./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.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/parallel-bakery-2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-bakery-2.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-?-80b1b13-m [2024-01-31 16:58:15,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:58:15,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:58:15,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:58:15,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:58:15,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:58:15,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:58:15,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:58:15,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:58:15,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:58:15,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:58:15,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:58:15,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:58:15,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:58:15,898 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:58:15,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:58:15,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:58:15,899 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:58:15,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:58:15,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:58:15,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:58:15,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:58:15,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:58:15,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:58:15,900 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:58:15,900 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:58:15,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:58:15,901 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:58:15,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:58:15,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:58:15,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:58:15,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:58:15,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:58:15,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:58:15,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:58:15,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:58:15,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:58:15,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:58:15,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:58:15,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:58:15,903 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:58:15,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:58:15,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:58:15,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:58:16,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:58:16,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:58:16,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:58:16,133 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:58:16,133 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:58:16,134 INFO L431 ainManager$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/parallel-bakery-2.wvr.yml/witness.yml [2024-01-31 16:58:16,293 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:58:16,294 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:58:16,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2024-01-31 16:58:17,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:58:17,317 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:58:17,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2024-01-31 16:58:17,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98882b75/6efa247b5cbb457eb8c4391148b8074e/FLAGbbf6e821f [2024-01-31 16:58:17,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98882b75/6efa247b5cbb457eb8c4391148b8074e [2024-01-31 16:58:17,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:58:17,373 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:58:17,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:58:17,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:58:17,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:58:17,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:58:16" (1/2) ... [2024-01-31 16:58:17,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140912db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:58:17, skipping insertion in model container [2024-01-31 16:58:17,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:58:16" (1/2) ... [2024-01-31 16:58:17,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@750ca9bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:58:17, skipping insertion in model container [2024-01-31 16:58:17,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:58:17" (2/2) ... [2024-01-31 16:58:17,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140912db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17, skipping insertion in model container [2024-01-31 16:58:17,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:58:17" (2/2) ... [2024-01-31 16:58:17,383 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:58:17,434 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:58:17,455 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:58:17,578 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/parallel-bakery-2.wvr.c[3538,3551] [2024-01-31 16:58:17,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:58:17,592 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:58:17,606 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/parallel-bakery-2.wvr.c[3538,3551] [2024-01-31 16:58:17,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:58:17,617 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:58:17,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17 WrapperNode [2024-01-31 16:58:17,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:58:17,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:58:17,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:58:17,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:58:17,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,672 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2024-01-31 16:58:17,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:58:17,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:58:17,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:58:17,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:58:17,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,717 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]. [2024-01-31 16:58:17,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:58:17,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:58:17,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:58:17,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:58:17,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (1/1) ... [2024-01-31 16:58:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:58:17,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:58:17,774 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) [2024-01-31 16:58:17,793 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 [2024-01-31 16:58:17,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:58:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:58:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:58:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:58:17,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:58:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:58:17,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:58:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:58:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:58:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:58:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:58:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:58:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:58:17,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:58:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:58:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:58:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:58:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:58:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:58:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:58:17,826 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:58:17,919 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:58:17,921 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:58:18,094 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:58:18,094 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:58:18,211 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:58:18,212 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:58:18,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:58:18 BoogieIcfgContainer [2024-01-31 16:58:18,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:58:18,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:58:18,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:58:18,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:58:18,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:58:16" (1/4) ... [2024-01-31 16:58:18,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526a0e81 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:58:18, skipping insertion in model container [2024-01-31 16:58:18,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:58:17" (2/4) ... [2024-01-31 16:58:18,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526a0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:58:18, skipping insertion in model container [2024-01-31 16:58:18,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:58:17" (3/4) ... [2024-01-31 16:58:18,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526a0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:58:18, skipping insertion in model container [2024-01-31 16:58:18,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:58:18" (4/4) ... [2024-01-31 16:58:18,220 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2024-01-31 16:58:18,233 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:58:18,233 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:58:18,233 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:58:18,264 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 16:58:18,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 84 flow [2024-01-31 16:58:18,322 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2024-01-31 16:58:18,322 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:58:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 0/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 16:58:18,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 84 flow [2024-01-31 16:58:18,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 32 transitions, 76 flow [2024-01-31 16:58:18,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:58:18,346 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;@4af2b1f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:58:18,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 16:58:18,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:58:18,365 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-31 16:58:18,365 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:58:18,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:18,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:18,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:18,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash 423839951, now seen corresponding path program 1 times [2024-01-31 16:58:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231827258] [2024-01-31 16:58:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:18,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231827258] [2024-01-31 16:58:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231827258] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:18,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:58:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073507161] [2024-01-31 16:58:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:18,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:58:18,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:18,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:58:18,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:58:18,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-31 16:58:18,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-31 16:58:18,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:18,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-31 16:58:18,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:19,126 INFO L124 PetriNetUnfolderBase]: 172/413 cut-off events. [2024-01-31 16:58:19,126 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-01-31 16:58:19,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 413 events. 172/413 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2022 event pairs, 63 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 658. Up to 102 conditions per place. [2024-01-31 16:58:19,131 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 44 selfloop transitions, 7 changer transitions 13/75 dead transitions. [2024-01-31 16:58:19,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 311 flow [2024-01-31 16:58:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:58:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:58:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-01-31 16:58:19,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-01-31 16:58:19,143 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 8 states and 169 transitions. [2024-01-31 16:58:19,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 311 flow [2024-01-31 16:58:19,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:58:19,147 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 106 flow [2024-01-31 16:58:19,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-01-31 16:58:19,154 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-01-31 16:58:19,155 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 106 flow [2024-01-31 16:58:19,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-31 16:58:19,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:19,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:19,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:58:19,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:19,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1457327301, now seen corresponding path program 2 times [2024-01-31 16:58:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639285725] [2024-01-31 16:58:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639285725] [2024-01-31 16:58:19,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639285725] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:19,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:19,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:58:19,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552074159] [2024-01-31 16:58:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:58:19,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:58:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:58:19,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-31 16:58:19,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-31 16:58:19,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:19,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-31 16:58:19,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:19,509 INFO L124 PetriNetUnfolderBase]: 158/376 cut-off events. [2024-01-31 16:58:19,510 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-01-31 16:58:19,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 376 events. 158/376 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1757 event pairs, 49 based on Foata normal form. 1/364 useless extension candidates. Maximal degree in co-relation 789. Up to 98 conditions per place. [2024-01-31 16:58:19,513 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 32 selfloop transitions, 6 changer transitions 24/73 dead transitions. [2024-01-31 16:58:19,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 317 flow [2024-01-31 16:58:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:58:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:58:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-01-31 16:58:19,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-01-31 16:58:19,518 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 106 flow. Second operand 8 states and 166 transitions. [2024-01-31 16:58:19,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 317 flow [2024-01-31 16:58:19,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 313 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:58:19,521 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 105 flow [2024-01-31 16:58:19,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=105, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2024-01-31 16:58:19,523 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-01-31 16:58:19,525 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 105 flow [2024-01-31 16:58:19,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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) [2024-01-31 16:58:19,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:19,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:19,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:58:19,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:19,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash -502015573, now seen corresponding path program 3 times [2024-01-31 16:58:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082325627] [2024-01-31 16:58:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:19,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:19,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082325627] [2024-01-31 16:58:19,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082325627] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:19,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:19,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:58:19,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185075246] [2024-01-31 16:58:19,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:19,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:58:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:58:19,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:58:19,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-31 16:58:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-31 16:58:19,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-31 16:58:19,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:19,819 INFO L124 PetriNetUnfolderBase]: 150/377 cut-off events. [2024-01-31 16:58:19,819 INFO L125 PetriNetUnfolderBase]: For 22/24 co-relation queries the response was YES. [2024-01-31 16:58:19,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 377 events. 150/377 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1654 event pairs, 32 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 762. Up to 164 conditions per place. [2024-01-31 16:58:19,821 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 30 selfloop transitions, 5 changer transitions 11/59 dead transitions. [2024-01-31 16:58:19,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 248 flow [2024-01-31 16:58:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:58:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:58:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-01-31 16:58:19,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-01-31 16:58:19,823 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 105 flow. Second operand 6 states and 125 transitions. [2024-01-31 16:58:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 248 flow [2024-01-31 16:58:19,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 227 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-31 16:58:19,830 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 115 flow [2024-01-31 16:58:19,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-01-31 16:58:19,831 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2024-01-31 16:58:19,831 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 115 flow [2024-01-31 16:58:19,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-31 16:58:19,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:19,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:19,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:58:19,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:19,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash 18066053, now seen corresponding path program 4 times [2024-01-31 16:58:19,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:19,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155850920] [2024-01-31 16:58:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:19,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155850920] [2024-01-31 16:58:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155850920] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:58:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422499005] [2024-01-31 16:58:19,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:19,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:58:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:19,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:58:19,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:58:19,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-01-31 16:58:19,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-31 16:58:19,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:19,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-01-31 16:58:19,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:19,942 INFO L124 PetriNetUnfolderBase]: 84/252 cut-off events. [2024-01-31 16:58:19,942 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-01-31 16:58:19,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 252 events. 84/252 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1114 event pairs, 62 based on Foata normal form. 8/253 useless extension candidates. Maximal degree in co-relation 283. Up to 156 conditions per place. [2024-01-31 16:58:19,943 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 21 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2024-01-31 16:58:19,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 179 flow [2024-01-31 16:58:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:58:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:58:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-01-31 16:58:19,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-01-31 16:58:19,944 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 115 flow. Second operand 3 states and 68 transitions. [2024-01-31 16:58:19,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 179 flow [2024-01-31 16:58:19,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:58:19,946 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 118 flow [2024-01-31 16:58:19,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-01-31 16:58:19,946 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-01-31 16:58:19,946 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 118 flow [2024-01-31 16:58:19,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-31 16:58:19,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:19,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:19,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:58:19,947 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:19,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:19,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1960190829, now seen corresponding path program 5 times [2024-01-31 16:58:19,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:19,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168223721] [2024-01-31 16:58:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:19,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168223721] [2024-01-31 16:58:20,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168223721] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:20,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:20,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:58:20,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680904180] [2024-01-31 16:58:20,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:20,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:58:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:58:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:58:20,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-01-31 16:58:20,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-01-31 16:58:20,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:20,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-01-31 16:58:20,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:20,186 INFO L124 PetriNetUnfolderBase]: 89/253 cut-off events. [2024-01-31 16:58:20,187 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-01-31 16:58:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 253 events. 89/253 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 968 event pairs, 39 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 355. Up to 137 conditions per place. [2024-01-31 16:58:20,188 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 19 selfloop transitions, 2 changer transitions 16/51 dead transitions. [2024-01-31 16:58:20,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 225 flow [2024-01-31 16:58:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:58:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:58:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-01-31 16:58:20,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2024-01-31 16:58:20,189 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 118 flow. Second operand 7 states and 137 transitions. [2024-01-31 16:58:20,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 225 flow [2024-01-31 16:58:20,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 219 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:58:20,190 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 108 flow [2024-01-31 16:58:20,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=7, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-01-31 16:58:20,190 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-01-31 16:58:20,190 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 108 flow [2024-01-31 16:58:20,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-01-31 16:58:20,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:20,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:20,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:58:20,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:20,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1726474337, now seen corresponding path program 6 times [2024-01-31 16:58:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:20,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11727730] [2024-01-31 16:58:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:20,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11727730] [2024-01-31 16:58:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11727730] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:20,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:20,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:58:20,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880783237] [2024-01-31 16:58:20,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:58:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:58:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:58:20,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-01-31 16:58:20,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-31 16:58:20,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:20,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-01-31 16:58:20,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:20,256 INFO L124 PetriNetUnfolderBase]: 53/165 cut-off events. [2024-01-31 16:58:20,256 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-01-31 16:58:20,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 165 events. 53/165 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 511 event pairs, 34 based on Foata normal form. 4/165 useless extension candidates. Maximal degree in co-relation 343. Up to 92 conditions per place. [2024-01-31 16:58:20,257 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 22 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-01-31 16:58:20,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 175 flow [2024-01-31 16:58:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:58:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:58:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-31 16:58:20,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-31 16:58:20,257 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 108 flow. Second operand 3 states and 70 transitions. [2024-01-31 16:58:20,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 175 flow [2024-01-31 16:58:20,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 158 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:58:20,258 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 104 flow [2024-01-31 16:58:20,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-01-31 16:58:20,259 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-01-31 16:58:20,259 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 104 flow [2024-01-31 16:58:20,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-01-31 16:58:20,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:20,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:58:20,260 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1536553463, now seen corresponding path program 7 times [2024-01-31 16:58:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108759120] [2024-01-31 16:58:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:20,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:20,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:20,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108759120] [2024-01-31 16:58:20,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108759120] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:20,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:20,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:58:20,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380180763] [2024-01-31 16:58:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:20,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:58:20,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:20,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:58:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:58:20,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-31 16:58:20,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-31 16:58:20,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:20,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-31 16:58:20,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:20,448 INFO L124 PetriNetUnfolderBase]: 85/232 cut-off events. [2024-01-31 16:58:20,449 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-01-31 16:58:20,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 232 events. 85/232 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 823 event pairs, 28 based on Foata normal form. 8/234 useless extension candidates. Maximal degree in co-relation 198. Up to 73 conditions per place. [2024-01-31 16:58:20,450 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 23 selfloop transitions, 4 changer transitions 9/49 dead transitions. [2024-01-31 16:58:20,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 219 flow [2024-01-31 16:58:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:58:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:58:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-01-31 16:58:20,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-01-31 16:58:20,451 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 104 flow. Second operand 6 states and 116 transitions. [2024-01-31 16:58:20,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 219 flow [2024-01-31 16:58:20,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:58:20,452 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 116 flow [2024-01-31 16:58:20,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=6, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-01-31 16:58:20,452 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-01-31 16:58:20,452 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 116 flow [2024-01-31 16:58:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-01-31 16:58:20,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:58:20,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:58:20,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:58:20,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 16:58:20,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:58:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1368556831, now seen corresponding path program 8 times [2024-01-31 16:58:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:58:20,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222255039] [2024-01-31 16:58:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:58:20,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:58:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:58:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:58:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:58:20,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222255039] [2024-01-31 16:58:20,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222255039] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:58:20,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:58:20,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:58:20,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477215544] [2024-01-31 16:58:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:58:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:58:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:58:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:58:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:58:20,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-01-31 16:58:20,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2024-01-31 16:58:20,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:58:20,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-01-31 16:58:20,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:58:20,647 INFO L124 PetriNetUnfolderBase]: 25/86 cut-off events. [2024-01-31 16:58:20,647 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-01-31 16:58:20,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 86 events. 25/86 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 9 based on Foata normal form. 4/86 useless extension candidates. Maximal degree in co-relation 188. Up to 20 conditions per place. [2024-01-31 16:58:20,648 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-01-31 16:58:20,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 144 flow [2024-01-31 16:58:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:58:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:58:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-01-31 16:58:20,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-01-31 16:58:20,649 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 116 flow. Second operand 7 states and 114 transitions. [2024-01-31 16:58:20,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 144 flow [2024-01-31 16:58:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 130 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:58:20,649 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-01-31 16:58:20,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-01-31 16:58:20,650 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-01-31 16:58:20,650 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-01-31 16:58:20,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 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) [2024-01-31 16:58:20,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-31 16:58:20,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-31 16:58:20,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-31 16:58:20,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:58:20,653 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2024-01-31 16:58:20,655 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:58:20,655 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:58:20,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:58:20 BasicIcfg [2024-01-31 16:58:20,658 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:58:20,658 INFO L158 Benchmark]: Toolchain (without parser) took 3285.37ms. Allocated memory was 153.1MB in the beginning and 209.7MB in the end (delta: 56.6MB). Free memory was 124.7MB in the beginning and 128.9MB in the end (delta: -4.2MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2024-01-31 16:58:20,659 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 153.1MB. Free memory was 109.8MB in the beginning and 109.7MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:58:20,659 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 153.1MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:58:20,659 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.50ms. Allocated memory is still 153.1MB. Free memory was 124.5MB in the beginning and 110.6MB in the end (delta: 13.9MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2024-01-31 16:58:20,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.06ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 109.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:58:20,659 INFO L158 Benchmark]: Boogie Preprocessor took 68.48ms. Allocated memory is still 153.1MB. Free memory was 109.5MB in the beginning and 106.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:58:20,659 INFO L158 Benchmark]: RCFGBuilder took 469.66ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 72.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-31 16:58:20,660 INFO L158 Benchmark]: TraceAbstraction took 2444.67ms. Allocated memory was 153.1MB in the beginning and 209.7MB in the end (delta: 56.6MB). Free memory was 71.9MB in the beginning and 128.9MB in the end (delta: -57.0MB). Peak memory consumption was 492.9kB. Max. memory is 16.1GB. [2024-01-31 16:58:20,661 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 0.15ms. Allocated memory is still 153.1MB. Free memory was 109.8MB in the beginning and 109.7MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 153.1MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.50ms. Allocated memory is still 153.1MB. Free memory was 124.5MB in the beginning and 110.6MB in the end (delta: 13.9MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.06ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 109.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 68.48ms. Allocated memory is still 153.1MB. Free memory was 109.5MB in the beginning and 106.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 469.66ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 72.8MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2444.67ms. Allocated memory was 153.1MB in the beginning and 209.7MB in the end (delta: 56.6MB). Free memory was 71.9MB in the beginning and 128.9MB in the end (delta: -57.0MB). Peak memory consumption was 492.9kB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 62 locations, 3 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: 2.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1029 IncrementalHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 6 mSDtfsCounter, 1029 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=4, InterpolantAutomatonStates: 48, 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, 1.1s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 860 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:58:20,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE