [L102-L102] ! multithreaded || -2147483647 <= y_7 [2024-06-27 18:02:25,936 INFO L97 edCorrectnessWitness]: Location invariant before [L194-L194] ! multithreaded || -2147483647 <= y_7 [2024-06-27 18:02:25,936 INFO L97 edCorrectnessWitness]: Location invariant before [L166-L166] ! multithreaded || -2147483647 <= y_7 [2024-06-27 18:02:25,936 INFO L97 edCorrectnessWitness]: Location invariant before [L103-L103] ! multithreaded || -2147483647 <= y_7 [2024-06-27 18:02:25,936 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:02:25,936 INFO L106 edCorrectnessWitness]: ghost_update [L192-L192] multithreaded = 1; [2024-06-27 18:02:25,960 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:02:26,118 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-06-27 18:02:26,135 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:02:26,143 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:02:26,227 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4800,4813] [2024-06-27 18:02:26,228 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:02:26,241 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:02:26,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26 WrapperNode [2024-06-27 18:02:26,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:02:26,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:02:26,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:02:26,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:02:26,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,300 INFO L138 Inliner]: procedures = 24, calls = 68, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 247 [2024-06-27 18:02:26,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:02:26,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:02:26,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:02:26,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:02:26,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,350 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]. [2024-06-27 18:02:26,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:02:26,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:02:26,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:02:26,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:02:26,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (1/1) ... [2024-06-27 18:02:26,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:02:26,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:02:26,409 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) [2024-06-27 18:02:26,416 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 [2024-06-27 18:02:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:02:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 18:02:26,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 18:02:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 18:02:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 18:02:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 18:02:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 18:02:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 18:02:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 18:02:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:02:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-06-27 18:02:26,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-06-27 18:02:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-06-27 18:02:26,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-06-27 18:02:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:02:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:02:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:02:26,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:02:26,465 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:02:26,630 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:02:26,650 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:02:26,900 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:02:26,901 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:02:27,133 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:02:27,134 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:02:27,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:02:27 BoogieIcfgContainer [2024-06-27 18:02:27,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:02:27,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:02:27,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:02:27,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:02:27,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:02:24" (1/4) ... [2024-06-27 18:02:27,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c43c78d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:02:27, skipping insertion in model container [2024-06-27 18:02:27,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:02:25" (2/4) ... [2024-06-27 18:02:27,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c43c78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:02:27, skipping insertion in model container [2024-06-27 18:02:27,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:02:26" (3/4) ... [2024-06-27 18:02:27,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c43c78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:02:27, skipping insertion in model container [2024-06-27 18:02:27,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:02:27" (4/4) ... [2024-06-27 18:02:27,148 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-06-27 18:02:27,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:02:27,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-06-27 18:02:27,163 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:02:27,274 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-06-27 18:02:27,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 87 transitions, 240 flow [2024-06-27 18:02:27,351 INFO L124 PetriNetUnfolderBase]: 4/75 cut-off events. [2024-06-27 18:02:27,351 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:02:27,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 75 events. 4/75 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 203 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2024-06-27 18:02:27,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 87 transitions, 240 flow [2024-06-27 18:02:27,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 74 transitions, 196 flow [2024-06-27 18:02:27,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:02:27,373 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;@b8bd61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:02:27,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-06-27 18:02:27,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:02:27,377 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:02:27,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:02:27,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:27,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:02:27,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:27,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:27,385 INFO L85 PathProgramCache]: Analyzing trace with hash 489226783, now seen corresponding path program 1 times [2024-06-27 18:02:27,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:27,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420075167] [2024-06-27 18:02:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:27,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420075167] [2024-06-27 18:02:27,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420075167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:27,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:27,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:02:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086895020] [2024-06-27 18:02:27,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:27,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:27,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:27,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:27,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2024-06-27 18:02:27,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:27,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:27,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2024-06-27 18:02:27,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:31,936 INFO L124 PetriNetUnfolderBase]: 30782/41161 cut-off events. [2024-06-27 18:02:31,936 INFO L125 PetriNetUnfolderBase]: For 4560/4560 co-relation queries the response was YES. [2024-06-27 18:02:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86287 conditions, 41161 events. 30782/41161 cut-off events. For 4560/4560 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 266325 event pairs, 9743 based on Foata normal form. 789/38470 useless extension candidates. Maximal degree in co-relation 85754. Up to 36294 conditions per place. [2024-06-27 18:02:32,471 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 67 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-06-27 18:02:32,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 97 transitions, 406 flow [2024-06-27 18:02:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-06-27 18:02:32,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-06-27 18:02:32,499 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 196 flow. Second operand 3 states and 175 transitions. [2024-06-27 18:02:32,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 97 transitions, 406 flow [2024-06-27 18:02:32,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 358 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 18:02:32,553 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 189 flow [2024-06-27 18:02:32,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-06-27 18:02:32,557 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -10 predicate places. [2024-06-27 18:02:32,558 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 189 flow [2024-06-27 18:02:32,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:32,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:32,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:32,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:02:32,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:32,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash 427770879, now seen corresponding path program 1 times [2024-06-27 18:02:32,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:32,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199619257] [2024-06-27 18:02:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:32,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:32,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199619257] [2024-06-27 18:02:32,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199619257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:32,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:32,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:32,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043605656] [2024-06-27 18:02:32,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:32,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:32,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 91 [2024-06-27 18:02:32,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:32,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:32,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 91 [2024-06-27 18:02:32,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:39,356 INFO L124 PetriNetUnfolderBase]: 55871/76492 cut-off events. [2024-06-27 18:02:39,357 INFO L125 PetriNetUnfolderBase]: For 11386/11386 co-relation queries the response was YES. [2024-06-27 18:02:39,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163806 conditions, 76492 events. 55871/76492 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 3306. Compared 548075 event pairs, 10578 based on Foata normal form. 5052/77412 useless extension candidates. Maximal degree in co-relation 39416. Up to 34461 conditions per place. [2024-06-27 18:02:40,141 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 163 selfloop transitions, 10 changer transitions 0/198 dead transitions. [2024-06-27 18:02:40,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 198 transitions, 841 flow [2024-06-27 18:02:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:02:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:02:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 398 transitions. [2024-06-27 18:02:40,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6248037676609105 [2024-06-27 18:02:40,154 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 189 flow. Second operand 7 states and 398 transitions. [2024-06-27 18:02:40,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 198 transitions, 841 flow [2024-06-27 18:02:40,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 198 transitions, 837 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:40,162 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 259 flow [2024-06-27 18:02:40,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2024-06-27 18:02:40,168 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2024-06-27 18:02:40,168 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 259 flow [2024-06-27 18:02:40,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:40,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:40,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:40,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:02:40,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:40,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:40,178 INFO L85 PathProgramCache]: Analyzing trace with hash -927702356, now seen corresponding path program 1 times [2024-06-27 18:02:40,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:40,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908480065] [2024-06-27 18:02:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:40,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:40,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908480065] [2024-06-27 18:02:40,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908480065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:40,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:40,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:40,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736602692] [2024-06-27 18:02:40,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:40,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:40,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:40,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-27 18:02:40,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:40,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:40,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-27 18:02:40,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:41,393 INFO L124 PetriNetUnfolderBase]: 7485/12119 cut-off events. [2024-06-27 18:02:41,402 INFO L125 PetriNetUnfolderBase]: For 1553/1553 co-relation queries the response was YES. [2024-06-27 18:02:41,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26281 conditions, 12119 events. 