./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy7.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy7.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 14:52:54,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:52:54,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:52:54,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:52:54,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:52:54,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:52:54,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:52:54,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:52:54,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:52:54,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:52:54,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:52:54,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:52:54,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:52:54,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:52:54,182 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:52:54,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:52:54,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:52:54,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:52:54,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:52:54,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:52:54,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:52:54,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:52:54,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:52:54,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:52:54,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:52:54,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:52:54,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:52:54,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:52:54,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:52:54,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:52:54,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:52:54,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:52:54,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:52:54,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:52:54,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:52:54,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:52:54,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:52:54,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:52:54,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:52:54,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:52:54,188 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:52:54,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:52:54,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:52:54,189 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:52:54,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:52:54,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:52:54,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:52:54,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:52:54,410 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:52:54,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy7.wvr.c [2024-01-27 14:52:55,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:52:55,618 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:52:55,619 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c [2024-01-27 14:52:55,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d198cba8/9a34bae9e6754f4d8f5b495d59dfaa85/FLAG6d1a43ce3 [2024-01-27 14:52:55,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d198cba8/9a34bae9e6754f4d8f5b495d59dfaa85 [2024-01-27 14:52:55,638 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:52:55,638 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:52:55,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-easy7.wvr.yml/witness.yml [2024-01-27 14:52:55,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:52:55,717 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:52:55,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:52:55,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:52:55,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:52:55,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:52:55" (1/2) ... [2024-01-27 14:52:55,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290c7ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:52:55, skipping insertion in model container [2024-01-27 14:52:55,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:52:55" (1/2) ... [2024-01-27 14:52:55,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7aef2527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:52:55, skipping insertion in model container [2024-01-27 14:52:55,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:52:55" (2/2) ... [2024-01-27 14:52:55,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290c7ee1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55, skipping insertion in model container [2024-01-27 14:52:55,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:52:55" (2/2) ... [2024-01-27 14:52:55,726 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:52:55,741 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:52:55,745 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,745 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,746 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] x2 == 0U [2024-01-27 14:52:55,746 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,746 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] x2 == 0U [2024-01-27 14:52:55,746 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,746 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,746 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,746 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x2 == 0U [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )x1 - (long long )x2 >= 0LL [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (long long )x1 + (long long )x2 >= 0LL [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] x1 == 0U [2024-01-27 14:52:55,747 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )x1) + (long long )x2 >= 0LL [2024-01-27 14:52:55,748 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (0LL - (long long )x1) - (long long )x2 >= 0LL [2024-01-27 14:52:55,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:52:55,917 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1898,1911] [2024-01-27 14:52:55,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:52:55,930 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:52:55,978 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy7.wvr.c[1898,1911] [2024-01-27 14:52:55,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:52:55,992 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:52:55,993 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55 WrapperNode [2024-01-27 14:52:55,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:52:55,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:52:55,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:52:55,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:52:56,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,021 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-01-27 14:52:56,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:52:56,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:52:56,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:52:56,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:52:56,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,049 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 14:52:56,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:52:56,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:52:56,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:52:56,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:52:56,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (1/1) ... [2024-01-27 14:52:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:52:56,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:52:56,104 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) [2024-01-27 14:52:56,118 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 [2024-01-27 14:52:56,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:52:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:52:56,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:52:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:52:56,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:52:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:52:56,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:52:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:52:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:52:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:52:56,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:52:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:52:56,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:52:56,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:52:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:52:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:52:56,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:52:56,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:52:56,160 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:52:56,243 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:52:56,245 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:52:56,439 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:52:56,439 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:52:56,558 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:52:56,559 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 14:52:56,559 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:52:56 BoogieIcfgContainer [2024-01-27 14:52:56,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:52:56,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:52:56,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:52:56,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:52:56,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:52:55" (1/4) ... [2024-01-27 14:52:56,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02c390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:52:56, skipping insertion in model container [2024-01-27 14:52:56,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:52:55" (2/4) ... [2024-01-27 14:52:56,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02c390 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:52:56, skipping insertion in model container [2024-01-27 14:52:56,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:55" (3/4) ... [2024-01-27 14:52:56,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02c390 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:52:56, skipping insertion in model container [2024-01-27 14:52:56,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:52:56" (4/4) ... [2024-01-27 14:52:56,572 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2024-01-27 14:52:56,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:52:56,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-01-27 14:52:56,589 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:52:56,638 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 14:52:56,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 51 transitions, 116 flow [2024-01-27 14:52:56,723 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-01-27 14:52:56,723 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:52:56,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 49 events. 0/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 14:52:56,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 51 transitions, 116 flow [2024-01-27 14:52:56,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 48 transitions, 108 flow [2024-01-27 14:52:56,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:52:56,754 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;@5f12192d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:52:56,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-01-27 14:52:56,755 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:52:56,756 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:52:56,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:52:56,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:56,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:52:56,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 29 more)] === [2024-01-27 14:52:56,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash 8563, now seen corresponding path program 1 times [2024-01-27 14:52:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:56,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539320119] [2024-01-27 14:52:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:56,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:56,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539320119] [2024-01-27 14:52:57,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539320119] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:57,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:57,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827318517] [2024-01-27 14:52:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:57,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:57,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-01-27 14:52:57,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:57,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-01-27 14:52:57,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:57,180 INFO L124 PetriNetUnfolderBase]: 123/310 cut-off events. [2024-01-27 14:52:57,180 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-27 14:52:57,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 310 events. 123/310 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1432 event pairs, 123 based on Foata normal form. 5/291 useless extension candidates. Maximal degree in co-relation 499. Up to 239 conditions per place. [2024-01-27 14:52:57,188 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 21 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-01-27 14:52:57,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 142 flow [2024-01-27 14:52:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-01-27 14:52:57,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-01-27 14:52:57,202 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 108 flow. Second operand 3 states and 92 transitions. [2024-01-27 14:52:57,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 142 flow [2024-01-27 14:52:57,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:52:57,210 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 92 flow [2024-01-27 14:52:57,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-01-27 14:52:57,216 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2024-01-27 14:52:57,217 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 92 flow [2024-01-27 14:52:57,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:57,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:57,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:52:57,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 29 more)] === [2024-01-27 14:52:57,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash 724911810, now seen corresponding path program 1 times [2024-01-27 14:52:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:57,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579181767] [2024-01-27 14:52:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:57,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:57,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:57,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579181767] [2024-01-27 14:52:57,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579181767] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:57,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:57,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:52:57,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230972642] [2024-01-27 14:52:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:57,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:57,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:57,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:57,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-01-27 14:52:57,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:57,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-01-27 14:52:57,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:57,385 INFO L124 PetriNetUnfolderBase]: 123/309 cut-off events. [2024-01-27 14:52:57,386 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 14:52:57,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 309 events. 123/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1428 event pairs, 123 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 546. Up to 237 conditions per place. [2024-01-27 14:52:57,394 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 21 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-01-27 14:52:57,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 136 flow [2024-01-27 14:52:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-01-27 14:52:57,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-01-27 14:52:57,398 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 92 flow. Second operand 3 states and 93 transitions. [2024-01-27 14:52:57,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 136 flow [2024-01-27 14:52:57,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:57,400 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 90 flow [2024-01-27 14:52:57,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-01-27 14:52:57,401 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -9 predicate places. [2024-01-27 14:52:57,401 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 90 flow [2024-01-27 14:52:57,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:57,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:57,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:52:57,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 29 more)] === [2024-01-27 14:52:57,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash 752485377, now seen corresponding path program 1 times [2024-01-27 14:52:57,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:57,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109322672] [2024-01-27 14:52:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:57,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:57,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:57,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:57,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109322672] [2024-01-27 14:52:57,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109322672] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:57,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:57,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:52:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627483961] [2024-01-27 14:52:57,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:57,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:52:57,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:57,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:52:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:52:57,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-01-27 14:52:57,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:57,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-01-27 14:52:57,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:57,706 INFO L124 PetriNetUnfolderBase]: 123/281 cut-off events. [2024-01-27 14:52:57,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:52:57,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 281 events. 123/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1144 event pairs, 5 based on Foata normal form. 14/294 useless extension candidates. Maximal degree in co-relation 516. Up to 216 conditions per place. [2024-01-27 14:52:57,710 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 28 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-01-27 14:52:57,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 157 flow [2024-01-27 14:52:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:52:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:52:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-01-27 14:52:57,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-01-27 14:52:57,716 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 90 flow. Second operand 4 states and 123 transitions. [2024-01-27 14:52:57,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 157 flow [2024-01-27 14:52:57,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 153 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:57,718 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 80 flow [2024-01-27 14:52:57,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-01-27 14:52:57,719 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -13 predicate places. [2024-01-27 14:52:57,719 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 80 flow [2024-01-27 14:52:57,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:57,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:57,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:52:57,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 29 more)] === [2024-01-27 14:52:57,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1583558410, now seen corresponding path program 1 times [2024-01-27 14:52:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:57,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656886305] [2024-01-27 14:52:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:57,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:57,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:57,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656886305] [2024-01-27 14:52:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656886305] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:57,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:57,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:52:57,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742703402] [2024-01-27 14:52:57,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:57,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:52:57,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:57,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:52:57,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:52:57,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-01-27 14:52:57,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:57,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-01-27 14:52:57,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:57,947 INFO L124 PetriNetUnfolderBase]: 123/249 cut-off events. [2024-01-27 14:52:57,948 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 14:52:57,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 249 events. 123/249 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 898 event pairs, 5 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 479. Up to 194 conditions per place. [2024-01-27 14:52:57,949 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-01-27 14:52:57,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 167 flow [2024-01-27 14:52:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:52:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:52:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-01-27 14:52:57,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-01-27 14:52:57,952 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 80 flow. Second operand 4 states and 128 transitions. [2024-01-27 14:52:57,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 167 flow [2024-01-27 14:52:57,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:57,954 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 71 flow [2024-01-27 14:52:57,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-01-27 14:52:57,955 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -17 predicate places. [2024-01-27 14:52:57,955 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 71 flow [2024-01-27 14:52:57,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:57,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:57,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:52:57,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 29 more)] === [2024-01-27 14:52:57,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:57,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1857846349, now seen corresponding path program 1 times [2024-01-27 14:52:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490043996] [2024-01-27 14:52:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:57,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:52:57,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 14:52:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:52:58,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 14:52:58,010 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 14:52:58,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 32 remaining) [2024-01-27 14:52:58,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 32 remaining) [2024-01-27 14:52:58,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 32 remaining) [2024-01-27 14:52:58,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 32 remaining) [2024-01-27 14:52:58,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 32 remaining) [2024-01-27 14:52:58,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 32 remaining) [2024-01-27 14:52:58,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 32 remaining) [2024-01-27 14:52:58,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 32 remaining) [2024-01-27 14:52:58,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 32 remaining) [2024-01-27 14:52:58,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 32 remaining) [2024-01-27 14:52:58,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 32 remaining) [2024-01-27 14:52:58,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 32 remaining) [2024-01-27 14:52:58,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 32 remaining) [2024-01-27 14:52:58,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 32 remaining) [2024-01-27 14:52:58,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 32 remaining) [2024-01-27 14:52:58,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 32 remaining) [2024-01-27 14:52:58,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 32 remaining) [2024-01-27 14:52:58,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 32 remaining) [2024-01-27 14:52:58,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 32 remaining) [2024-01-27 14:52:58,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (12 of 32 remaining) [2024-01-27 14:52:58,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 32 remaining) [2024-01-27 14:52:58,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 32 remaining) [2024-01-27 14:52:58,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 32 remaining) [2024-01-27 14:52:58,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 32 remaining) [2024-01-27 14:52:58,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 32 remaining) [2024-01-27 14:52:58,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 32 remaining) [2024-01-27 14:52:58,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 32 remaining) [2024-01-27 14:52:58,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 32 remaining) [2024-01-27 14:52:58,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 32 remaining) [2024-01-27 14:52:58,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 32 remaining) [2024-01-27 14:52:58,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 32 remaining) [2024-01-27 14:52:58,026 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 32 remaining) [2024-01-27 14:52:58,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:52:58,027 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-01-27 14:52:58,033 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 14:52:58,033 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:52:58,069 INFO L503 ceAbstractionStarter]: Automizer considered 18 witness invariants [2024-01-27 14:52:58,069 INFO L504 ceAbstractionStarter]: WitnessConsidered=18 [2024-01-27 14:52:58,070 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:52:58 BasicIcfg [2024-01-27 14:52:58,070 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:52:58,070 INFO L158 Benchmark]: Toolchain (without parser) took 2352.86ms. Allocated memory was 134.2MB in the beginning and 178.3MB in the end (delta: 44.0MB). Free memory was 75.0MB in the beginning and 81.7MB in the end (delta: -6.7MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2024-01-27 14:52:58,070 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:52:58,071 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:52:58,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.17ms. Allocated memory is still 134.2MB. Free memory was 74.7MB in the beginning and 60.3MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-01-27 14:52:58,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.05ms. Allocated memory is still 134.2MB. Free memory was 60.3MB in the beginning and 58.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:52:58,071 INFO L158 Benchmark]: Boogie Preprocessor took 53.79ms. Allocated memory is still 134.2MB. Free memory was 58.5MB in the beginning and 105.6MB in the end (delta: -47.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-01-27 14:52:58,071 INFO L158 Benchmark]: RCFGBuilder took 482.17ms. Allocated memory was 134.2MB in the beginning and 178.3MB in the end (delta: 44.0MB). Free memory was 105.6MB in the beginning and 125.6MB in the end (delta: -20.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2024-01-27 14:52:58,072 INFO L158 Benchmark]: TraceAbstraction took 1509.23ms. Allocated memory is still 178.3MB. Free memory was 124.6MB in the beginning and 81.7MB in the end (delta: 42.9MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2024-01-27 14:52:58,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.17ms. Allocated memory is still 134.2MB. Free memory was 74.7MB in the beginning and 60.3MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.05ms. Allocated memory is still 134.2MB. Free memory was 60.3MB in the beginning and 58.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.79ms. Allocated memory is still 134.2MB. Free memory was 58.5MB in the beginning and 105.6MB in the end (delta: -47.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * RCFGBuilder took 482.17ms. Allocated memory was 134.2MB in the beginning and 178.3MB in the end (delta: 44.0MB). Free memory was 105.6MB in the beginning and 125.6MB in the end (delta: -20.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1509.23ms. Allocated memory is still 178.3MB. Free memory was 124.6MB in the beginning and 81.7MB in the end (delta: 42.9MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 unsigned int x1, x2; [L59] 0 pthread_t t1, t2; VAL [t1={3:0}, t2={5:0}, x1=0, x2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[x1]]],CastExpression[ACSLType[long long],IdentifierExpression[x2]]],IntegerLiteral[0LL]]]] VAL [t1={3:0}, t2={5:0}, x1=0, x2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHMINUS,IntegerLiteral[0LL],CastExpression[ACSLType[long long],IdentifierExpression[x1]]],CastExpression[ACSLType[long long],IdentifierExpression[x2]]],IntegerLiteral[0LL]]]] VAL [t1={3:0}, t2={5:0}, x1=0, x2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x1],IntegerLiteral[0U]]]] VAL [t1={3:0}, t2={5:0}, x1=0, x2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,CastExpression[ACSLType[long long],IdentifierExpression[x1]],CastExpression[ACSLType[long long],IdentifierExpression[x2]]],IntegerLiteral[0LL]]]] VAL [t1={3:0}, t2={5:0}, x1=0, x2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,CastExpression[ACSLType[long long],IdentifierExpression[x1]],CastExpression[ACSLType[long long],IdentifierExpression[x2]]],IntegerLiteral[0LL]]]] VAL [t1={3:0}, t2={5:0}, x1=0, x2=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x2],IntegerLiteral[0U]]]] [L61] 0 x1 = __VERIFIER_nondet_uint() [L62] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x2],IntegerLiteral[0U]]]] [L62] 0 x2 = __VERIFIER_nondet_uint() [L63] CALL 0 assume_abort_if_not(x1 == x2) [L35] COND FALSE 0 !(!cond) [L63] RET 0 assume_abort_if_not(x1 == x2) [L66] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [_argptr={0:0}, t1={3:0}, t2={5:0}, x1=0, x2=0] [L41] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] [L41] 1 x2++ VAL [_argptr={0:0}, _argptr={0:0}, x1=0, x2=1] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] [L42] 1 x2++ VAL [_argptr={0:0}, _argptr={0:0}, x1=0, x2=2] [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [_argptr={0:0}, _argptr={0:0}, x1=0, x2=2] [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x2],IntegerLiteral[0U]]]] VAL [_argptr={0:0}, _argptr={0:0}, x1=0, x2=2] - UnprovableResult [Line: 41]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 42]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 66]: 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: 67]: 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 5 procedures, 80 locations, 32 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: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 14 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2024-01-27 14:52:58,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE