./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.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/lazy01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/lazy01.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/lazy01.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-dev-958ec4d-m [2024-02-07 14:43:38,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:43:38,612 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:43:38,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:43:38,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:43:38,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:43:38,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:43:38,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:43:38,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:43:38,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:43:38,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:43:38,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:43:38,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:43:38,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:43:38,650 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:43:38,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:43:38,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:43:38,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:43:38,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:43:38,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:43:38,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:43:38,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:43:38,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:43:38,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:43:38,652 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:43:38,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:43:38,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:43:38,653 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:43:38,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:43:38,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:43:38,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:43:38,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:43:38,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:43:38,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:43:38,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:43:38,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:43:38,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:43:38,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:43:38,656 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:43:38,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:43:38,656 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:43:38,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:43:38,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:43:38,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:43:38,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:43:38,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:43:38,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:43:38,883 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:43:38,884 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:43:38,885 INFO L431 ainManager$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/lazy01.yml/witness.yml [2024-02-07 14:43:39,003 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:43:39,004 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:43:39,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2024-02-07 14:43:40,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:43:40,395 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:43:40,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2024-02-07 14:43:40,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159444348/5059d668719c4d55a32d2b62776c1cbc/FLAG36d1552a1 [2024-02-07 14:43:40,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/159444348/5059d668719c4d55a32d2b62776c1cbc [2024-02-07 14:43:40,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:43:40,418 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:43:40,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:43:40,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:43:40,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:43:40,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:39" (1/2) ... [2024-02-07 14:43:40,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63de0bfd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:40, skipping insertion in model container [2024-02-07 14:43:40,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:39" (1/2) ... [2024-02-07 14:43:40,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26051ded and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:40, skipping insertion in model container [2024-02-07 14:43:40,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:43:40" (2/2) ... [2024-02-07 14:43:40,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63de0bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40, skipping insertion in model container [2024-02-07 14:43:40,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:43:40" (2/2) ... [2024-02-07 14:43:40,428 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:43:40,448 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:43:40,450 INFO L76 edCorrectnessWitness]: Location invariant before [L721-L721] 0 <= data [2024-02-07 14:43:40,450 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] 1 <= data [2024-02-07 14:43:40,450 INFO L76 edCorrectnessWitness]: Location invariant before [L715-L715] 2 <= data [2024-02-07 14:43:40,450 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] 0 <= data [2024-02-07 14:43:40,450 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] 0 <= data [2024-02-07 14:43:40,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:43:40,818 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/lazy01.i[31042,31055] [2024-02-07 14:43:40,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:43:40,839 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:43:40,918 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/lazy01.i[31042,31055] [2024-02-07 14:43:40,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:43:40,961 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:43:40,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40 WrapperNode [2024-02-07 14:43:40,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:43:40,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:43:40,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:43:40,963 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:43:40,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:40,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,026 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2024-02-07 14:43:41,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:43:41,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:43:41,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:43:41,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:43:41,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,089 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 2, 5, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0, 0]. The 3 writes are split as follows [0, 1, 0, 1, 1]. [2024-02-07 14:43:41,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:43:41,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:43:41,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:43:41,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:43:41,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (1/1) ... [2024-02-07 14:43:41,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:43:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:41,195 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 14:43:41,216 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 14:43:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:43:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:43:41,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:43:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:43:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:43:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:43:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:43:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:43:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:43:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:43:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:43:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:43:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:43:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:43:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:43:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:43:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:43:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:43:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:43:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:43:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:43:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:43:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:43:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:43:41,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:43:41,255 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:43:41,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:43:41,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:43:41,259 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 14:43:41,423 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:43:41,427 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:43:41,713 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:43:41,715 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:43:41,913 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:43:41,913 