7485/12119 cut-off events. For 1553/1553 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 84554 event pairs, 5024 based on Foata normal form. 138/11097 useless extension candidates. Maximal degree in co-relation 19779. Up to 8048 conditions per place. [2024-06-27 18:02:41,543 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 56 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-06-27 18:02:41,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 378 flow [2024-06-27 18:02:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-06-27 18:02:41,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6556776556776557 [2024-06-27 18:02:41,558 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 259 flow. Second operand 3 states and 179 transitions. [2024-06-27 18:02:41,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 378 flow [2024-06-27 18:02:41,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 361 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:02:41,585 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 210 flow [2024-06-27 18:02:41,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-27 18:02:41,586 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-06-27 18:02:41,587 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 210 flow [2024-06-27 18:02:41,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:41,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:41,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:41,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:02:41,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:41,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2113465607, now seen corresponding path program 1 times [2024-06-27 18:02:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:41,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827442940] [2024-06-27 18:02:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827442940] [2024-06-27 18:02:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827442940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:41,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:41,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:02:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562929979] [2024-06-27 18:02:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:02:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:02:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:02:41,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 91 [2024-06-27 18:02:41,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:41,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:41,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 91 [2024-06-27 18:02:41,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:43,488 INFO L124 PetriNetUnfolderBase]: 16073/22324 cut-off events. [2024-06-27 18:02:43,488 INFO L125 PetriNetUnfolderBase]: For 11421/11421 co-relation queries the response was YES. [2024-06-27 18:02:43,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47810 conditions, 22324 events. 16073/22324 cut-off events. For 11421/11421 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 138267 event pairs, 2305 based on Foata normal form. 1828/22920 useless extension candidates. Maximal degree in co-relation 28432. Up to 3887 conditions per place. [2024-06-27 18:02:43,823 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 176 selfloop transitions, 10 changer transitions 0/209 dead transitions. [2024-06-27 18:02:43,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 209 transitions, 885 flow [2024-06-27 18:02:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:02:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:02:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 484 transitions. [2024-06-27 18:02:43,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318681318681319 [2024-06-27 18:02:43,827 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 210 flow. Second operand 10 states and 484 transitions. [2024-06-27 18:02:43,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 209 transitions, 885 flow [2024-06-27 18:02:43,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 209 transitions, 872 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:02:43,894 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 193 flow [2024-06-27 18:02:43,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-06-27 18:02:43,896 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-06-27 18:02:43,896 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 193 flow [2024-06-27 18:02:43,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:43,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:43,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:43,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:02:43,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:43,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1522049109, now seen corresponding path program 1 times [2024-06-27 18:02:43,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:43,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591559299] [2024-06-27 18:02:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:44,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591559299] [2024-06-27 18:02:44,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591559299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:44,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245695334] [2024-06-27 18:02:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:44,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-27 18:02:44,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:44,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:44,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-27 18:02:44,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:45,036 INFO L124 PetriNetUnfolderBase]: 5801/8784 cut-off events. [2024-06-27 18:02:45,037 INFO L125 PetriNetUnfolderBase]: For 691/691 co-relation queries the response was YES. [2024-06-27 18:02:45,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17501 conditions, 8784 events. 5801/8784 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 51787 event pairs, 3480 based on Foata normal form. 187/8118 useless extension candidates. Maximal degree in co-relation 6116. Up to 6488 conditions per place. [2024-06-27 18:02:45,082 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 58 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-06-27 18:02:45,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 363 flow [2024-06-27 18:02:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-06-27 18:02:45,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.663003663003663 [2024-06-27 18:02:45,084 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 193 flow. Second operand 3 states and 181 transitions. [2024-06-27 18:02:45,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 363 flow [2024-06-27 18:02:45,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 345 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:02:45,087 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 183 flow [2024-06-27 18:02:45,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-06-27 18:02:45,088 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -9 predicate places. [2024-06-27 18:02:45,088 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 183 flow [2024-06-27 18:02:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:45,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:45,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:45,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:02:45,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:45,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:45,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2041399327, now seen corresponding path program 2 times [2024-06-27 18:02:45,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:45,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785817616] [2024-06-27 18:02:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:45,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:45,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:45,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785817616] [2024-06-27 18:02:45,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785817616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:45,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:45,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490984427] [2024-06-27 18:02:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:45,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:45,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:45,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-27 18:02:45,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:45,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:45,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-27 18:02:45,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:46,044 INFO L124 PetriNetUnfolderBase]: 6451/10368 cut-off events. [2024-06-27 18:02:46,044 INFO L125 PetriNetUnfolderBase]: For 1332/1352 co-relation queries the response was YES. [2024-06-27 18:02:46,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20684 conditions, 10368 events. 6451/10368 cut-off events. For 1332/1352 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 69031 event pairs, 4219 based on Foata normal form. 67/9382 useless extension candidates. Maximal degree in co-relation 8085. Up to 7295 conditions per place. [2024-06-27 18:02:46,097 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 59 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-06-27 18:02:46,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 360 flow [2024-06-27 18:02:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2024-06-27 18:02:46,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:02:46,099 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 183 flow. Second operand 3 states and 182 transitions. [2024-06-27 18:02:46,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 360 flow [2024-06-27 18:02:46,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 93 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:46,102 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 187 flow [2024-06-27 18:02:46,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-06-27 18:02:46,103 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -8 predicate places. [2024-06-27 18:02:46,103 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 187 flow [2024-06-27 18:02:46,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:46,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:46,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:46,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:02:46,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:46,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:46,105 INFO L85 PathProgramCache]: Analyzing trace with hash -683699267, now seen corresponding path program 3 times [2024-06-27 18:02:46,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:46,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524232180] [2024-06-27 18:02:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:46,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:46,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:46,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524232180] [2024-06-27 18:02:46,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524232180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:46,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:46,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-06-27 18:02:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793380755] [2024-06-27 18:02:46,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:46,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-06-27 18:02:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:46,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-06-27 18:02:46,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-06-27 18:02:47,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2024-06-27 18:02:47,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 187 flow. Second operand has 18 states, 18 states have (on average 21.833333333333332) internal successors, (393), 18 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:47,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:47,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2024-06-27 18:02:47,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:55,656 INFO L124 PetriNetUnfolderBase]: 77105/100638 cut-off events. [2024-06-27 18:02:55,657 INFO L125 PetriNetUnfolderBase]: For 13434/13434 co-relation queries the response was YES. [2024-06-27 18:02:55,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218139 conditions, 100638 events. 77105/100638 cut-off events. For 13434/13434 co-relation queries the response was YES. Maximal size of possible extension queue 1527. Compared 544532 event pairs, 24146 based on Foata normal form. 1/98017 useless extension candidates. Maximal degree in co-relation 65157. Up to 79392 conditions per place. [2024-06-27 18:02:56,635 INFO L140 encePairwiseOnDemand]: 73/91 looper letters, 270 selfloop transitions, 73 changer transitions 34/390 dead transitions. [2024-06-27 18:02:56,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 390 transitions, 1723 flow [2024-06-27 18:02:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-06-27 18:02:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-06-27 18:02:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 867 transitions. [2024-06-27 18:02:56,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36644125105663566 [2024-06-27 18:02:56,639 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 187 flow. Second operand 26 states and 867 transitions. [2024-06-27 18:02:56,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 390 transitions, 1723 flow [2024-06-27 18:02:56,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 390 transitions, 1717 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:56,657 INFO L231 Difference]: Finished difference. Result has 115 places, 144 transitions, 590 flow [2024-06-27 18:02:56,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=590, PETRI_PLACES=115, PETRI_TRANSITIONS=144} [2024-06-27 18:02:56,658 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 26 predicate places. [2024-06-27 18:02:56,658 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 144 transitions, 590 flow [2024-06-27 18:02:56,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.833333333333332) internal successors, (393), 18 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:56,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:56,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:56,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:02:56,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:56,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1311622317, now seen corresponding path program 4 times [2024-06-27 18:02:56,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:56,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682146208] [2024-06-27 18:02:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:56,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:56,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:56,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682146208] [2024-06-27 18:02:56,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682146208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:56,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:56,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:56,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181055661] [2024-06-27 18:02:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:56,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:56,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:56,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:56,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 91 [2024-06-27 18:02:56,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 144 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:56,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:56,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 91 [2024-06-27 18:02:56,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:59,389 INFO L124 PetriNetUnfolderBase]: 20511/31703 cut-off events. [2024-06-27 18:02:59,389 INFO L125 PetriNetUnfolderBase]: For 4900/5065 co-relation queries the response was YES. [2024-06-27 18:02:59,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68659 conditions, 31703 events. 