./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/14_spin2003-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/14_spin2003-pthread.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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:01:39,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:01:39,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:01:39,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:01:39,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:01:39,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:01:39,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:01:39,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:01:39,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:01:39,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:01:39,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:01:39,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:01:39,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:01:39,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:01:39,576 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:01:39,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:01:39,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:01:39,577 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:01:39,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:01:39,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:01:39,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:01:39,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:01:39,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:01:39,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:01:39,579 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:01:39,579 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:01:39,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:01:39,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:01:39,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:01:39,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:01:39,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:01:39,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:01:39,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:01:39,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:01:39,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:01:39,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:01:39,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:01:39,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:01:39,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:01:39,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:01:39,583 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:01:39,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:01:39,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:01:39,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:01:39,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:01:39,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:01:39,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:01:39,918 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:01:39,918 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:01:39,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/14_spin2003-pthread.yml/witness.yml [2024-02-07 19:01:39,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:01:39,979 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:01:39,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i [2024-02-07 19:01:41,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:01:41,472 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:01:41,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i [2024-02-07 19:01:41,487 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacd1989a/170133f6972b4f4ebcdbccf9ea2c31cd/FLAG401d1b2bd [2024-02-07 19:01:41,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacd1989a/170133f6972b4f4ebcdbccf9ea2c31cd [2024-02-07 19:01:41,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:01:41,513 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:01:41,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:01:41,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:01:41,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:01:41,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:01:39" (1/2) ... [2024-02-07 19:01:41,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c16385f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:41, skipping insertion in model container [2024-02-07 19:01:41,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:01:39" (1/2) ... [2024-02-07 19:01:41,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@668263ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:01:41, skipping insertion in model container [2024-02-07 19:01:41,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:01:41" (2/2) ... [2024-02-07 19:01:41,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c16385f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:41, skipping insertion in model container [2024-02-07 19:01:41,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:01:41" (2/2) ... [2024-02-07 19:01:41,549 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:01:41,585 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:01:41,586 INFO L76 edCorrectnessWitness]: Location invariant before [L690-L690] x == 0 [2024-02-07 19:01:41,587 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] x == 1 [2024-02-07 19:01:41,651 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:01:41,919 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i[30427,30440] [2024-02-07 19:01:41,927 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:01:41,937 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-02-07 19:01:41,984 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003-pthread.i[30427,30440] [2024-02-07 19:01:41,986 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:01:42,017 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:01:42,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42 WrapperNode [2024-02-07 19:01:42,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:01:42,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:01:42,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:01:42,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:01:42,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,046 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-02-07 19:01:42,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:01:42,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:01:42,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:01:42,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:01:42,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,068 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-02-07 19:01:42,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:01:42,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:01:42,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:01:42,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:01:42,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (1/1) ... [2024-02-07 19:01:42,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:01:42,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:01:42,105 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) [2024-02-07 19:01:42,123 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 [2024-02-07 19:01:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-07 19:01:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-07 19:01:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:01:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:01:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:01:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:01:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:01:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:01:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:01:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:01:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:01:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:01:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:01:42,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:01:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:01:42,176 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:01:42,426 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:01:42,429 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:01:42,563 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:01:42,563 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:01:42,635 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:01:42,635 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-07 19:01:42,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:01:42 BoogieIcfgContainer [2024-02-07 19:01:42,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:01:42,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:01:42,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:01:42,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:01:42,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:01:39" (1/4) ... [2024-02-07 19:01:42,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f3d24a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:01:42, skipping insertion in model container [2024-02-07 19:01:42,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:01:41" (2/4) ... [2024-02-07 19:01:42,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f3d24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:01:42, skipping insertion in model container [2024-02-07 19:01:42,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:01:42" (3/4) ... [2024-02-07 19:01:42,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f3d24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:01:42, skipping insertion in model container [2024-02-07 19:01:42,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:01:42" (4/4) ... [2024-02-07 19:01:42,646 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003-pthread.i [2024-02-07 19:01:42,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:01:42,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-02-07 19:01:42,659 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:01:42,692 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:42,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 18 transitions, 40 flow [2024-02-07 19:01:42,764 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2024-02-07 19:01:42,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:01:42,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 1/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-02-07 19:01:42,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 18 transitions, 40 flow [2024-02-07 19:01:42,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 18 transitions, 40 flow [2024-02-07 19:01:42,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:42,811 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;@86fcd57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:42,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-02-07 19:01:42,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:42,825 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-02-07 19:01:42,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:01:42,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:42,827 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-02-07 19:01:42,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-02-07 19:01:42,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash 139105346, now seen corresponding path program 1 times [2024-02-07 19:01:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:42,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168119480] [2024-02-07 19:01:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:42,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:42,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:01:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:43,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:01:43,051 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:01:43,052 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-02-07 19:01:43,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-02-07 19:01:43,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-02-07 19:01:43,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-02-07 19:01:43,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 7 remaining) [2024-02-07 19:01:43,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 7 remaining) [2024-02-07 19:01:43,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-02-07 19:01:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:01:43,057 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-02-07 19:01:43,063 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:01:43,065 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:01:43,089 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:43,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 74 flow [2024-02-07 19:01:43,109 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-02-07 19:01:43,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:01:43,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 36 events. 2/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2024-02-07 19:01:43,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 74 flow [2024-02-07 19:01:43,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 74 flow [2024-02-07 19:01:43,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:43,113 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;@86fcd57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:43,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-02-07 19:01:43,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:43,124 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-02-07 19:01:43,124 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:01:43,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:43,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-02-07 19:01:43,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2024-02-07 19:01:43,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash -169707678, now seen corresponding path program 1 times [2024-02-07 19:01:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:43,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235924257] [2024-02-07 19:01:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:43,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:43,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:01:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:43,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:01:43,208 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:01:43,208 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-02-07 19:01:43,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 10 remaining) [2024-02-07 19:01:43,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 10 remaining) [2024-02-07 19:01:43,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2024-02-07 19:01:43,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 10 remaining) [2024-02-07 19:01:43,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 10 remaining) [2024-02-07 19:01:43,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2024-02-07 19:01:43,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 10 remaining) [2024-02-07 19:01:43,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 10 remaining) [2024-02-07 19:01:43,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2024-02-07 19:01:43,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:01:43,215 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-02-07 19:01:43,216 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:01:43,216 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:01:43,240 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:43,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 110 flow [2024-02-07 19:01:43,259 INFO L124 PetriNetUnfolderBase]: 3/52 cut-off events. [2024-02-07 19:01:43,259 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-07 19:01:43,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 3/52 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2024-02-07 19:01:43,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 110 flow [2024-02-07 19:01:43,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 46 transitions, 110 flow [2024-02-07 19:01:43,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:43,263 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;@86fcd57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:43,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-02-07 19:01:43,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:43,267 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-02-07 19:01:43,267 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 19:01:43,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:43,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:43,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2024-02-07 19:01:43,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash -920694059, now seen corresponding path program 1 times [2024-02-07 19:01:43,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:43,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518319972] [2024-02-07 19:01:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:43,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:01:43,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:43,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518319972] [2024-02-07 19:01:43,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518319972] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:43,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401768695] [2024-02-07 19:01:43,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:43,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:43,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:43,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-02-07 19:01:43,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:43,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:43,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-02-07 19:01:43,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:44,190 INFO L124 PetriNetUnfolderBase]: 3811/6238 cut-off events. [2024-02-07 19:01:44,191 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-02-07 19:01:44,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12346 conditions, 6238 events. 3811/6238 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 38997 event pairs, 2768 based on Foata normal form. 812/6629 useless extension candidates. Maximal degree in co-relation 4638. Up to 4667 conditions per place. [2024-02-07 19:01:44,265 INFO L140 encePairwiseOnDemand]: 27/46 looper letters, 41 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-02-07 19:01:44,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 244 flow [2024-02-07 19:01:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:44,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-02-07 19:01:44,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2024-02-07 19:01:44,276 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 110 flow. Second operand 3 states and 103 transitions. [2024-02-07 19:01:44,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 244 flow [2024-02-07 19:01:44,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 240 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-07 19:01:44,286 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 166 flow [2024-02-07 19:01:44,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-02-07 19:01:44,291 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2024-02-07 19:01:44,291 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 166 flow [2024-02-07 19:01:44,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:44,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:44,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:44,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:01:44,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2024-02-07 19:01:44,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1523255488, now seen corresponding path program 1 times [2024-02-07 19:01:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:44,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924429755] [2024-02-07 19:01:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:44,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:01:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924429755] [2024-02-07 19:01:44,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924429755] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:44,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:44,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:44,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605428062] [2024-02-07 19:01:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:44,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:44,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:44,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-02-07 19:01:44,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:44,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:44,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-02-07 19:01:44,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:45,049 INFO L124 PetriNetUnfolderBase]: 3724/6777 cut-off events. [2024-02-07 19:01:45,049 INFO L125 PetriNetUnfolderBase]: For 3229/3387 co-relation queries the response was YES. [2024-02-07 19:01:45,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17185 conditions, 6777 events. 3724/6777 cut-off events. For 3229/3387 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 50490 event pairs, 2873 based on Foata normal form. 1696/8354 useless extension candidates. Maximal degree in co-relation 15700. Up to 4091 conditions per place. [2024-02-07 19:01:45,083 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 37 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-02-07 19:01:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 276 flow [2024-02-07 19:01:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-02-07 19:01:45,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-02-07 19:01:45,086 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 166 flow. Second operand 3 states and 92 transitions. [2024-02-07 19:01:45,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 276 flow [2024-02-07 19:01:45,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:01:45,096 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 175 flow [2024-02-07 19:01:45,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-02-07 19:01:45,098 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-02-07 19:01:45,098 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 175 flow [2024-02-07 19:01:45,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:45,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:45,098 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2024-02-07 19:01:45,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:01:45,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2024-02-07 19:01:45,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:45,101 INFO L85 PathProgramCache]: Analyzing trace with hash -657976917, now seen corresponding path program 1 times [2024-02-07 19:01:45,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:45,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088457176] [2024-02-07 19:01:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:45,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:45,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:01:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:45,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:01:45,148 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:01:45,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-02-07 19:01:45,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 13 remaining) [2024-02-07 19:01:45,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2024-02-07 19:01:45,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 13 remaining) [2024-02-07 19:01:45,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 13 remaining) [2024-02-07 19:01:45,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2024-02-07 19:01:45,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:01:45,150 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-07 19:01:45,151 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:01:45,151 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-02-07 19:01:45,167 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:45,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 148 flow [2024-02-07 19:01:45,173 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2024-02-07 19:01:45,173 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-07 19:01:45,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 68 events. 4/68 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 208 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 5 conditions per place. [2024-02-07 19:01:45,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 148 flow [2024-02-07 19:01:45,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 60 transitions, 148 flow [2024-02-07 19:01:45,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:45,176 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;@86fcd57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:45,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-02-07 19:01:45,178 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:45,178 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-02-07 19:01:45,178 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 19:01:45,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:45,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:45,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2024-02-07 19:01:45,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:45,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1717634722, now seen corresponding path program 1 times [2024-02-07 19:01:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356471020] [2024-02-07 19:01:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:01:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356471020] [2024-02-07 19:01:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356471020] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:45,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:45,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:45,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47972273] [2024-02-07 19:01:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:45,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:01:45,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:45,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:45,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:01:45,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:50,263 INFO L124 PetriNetUnfolderBase]: 52935/76377 cut-off events. [2024-02-07 19:01:50,264 INFO L125 PetriNetUnfolderBase]: For 9756/9756 co-relation queries the response was YES. [2024-02-07 19:01:50,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153322 conditions, 76377 events. 52935/76377 cut-off events. For 9756/9756 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 547678 event pairs, 37038 based on Foata normal form. 11513/82085 useless extension candidates. Maximal degree in co-relation 22764. Up to 56549 conditions per place. [2024-02-07 19:01:50,885 INFO L140 encePairwiseOnDemand]: 35/60 looper letters, 54 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2024-02-07 19:01:50,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 331 flow [2024-02-07 19:01:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-02-07 19:01:50,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-02-07 19:01:50,891 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 148 flow. Second operand 3 states and 135 transitions. [2024-02-07 19:01:50,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 331 flow [2024-02-07 19:01:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 319 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-02-07 19:01:50,907 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 220 flow [2024-02-07 19:01:50,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-02-07 19:01:50,911 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-02-07 19:01:50,911 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 220 flow [2024-02-07 19:01:50,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:50,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:50,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:01:50,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2024-02-07 19:01:50,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1707068512, now seen corresponding path program 1 times [2024-02-07 19:01:50,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:50,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178682903] [2024-02-07 19:01:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:50,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:01:50,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178682903] [2024-02-07 19:01:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178682903] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:50,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:50,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:50,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679808098] [2024-02-07 19:01:50,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:50,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:50,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:50,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:50,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:01:50,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:50,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:50,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:01:50,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:58,609 INFO L124 PetriNetUnfolderBase]: 66964/106415 cut-off events. [2024-02-07 19:01:58,609 INFO L125 PetriNetUnfolderBase]: For 59074/61367 co-relation queries the response was YES. [2024-02-07 19:01:58,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270995 conditions, 106415 events. 66964/106415 cut-off events. For 59074/61367 co-relation queries the response was YES. Maximal size of possible extension queue 4514. Compared 961743 event pairs, 50471 based on Foata normal form. 26024/129668 useless extension candidates. Maximal degree in co-relation 248817. Up to 59607 conditions per place. [2024-02-07 19:01:59,519 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 49 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-02-07 19:01:59,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 367 flow [2024-02-07 19:01:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-02-07 19:01:59,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-02-07 19:01:59,522 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 220 flow. Second operand 3 states and 121 transitions. [2024-02-07 19:01:59,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 367 flow [2024-02-07 19:01:59,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:01:59,643 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 231 flow [2024-02-07 19:01:59,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-02-07 19:01:59,645 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-02-07 19:01:59,645 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 231 flow [2024-02-07 19:01:59,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:59,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:59,646 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:59,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:01:59,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2024-02-07 19:01:59,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash 240110557, now seen corresponding path program 1 times [2024-02-07 19:01:59,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:59,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980397774] [2024-02-07 19:01:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:59,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:01:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:59,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:01:59,689 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:01:59,689 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-02-07 19:01:59,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 16 remaining) [2024-02-07 19:01:59,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 16 remaining) [2024-02-07 19:01:59,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (12 of 16 remaining) [2024-02-07 19:01:59,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 16 remaining) [2024-02-07 19:01:59,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 16 remaining) [2024-02-07 19:01:59,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (9 of 16 remaining) [2024-02-07 19:01:59,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 16 remaining) [2024-02-07 19:01:59,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 16 remaining) [2024-02-07 19:01:59,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (6 of 16 remaining) [2024-02-07 19:01:59,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 16 remaining) [2024-02-07 19:01:59,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 16 remaining) [2024-02-07 19:01:59,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (3 of 16 remaining) [2024-02-07 19:01:59,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 16 remaining) [2024-02-07 19:01:59,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 16 remaining) [2024-02-07 19:01:59,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 16 remaining) [2024-02-07 19:01:59,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:01:59,692 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-07 19:01:59,693 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:01:59,693 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-02-07 19:01:59,726 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:59,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 188 flow [2024-02-07 19:01:59,738 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2024-02-07 19:01:59,739 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-02-07 19:01:59,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 84 events. 5/84 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 287 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 85. Up to 6 conditions per place. [2024-02-07 19:01:59,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 74 transitions, 188 flow [2024-02-07 19:01:59,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 74 transitions, 188 flow [2024-02-07 19:01:59,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:59,744 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;@86fcd57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:59,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-02-07 19:01:59,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:59,749 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-02-07 19:01:59,749 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 19:01:59,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:59,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:59,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2024-02-07 19:01:59,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1733909557, now seen corresponding path program 1 times [2024-02-07 19:01:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:59,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095261040] [2024-02-07 19:01:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:59,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:01:59,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:59,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095261040] [2024-02-07 19:01:59,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095261040] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:59,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:59,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092567888] [2024-02-07 19:01:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:59,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:59,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 74 [2024-02-07 19:01:59,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:01:59,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:59,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 74 [2024-02-07 19:01:59,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand