./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-95.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-95.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25ecd9f27c7eddb672dd3b56c4cfb64ec494cf273e23672d850625b14b107c83 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:26,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:26,350 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:07:26,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:26,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:26,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:26,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:26,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:26,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:26,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:26,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:26,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:26,411 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:26,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:26,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:26,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:26,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:26,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:26,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:26,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:26,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:26,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:26,417 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:26,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:26,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:26,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:26,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:26,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:26,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:26,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:26,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:26,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:26,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:26,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:26,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:26,424 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:26,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:26,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:26,425 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:26,425 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25ecd9f27c7eddb672dd3b56c4cfb64ec494cf273e23672d850625b14b107c83 [2023-11-06 23:07:26,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:26,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:26,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:26,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:26,778 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:26,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-95.i [2023-11-06 23:07:30,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:30,290 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:30,291 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-95.i [2023-11-06 23:07:30,305 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/data/b86c566fb/0324ae19be414d7a853702f2259605dc/FLAGd6c631a02 [2023-11-06 23:07:30,326 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/data/b86c566fb/0324ae19be414d7a853702f2259605dc [2023-11-06 23:07:30,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:30,332 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:30,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:30,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:30,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:30,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bfbeeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30, skipping insertion in model container [2023-11-06 23:07:30,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,389 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:30,569 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-95.i[919,932] [2023-11-06 23:07:30,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:30,690 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:30,704 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-95.i[919,932] [2023-11-06 23:07:30,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:30,762 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:30,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30 WrapperNode [2023-11-06 23:07:30,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:30,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:30,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:30,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:30,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,866 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 207 [2023-11-06 23:07:30,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:30,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:30,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:30,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:30,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:30,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:30,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:30,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:30,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (1/1) ... [2023-11-06 23:07:30,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:30,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:31,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:31,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:07:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:07:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:31,182 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:31,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:31,712 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:31,720 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:31,721 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:07:31,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:31 BoogieIcfgContainer [2023-11-06 23:07:31,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:31,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:31,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:31,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:31,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:30" (1/3) ... [2023-11-06 23:07:31,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a50339c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:31, skipping insertion in model container [2023-11-06 23:07:31,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:30" (2/3) ... [2023-11-06 23:07:31,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a50339c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:31, skipping insertion in model container [2023-11-06 23:07:31,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:31" (3/3) ... [2023-11-06 23:07:31,734 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-95.i [2023-11-06 23:07:31,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:31,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:07:31,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:31,817 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@61810cfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:31,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:07:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 63 states have (on average 1.492063492063492) internal successors, (94), 64 states have internal predecessors, (94), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 23:07:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-06 23:07:31,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:31,842 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:31,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:31,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash -347385175, now seen corresponding path program 1 times [2023-11-06 23:07:31,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:31,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562717866] [2023-11-06 23:07:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:31,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:32,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562717866] [2023-11-06 23:07:32,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 23:07:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862353386] [2023-11-06 23:07:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:32,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:32,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:32,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:32,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:32,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 23:07:32,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-11-06 23:07:32,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:32,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862353386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:32,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:32,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796278959] [2023-11-06 23:07:32,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:32,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:32,713 INFO L87 Difference]: Start difference. First operand has 91 states, 63 states have (on average 1.492063492063492) internal successors, (94), 64 states have internal predecessors, (94), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-06 23:07:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:32,776 INFO L93 Difference]: Finished difference Result 174 states and 305 transitions. [2023-11-06 23:07:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:32,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) Word has length 168 [2023-11-06 23:07:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:32,791 INFO L225 Difference]: With dead ends: 174 [2023-11-06 23:07:32,791 INFO L226 Difference]: Without dead ends: 86 [2023-11-06 23:07:32,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:32,802 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:32,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-06 23:07:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-06 23:07:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.423728813559322) internal successors, (84), 59 states have internal predecessors, (84), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 23:07:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 134 transitions. [2023-11-06 23:07:32,884 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 134 transitions. Word has length 168 [2023-11-06 23:07:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:32,886 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 134 transitions. [2023-11-06 23:07:32,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-06 23:07:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 134 transitions. [2023-11-06 23:07:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-06 23:07:32,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:32,900 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:32,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 23:07:33,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:33,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash -784756429, now seen corresponding path program 1 times [2023-11-06 23:07:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:33,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715332096] [2023-11-06 23:07:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:33,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:33,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330183897] [2023-11-06 23:07:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:33,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:33,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:33,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:07:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:07:33,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-06 23:07:33,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:33,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715332096] [2023-11-06 23:07:33,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330183897] [2023-11-06 23:07:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330183897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:33,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798956417] [2023-11-06 23:07:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:33,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:33,475 INFO L87 Difference]: Start difference. First operand 86 states and 134 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-06 23:07:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:33,544 INFO L93 Difference]: Finished difference Result 216 states and 334 transitions. [2023-11-06 23:07:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2023-11-06 23:07:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:33,553 INFO L225 Difference]: With dead ends: 216 [2023-11-06 23:07:33,553 INFO L226 Difference]: Without dead ends: 133 [2023-11-06 23:07:33,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:33,558 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 67 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:33,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 276 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-06 23:07:33,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2023-11-06 23:07:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 95 states have internal predecessors, (132), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 23:07:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 198 transitions. [2023-11-06 23:07:33,598 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 198 transitions. Word has length 168 [2023-11-06 23:07:33,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:33,600 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 198 transitions. [2023-11-06 23:07:33,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-06 23:07:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 198 transitions. [2023-11-06 23:07:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-06 23:07:33,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:33,605 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:33,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:33,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:33,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:33,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash -216677071, now seen corresponding path program 1 times [2023-11-06 23:07:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:33,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708036342] [2023-11-06 23:07:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:33,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:33,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892725529] [2023-11-06 23:07:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:33,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:33,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:33,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:07:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:34,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:07:34,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 352 proven. 60 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2023-11-06 23:07:34,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-11-06 23:07:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708036342] [2023-11-06 23:07:34,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892725529] [2023-11-06 23:07:34,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892725529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:34,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:34,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-06 23:07:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085024247] [2023-11-06 23:07:34,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:34,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:07:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:07:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:07:34,725 INFO L87 Difference]: Start difference. First operand 130 states and 198 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-11-06 23:07:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:35,204 INFO L93 Difference]: Finished difference Result 341 states and 504 transitions. [2023-11-06 23:07:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:07:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 169 [2023-11-06 23:07:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:35,209 INFO L225 Difference]: With dead ends: 341 [2023-11-06 23:07:35,209 INFO L226 Difference]: Without dead ends: 214 [2023-11-06 23:07:35,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:07:35,211 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 182 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:35,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 351 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:07:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-06 23:07:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 206. [2023-11-06 23:07:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 162 states have (on average 1.382716049382716) internal successors, (224), 165 states have internal predecessors, (224), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 34 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-06 23:07:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 298 transitions. [2023-11-06 23:07:35,236 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 298 transitions. Word has length 169 [2023-11-06 23:07:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:35,238 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 298 transitions. [2023-11-06 23:07:35,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 3 states have call successors, (45), 2 states have call predecessors, (45), 4 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-11-06 23:07:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 298 transitions. [2023-11-06 23:07:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-06 23:07:35,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:35,241 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:35,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:35,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:35,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:35,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1661745615, now seen corresponding path program 1 times [2023-11-06 23:07:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959165135] [2023-11-06 23:07:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:35,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:35,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78046708] [2023-11-06 23:07:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:35,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:35,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:35,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:07:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:35,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:35,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 384 proven. 12 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2023-11-06 23:07:35,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 60 proven. 12 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-11-06 23:07:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959165135] [2023-11-06 23:07:35,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78046708] [2023-11-06 23:07:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78046708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:35,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:35,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 23:07:35,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157648930] [2023-11-06 23:07:35,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:35,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:35,996 INFO L87 Difference]: Start difference. First operand 206 states and 298 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-06 23:07:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:36,231 INFO L93 Difference]: Finished difference Result 419 states and 602 transitions. [2023-11-06 23:07:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:07:36,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 169 [2023-11-06 23:07:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:36,236 INFO L225 Difference]: With dead ends: 419 [2023-11-06 23:07:36,236 INFO L226 Difference]: Without dead ends: 216 [2023-11-06 23:07:36,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:07:36,241 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 145 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:36,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 256 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:07:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-06 23:07:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2023-11-06 23:07:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 165 states have (on average 1.3515151515151516) internal successors, (223), 168 states have internal predecessors, (223), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 34 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-06 23:07:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 297 transitions. [2023-11-06 23:07:36,300 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 297 transitions. Word has length 169 [2023-11-06 23:07:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:36,301 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 297 transitions. [2023-11-06 23:07:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-06 23:07:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 297 transitions. [2023-11-06 23:07:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-06 23:07:36,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:36,304 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:36,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:36,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:36,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:36,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2054772625, now seen corresponding path program 1 times [2023-11-06 23:07:36,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:36,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962372665] [2023-11-06 23:07:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:36,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:36,576 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:36,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984897789] [2023-11-06 23:07:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:36,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:36,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:36,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f54c0602-4fc6-4c27-aff8-cc141fb37c86/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:07:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:36,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:07:36,857 INFO L285 TraceCheckSpWp]: Computing forward predicates...