./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan --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 bad9cc2e90a70823ddce7e56d5b422bec700ab42 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:30:19,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:30:19,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:30:19,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:30:19,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:30:19,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:30:19,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:30:19,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:30:19,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:30:19,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:30:19,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:30:19,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:30:19,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:30:19,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:30:19,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:30:19,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:30:19,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:30:19,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:30:19,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:30:19,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:30:19,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:30:19,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:30:19,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:30:19,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:30:19,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:30:19,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:30:19,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:30:19,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:30:19,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:30:19,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:30:19,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:30:19,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:30:19,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:30:19,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:30:19,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:30:19,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:30:19,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:30:19,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:30:19,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:30:19,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:30:19,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:30:19,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:30:19,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:30:19,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:30:19,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:30:19,874 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:30:19,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:30:19,874 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:30:19,875 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:30:19,875 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:30:19,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:30:19,875 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:30:19,876 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:30:19,877 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:30:19,877 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:30:19,877 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:30:19,878 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:30:19,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:30:19,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:30:19,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:30:19,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:30:19,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:30:19,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:30:19,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:30:19,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:30:19,881 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:30:19,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:30:19,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:30:19,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:30:19,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:30:19,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:30:19,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:30:19,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:30:19,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:19,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:30:19,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:30:19,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:30:19,886 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:30:19,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:30:19,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:30:19,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:30:19,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:30:19,887 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-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad9cc2e90a70823ddce7e56d5b422bec700ab42 [2020-11-28 07:30:20,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:30:20,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:30:20,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:30:20,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:30:20,199 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:30:20,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/../../sv-benchmarks/c/pthread/stack_longest-1.i [2020-11-28 07:30:20,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/data/5e94a9f40/62e2e68815204bfabccdeb96c471d3c5/FLAG9b9344a8a [2020-11-28 07:30:20,766 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:30:20,767 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/sv-benchmarks/c/pthread/stack_longest-1.i [2020-11-28 07:30:20,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/data/5e94a9f40/62e2e68815204bfabccdeb96c471d3c5/FLAG9b9344a8a [2020-11-28 07:30:21,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/data/5e94a9f40/62e2e68815204bfabccdeb96c471d3c5 [2020-11-28 07:30:21,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:30:21,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:30:21,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:21,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:30:21,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:30:21,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:21,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a151ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21, skipping insertion in model container [2020-11-28 07:30:21,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:21,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:30:21,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:30:21,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:21,742 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:30:21,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:30:21,961 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:30:21,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21 WrapperNode [2020-11-28 07:30:21,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:30:21,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:21,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:30:21,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:30:21,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:30:22,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:30:22,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:30:22,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:30:22,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... [2020-11-28 07:30:22,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:30:22,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:30:22,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:30:22,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:30:22,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:30:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-28 07:30:22,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-28 07:30:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-28 07:30:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-28 07:30:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:30:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:30:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:30:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:30:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-28 07:30:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:30:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:30:22,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:30:22,171 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:30:22,850 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:30:22,853 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-11-28 07:30:22,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:22 BoogieIcfgContainer [2020-11-28 07:30:22,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:30:22,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:30:22,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:30:22,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:30:22,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:30:21" (1/3) ... [2020-11-28 07:30:22,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535c8b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:22, skipping insertion in model container [2020-11-28 07:30:22,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:30:21" (2/3) ... [2020-11-28 07:30:22,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535c8b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:30:22, skipping insertion in model container [2020-11-28 07:30:22,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:22" (3/3) ... [2020-11-28 07:30:22,866 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2020-11-28 07:30:22,879 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:30:22,880 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:30:22,884 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:30:22,885 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:30:22,942 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,942 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,942 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,943 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,943 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,943 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,944 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,944 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,944 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,944 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,945 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,945 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,946 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,946 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,946 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,946 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,947 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,948 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,948 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,949 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,949 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,949 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,949 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,950 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,951 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,951 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,952 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,953 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,953 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,954 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,954 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,954 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,954 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,955 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,955 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,958 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,959 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,960 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,960 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,960 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,960 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,961 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,961 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,961 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,962 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,962 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,962 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,963 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,963 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,963 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,964 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,964 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,967 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,969 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,970 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,973 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,974 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,978 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,978 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,978 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,978 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,978 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,979 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,980 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,981 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,987 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,988 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,988 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,992 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,992 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,993 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,994 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,994 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,999 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:22,999 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,000 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,000 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,000 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,000 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,000 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,001 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,001 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,001 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,001 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,001 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,001 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,002 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,002 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,002 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,002 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,002 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,002 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,003 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,003 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,003 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,003 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,003 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,003 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,004 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,004 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,004 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,004 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,004 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,004 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,005 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,006 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,007 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,007 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,007 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,007 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,007 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,008 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,008 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,008 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,008 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,008 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,008 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,009 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,009 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,009 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,009 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,009 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,009 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,010 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,010 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,010 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,010 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,010 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,011 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,018 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,019 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,019 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,019 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,019 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,020 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,021 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,021 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,021 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,022 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:30:23,035 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-28 07:30:23,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:30:23,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:30:23,077 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:30:23,077 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:30:23,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:30:23,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:30:23,078 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:30:23,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:30:23,078 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:30:23,096 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:30:23,098 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-28 07:30:23,101 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-28 07:30:23,102 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 340 flow [2020-11-28 07:30:23,222 INFO L129 PetriNetUnfolder]: 13/159 cut-off events. [2020-11-28 07:30:23,222 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-28 07:30:23,231 INFO L80 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 159 events. 13/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 449 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 123. Up to 3 conditions per place. [2020-11-28 07:30:23,241 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-11-28 07:30:26,769 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-28 07:30:27,270 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-11-28 07:30:27,381 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-28 07:30:28,169 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 135 [2020-11-28 07:30:28,519 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-28 07:30:28,748 INFO L131 LiptonReduction]: Checked pairs total: 11922 [2020-11-28 07:30:28,753 INFO L133 LiptonReduction]: Total number of compositions: 153 [2020-11-28 07:30:28,759 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-11-28 07:30:28,795 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-11-28 07:30:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-11-28 07:30:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:30:28,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:28,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:30:28,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:28,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1856423894, now seen corresponding path program 1 times [2020-11-28 07:30:28,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:28,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843676760] [2020-11-28 07:30:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:29,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843676760] [2020-11-28 07:30:29,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:29,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:29,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850828695] [2020-11-28 07:30:29,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:29,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:29,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:29,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:29,047 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-11-28 07:30:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:29,124 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-11-28 07:30:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:29,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:30:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:29,145 INFO L225 Difference]: With dead ends: 602 [2020-11-28 07:30:29,146 INFO L226 Difference]: Without dead ends: 580 [2020-11-28 07:30:29,147 INFO L677 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 [2020-11-28 07:30:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-11-28 07:30:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-11-28 07:30:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-28 07:30:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-11-28 07:30:29,272 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-11-28 07:30:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:29,273 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-11-28 07:30:29,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:29,273 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-11-28 07:30:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:30:29,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:29,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:29,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:30:29,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1263754107, now seen corresponding path program 1 times [2020-11-28 07:30:29,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:29,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134306706] [2020-11-28 07:30:29,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:29,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134306706] [2020-11-28 07:30:29,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:29,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:29,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606377156] [2020-11-28 07:30:29,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:29,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:29,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:29,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:29,424 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-11-28 07:30:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:29,441 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-11-28 07:30:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:29,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:30:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:29,446 INFO L225 Difference]: With dead ends: 530 [2020-11-28 07:30:29,447 INFO L226 Difference]: Without dead ends: 508 [2020-11-28 07:30:29,447 INFO L677 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 [2020-11-28 07:30:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-28 07:30:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-11-28 07:30:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-28 07:30:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-11-28 07:30:29,475 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-11-28 07:30:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:29,476 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-11-28 07:30:29,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-11-28 07:30:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:30:29,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:29,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:29,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:30:29,478 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1433094520, now seen corresponding path program 1 times [2020-11-28 07:30:29,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:29,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062997965] [2020-11-28 07:30:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:29,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062997965] [2020-11-28 07:30:29,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:29,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:30:29,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966207108] [2020-11-28 07:30:29,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:29,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:29,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:29,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:29,531 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-11-28 07:30:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:29,565 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-11-28 07:30:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:29,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:30:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:29,577 INFO L225 Difference]: With dead ends: 504 [2020-11-28 07:30:29,577 INFO L226 Difference]: Without dead ends: 504 [2020-11-28 07:30:29,577 INFO L677 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 [2020-11-28 07:30:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-28 07:30:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-28 07:30:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-28 07:30:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-11-28 07:30:29,597 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-11-28 07:30:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:29,598 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-11-28 07:30:29,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-11-28 07:30:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:30:29,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:29,600 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:29,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:30:29,600 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1251716059, now seen corresponding path program 1 times [2020-11-28 07:30:29,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:29,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39218211] [2020-11-28 07:30:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:29,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39218211] [2020-11-28 07:30:29,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081845496] [2020-11-28 07:30:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:29,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:30:29,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:29,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:29,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1507180257] [2020-11-28 07:30:29,984 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$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:269) 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:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:111) 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:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2020-11-28 07:30:29,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:30:29,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2020-11-28 07:30:29,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576449721] [2020-11-28 07:30:29,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:30:29,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:29,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:30:29,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:30:29,988 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 10 states. [2020-11-28 07:30:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:30,339 INFO L93 Difference]: Finished difference Result 1250 states and 3210 transitions. [2020-11-28 07:30:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:30:30,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 07:30:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:30,350 INFO L225 Difference]: With dead ends: 1250 [2020-11-28 07:30:30,351 INFO L226 Difference]: Without dead ends: 1250 [2020-11-28 07:30:30,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:30:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-11-28 07:30:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 904. [2020-11-28 07:30:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-11-28 07:30:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2416 transitions. [2020-11-28 07:30:30,388 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2416 transitions. Word has length 14 [2020-11-28 07:30:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:30,389 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 2416 transitions. [2020-11-28 07:30:30,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:30:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2416 transitions. [2020-11-28 07:30:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:30:30,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:30,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:30,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:30,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:30,620 INFO L82 PathProgramCache]: Analyzing trace with hash -947618172, now seen corresponding path program 1 times [2020-11-28 07:30:30,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:30,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536134364] [2020-11-28 07:30:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:30,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536134364] [2020-11-28 07:30:30,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:30,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:30:30,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594197036] [2020-11-28 07:30:30,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:30:30,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:30:30,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:30,710 INFO L87 Difference]: Start difference. First operand 904 states and 2416 transitions. Second operand 3 states. [2020-11-28 07:30:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:30,745 INFO L93 Difference]: Finished difference Result 439 states and 991 transitions. [2020-11-28 07:30:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:30:30,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 07:30:30,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:30,750 INFO L225 Difference]: With dead ends: 439 [2020-11-28 07:30:30,750 INFO L226 Difference]: Without dead ends: 435 [2020-11-28 07:30:30,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:30:30,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-11-28 07:30:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 403. [2020-11-28 07:30:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:30:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 899 transitions. [2020-11-28 07:30:30,763 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 899 transitions. Word has length 16 [2020-11-28 07:30:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:30,763 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 899 transitions. [2020-11-28 07:30:30,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:30:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 899 transitions. [2020-11-28 07:30:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:30:30,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:30,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:30,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:30:30,766 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:30,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:30,767 INFO L82 PathProgramCache]: Analyzing trace with hash 690121372, now seen corresponding path program 1 times [2020-11-28 07:30:30,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:30,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659848115] [2020-11-28 07:30:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:30,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659848115] [2020-11-28 07:30:30,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:30,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:30:30,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864467993] [2020-11-28 07:30:30,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:30:30,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:30,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:30:30,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:30:30,854 INFO L87 Difference]: Start difference. First operand 403 states and 899 transitions. Second operand 5 states. [2020-11-28 07:30:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:30,973 INFO L93 Difference]: Finished difference Result 563 states and 1255 transitions. [2020-11-28 07:30:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:30:30,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 07:30:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:30,978 INFO L225 Difference]: With dead ends: 563 [2020-11-28 07:30:30,978 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:30:30,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:30:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:30:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 441. [2020-11-28 07:30:30,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-11-28 07:30:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 990 transitions. [2020-11-28 07:30:30,995 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 990 transitions. Word has length 17 [2020-11-28 07:30:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:30,996 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 990 transitions. [2020-11-28 07:30:30,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:30:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 990 transitions. [2020-11-28 07:30:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:30:30,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:30,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:30,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:30:30,998 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:30,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1892561304, now seen corresponding path program 1 times [2020-11-28 07:30:30,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:30,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552567880] [2020-11-28 07:30:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:31,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552567880] [2020-11-28 07:30:31,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:31,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:30:31,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329943726] [2020-11-28 07:30:31,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:30:31,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:31,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:30:31,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:30:31,684 INFO L87 Difference]: Start difference. First operand 441 states and 990 transitions. Second operand 8 states. [2020-11-28 07:30:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:32,141 INFO L93 Difference]: Finished difference Result 761 states and 1691 transitions. [2020-11-28 07:30:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:30:32,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-28 07:30:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:32,147 INFO L225 Difference]: With dead ends: 761 [2020-11-28 07:30:32,147 INFO L226 Difference]: Without dead ends: 761 [2020-11-28 07:30:32,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:30:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-11-28 07:30:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 578. [2020-11-28 07:30:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-11-28 07:30:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1337 transitions. [2020-11-28 07:30:32,187 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1337 transitions. Word has length 21 [2020-11-28 07:30:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:32,187 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1337 transitions. [2020-11-28 07:30:32,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:30:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1337 transitions. [2020-11-28 07:30:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:30:32,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:32,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:32,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:30:32,189 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:32,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:32,190 INFO L82 PathProgramCache]: Analyzing trace with hash 158059450, now seen corresponding path program 2 times [2020-11-28 07:30:32,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:32,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039513189] [2020-11-28 07:30:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:32,818 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-11-28 07:30:32,967 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-11-28 07:30:33,141 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-11-28 07:30:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:33,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039513189] [2020-11-28 07:30:33,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:33,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:30:33,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508250510] [2020-11-28 07:30:33,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:30:33,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:33,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:30:33,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:30:33,234 INFO L87 Difference]: Start difference. First operand 578 states and 1337 transitions. Second operand 8 states. [2020-11-28 07:30:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:33,707 INFO L93 Difference]: Finished difference Result 878 states and 1996 transitions. [2020-11-28 07:30:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:30:33,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-28 07:30:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:33,715 INFO L225 Difference]: With dead ends: 878 [2020-11-28 07:30:33,715 INFO L226 Difference]: Without dead ends: 878 [2020-11-28 07:30:33,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:30:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-11-28 07:30:33,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 579. [2020-11-28 07:30:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-11-28 07:30:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1338 transitions. [2020-11-28 07:30:33,736 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1338 transitions. Word has length 21 [2020-11-28 07:30:33,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:33,737 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 1338 transitions. [2020-11-28 07:30:33,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:30:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1338 transitions. [2020-11-28 07:30:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:30:33,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:33,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:33,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:30:33,739 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:33,739 INFO L82 PathProgramCache]: Analyzing trace with hash 458343232, now seen corresponding path program 3 times [2020-11-28 07:30:33,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:33,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747245982] [2020-11-28 07:30:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:34,293 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 20 [2020-11-28 07:30:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:34,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747245982] [2020-11-28 07:30:34,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:30:34,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:30:34,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740202427] [2020-11-28 07:30:34,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:30:34,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:30:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:30:34,328 INFO L87 Difference]: Start difference. First operand 579 states and 1338 transitions. Second operand 8 states. [2020-11-28 07:30:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:34,797 INFO L93 Difference]: Finished difference Result 1007 states and 2318 transitions. [2020-11-28 07:30:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:30:34,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-28 07:30:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:34,806 INFO L225 Difference]: With dead ends: 1007 [2020-11-28 07:30:34,806 INFO L226 Difference]: Without dead ends: 1007 [2020-11-28 07:30:34,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:30:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-11-28 07:30:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 560. [2020-11-28 07:30:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-11-28 07:30:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1291 transitions. [2020-11-28 07:30:34,832 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1291 transitions. Word has length 21 [2020-11-28 07:30:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:34,834 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1291 transitions. [2020-11-28 07:30:34,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:30:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1291 transitions. [2020-11-28 07:30:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:30:34,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:34,836 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:34,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:30:34,836 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:34,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1256686503, now seen corresponding path program 1 times [2020-11-28 07:30:34,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:34,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106369935] [2020-11-28 07:30:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:30:34,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106369935] [2020-11-28 07:30:34,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068494976] [2020-11-28 07:30:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:30:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:30:35,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:30:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:30:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:30:35,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:30:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:30:35,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:30:35,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2020-11-28 07:30:35,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641550752] [2020-11-28 07:30:35,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:30:35,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:30:35,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:30:35,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:30:35,159 INFO L87 Difference]: Start difference. First operand 560 states and 1291 transitions. Second operand 10 states. [2020-11-28 07:30:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:30:35,387 INFO L93 Difference]: Finished difference Result 822 states and 1855 transitions. [2020-11-28 07:30:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:30:35,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-11-28 07:30:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:30:35,394 INFO L225 Difference]: With dead ends: 822 [2020-11-28 07:30:35,394 INFO L226 Difference]: Without dead ends: 822 [2020-11-28 07:30:35,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:30:35,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-11-28 07:30:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 586. [2020-11-28 07:30:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-11-28 07:30:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1362 transitions. [2020-11-28 07:30:35,422 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1362 transitions. Word has length 24 [2020-11-28 07:30:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:30:35,423 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1362 transitions. [2020-11-28 07:30:35,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:30:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1362 transitions. [2020-11-28 07:30:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:30:35,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:30:35,425 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:30:35,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:30:35,640 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:30:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:30:35,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1256691651, now seen corresponding path program 1 times [2020-11-28 07:30:35,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:30:35,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636544320] [2020-11-28 07:30:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:30:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:35,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:30:35,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:30:35,771 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:30:35,772 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:30:35,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:30:35,772 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:30:35,773 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:30:35,773 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:30:35,780 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [636] [636] L994-1-->L996-1: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In824092960 4294967296))) (and (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out824092960| 1) (= |t1Thread1of1ForFork0_push_#in~x_Out824092960| .cse0) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out824092960 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out824092960|) (< .cse0 800) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out824092960| |~#arr~0.base_In824092960|) (= |~#arr~0.offset_In824092960| |t1Thread1of1ForFork0_push_#in~stack.offset_Out824092960|))) InVars {~#arr~0.offset=|~#arr~0.offset_In824092960|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In824092960, ~#arr~0.base=|~#arr~0.base_In824092960|} OutVars{~#arr~0.offset=|~#arr~0.offset_In824092960|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out824092960|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out824092960, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out824092960|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In824092960, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out824092960|, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out824092960|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out824092960|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out824092960|, ~#arr~0.base=|~#arr~0.base_In824092960|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-11-28 07:30:35,790 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [635] [635] L996-2-->L999: Formula: (and (= ~flag~0_Out-1941541929 1) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-1941541929| |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In-1941541929|) (not (= |t1Thread1of1ForFork0_#t~ret47_In-1941541929| (- 1))) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-1941541929| |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-1941541929|) (<= 0 (+ |t1Thread1of1ForFork0_#t~ret47_In-1941541929| 2147483648)) (<= |t1Thread1of1ForFork0_#t~ret47_In-1941541929| 2147483647)) InVars {t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_In-1941541929|, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In-1941541929|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-1941541929|} OutVars{t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_Out-1941541929|, ~flag~0=~flag~0_Out-1941541929, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-1941541929|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-1941541929|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret47, ~flag~0, t1Thread1of1ForFork0_reach_error_#t~nondet2.base, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-28 07:30:35,798 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L1011-4-->L1006-6: Formula: (and (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In-2097321809|)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-2097321809| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-2097321809|) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-2097321809| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-2097321809|) (= (+ t2Thread1of1ForFork1_~i~1_In-2097321809 1) t2Thread1of1ForFork1_~i~1_Out-2097321809) (= (store |#pthreadsMutex_In-2097321809| |~#m~0.base_In-2097321809| (store (select |#pthreadsMutex_In-2097321809| |~#m~0.base_In-2097321809|) |~#m~0.offset_In-2097321809| 0)) |#pthreadsMutex_Out-2097321809|)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-2097321809|, #pthreadsMutex=|#pthreadsMutex_In-2097321809|, ~#m~0.base=|~#m~0.base_In-2097321809|, ~#m~0.offset=|~#m~0.offset_In-2097321809|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In-2097321809|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In-2097321809, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-2097321809|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out-2097321809|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-2097321809|, ~#m~0.base=|~#m~0.base_In-2097321809|, ~#m~0.offset=|~#m~0.offset_In-2097321809|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out-2097321809|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out-2097321809|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out-2097321809, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-2097321809|} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_reach_error_#t~nondet2.base, t2Thread1of1ForFork1_#t~post48, t2Thread1of1ForFork1_#t~ret50, t2Thread1of1ForFork1_~i~1, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-28 07:30:35,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:30:35 BasicIcfg [2020-11-28 07:30:35,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:30:35,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:30:35,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:30:35,861 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:30:35,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:30:22" (3/4) ... [2020-11-28 07:30:35,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:30:35,866 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [636] [636] L994-1-->L996-1: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In824092960 4294967296))) (and (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out824092960| 1) (= |t1Thread1of1ForFork0_push_#in~x_Out824092960| .cse0) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out824092960 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out824092960|) (< .cse0 800) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out824092960| |~#arr~0.base_In824092960|) (= |~#arr~0.offset_In824092960| |t1Thread1of1ForFork0_push_#in~stack.offset_Out824092960|))) InVars {~#arr~0.offset=|~#arr~0.offset_In824092960|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In824092960, ~#arr~0.base=|~#arr~0.base_In824092960|} OutVars{~#arr~0.offset=|~#arr~0.offset_In824092960|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out824092960|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out824092960, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out824092960|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In824092960, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out824092960|, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out824092960|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out824092960|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out824092960|, ~#arr~0.base=|~#arr~0.base_In824092960|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-11-28 07:30:35,872 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [635] [635] L996-2-->L999: Formula: (and (= ~flag~0_Out-1941541929 1) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-1941541929| |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In-1941541929|) (not (= |t1Thread1of1ForFork0_#t~ret47_In-1941541929| (- 1))) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-1941541929| |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-1941541929|) (<= 0 (+ |t1Thread1of1ForFork0_#t~ret47_In-1941541929| 2147483648)) (<= |t1Thread1of1ForFork0_#t~ret47_In-1941541929| 2147483647)) InVars {t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_In-1941541929|, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In-1941541929|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-1941541929|} OutVars{t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_Out-1941541929|, ~flag~0=~flag~0_Out-1941541929, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-1941541929|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-1941541929|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret47, ~flag~0, t1Thread1of1ForFork0_reach_error_#t~nondet2.base, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-28 07:30:35,879 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L1011-4-->L1006-6: Formula: (and (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In-2097321809|)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-2097321809| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-2097321809|) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-2097321809| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-2097321809|) (= (+ t2Thread1of1ForFork1_~i~1_In-2097321809 1) t2Thread1of1ForFork1_~i~1_Out-2097321809) (= (store |#pthreadsMutex_In-2097321809| |~#m~0.base_In-2097321809| (store (select |#pthreadsMutex_In-2097321809| |~#m~0.base_In-2097321809|) |~#m~0.offset_In-2097321809| 0)) |#pthreadsMutex_Out-2097321809|)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-2097321809|, #pthreadsMutex=|#pthreadsMutex_In-2097321809|, ~#m~0.base=|~#m~0.base_In-2097321809|, ~#m~0.offset=|~#m~0.offset_In-2097321809|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In-2097321809|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In-2097321809, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-2097321809|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out-2097321809|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-2097321809|, ~#m~0.base=|~#m~0.base_In-2097321809|, ~#m~0.offset=|~#m~0.offset_In-2097321809|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out-2097321809|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out-2097321809|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out-2097321809, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-2097321809|} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_reach_error_#t~nondet2.base, t2Thread1of1ForFork1_#t~post48, t2Thread1of1ForFork1_#t~ret50, t2Thread1of1ForFork1_~i~1, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-28 07:30:35,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b470a3e6-8b46-468e-8d2e-f8eb19ec2f46/bin/utaipan/witness.graphml [2020-11-28 07:30:35,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:30:35,930 INFO L168 Benchmark]: Toolchain (without parser) took 14840.19 ms. Allocated memory was 90.2 MB in the beginning and 243.3 MB in the end (delta: 153.1 MB). Free memory was 57.2 MB in the beginning and 161.8 MB in the end (delta: -104.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:35,930 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 48.2 MB in the beginning and 48.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:35,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.46 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.2 MB in the beginning and 69.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:35,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.08 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 66.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:35,932 INFO L168 Benchmark]: Boogie Preprocessor took 32.56 ms. Allocated memory is still 109.1 MB. Free memory was 66.4 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:30:35,932 INFO L168 Benchmark]: RCFGBuilder took 781.61 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 71.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:35,933 INFO L168 Benchmark]: TraceAbstraction took 13001.64 ms. Allocated memory was 109.1 MB in the beginning and 243.3 MB in the end (delta: 134.2 MB). Free memory was 71.4 MB in the beginning and 173.3 MB in the end (delta: -101.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:35,933 INFO L168 Benchmark]: Witness Printer took 68.62 ms. Allocated memory is still 243.3 MB. Free memory was 173.3 MB in the beginning and 161.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:30:35,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 48.2 MB in the beginning and 48.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 869.46 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.2 MB in the beginning and 69.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.08 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 66.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.56 ms. Allocated memory is still 109.1 MB. Free memory was 66.4 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 781.61 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 71.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13001.64 ms. Allocated memory was 109.1 MB in the beginning and 243.3 MB in the end (delta: 134.2 MB). Free memory was 71.4 MB in the beginning and 173.3 MB in the end (delta: -101.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. * Witness Printer took 68.62 ms. Allocated memory is still 243.3 MB. Free memory was 173.3 MB in the beginning and 161.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 5574 VarBasedMoverChecksPositive, 81 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 302 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.6s, 152 PlacesBefore, 40 PlacesAfterwards, 159 TransitionsBefore, 40 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 11922 MoverChecksTotal - CounterExampleResult [Line: 20]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(800)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1020] 0 pthread_t id1, id2; [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L989] 1 int i; [L990] 1 unsigned int tmp; [L991] 1 i=0 VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L991] COND TRUE 1 i<(800) [L994] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L961] COND FALSE 1 !(top==(800)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L1005] 2 int i; [L1006] 2 i=0 VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L953] 1 return top; [L968] 1 stack[get_top()] = x [L945] 1 top++ [L971] 1 return 0; [L991] 1 i++ VAL [arr={9:0}, flag=1, m={13:0}, top=1] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L953] 2 return top; [L975] COND FALSE 2 !(get_top()==0) [L949] 2 top-- [L953] 2 return top; [L983] EXPR 2 stack[get_top()] [L983] 2 return stack[get_top()]; [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L953] 2 return top; [L975] COND TRUE 2 get_top()==0 [L978] 2 return (-2); [L1011] COND TRUE 2 !(pop(arr)!=(-2)) [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack_longest-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={9:0}, flag=1, m={13:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.6s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 458 SDtfs, 663 SDslu, 1202 SDs, 0 SdLazy, 612 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1858 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 82944 SizeOfPredicates, 6 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 10/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...