20511/31703 cut-off events. For 4900/5065 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 231338 event pairs, 11505 based on Foata normal form. 429/28433 useless extension candidates. Maximal degree in co-relation 68638. Up to 20525 conditions per place. [2024-06-27 18:02:59,784 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 61 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-06-27 18:02:59,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 153 transitions, 711 flow [2024-06-27 18:02:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-06-27 18:02:59,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673992673992674 [2024-06-27 18:02:59,787 INFO L175 Difference]: Start difference. First operand has 115 places, 144 transitions, 590 flow. Second operand 3 states and 184 transitions. [2024-06-27 18:02:59,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 153 transitions, 711 flow [2024-06-27 18:02:59,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 153 transitions, 707 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:59,818 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 529 flow [2024-06-27 18:02:59,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=529, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2024-06-27 18:02:59,819 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2024-06-27 18:02:59,819 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 529 flow [2024-06-27 18:02:59,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:59,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:59,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:59,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:02:59,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:02:59,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1450003399, now seen corresponding path program 5 times [2024-06-27 18:02:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292088127] [2024-06-27 18:02:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:03:00,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:00,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292088127] [2024-06-27 18:03:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292088127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:00,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:00,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-06-27 18:03:00,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759444191] [2024-06-27 18:03:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:00,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-27 18:03:00,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:00,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-27 18:03:00,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-06-27 18:03:01,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2024-06-27 18:03:01,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 529 flow. Second operand has 19 states, 19 states have (on average 21.68421052631579) internal successors, (412), 19 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:01,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:01,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2024-06-27 18:03:01,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:03:09,795 INFO L124 PetriNetUnfolderBase]: 68721/90755 cut-off events. [2024-06-27 18:03:09,796 INFO L125 PetriNetUnfolderBase]: For 40136/40190 co-relation queries the response was YES. [2024-06-27 18:03:10,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233340 conditions, 90755 events. 68721/90755 cut-off events. For 40136/40190 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 489986 event pairs, 21955 based on Foata normal form. 37/87862 useless extension candidates. Maximal degree in co-relation 224835. Up to 76045 conditions per place. [2024-06-27 18:03:10,526 INFO L140 encePairwiseOnDemand]: 73/91 looper letters, 376 selfloop transitions, 59 changer transitions 21/469 dead transitions. [2024-06-27 18:03:10,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 469 transitions, 2402 flow [2024-06-27 18:03:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-06-27 18:03:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-06-27 18:03:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 911 transitions. [2024-06-27 18:03:10,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707773707773708 [2024-06-27 18:03:10,530 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 529 flow. Second operand 27 states and 911 transitions. [2024-06-27 18:03:10,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 469 transitions, 2402 flow [2024-06-27 18:03:11,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 469 transitions, 2396 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:03:11,250 INFO L231 Difference]: Finished difference. Result has 142 places, 181 transitions, 932 flow [2024-06-27 18:03:11,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=932, PETRI_PLACES=142, PETRI_TRANSITIONS=181} [2024-06-27 18:03:11,251 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 53 predicate places. [2024-06-27 18:03:11,251 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 181 transitions, 932 flow [2024-06-27 18:03:11,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.68421052631579) internal successors, (412), 19 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:11,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:03:11,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:03:11,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:03:11,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-06-27 18:03:11,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:03:11,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1248813425, now seen corresponding path program 6 times [2024-06-27 18:03:11,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:03:11,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466981904] [2024-06-27 18:03:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:03:11,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:03:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:03:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:03:12,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:03:12,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466981904] [2024-06-27 18:03:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466981904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:03:12,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:03:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-06-27 18:03:12,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85756926] [2024-06-27 18:03:12,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:03:12,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-27 18:03:12,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:03:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-27 18:03:12,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-06-27 18:03:12,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2024-06-27 18:03:12,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 181 transitions, 932 flow. Second operand has 19 states, 19 states have (on average 21.68421052631579) internal successors, (412), 19 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:03:12,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:03:12,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2024-06-27 18:03:12,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand