./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/13_unverif.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/13_unverif.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea403ebfe777a86c8f08ec54b02dc30e546c8fae743fed5fb0e88129df40ac76 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:33:54,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:33:54,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:33:54,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:33:54,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:33:54,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:33:54,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:33:54,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:33:54,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:33:54,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:33:54,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:33:54,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:33:54,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:33:54,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:33:54,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:33:54,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:33:54,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:33:54,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:33:54,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:33:54,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:33:54,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:33:54,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:33:54,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:33:54,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:33:54,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:33:54,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:33:54,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:33:54,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:33:54,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:33:54,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:33:54,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:33:54,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:33:54,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:33:54,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:33:54,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:33:54,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:33:54,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:33:54,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:33:54,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:33:54,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:33:54,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:33:54,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:33:54,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:33:54,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:33:54,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:33:54,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:33:54,738 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:33:54,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:33:54,738 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:33:54,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:33:54,739 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:33:54,739 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:33:54,739 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:33:54,739 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:33:54,739 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:33:54,740 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:33:54,740 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:33:54,740 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:33:54,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:33:54,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:33:54,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:33:54,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:33:54,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:33:54,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:33:54,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:33:54,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:33:54,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:33:54,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:33:54,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:33:54,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:33:54,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:33:54,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:33:54,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:33:54,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:33:54,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:33:54,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:33:54,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:33:54,745 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:33:54,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:33:54,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:33:54,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:33:54,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:33:54,746 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea403ebfe777a86c8f08ec54b02dc30e546c8fae743fed5fb0e88129df40ac76 [2021-11-19 13:33:55,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:33:55,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:33:55,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:33:55,030 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:33:55,031 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:33:55,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/pthread-ext/13_unverif.i [2021-11-19 13:33:55,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/data/1fbd97c20/8d96bffee17c434b9c789a96d9372321/FLAGf165a8ee8 [2021-11-19 13:33:55,685 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:33:55,686 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/sv-benchmarks/c/pthread-ext/13_unverif.i [2021-11-19 13:33:55,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/data/1fbd97c20/8d96bffee17c434b9c789a96d9372321/FLAGf165a8ee8 [2021-11-19 13:33:55,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/data/1fbd97c20/8d96bffee17c434b9c789a96d9372321 [2021-11-19 13:33:55,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:33:55,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:33:55,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:33:55,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:33:55,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:33:55,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:33:55" (1/1) ... [2021-11-19 13:33:55,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ceda9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:55, skipping insertion in model container [2021-11-19 13:33:55,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:33:55" (1/1) ... [2021-11-19 13:33:55,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:33:56,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:33:56,500 WARN L230 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_86548aab-9360-40c9-8caf-50ad31fa2768/sv-benchmarks/c/pthread-ext/13_unverif.i[30213,30226] [2021-11-19 13:33:56,512 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:33:56,522 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:33:56,580 WARN L230 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_86548aab-9360-40c9-8caf-50ad31fa2768/sv-benchmarks/c/pthread-ext/13_unverif.i[30213,30226] [2021-11-19 13:33:56,586 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:33:56,631 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:33:56,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56 WrapperNode [2021-11-19 13:33:56,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:33:56,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:33:56,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:33:56,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:33:56,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,700 INFO L137 Inliner]: procedures = 168, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2021-11-19 13:33:56,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:33:56,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:33:56,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:33:56,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:33:56,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:33:56,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:33:56,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:33:56,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:33:56,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (1/1) ... [2021-11-19 13:33:56,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:33:56,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:33:56,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:33:56,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:33:56,838 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-19 13:33:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-19 13:33:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:33:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:33:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:33:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:33:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:33:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:33:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:33:56,841 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:33:56,970 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:33:56,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:33:57,106 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:33:57,140 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:33:57,140 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:33:57,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:33:57 BoogieIcfgContainer [2021-11-19 13:33:57,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:33:57,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:33:57,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:33:57,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:33:57,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:33:55" (1/3) ... [2021-11-19 13:33:57,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1999bc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:33:57, skipping insertion in model container [2021-11-19 13:33:57,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:33:56" (2/3) ... [2021-11-19 13:33:57,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1999bc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:33:57, skipping insertion in model container [2021-11-19 13:33:57,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:33:57" (3/3) ... [2021-11-19 13:33:57,159 INFO L111 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2021-11-19 13:33:57,164 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:33:57,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:33:57,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:33:57,165 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:33:57,199 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,199 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,199 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,199 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,200 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,200 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,201 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,201 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,201 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,202 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,203 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,203 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,204 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,206 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,207 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,209 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,210 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,210 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,210 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,210 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,211 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,211 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,212 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,216 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,217 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,217 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,217 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,217 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,217 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,217 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:57,222 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 13:33:57,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:33:57,283 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:33:57,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 13:33:57,298 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:33:57,313 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 44 transitions, 93 flow [2021-11-19 13:33:57,322 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 44 transitions, 93 flow [2021-11-19 13:33:57,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions, 93 flow [2021-11-19 13:33:57,365 INFO L129 PetriNetUnfolder]: 4/55 cut-off events. [2021-11-19 13:33:57,365 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-19 13:33:57,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 55 events. 4/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 27. Up to 4 conditions per place. [2021-11-19 13:33:57,369 INFO L116 LiptonReduction]: Number of co-enabled transitions 392 [2021-11-19 13:33:58,794 INFO L131 LiptonReduction]: Checked pairs total: 341 [2021-11-19 13:33:58,794 INFO L133 LiptonReduction]: Total number of compositions: 41 [2021-11-19 13:33:58,802 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2021-11-19 13:33:58,811 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 21 states have internal predecessors, (37), 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) [2021-11-19 13:33:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 21 states have internal predecessors, (37), 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) [2021-11-19 13:33:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 13:33:58,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:58,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 13:33:58,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:58,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash 206567964, now seen corresponding path program 1 times [2021-11-19 13:33:58,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:58,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219557288] [2021-11-19 13:33:58,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:58,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:59,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:59,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219557288] [2021-11-19 13:33:59,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219557288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:59,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:59,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:33:59,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715681517] [2021-11-19 13:33:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:59,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:33:59,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:33:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:59,131 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 21 states have internal predecessors, (37), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-19 13:33:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:59,171 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2021-11-19 13:33:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:33:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2021-11-19 13:33:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:59,183 INFO L225 Difference]: With dead ends: 23 [2021-11-19 13:33:59,185 INFO L226 Difference]: Without dead ends: 23 [2021-11-19 13:33:59,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:33:59,191 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:59,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:33:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-19 13:33:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-19 13:33:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 22 states have internal predecessors, (38), 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) [2021-11-19 13:33:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2021-11-19 13:33:59,225 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2021-11-19 13:33:59,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:59,226 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2021-11-19 13:33:59,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-19 13:33:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2021-11-19 13:33:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 13:33:59,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:59,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 13:33:59,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:33:59,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2108640013, now seen corresponding path program 1 times [2021-11-19 13:33:59,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:59,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032988597] [2021-11-19 13:33:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:59,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:59,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:59,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032988597] [2021-11-19 13:33:59,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032988597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:59,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:59,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:33:59,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327077081] [2021-11-19 13:33:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:59,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:33:59,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:33:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:33:59,356 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-19 13:33:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:59,379 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2021-11-19 13:33:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:33:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2021-11-19 13:33:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:59,380 INFO L225 Difference]: With dead ends: 19 [2021-11-19 13:33:59,380 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 13:33:59,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:33:59,382 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:59,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:33:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 13:33:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-11-19 13:33:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2021-11-19 13:33:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2021-11-19 13:33:59,387 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2021-11-19 13:33:59,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:59,387 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2021-11-19 13:33:59,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-19 13:33:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2021-11-19 13:33:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 13:33:59,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:59,388 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-11-19 13:33:59,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:33:59,389 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:59,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2108614561, now seen corresponding path program 1 times [2021-11-19 13:33:59,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:59,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928262542] [2021-11-19 13:33:59,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:59,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:33:59,404 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:33:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:33:59,430 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 13:33:59,430 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:33:59,431 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2021-11-19 13:33:59,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-19 13:33:59,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-19 13:33:59,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:33:59,436 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-19 13:33:59,437 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-19 13:33:59,437 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-11-19 13:33:59,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,444 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,445 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,446 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,447 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,448 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,449 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,450 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,451 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,452 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,452 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,452 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,452 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,453 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,454 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,454 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,454 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,454 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,455 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,455 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,455 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:33:59,455 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 13:33:59,457 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:33:59,458 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:33:59,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 13:33:59,460 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:33:59,461 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 59 transitions, 130 flow [2021-11-19 13:33:59,461 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 59 transitions, 130 flow [2021-11-19 13:33:59,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 59 transitions, 130 flow [2021-11-19 13:33:59,479 INFO L129 PetriNetUnfolder]: 7/83 cut-off events. [2021-11-19 13:33:59,479 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-19 13:33:59,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 7/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 56. Up to 6 conditions per place. [2021-11-19 13:33:59,483 INFO L116 LiptonReduction]: Number of co-enabled transitions 1204 [2021-11-19 13:34:00,609 INFO L131 LiptonReduction]: Checked pairs total: 2405 [2021-11-19 13:34:00,609 INFO L133 LiptonReduction]: Total number of compositions: 45 [2021-11-19 13:34:00,610 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 22 transitions, 56 flow [2021-11-19 13:34:00,627 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 247 states, 239 states have (on average 3.1255230125523012) internal successors, (747), 246 states have internal predecessors, (747), 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) [2021-11-19 13:34:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 239 states have (on average 3.1255230125523012) internal successors, (747), 246 states have internal predecessors, (747), 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) [2021-11-19 13:34:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:34:00,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:00,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:00,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1683367047, now seen corresponding path program 1 times [2021-11-19 13:34:00,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:00,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299185004] [2021-11-19 13:34:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:00,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:00,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:00,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299185004] [2021-11-19 13:34:00,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299185004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:00,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:00,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:00,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719360219] [2021-11-19 13:34:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:00,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:00,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:00,701 INFO L87 Difference]: Start difference. First operand has 247 states, 239 states have (on average 3.1255230125523012) internal successors, (747), 246 states have internal predecessors, (747), 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) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:00,776 INFO L93 Difference]: Finished difference Result 315 states and 851 transitions. [2021-11-19 13:34:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:00,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-11-19 13:34:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:00,785 INFO L225 Difference]: With dead ends: 315 [2021-11-19 13:34:00,785 INFO L226 Difference]: Without dead ends: 315 [2021-11-19 13:34:00,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:00,787 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:00,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 32 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-19 13:34:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 265. [2021-11-19 13:34:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 2.743295019157088) internal successors, (716), 264 states have internal predecessors, (716), 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) [2021-11-19 13:34:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 716 transitions. [2021-11-19 13:34:00,823 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 716 transitions. Word has length 7 [2021-11-19 13:34:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:00,823 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 716 transitions. [2021-11-19 13:34:00,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 716 transitions. [2021-11-19 13:34:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:34:00,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:00,825 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:00,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:34:00,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1486933015, now seen corresponding path program 1 times [2021-11-19 13:34:00,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:00,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040228676] [2021-11-19 13:34:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:00,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:00,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:00,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040228676] [2021-11-19 13:34:00,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040228676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:00,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:00,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:00,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712257419] [2021-11-19 13:34:00,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:00,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:00,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:00,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:00,929 INFO L87 Difference]: Start difference. First operand 265 states and 716 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:01,021 INFO L93 Difference]: Finished difference Result 291 states and 792 transitions. [2021-11-19 13:34:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:01,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-11-19 13:34:01,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:01,025 INFO L225 Difference]: With dead ends: 291 [2021-11-19 13:34:01,025 INFO L226 Difference]: Without dead ends: 291 [2021-11-19 13:34:01,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:01,027 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:01,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-19 13:34:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 228. [2021-11-19 13:34:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 2.7644444444444445) internal successors, (622), 227 states have internal predecessors, (622), 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) [2021-11-19 13:34:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 622 transitions. [2021-11-19 13:34:01,047 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 622 transitions. Word has length 9 [2021-11-19 13:34:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:01,047 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 622 transitions. [2021-11-19 13:34:01,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 622 transitions. [2021-11-19 13:34:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:34:01,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:01,049 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2021-11-19 13:34:01,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:34:01,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -943877048, now seen corresponding path program 1 times [2021-11-19 13:34:01,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:01,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435185011] [2021-11-19 13:34:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:01,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:34:01,063 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:34:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:34:01,091 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 13:34:01,091 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:34:01,091 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2021-11-19 13:34:01,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-11-19 13:34:01,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-11-19 13:34:01,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-11-19 13:34:01,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:34:01,092 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-19 13:34:01,093 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-19 13:34:01,093 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-11-19 13:34:01,105 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,105 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,105 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,106 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,106 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,106 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,106 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,106 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,106 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,106 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,107 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,107 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,107 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,107 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,107 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,107 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,107 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,108 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,109 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,110 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,110 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,110 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,110 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,111 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,111 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,111 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,111 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,111 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,111 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,112 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,112 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,112 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,112 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,112 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,112 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,113 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,114 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,114 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,114 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,114 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,114 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,114 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,115 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,116 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,116 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,116 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,116 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,116 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,117 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,117 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,117 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,117 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,117 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,117 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,125 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,125 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,125 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,125 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,136 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,136 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,137 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,137 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,137 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,138 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,138 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,138 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,138 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,138 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:01,138 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 13:34:01,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:34:01,141 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:34:01,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-19 13:34:01,143 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:34:01,143 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 169 flow [2021-11-19 13:34:01,143 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 74 transitions, 169 flow [2021-11-19 13:34:01,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 169 flow [2021-11-19 13:34:01,186 INFO L129 PetriNetUnfolder]: 10/111 cut-off events. [2021-11-19 13:34:01,186 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-11-19 13:34:01,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 111 events. 10/111 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 227 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2021-11-19 13:34:01,197 INFO L116 LiptonReduction]: Number of co-enabled transitions 2436 [2021-11-19 13:34:02,445 INFO L131 LiptonReduction]: Checked pairs total: 5924 [2021-11-19 13:34:02,446 INFO L133 LiptonReduction]: Total number of compositions: 56 [2021-11-19 13:34:02,447 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 81 flow [2021-11-19 13:34:02,509 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1506 states, 1487 states have (on average 4.21990585070612) internal successors, (6275), 1505 states have internal predecessors, (6275), 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) [2021-11-19 13:34:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 1506 states, 1487 states have (on average 4.21990585070612) internal successors, (6275), 1505 states have internal predecessors, (6275), 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) [2021-11-19 13:34:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:34:02,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:02,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:02,518 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1603402373, now seen corresponding path program 1 times [2021-11-19 13:34:02,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:02,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376265477] [2021-11-19 13:34:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:02,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:02,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:02,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376265477] [2021-11-19 13:34:02,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376265477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:02,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:02,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:02,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043050577] [2021-11-19 13:34:02,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:02,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:02,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:02,591 INFO L87 Difference]: Start difference. First operand has 1506 states, 1487 states have (on average 4.21990585070612) internal successors, (6275), 1505 states have internal predecessors, (6275), 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) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:02,752 INFO L93 Difference]: Finished difference Result 1949 states and 7161 transitions. [2021-11-19 13:34:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-11-19 13:34:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:02,781 INFO L225 Difference]: With dead ends: 1949 [2021-11-19 13:34:02,781 INFO L226 Difference]: Without dead ends: 1949 [2021-11-19 13:34:02,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:02,782 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:02,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 45 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2021-11-19 13:34:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1529. [2021-11-19 13:34:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1521 states have (on average 3.705456936226167) internal successors, (5636), 1528 states have internal predecessors, (5636), 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) [2021-11-19 13:34:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5636 transitions. [2021-11-19 13:34:02,931 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5636 transitions. Word has length 7 [2021-11-19 13:34:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:02,932 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 5636 transitions. [2021-11-19 13:34:02,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:02,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5636 transitions. [2021-11-19 13:34:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:34:02,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:02,933 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:02,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:34:02,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:02,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:02,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1023574350, now seen corresponding path program 1 times [2021-11-19 13:34:02,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:02,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332695447] [2021-11-19 13:34:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:02,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:02,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:02,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332695447] [2021-11-19 13:34:02,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332695447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:02,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:02,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:02,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307442553] [2021-11-19 13:34:02,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:02,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:02,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:02,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:02,997 INFO L87 Difference]: Start difference. First operand 1529 states and 5636 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:03,157 INFO L93 Difference]: Finished difference Result 1909 states and 7068 transitions. [2021-11-19 13:34:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:03,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-11-19 13:34:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:03,181 INFO L225 Difference]: With dead ends: 1909 [2021-11-19 13:34:03,181 INFO L226 Difference]: Without dead ends: 1909 [2021-11-19 13:34:03,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:03,183 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:03,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 41 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2021-11-19 13:34:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1562. [2021-11-19 13:34:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1555 states have (on average 3.729260450160772) internal successors, (5799), 1561 states have internal predecessors, (5799), 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) [2021-11-19 13:34:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 5799 transitions. [2021-11-19 13:34:03,302 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 5799 transitions. Word has length 9 [2021-11-19 13:34:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:03,302 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 5799 transitions. [2021-11-19 13:34:03,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 5799 transitions. [2021-11-19 13:34:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:34:03,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:03,304 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:03,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 13:34:03,304 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash 138161617, now seen corresponding path program 1 times [2021-11-19 13:34:03,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:03,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244800325] [2021-11-19 13:34:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:03,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:34:03,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:03,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244800325] [2021-11-19 13:34:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244800325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:03,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:03,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:03,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910628236] [2021-11-19 13:34:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:03,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:03,383 INFO L87 Difference]: Start difference. First operand 1562 states and 5799 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-19 13:34:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:03,498 INFO L93 Difference]: Finished difference Result 2121 states and 7829 transitions. [2021-11-19 13:34:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:03,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 11 [2021-11-19 13:34:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:03,523 INFO L225 Difference]: With dead ends: 2121 [2021-11-19 13:34:03,523 INFO L226 Difference]: Without dead ends: 2121 [2021-11-19 13:34:03,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:03,524 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 39 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:03,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 44 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-11-19 13:34:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1768. [2021-11-19 13:34:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1761 states have (on average 3.7160704145371946) internal successors, (6544), 1767 states have internal predecessors, (6544), 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) [2021-11-19 13:34:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 6544 transitions. [2021-11-19 13:34:03,625 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 6544 transitions. Word has length 11 [2021-11-19 13:34:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:03,626 INFO L470 AbstractCegarLoop]: Abstraction has 1768 states and 6544 transitions. [2021-11-19 13:34:03,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-19 13:34:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 6544 transitions. [2021-11-19 13:34:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:34:03,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:03,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:03,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 13:34:03,628 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash -370694523, now seen corresponding path program 1 times [2021-11-19 13:34:03,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:03,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774945889] [2021-11-19 13:34:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:03,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:34:03,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:03,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774945889] [2021-11-19 13:34:03,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774945889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:03,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:03,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:03,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213020272] [2021-11-19 13:34:03,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:03,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:03,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:03,690 INFO L87 Difference]: Start difference. First operand 1768 states and 6544 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:34:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:03,901 INFO L93 Difference]: Finished difference Result 2246 states and 8338 transitions. [2021-11-19 13:34:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 13 [2021-11-19 13:34:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:03,926 INFO L225 Difference]: With dead ends: 2246 [2021-11-19 13:34:03,926 INFO L226 Difference]: Without dead ends: 2246 [2021-11-19 13:34:03,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:03,927 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:03,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 41 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-11-19 13:34:03,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1944. [2021-11-19 13:34:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1938 states have (on average 3.7358101135190918) internal successors, (7240), 1943 states have internal predecessors, (7240), 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) [2021-11-19 13:34:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 7240 transitions. [2021-11-19 13:34:04,015 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 7240 transitions. Word has length 13 [2021-11-19 13:34:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:04,015 INFO L470 AbstractCegarLoop]: Abstraction has 1944 states and 7240 transitions. [2021-11-19 13:34:04,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:34:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 7240 transitions. [2021-11-19 13:34:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:04,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:04,017 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:04,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:34:04,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -836596813, now seen corresponding path program 1 times [2021-11-19 13:34:04,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:04,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711846642] [2021-11-19 13:34:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:04,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:04,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:04,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711846642] [2021-11-19 13:34:04,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711846642] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:04,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700391833] [2021-11-19 13:34:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:04,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:04,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:04,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:04,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:34:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:04,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:34:04,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:04,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:04,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700391833] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:04,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:04,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 14 [2021-11-19 13:34:04,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581323523] [2021-11-19 13:34:04,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:04,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:04,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:04,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:34:04,607 INFO L87 Difference]: Start difference. First operand 1944 states and 7240 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:05,270 INFO L93 Difference]: Finished difference Result 4472 states and 16244 transitions. [2021-11-19 13:34:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:34:05,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 14 [2021-11-19 13:34:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:05,332 INFO L225 Difference]: With dead ends: 4472 [2021-11-19 13:34:05,332 INFO L226 Difference]: Without dead ends: 4472 [2021-11-19 13:34:05,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:34:05,333 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 83 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:05,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 54 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:34:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2021-11-19 13:34:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 2656. [2021-11-19 13:34:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2650 states have (on average 3.831320754716981) internal successors, (10153), 2655 states have internal predecessors, (10153), 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) [2021-11-19 13:34:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 10153 transitions. [2021-11-19 13:34:05,519 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 10153 transitions. Word has length 14 [2021-11-19 13:34:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:05,520 INFO L470 AbstractCegarLoop]: Abstraction has 2656 states and 10153 transitions. [2021-11-19 13:34:05,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 10153 transitions. [2021-11-19 13:34:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:05,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:05,522 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:05,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:05,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-19 13:34:05,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:05,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:05,736 INFO L85 PathProgramCache]: Analyzing trace with hash -836596811, now seen corresponding path program 1 times [2021-11-19 13:34:05,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:05,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117046990] [2021-11-19 13:34:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:05,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:05,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:05,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117046990] [2021-11-19 13:34:05,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117046990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:05,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097639351] [2021-11-19 13:34:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:05,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:05,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:05,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:05,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 13:34:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:05,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:34:05,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:06,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:06,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097639351] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:06,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:06,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 14 [2021-11-19 13:34:06,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518499050] [2021-11-19 13:34:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:06,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:06,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:34:06,207 INFO L87 Difference]: Start difference. First operand 2656 states and 10153 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:06,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:06,894 INFO L93 Difference]: Finished difference Result 4981 states and 18393 transitions. [2021-11-19 13:34:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:34:06,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 14 [2021-11-19 13:34:06,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:06,934 INFO L225 Difference]: With dead ends: 4981 [2021-11-19 13:34:06,934 INFO L226 Difference]: Without dead ends: 4981 [2021-11-19 13:34:06,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:34:06,936 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 83 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:06,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 57 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:34:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2021-11-19 13:34:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 3247. [2021-11-19 13:34:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 3241 states have (on average 3.9173094723850665) internal successors, (12696), 3246 states have internal predecessors, (12696), 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) [2021-11-19 13:34:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 12696 transitions. [2021-11-19 13:34:07,139 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 12696 transitions. Word has length 14 [2021-11-19 13:34:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:07,139 INFO L470 AbstractCegarLoop]: Abstraction has 3247 states and 12696 transitions. [2021-11-19 13:34:07,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 12696 transitions. [2021-11-19 13:34:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:07,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:07,141 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:07,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:07,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-19 13:34:07,368 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:07,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:07,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1815944233, now seen corresponding path program 2 times [2021-11-19 13:34:07,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:07,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424790566] [2021-11-19 13:34:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:07,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:07,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:07,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424790566] [2021-11-19 13:34:07,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424790566] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:07,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107172166] [2021-11-19 13:34:07,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:34:07,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:07,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:07,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:07,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 13:34:07,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 13:34:07,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:07,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:34:07,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:07,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:07,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107172166] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:07,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:07,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 14 [2021-11-19 13:34:07,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19812774] [2021-11-19 13:34:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:07,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:07,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:34:07,786 INFO L87 Difference]: Start difference. First operand 3247 states and 12696 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:08,898 INFO L93 Difference]: Finished difference Result 11128 states and 41112 transitions. [2021-11-19 13:34:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:34:08,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 14 [2021-11-19 13:34:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:08,966 INFO L225 Difference]: With dead ends: 11128 [2021-11-19 13:34:08,966 INFO L226 Difference]: Without dead ends: 11128 [2021-11-19 13:34:08,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:34:08,967 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 131 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:08,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 117 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:34:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11128 states. [2021-11-19 13:34:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11128 to 4536. [2021-11-19 13:34:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4536 states, 4530 states have (on average 3.891832229580574) internal successors, (17630), 4535 states have internal predecessors, (17630), 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) [2021-11-19 13:34:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4536 states to 4536 states and 17630 transitions. [2021-11-19 13:34:09,378 INFO L78 Accepts]: Start accepts. Automaton has 4536 states and 17630 transitions. Word has length 14 [2021-11-19 13:34:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:09,379 INFO L470 AbstractCegarLoop]: Abstraction has 4536 states and 17630 transitions. [2021-11-19 13:34:09,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4536 states and 17630 transitions. [2021-11-19 13:34:09,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:09,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:09,381 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:09,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:09,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:09,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1815944235, now seen corresponding path program 2 times [2021-11-19 13:34:09,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:09,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815990386] [2021-11-19 13:34:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:09,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:09,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:09,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815990386] [2021-11-19 13:34:09,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815990386] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:09,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612415320] [2021-11-19 13:34:09,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:34:09,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:09,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:09,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:09,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 13:34:09,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 13:34:09,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:09,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:34:09,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:09,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:09,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612415320] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:09,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:09,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 5] total 14 [2021-11-19 13:34:09,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937170187] [2021-11-19 13:34:09,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:09,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:09,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:34:09,995 INFO L87 Difference]: Start difference. First operand 4536 states and 17630 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:11,223 INFO L93 Difference]: Finished difference Result 9967 states and 36826 transitions. [2021-11-19 13:34:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:34:11,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 14 [2021-11-19 13:34:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:11,331 INFO L225 Difference]: With dead ends: 9967 [2021-11-19 13:34:11,332 INFO L226 Difference]: Without dead ends: 9967 [2021-11-19 13:34:11,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:34:11,333 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 102 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:11,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 130 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:34:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2021-11-19 13:34:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 4882. [2021-11-19 13:34:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4876 states have (on average 3.9077112387202626) internal successors, (19054), 4881 states have internal predecessors, (19054), 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) [2021-11-19 13:34:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 19054 transitions. [2021-11-19 13:34:11,596 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 19054 transitions. Word has length 14 [2021-11-19 13:34:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:11,596 INFO L470 AbstractCegarLoop]: Abstraction has 4882 states and 19054 transitions. [2021-11-19 13:34:11,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 19054 transitions. [2021-11-19 13:34:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:11,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:11,598 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:11,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:11,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-19 13:34:11,811 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1816290193, now seen corresponding path program 3 times [2021-11-19 13:34:11,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:11,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916741268] [2021-11-19 13:34:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:11,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:11,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:11,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916741268] [2021-11-19 13:34:11,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916741268] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:11,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344396193] [2021-11-19 13:34:11,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:34:11,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:11,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:11,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:11,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 13:34:11,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:34:11,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:11,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:34:11,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:12,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:12,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344396193] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:12,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:12,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4] total 13 [2021-11-19 13:34:12,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205908510] [2021-11-19 13:34:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:12,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:12,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:34:12,254 INFO L87 Difference]: Start difference. First operand 4882 states and 19054 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:13,337 INFO L93 Difference]: Finished difference Result 13240 states and 48360 transitions. [2021-11-19 13:34:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:34:13,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 14 [2021-11-19 13:34:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:13,399 INFO L225 Difference]: With dead ends: 13240 [2021-11-19 13:34:13,399 INFO L226 Difference]: Without dead ends: 13240 [2021-11-19 13:34:13,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:34:13,400 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 89 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:13,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 153 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:34:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13240 states. [2021-11-19 13:34:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13240 to 6103. [2021-11-19 13:34:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6103 states, 6094 states have (on average 3.910403675746636) internal successors, (23830), 6102 states have internal predecessors, (23830), 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) [2021-11-19 13:34:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 23830 transitions. [2021-11-19 13:34:13,819 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 23830 transitions. Word has length 14 [2021-11-19 13:34:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:13,820 INFO L470 AbstractCegarLoop]: Abstraction has 6103 states and 23830 transitions. [2021-11-19 13:34:13,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 23830 transitions. [2021-11-19 13:34:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:13,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:13,822 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:13,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:14,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-19 13:34:14,047 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:14,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1816290195, now seen corresponding path program 3 times [2021-11-19 13:34:14,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:14,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784519819] [2021-11-19 13:34:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:14,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:14,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:14,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:14,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784519819] [2021-11-19 13:34:14,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784519819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:14,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67350596] [2021-11-19 13:34:14,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:34:14,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:14,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:14,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:14,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 13:34:14,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:34:14,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:14,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:34:14,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:14,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:14,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67350596] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:14,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:14,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4] total 13 [2021-11-19 13:34:14,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319107524] [2021-11-19 13:34:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:14,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:14,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:34:14,421 INFO L87 Difference]: Start difference. First operand 6103 states and 23830 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:15,598 INFO L93 Difference]: Finished difference Result 12272 states and 44339 transitions. [2021-11-19 13:34:15,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:34:15,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 14 [2021-11-19 13:34:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:15,653 INFO L225 Difference]: With dead ends: 12272 [2021-11-19 13:34:15,653 INFO L226 Difference]: Without dead ends: 12272 [2021-11-19 13:34:15,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:34:15,655 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 74 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:15,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 145 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:34:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12272 states. [2021-11-19 13:34:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12272 to 6306. [2021-11-19 13:34:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6306 states, 6294 states have (on average 3.873689227836034) internal successors, (24381), 6305 states have internal predecessors, (24381), 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) [2021-11-19 13:34:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6306 states to 6306 states and 24381 transitions. [2021-11-19 13:34:16,101 INFO L78 Accepts]: Start accepts. Automaton has 6306 states and 24381 transitions. Word has length 14 [2021-11-19 13:34:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:16,102 INFO L470 AbstractCegarLoop]: Abstraction has 6306 states and 24381 transitions. [2021-11-19 13:34:16,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-19 13:34:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6306 states and 24381 transitions. [2021-11-19 13:34:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:16,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:16,104 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:16,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:16,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:16,323 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1616218097, now seen corresponding path program 4 times [2021-11-19 13:34:16,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:16,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871110056] [2021-11-19 13:34:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:16,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:34:16,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:16,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871110056] [2021-11-19 13:34:16,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871110056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:16,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:16,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:34:16,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366025217] [2021-11-19 13:34:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:16,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:16,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:16,384 INFO L87 Difference]: Start difference. First operand 6306 states and 24381 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-19 13:34:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:16,467 INFO L93 Difference]: Finished difference Result 1205 states and 3717 transitions. [2021-11-19 13:34:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:16,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 14 [2021-11-19 13:34:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:16,471 INFO L225 Difference]: With dead ends: 1205 [2021-11-19 13:34:16,471 INFO L226 Difference]: Without dead ends: 1205 [2021-11-19 13:34:16,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:16,473 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:16,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 45 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2021-11-19 13:34:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 530. [2021-11-19 13:34:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 528 states have (on average 2.9431818181818183) internal successors, (1554), 529 states have internal predecessors, (1554), 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) [2021-11-19 13:34:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1554 transitions. [2021-11-19 13:34:16,493 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1554 transitions. Word has length 14 [2021-11-19 13:34:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:16,493 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1554 transitions. [2021-11-19 13:34:16,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-19 13:34:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1554 transitions. [2021-11-19 13:34:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 13:34:16,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:16,495 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2021-11-19 13:34:16,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 13:34:16,495 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 13:34:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash 784418592, now seen corresponding path program 1 times [2021-11-19 13:34:16,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:16,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385135194] [2021-11-19 13:34:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:16,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:34:16,506 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:34:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:34:16,523 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 13:34:16,525 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:34:16,525 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2021-11-19 13:34:16,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-19 13:34:16,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-19 13:34:16,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-19 13:34:16,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-19 13:34:16,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 13:34:16,527 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2021-11-19 13:34:16,528 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-19 13:34:16,528 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-11-19 13:34:16,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,549 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,550 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,551 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,552 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,553 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,553 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,553 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,553 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,554 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,555 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,556 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,556 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,556 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,556 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,556 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,557 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,557 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,557 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,557 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,557 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,557 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,557 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,558 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,558 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,558 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,558 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,558 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,559 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,559 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,559 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,559 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,560 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,560 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,560 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,560 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,560 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,565 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,565 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,566 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,566 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,566 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,566 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,566 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,566 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,567 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,567 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,567 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,568 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,568 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,569 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,570 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,571 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,572 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,572 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,572 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,572 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,573 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,574 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,574 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,574 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,574 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,575 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,575 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,575 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:16,575 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 13:34:16,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:34:16,578 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:34:16,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-19 13:34:16,582 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:34:16,582 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 89 transitions, 210 flow [2021-11-19 13:34:16,582 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 89 transitions, 210 flow [2021-11-19 13:34:16,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 89 transitions, 210 flow [2021-11-19 13:34:16,626 INFO L129 PetriNetUnfolder]: 13/139 cut-off events. [2021-11-19 13:34:16,626 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-11-19 13:34:16,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 139 events. 13/139 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 288 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 119. Up to 10 conditions per place. [2021-11-19 13:34:16,637 INFO L116 LiptonReduction]: Number of co-enabled transitions 4088 [2021-11-19 13:34:18,122 INFO L131 LiptonReduction]: Checked pairs total: 10061 [2021-11-19 13:34:18,122 INFO L133 LiptonReduction]: Total number of compositions: 67 [2021-11-19 13:34:18,123 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 37 transitions, 106 flow [2021-11-19 13:34:18,488 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9065 states, 9023 states have (on average 5.18740995234401) internal successors, (46806), 9064 states have internal predecessors, (46806), 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) [2021-11-19 13:34:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 9065 states, 9023 states have (on average 5.18740995234401) internal successors, (46806), 9064 states have internal predecessors, (46806), 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) [2021-11-19 13:34:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:34:18,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:18,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:18,514 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash 560279782, now seen corresponding path program 1 times [2021-11-19 13:34:18,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:18,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915916005] [2021-11-19 13:34:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:18,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:18,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:18,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915916005] [2021-11-19 13:34:18,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915916005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:18,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:18,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:18,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489228850] [2021-11-19 13:34:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:18,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:18,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:18,608 INFO L87 Difference]: Start difference. First operand has 9065 states, 9023 states have (on average 5.18740995234401) internal successors, (46806), 9064 states have internal predecessors, (46806), 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) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:18,852 INFO L93 Difference]: Finished difference Result 11281 states and 52563 transitions. [2021-11-19 13:34:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:18,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-11-19 13:34:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:19,201 INFO L225 Difference]: With dead ends: 11281 [2021-11-19 13:34:19,215 INFO L226 Difference]: Without dead ends: 11281 [2021-11-19 13:34:19,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:19,216 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 58 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:19,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 53 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:19,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11281 states. [2021-11-19 13:34:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11281 to 8757. [2021-11-19 13:34:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8757 states, 8741 states have (on average 4.688250772222858) internal successors, (40980), 8756 states have internal predecessors, (40980), 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) [2021-11-19 13:34:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8757 states to 8757 states and 40980 transitions. [2021-11-19 13:34:19,835 INFO L78 Accepts]: Start accepts. Automaton has 8757 states and 40980 transitions. Word has length 7 [2021-11-19 13:34:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:19,835 INFO L470 AbstractCegarLoop]: Abstraction has 8757 states and 40980 transitions. [2021-11-19 13:34:19,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 8757 states and 40980 transitions. [2021-11-19 13:34:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:34:19,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:19,836 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:19,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 13:34:19,837 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:19,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1557943755, now seen corresponding path program 1 times [2021-11-19 13:34:19,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:19,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626118955] [2021-11-19 13:34:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:19,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:19,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:19,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626118955] [2021-11-19 13:34:19,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626118955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:19,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:19,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:19,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378807690] [2021-11-19 13:34:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:19,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:19,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:19,889 INFO L87 Difference]: Start difference. First operand 8757 states and 40980 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:20,279 INFO L93 Difference]: Finished difference Result 11765 states and 55156 transitions. [2021-11-19 13:34:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:20,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-11-19 13:34:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:20,337 INFO L225 Difference]: With dead ends: 11765 [2021-11-19 13:34:20,338 INFO L226 Difference]: Without dead ends: 11765 [2021-11-19 13:34:20,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:20,338 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:20,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 49 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2021-11-19 13:34:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 9892. [2021-11-19 13:34:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9892 states, 9877 states have (on average 4.703452465323479) internal successors, (46456), 9891 states have internal predecessors, (46456), 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) [2021-11-19 13:34:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 46456 transitions. [2021-11-19 13:34:20,986 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 46456 transitions. Word has length 9 [2021-11-19 13:34:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:20,986 INFO L470 AbstractCegarLoop]: Abstraction has 9892 states and 46456 transitions. [2021-11-19 13:34:20,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 46456 transitions. [2021-11-19 13:34:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:34:20,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:20,987 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:20,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 13:34:20,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:20,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1000655380, now seen corresponding path program 1 times [2021-11-19 13:34:20,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:20,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701323811] [2021-11-19 13:34:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:20,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:34:21,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:21,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701323811] [2021-11-19 13:34:21,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701323811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:21,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:21,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:21,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249528262] [2021-11-19 13:34:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:21,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:21,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:21,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:21,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:21,063 INFO L87 Difference]: Start difference. First operand 9892 states and 46456 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-19 13:34:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:21,300 INFO L93 Difference]: Finished difference Result 13037 states and 60899 transitions. [2021-11-19 13:34:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 11 [2021-11-19 13:34:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:21,354 INFO L225 Difference]: With dead ends: 13037 [2021-11-19 13:34:21,354 INFO L226 Difference]: Without dead ends: 13037 [2021-11-19 13:34:21,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:21,360 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:21,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 51 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13037 states. [2021-11-19 13:34:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13037 to 10774. [2021-11-19 13:34:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10774 states, 10759 states have (on average 4.691235244911237) internal successors, (50473), 10773 states have internal predecessors, (50473), 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) [2021-11-19 13:34:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10774 states to 10774 states and 50473 transitions. [2021-11-19 13:34:21,981 INFO L78 Accepts]: Start accepts. Automaton has 10774 states and 50473 transitions. Word has length 11 [2021-11-19 13:34:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:21,981 INFO L470 AbstractCegarLoop]: Abstraction has 10774 states and 50473 transitions. [2021-11-19 13:34:21,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-19 13:34:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 10774 states and 50473 transitions. [2021-11-19 13:34:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:34:21,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:21,982 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:21,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 13:34:21,982 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:21,982 INFO L85 PathProgramCache]: Analyzing trace with hash 442847506, now seen corresponding path program 1 times [2021-11-19 13:34:21,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:21,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667178185] [2021-11-19 13:34:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:21,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:34:22,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:22,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667178185] [2021-11-19 13:34:22,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667178185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:22,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:22,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:22,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973506882] [2021-11-19 13:34:22,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:22,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:22,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:22,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:22,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:22,044 INFO L87 Difference]: Start difference. First operand 10774 states and 50473 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:34:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:22,315 INFO L93 Difference]: Finished difference Result 14582 states and 68413 transitions. [2021-11-19 13:34:22,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:22,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 13 [2021-11-19 13:34:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:22,522 INFO L225 Difference]: With dead ends: 14582 [2021-11-19 13:34:22,522 INFO L226 Difference]: Without dead ends: 14582 [2021-11-19 13:34:22,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:22,523 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 42 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:22,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 49 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:22,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14582 states. [2021-11-19 13:34:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14582 to 12684. [2021-11-19 13:34:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12684 states, 12670 states have (on average 4.7066298342541435) internal successors, (59633), 12683 states have internal predecessors, (59633), 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) [2021-11-19 13:34:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12684 states to 12684 states and 59633 transitions. [2021-11-19 13:34:23,164 INFO L78 Accepts]: Start accepts. Automaton has 12684 states and 59633 transitions. Word has length 13 [2021-11-19 13:34:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:23,164 INFO L470 AbstractCegarLoop]: Abstraction has 12684 states and 59633 transitions. [2021-11-19 13:34:23,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:34:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12684 states and 59633 transitions. [2021-11-19 13:34:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:23,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:23,166 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:23,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 13:34:23,166 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash -407929181, now seen corresponding path program 1 times [2021-11-19 13:34:23,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:23,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730677556] [2021-11-19 13:34:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:23,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:23,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:23,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730677556] [2021-11-19 13:34:23,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730677556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:23,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992717875] [2021-11-19 13:34:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:23,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:23,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:23,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:23,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 13:34:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:23,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:34:23,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:23,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:23,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992717875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:23,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125388425] [2021-11-19 13:34:23,442 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-19 13:34:23,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:34:23,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-19 13:34:23,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799372136] [2021-11-19 13:34:23,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:34:23,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:34:23,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:34:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:34:23,453 INFO L87 Difference]: Start difference. First operand 12684 states and 59633 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-11-19 13:34:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:23,659 INFO L93 Difference]: Finished difference Result 2698 states and 9857 transitions. [2021-11-19 13:34:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:34:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) Word has length 14 [2021-11-19 13:34:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:23,673 INFO L225 Difference]: With dead ends: 2698 [2021-11-19 13:34:23,674 INFO L226 Difference]: Without dead ends: 2698 [2021-11-19 13:34:23,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:34:23,677 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 211 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:23,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 62 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-19 13:34:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2178. [2021-11-19 13:34:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 2175 states have (on average 3.5940229885057473) internal successors, (7817), 2177 states have internal predecessors, (7817), 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) [2021-11-19 13:34:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 7817 transitions. [2021-11-19 13:34:23,763 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 7817 transitions. Word has length 14 [2021-11-19 13:34:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:23,763 INFO L470 AbstractCegarLoop]: Abstraction has 2178 states and 7817 transitions. [2021-11-19 13:34:23,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-11-19 13:34:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 7817 transitions. [2021-11-19 13:34:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 13:34:23,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:23,769 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:23,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:23,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-19 13:34:23,984 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:23,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1303527256, now seen corresponding path program 1 times [2021-11-19 13:34:23,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:23,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029159337] [2021-11-19 13:34:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:23,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:34:24,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:24,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029159337] [2021-11-19 13:34:24,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029159337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:24,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:24,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:24,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766129932] [2021-11-19 13:34:24,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:24,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:24,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:24,050 INFO L87 Difference]: Start difference. First operand 2178 states and 7817 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-19 13:34:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:24,186 INFO L93 Difference]: Finished difference Result 3751 states and 13527 transitions. [2021-11-19 13:34:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:24,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 15 [2021-11-19 13:34:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:24,201 INFO L225 Difference]: With dead ends: 3751 [2021-11-19 13:34:24,201 INFO L226 Difference]: Without dead ends: 3751 [2021-11-19 13:34:24,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:24,202 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:24,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 35 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-11-19 13:34:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 2520. [2021-11-19 13:34:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2517 states have (on average 3.6086611044894714) internal successors, (9083), 2519 states have internal predecessors, (9083), 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) [2021-11-19 13:34:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 9083 transitions. [2021-11-19 13:34:24,341 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 9083 transitions. Word has length 15 [2021-11-19 13:34:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:24,341 INFO L470 AbstractCegarLoop]: Abstraction has 2520 states and 9083 transitions. [2021-11-19 13:34:24,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-19 13:34:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 9083 transitions. [2021-11-19 13:34:24,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 13:34:24,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:24,343 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:24,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 13:34:24,345 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1440721142, now seen corresponding path program 1 times [2021-11-19 13:34:24,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:24,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581223780] [2021-11-19 13:34:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:24,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 13:34:24,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:24,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581223780] [2021-11-19 13:34:24,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581223780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:24,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:24,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:24,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724858208] [2021-11-19 13:34:24,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:24,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:24,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:24,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:24,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:24,399 INFO L87 Difference]: Start difference. First operand 2520 states and 9083 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-19 13:34:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:24,515 INFO L93 Difference]: Finished difference Result 2349 states and 8450 transitions. [2021-11-19 13:34:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:24,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) Word has length 17 [2021-11-19 13:34:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:24,524 INFO L225 Difference]: With dead ends: 2349 [2021-11-19 13:34:24,524 INFO L226 Difference]: Without dead ends: 2349 [2021-11-19 13:34:24,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:24,526 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:24,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 37 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:34:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-11-19 13:34:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2007. [2021-11-19 13:34:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 2005 states have (on average 3.5830423940149627) internal successors, (7184), 2006 states have internal predecessors, (7184), 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) [2021-11-19 13:34:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 7184 transitions. [2021-11-19 13:34:24,581 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 7184 transitions. Word has length 17 [2021-11-19 13:34:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:24,581 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 7184 transitions. [2021-11-19 13:34:24,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-19 13:34:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 7184 transitions. [2021-11-19 13:34:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 13:34:24,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:24,584 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:24,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 13:34:24,585 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:34:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1768417829, now seen corresponding path program 1 times [2021-11-19 13:34:24,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:24,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541842479] [2021-11-19 13:34:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:24,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:34:24,595 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:34:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:34:24,616 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 13:34:24,617 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:34:24,617 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2021-11-19 13:34:24,617 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-19 13:34:24,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-19 13:34:24,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-19 13:34:24,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-19 13:34:24,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-19 13:34:24,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 13:34:24,619 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:24,619 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-11-19 13:34:24,619 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-11-19 13:34:24,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,632 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,633 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,634 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,635 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,635 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,635 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,635 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,635 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,635 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,635 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,636 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,636 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,636 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,636 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,636 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,636 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,637 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,638 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,639 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,640 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,641 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,642 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,642 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,642 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,642 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,642 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,642 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,643 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,643 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,643 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,643 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,643 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,644 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,644 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,644 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,644 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,645 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,645 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,645 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,645 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,645 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,646 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,647 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,648 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,648 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,648 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,648 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,648 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,648 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,649 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,649 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,649 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,649 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,649 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,650 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,651 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,652 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,653 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,653 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,653 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,653 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,653 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,654 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,654 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,654 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,655 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,655 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,655 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,655 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,655 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,655 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,656 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,656 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,656 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,656 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,656 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,657 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,657 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,657 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,657 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,657 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,657 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,658 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,658 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,658 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,658 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,658 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,659 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,659 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,659 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,659 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,659 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:34:24,660 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 13:34:24,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:34:24,662 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:34:24,662 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-19 13:34:24,664 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:34:24,664 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 104 transitions, 253 flow [2021-11-19 13:34:24,664 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 104 transitions, 253 flow [2021-11-19 13:34:24,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 104 transitions, 253 flow [2021-11-19 13:34:24,693 INFO L129 PetriNetUnfolder]: 16/167 cut-off events. [2021-11-19 13:34:24,693 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-11-19 13:34:24,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 167 events. 16/167 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 357 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 152. Up to 12 conditions per place. [2021-11-19 13:34:24,703 INFO L116 LiptonReduction]: Number of co-enabled transitions 6160 [2021-11-19 13:34:26,414 INFO L131 LiptonReduction]: Checked pairs total: 14658 [2021-11-19 13:34:26,414 INFO L133 LiptonReduction]: Total number of compositions: 75 [2021-11-19 13:34:26,415 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 45 transitions, 135 flow [2021-11-19 13:34:28,258 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54424 states, 54335 states have (on average 6.334811815588479) internal successors, (344202), 54423 states have internal predecessors, (344202), 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) [2021-11-19 13:34:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 54424 states, 54335 states have (on average 6.334811815588479) internal successors, (344202), 54423 states have internal predecessors, (344202), 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) [2021-11-19 13:34:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:34:28,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:28,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:28,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:34:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2029209956, now seen corresponding path program 1 times [2021-11-19 13:34:28,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:28,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947250643] [2021-11-19 13:34:28,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:28,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:28,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:28,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947250643] [2021-11-19 13:34:28,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947250643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:28,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:28,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:28,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047025096] [2021-11-19 13:34:28,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:28,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:28,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:28,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:28,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:28,565 INFO L87 Difference]: Start difference. First operand has 54424 states, 54335 states have (on average 6.334811815588479) internal successors, (344202), 54423 states have internal predecessors, (344202), 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) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:29,566 INFO L93 Difference]: Finished difference Result 63717 states and 360173 transitions. [2021-11-19 13:34:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-11-19 13:34:29,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:29,999 INFO L225 Difference]: With dead ends: 63717 [2021-11-19 13:34:29,999 INFO L226 Difference]: Without dead ends: 63717 [2021-11-19 13:34:30,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:30,000 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:30,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 61 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:30,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63717 states. [2021-11-19 13:34:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63717 to 50449. [2021-11-19 13:34:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50449 states, 50417 states have (on average 5.679195509451177) internal successors, (286328), 50448 states have internal predecessors, (286328), 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) [2021-11-19 13:34:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50449 states to 50449 states and 286328 transitions. [2021-11-19 13:34:32,230 INFO L78 Accepts]: Start accepts. Automaton has 50449 states and 286328 transitions. Word has length 7 [2021-11-19 13:34:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:32,230 INFO L470 AbstractCegarLoop]: Abstraction has 50449 states and 286328 transitions. [2021-11-19 13:34:32,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-19 13:34:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50449 states and 286328 transitions. [2021-11-19 13:34:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 13:34:32,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:32,231 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:32,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 13:34:32,231 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:34:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash 155612384, now seen corresponding path program 1 times [2021-11-19 13:34:32,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:32,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918741896] [2021-11-19 13:34:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:32,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:32,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:32,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918741896] [2021-11-19 13:34:32,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918741896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:32,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:32,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:32,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425254010] [2021-11-19 13:34:32,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:32,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:32,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:32,283 INFO L87 Difference]: Start difference. First operand 50449 states and 286328 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:33,161 INFO L93 Difference]: Finished difference Result 70737 states and 401700 transitions. [2021-11-19 13:34:33,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:33,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-11-19 13:34:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:35,890 INFO L225 Difference]: With dead ends: 70737 [2021-11-19 13:34:35,890 INFO L226 Difference]: Without dead ends: 70737 [2021-11-19 13:34:35,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:35,892 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 56 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:35,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 57 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70737 states. [2021-11-19 13:34:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70737 to 60546. [2021-11-19 13:34:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60546 states, 60515 states have (on average 5.687598116169545) internal successors, (344185), 60545 states have internal predecessors, (344185), 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) [2021-11-19 13:34:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60546 states to 60546 states and 344185 transitions. [2021-11-19 13:34:39,384 INFO L78 Accepts]: Start accepts. Automaton has 60546 states and 344185 transitions. Word has length 9 [2021-11-19 13:34:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:39,384 INFO L470 AbstractCegarLoop]: Abstraction has 60546 states and 344185 transitions. [2021-11-19 13:34:39,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-19 13:34:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 60546 states and 344185 transitions. [2021-11-19 13:34:39,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:34:39,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:39,386 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:39,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 13:34:39,386 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:34:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:39,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1704823475, now seen corresponding path program 1 times [2021-11-19 13:34:39,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:39,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064264691] [2021-11-19 13:34:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:39,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:34:39,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:39,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064264691] [2021-11-19 13:34:39,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064264691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:39,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:39,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:39,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813270360] [2021-11-19 13:34:39,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:39,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:34:39,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:39,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:34:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:39,427 INFO L87 Difference]: Start difference. First operand 60546 states and 344185 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-19 13:34:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:41,095 INFO L93 Difference]: Finished difference Result 76489 states and 432985 transitions. [2021-11-19 13:34:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:34:41,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 11 [2021-11-19 13:34:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:41,702 INFO L225 Difference]: With dead ends: 76489 [2021-11-19 13:34:41,702 INFO L226 Difference]: Without dead ends: 76489 [2021-11-19 13:34:41,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:34:41,703 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:41,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 67 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76489 states. [2021-11-19 13:34:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76489 to 64216. [2021-11-19 13:34:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64216 states, 64185 states have (on average 5.678117940328737) internal successors, (364450), 64215 states have internal predecessors, (364450), 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) [2021-11-19 13:34:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64216 states to 64216 states and 364450 transitions. [2021-11-19 13:34:45,607 INFO L78 Accepts]: Start accepts. Automaton has 64216 states and 364450 transitions. Word has length 11 [2021-11-19 13:34:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:45,607 INFO L470 AbstractCegarLoop]: Abstraction has 64216 states and 364450 transitions. [2021-11-19 13:34:45,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-19 13:34:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 64216 states and 364450 transitions. [2021-11-19 13:34:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:34:45,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:45,610 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:45,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 13:34:45,610 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:34:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1952861467, now seen corresponding path program 1 times [2021-11-19 13:34:45,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:45,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383400273] [2021-11-19 13:34:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:45,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:34:45,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:45,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383400273] [2021-11-19 13:34:45,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383400273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:45,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:45,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:34:45,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676573993] [2021-11-19 13:34:45,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:45,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:34:45,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:34:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:45,656 INFO L87 Difference]: Start difference. First operand 64216 states and 364450 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:34:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:47,771 INFO L93 Difference]: Finished difference Result 90020 states and 511198 transitions. [2021-11-19 13:34:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:34:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 13 [2021-11-19 13:34:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:48,590 INFO L225 Difference]: With dead ends: 90020 [2021-11-19 13:34:48,590 INFO L226 Difference]: Without dead ends: 90020 [2021-11-19 13:34:48,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:34:48,591 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 54 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:48,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 57 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90020 states. [2021-11-19 13:34:51,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90020 to 78702. [2021-11-19 13:34:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78702 states, 78672 states have (on average 5.688071995118975) internal successors, (447492), 78701 states have internal predecessors, (447492), 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) [2021-11-19 13:34:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78702 states to 78702 states and 447492 transitions. [2021-11-19 13:34:53,246 INFO L78 Accepts]: Start accepts. Automaton has 78702 states and 447492 transitions. Word has length 13 [2021-11-19 13:34:53,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:53,246 INFO L470 AbstractCegarLoop]: Abstraction has 78702 states and 447492 transitions. [2021-11-19 13:34:53,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-19 13:34:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand 78702 states and 447492 transitions. [2021-11-19 13:34:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 13:34:53,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:53,248 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:53,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 13:34:53,249 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-19 13:34:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 801274545, now seen corresponding path program 1 times [2021-11-19 13:34:53,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:53,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032471861] [2021-11-19 13:34:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:53,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:53,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:53,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032471861] [2021-11-19 13:34:53,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032471861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:53,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136799550] [2021-11-19 13:34:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:53,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:53,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:53,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:53,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86548aab-9360-40c9-8caf-50ad31fa2768/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 13:34:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:53,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 13:34:53,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:53,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:53,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136799550] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:34:53,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:34:53,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4] total 13 [2021-11-19 13:34:53,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383238510] [2021-11-19 13:34:53,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:53,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:34:53,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:53,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:34:53,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:34:53,611 INFO L87 Difference]: Start difference. First operand 78702 states and 447492 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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)