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:43:41,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:43:41 BoogieIcfgContainer [2024-02-07 14:43:41,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:43:41,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:43:41,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:43:41,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:43:41,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:39" (1/4) ... [2024-02-07 14:43:41,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d66048 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:43:41, skipping insertion in model container [2024-02-07 14:43:41,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:43:40" (2/4) ... [2024-02-07 14:43:41,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d66048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:43:41, skipping insertion in model container [2024-02-07 14:43:41,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:40" (3/4) ... [2024-02-07 14:43:41,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d66048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:43:41, skipping insertion in model container [2024-02-07 14:43:41,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:43:41" (4/4) ... [2024-02-07 14:43:41,934 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-02-07 14:43:41,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:43:41,961 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-02-07 14:43:41,961 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:43:42,050 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:43:42,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 111 flow [2024-02-07 14:43:42,165 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-02-07 14:43:42,165 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-07 14:43:42,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 1/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-02-07 14:43:42,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 111 flow [2024-02-07 14:43:42,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 40 transitions, 95 flow [2024-02-07 14:43:42,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:43:42,195 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;@432a11d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:43:42,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-02-07 14:43:42,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:43:42,199 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:43:42,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:43:42,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:42,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:43:42,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:42,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1304738165, now seen corresponding path program 1 times [2024-02-07 14:43:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:42,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174502092] [2024-02-07 14:43:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:42,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:42,587 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 14:43:42,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174502092] [2024-02-07 14:43:42,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174502092] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:42,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:42,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:43:42,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696625466] [2024-02-07 14:43:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:42,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:42,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:42,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-02-07 14:43:42,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 14:43:42,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:42,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-02-07 14:43:42,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:42,822 INFO L124 PetriNetUnfolderBase]: 1125/1825 cut-off events. [2024-02-07 14:43:42,822 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-02-07 14:43:42,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3684 conditions, 1825 events. 1125/1825 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9645 event pairs, 1125 based on Foata normal form. 86/1864 useless extension candidates. Maximal degree in co-relation 3203. Up to 1726 conditions per place. [2024-02-07 14:43:42,838 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 25 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-02-07 14:43:42,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 139 flow [2024-02-07 14:43:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-02-07 14:43:42,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-02-07 14:43:42,849 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 95 flow. Second operand 3 states and 69 transitions. [2024-02-07 14:43:42,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 139 flow [2024-02-07 14:43:42,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 130 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-07 14:43:42,856 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 80 flow [2024-02-07 14:43:42,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-02-07 14:43:42,860 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-02-07 14:43:42,861 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 80 flow [2024-02-07 14:43:42,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 14:43:42,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:42,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:42,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:43:42,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:42,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:42,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1792177190, now seen corresponding path program 1 times [2024-02-07 14:43:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:42,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739674893] [2024-02-07 14:43:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:42,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:43:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739674893] [2024-02-07 14:43:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739674893] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:42,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:42,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559224947] [2024-02-07 14:43:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:42,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:43:42,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:42,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:43:42,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:43:43,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-02-07 14:43:43,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 14:43:43,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:43,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-02-07 14:43:43,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:43,181 INFO L124 PetriNetUnfolderBase]: 1125/1894 cut-off events. [2024-02-07 14:43:43,182 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-02-07 14:43:43,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3703 conditions, 1894 events. 1125/1894 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10436 event pairs, 349 based on Foata normal form. 0/1877 useless extension candidates. Maximal degree in co-relation 3697. Up to 1610 conditions per place. [2024-02-07 14:43:43,194 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 36 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-02-07 14:43:43,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 189 flow [2024-02-07 14:43:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:43:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:43:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-02-07 14:43:43,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-02-07 14:43:43,202 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 80 flow. Second operand 4 states and 89 transitions. [2024-02-07 14:43:43,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 189 flow [2024-02-07 14:43:43,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:43,204 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 101 flow [2024-02-07 14:43:43,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-02-07 14:43:43,205 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-02-07 14:43:43,205 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 101 flow [2024-02-07 14:43:43,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 14:43:43,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:43,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:43:43,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:43,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1670916162, now seen corresponding path program 1 times [2024-02-07 14:43:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458508018] [2024-02-07 14:43:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:43,244 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 14:43:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:43,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458508018] [2024-02-07 14:43:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458508018] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:43,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360675306] [2024-02-07 14:43:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:43,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:43:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:43:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:43:43,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-02-07 14:43:43,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:43,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:43,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-02-07 14:43:43,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:43,403 INFO L124 PetriNetUnfolderBase]: 1125/1836 cut-off events. [2024-02-07 14:43:43,404 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-02-07 14:43:43,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 1836 events. 1125/1836 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9722 event pairs, 309 based on Foata normal form. 0/1804 useless extension candidates. Maximal degree in co-relation 3965. Up to 1284 conditions per place. [2024-02-07 14:43:43,411 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 36 selfloop transitions, 5 changer transitions 4/53 dead transitions. [2024-02-07 14:43:43,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 228 flow [2024-02-07 14:43:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:43:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:43:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-02-07 14:43:43,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-02-07 14:43:43,413 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 101 flow. Second operand 4 states and 88 transitions. [2024-02-07 14:43:43,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 228 flow [2024-02-07 14:43:43,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:43,415 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 121 flow [2024-02-07 14:43:43,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-02-07 14:43:43,415 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-02-07 14:43:43,416 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 121 flow [2024-02-07 14:43:43,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:43:43,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:43,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:43,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:43:43,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:43,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:43,417 INFO L85 PathProgramCache]: Analyzing trace with hash -996542815, now seen corresponding path program 1 times [2024-02-07 14:43:43,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:43,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763566864] [2024-02-07 14:43:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:43,449 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 14:43:43,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:43,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763566864] [2024-02-07 14:43:43,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763566864] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:43,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:43,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:43,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401112935] [2024-02-07 14:43:43,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:43,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:43,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:43,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:43,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-02-07 14:43:43,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 14:43:43,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:43,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-02-07 14:43:43,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:43,558 INFO L124 PetriNetUnfolderBase]: 565/974 cut-off events. [2024-02-07 14:43:43,558 INFO L125 PetriNetUnfolderBase]: For 402/423 co-relation queries the response was YES. [2024-02-07 14:43:43,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 974 events. 565/974 cut-off events. For 402/423 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4796 event pairs, 207 based on Foata normal form. 13/978 useless extension candidates. Maximal degree in co-relation 2339. Up to 845 conditions per place. [2024-02-07 14:43:43,563 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 32 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-02-07 14:43:43,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 202 flow [2024-02-07 14:43:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-02-07 14:43:43,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-02-07 14:43:43,565 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 121 flow. Second operand 3 states and 76 transitions. [2024-02-07 14:43:43,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 202 flow [2024-02-07 14:43:43,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:43,567 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 118 flow [2024-02-07 14:43:43,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-02-07 14:43:43,568 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-02-07 14:43:43,568 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 118 flow [2024-02-07 14:43:43,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 14:43:43,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:43,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:43,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:43:43,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:43,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1645122780, now seen corresponding path program 1 times [2024-02-07 14:43:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:43,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997248546] [2024-02-07 14:43:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:43,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:43,628 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 14:43:43,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997248546] [2024-02-07 14:43:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997248546] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:43,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:43,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:43:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340337249] [2024-02-07 14:43:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:43,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:43,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-02-07 14:43:43,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 118 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 14:43:43,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:43,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-02-07 14:43:43,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:43,731 INFO L124 PetriNetUnfolderBase]: 139/461 cut-off events. [2024-02-07 14:43:43,732 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2024-02-07 14:43:43,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 461 events. 139/461 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2399 event pairs, 40 based on Foata normal form. 58/513 useless extension candidates. Maximal degree in co-relation 909. Up to 173 conditions per place. [2024-02-07 14:43:43,734 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 28 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-02-07 14:43:43,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 205 flow [2024-02-07 14:43:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:43,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-02-07 14:43:43,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962962962962963 [2024-02-07 14:43:43,736 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 118 flow. Second operand 3 states and 94 transitions. [2024-02-07 14:43:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 205 flow [2024-02-07 14:43:43,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:43,739 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 116 flow [2024-02-07 14:43:43,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-02-07 14:43:43,741 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-02-07 14:43:43,742 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 116 flow [2024-02-07 14:43:43,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 14:43:43,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:43,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:43:43,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:43,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1708067653, now seen corresponding path program 1 times [2024-02-07 14:43:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:43,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934688681] [2024-02-07 14:43:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:43,819 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 14:43:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:43,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934688681] [2024-02-07 14:43:43,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934688681] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:43,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:43,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:43:43,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671726573] [2024-02-07 14:43:43,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:43,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:43:43,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:43:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:43:43,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-02-07 14:43:43,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:43:43,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:43,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-02-07 14:43:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:43,913 INFO L124 PetriNetUnfolderBase]: 193/475 cut-off events. [2024-02-07 14:43:43,914 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-02-07 14:43:43,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 475 events. 193/475 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2176 event pairs, 51 based on Foata normal form. 5/475 useless extension candidates. Maximal degree in co-relation 1090. Up to 265 conditions per place. [2024-02-07 14:43:43,916 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 36 selfloop transitions, 4 changer transitions 2/51 dead transitions. [2024-02-07 14:43:43,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 243 flow [2024-02-07 14:43:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:43:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:43:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-02-07 14:43:43,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-02-07 14:43:43,918 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 116 flow. Second operand 4 states and 91 transitions. [2024-02-07 14:43:43,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 243 flow [2024-02-07 14:43:43,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:43,919 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 109 flow [2024-02-07 14:43:43,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-02-07 14:43:43,922 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2024-02-07 14:43:43,922 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 109 flow [2024-02-07 14:43:43,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:43:43,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:43,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:43:43,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:43,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1469516351, now seen corresponding path program 1 times [2024-02-07 14:43:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:43,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805658167] [2024-02-07 14:43:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:43,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:43,982 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 14:43:43,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:43,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805658167] [2024-02-07 14:43:43,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805658167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:43,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:43,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:43:43,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934098852] [2024-02-07 14:43:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:44,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:43:44,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:43:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:43:44,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-02-07 14:43:44,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 14:43:44,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:44,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-02-07 14:43:44,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:44,154 INFO L124 PetriNetUnfolderBase]: 220/499 cut-off events. [2024-02-07 14:43:44,155 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-02-07 14:43:44,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 499 events. 220/499 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2199 event pairs, 56 based on Foata normal form. 4/495 useless extension candidates. Maximal degree in co-relation 1121. Up to 203 conditions per place. [2024-02-07 14:43:44,157 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 38 selfloop transitions, 5 changer transitions 7/58 dead transitions. [2024-02-07 14:43:44,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 270 flow [2024-02-07 14:43:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:43:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:43:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-02-07 14:43:44,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-02-07 14:43:44,158 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 109 flow. Second operand 4 states and 95 transitions. [2024-02-07 14:43:44,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 270 flow [2024-02-07 14:43:44,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 262 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:44,159 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 115 flow [2024-02-07 14:43:44,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-02-07 14:43:44,160 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-02-07 14:43:44,160 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 115 flow [2024-02-07 14:43:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 14:43:44,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:44,160 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] [2024-02-07 14:43:44,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:43:44,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:43:44,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:44,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1386272759, now seen corresponding path program 1 times [2024-02-07 14:43:44,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:44,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869511813] [2024-02-07 14:43:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:43:44,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:43:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:43:44,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:43:44,207 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:43:44,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err1ASSERT_VIOLATIONERROR_FUNCTION (14 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONERROR_FUNCTION (8 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 15 remaining) [2024-02-07 14:43:44,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 15 remaining) [2024-02-07 14:43:44,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 15 remaining) [2024-02-07 14:43:44,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 15 remaining) [2024-02-07 14:43:44,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 15 remaining) [2024-02-07 14:43:44,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 15 remaining) [2024-02-07 14:43:44,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 15 remaining) [2024-02-07 14:43:44,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 15 remaining) [2024-02-07 14:43:44,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:43:44,210 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:44,215 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:43:44,215 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:43:44,243 INFO L503 ceAbstractionStarter]: Automizer considered 5 witness invariants [2024-02-07 14:43:44,244 INFO L504 ceAbstractionStarter]: WitnessConsidered=5 [2024-02-07 14:43:44,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:43:44 BasicIcfg [2024-02-07 14:43:44,244 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:43:44,245 INFO L158 Benchmark]: Toolchain (without parser) took 3826.77ms. Allocated memory was 132.1MB in the beginning and 230.7MB in the end (delta: 98.6MB). Free memory was 57.9MB in the beginning and 158.7MB in the end (delta: -100.9MB). Peak memory consumption was 592.3kB. Max. memory is 16.1GB. [2024-02-07 14:43:44,245 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:43:44,245 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 132.1MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:43:44,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.43ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 57.6MB in the beginning and 126.4MB in the end (delta: -68.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2024-02-07 14:43:44,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.48ms. Allocated memory is still 169.9MB. Free memory was 126.4MB in the beginning and 124.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:43:44,245 INFO L158 Benchmark]: Boogie Preprocessor took 110.30ms. Allocated memory is still 169.9MB. Free memory was 124.3MB in the beginning and 122.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:43:44,246 INFO L158 Benchmark]: RCFGBuilder took 771.05ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 93.9MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-02-07 14:43:44,246 INFO L158 Benchmark]: TraceAbstraction took 2327.37ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 92.8MB in the beginning and 158.7MB in the end (delta: -65.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:43:44,247 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 132.1MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.43ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 57.6MB in the beginning and 126.4MB in the end (delta: -68.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.48ms. Allocated memory is still 169.9MB. Free memory was 126.4MB in the beginning and 124.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.30ms. Allocated memory is still 169.9MB. Free memory was 124.3MB in the beginning and 122.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 771.05ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 93.9MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2327.37ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 92.8MB in the beginning and 158.7MB in the end (delta: -65.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[2],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 79 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 240 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 412 IncrementalHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 16 mSDtfsCounter, 412 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-07 14:43:44,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE