./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-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_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/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 13f29567e5bda53c24647cdbec0951bfcde74176 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:37:42,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:42,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:42,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:42,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:42,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:42,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:42,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:42,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:42,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:42,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:42,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:42,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:42,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:42,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:42,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:42,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:42,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:42,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:42,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:42,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:42,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:42,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:42,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:42,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:42,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:42,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:42,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:42,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:42,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:42,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:42,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:42,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:42,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:42,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:42,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:42,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:42,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:42,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:42,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:42,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:42,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:42,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:42,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:42,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:42,405 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:42,406 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:42,406 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:42,406 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:42,406 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:42,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:42,407 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:42,408 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:42,408 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:42,408 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:42,409 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:42,409 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:42,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:42,410 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:42,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:42,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:42,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:42,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:42,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:42,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:42,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:42,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:42,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:42,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:42,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:42,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:42,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:42,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:42,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:42,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:42,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:42,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:42,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:42,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:42,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:42,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:42,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:42,418 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_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13f29567e5bda53c24647cdbec0951bfcde74176 [2020-11-28 07:37:42,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:42,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:42,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:42,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:42,738 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:42,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/../../sv-benchmarks/c/pthread/stack_longer-1.i [2020-11-28 07:37:42,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/data/f9e66f704/0c3c274ff9124c8486949d29e8616a71/FLAG230a0930b [2020-11-28 07:37:43,471 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:43,472 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/sv-benchmarks/c/pthread/stack_longer-1.i [2020-11-28 07:37:43,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/data/f9e66f704/0c3c274ff9124c8486949d29e8616a71/FLAG230a0930b [2020-11-28 07:37:43,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/data/f9e66f704/0c3c274ff9124c8486949d29e8616a71 [2020-11-28 07:37:43,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:43,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:43,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:43,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:43,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:43,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b0383a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:43, skipping insertion in model container [2020-11-28 07:37:43,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:43" (1/1) ... [2020-11-28 07:37:43,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:43,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:44,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:44,462 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:44,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:44,695 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:44,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44 WrapperNode [2020-11-28 07:37:44,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:44,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:44,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:44,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:44,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:44,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:44,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:44,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:44,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... [2020-11-28 07:37:44,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:44,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:44,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:44,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:44,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/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 07:37:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-28 07:37:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-28 07:37:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-28 07:37:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-28 07:37:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:37:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:37:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:37:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-28 07:37:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:44,932 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 07:37:45,543 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:45,544 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-11-28 07:37:45,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:45 BoogieIcfgContainer [2020-11-28 07:37:45,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:45,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:45,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:45,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:45,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:43" (1/3) ... [2020-11-28 07:37:45,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e2fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:45, skipping insertion in model container [2020-11-28 07:37:45,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:44" (2/3) ... [2020-11-28 07:37:45,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e2fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:45, skipping insertion in model container [2020-11-28 07:37:45,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:45" (3/3) ... [2020-11-28 07:37:45,556 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2020-11-28 07:37:45,569 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:37:45,569 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:45,574 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:37:45,575 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:37:45,632 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,632 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,632 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,633 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,634 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,634 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,635 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,635 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,636 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,636 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,636 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,637 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,637 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,637 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,637 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,637 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,638 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,639 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,639 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,639 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,639 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,639 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,640 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,640 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,640 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,640 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,640 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,641 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,641 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,641 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,641 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,642 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,642 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,642 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,642 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,642 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,643 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,643 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,643 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,643 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,644 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,646 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,646 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,646 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,649 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,650 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,650 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,650 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,650 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,651 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,651 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,651 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,651 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,652 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,652 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,652 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,652 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,653 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,653 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,653 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,653 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,654 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,654 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,655 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,655 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,655 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,655 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,655 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,656 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,656 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,656 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,657 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,658 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,659 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,662 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,662 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,662 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,662 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,663 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,664 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,668 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,668 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,668 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,669 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,669 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,669 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,669 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,669 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,670 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,670 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,670 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,670 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,670 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,671 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,671 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,671 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,671 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,672 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,672 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,672 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,678 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,678 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,678 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,678 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,678 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,679 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,680 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,681 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,681 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:37:45,691 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-28 07:37:45,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:37:45,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:45,727 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:45,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:45,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:45,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:45,727 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:45,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:45,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:45,747 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:37:45,749 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-28 07:37:45,753 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-28 07:37:45,755 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 340 flow [2020-11-28 07:37:45,847 INFO L129 PetriNetUnfolder]: 13/159 cut-off events. [2020-11-28 07:37:45,847 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-28 07:37:45,856 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 443 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 07:37:45,866 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-11-28 07:37:48,924 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-28 07:37:49,058 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-28 07:37:49,412 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-28 07:37:49,692 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-28 07:37:49,841 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-28 07:37:50,892 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 132 [2020-11-28 07:37:51,261 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-28 07:37:51,280 INFO L131 LiptonReduction]: Checked pairs total: 12656 [2020-11-28 07:37:51,280 INFO L133 LiptonReduction]: Total number of compositions: 154 [2020-11-28 07:37:51,285 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 41 transitions, 104 flow [2020-11-28 07:37:51,313 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-11-28 07:37:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-11-28 07:37:51,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:37:51,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:51,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:37:51,322 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 07:37:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:51,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1712809205, now seen corresponding path program 1 times [2020-11-28 07:37:51,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:51,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227080895] [2020-11-28 07:37:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:51,628 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 07:37:51,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227080895] [2020-11-28 07:37:51,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:51,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:51,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635294963] [2020-11-28 07:37:51,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:51,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:51,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:51,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:51,650 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-11-28 07:37:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:51,777 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-11-28 07:37:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:51,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:37:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:51,808 INFO L225 Difference]: With dead ends: 602 [2020-11-28 07:37:51,809 INFO L226 Difference]: Without dead ends: 580 [2020-11-28 07:37:51,811 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 07:37:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-11-28 07:37:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-11-28 07:37:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-28 07:37:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-11-28 07:37:51,935 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-11-28 07:37:51,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:51,936 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-11-28 07:37:51,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:51,936 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-11-28 07:37:51,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:37:51,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:51,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:51,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:51,937 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 07:37:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1187168640, now seen corresponding path program 1 times [2020-11-28 07:37:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:51,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606948362] [2020-11-28 07:37:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:52,077 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 07:37:52,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606948362] [2020-11-28 07:37:52,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:52,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:52,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593536471] [2020-11-28 07:37:52,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:52,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:52,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:52,080 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-11-28 07:37:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:52,110 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-11-28 07:37:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:52,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:37:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:52,119 INFO L225 Difference]: With dead ends: 530 [2020-11-28 07:37:52,119 INFO L226 Difference]: Without dead ends: 508 [2020-11-28 07:37:52,119 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 07:37:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-28 07:37:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-11-28 07:37:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-28 07:37:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-11-28 07:37:52,160 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-11-28 07:37:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:52,161 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-11-28 07:37:52,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-11-28 07:37:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:37:52,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:52,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:52,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:52,164 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 07:37:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:52,165 INFO L82 PathProgramCache]: Analyzing trace with hash -645541621, now seen corresponding path program 1 times [2020-11-28 07:37:52,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:52,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598832905] [2020-11-28 07:37:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:52,252 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 07:37:52,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598832905] [2020-11-28 07:37:52,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:52,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:52,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862170899] [2020-11-28 07:37:52,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:52,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:52,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:52,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:52,255 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-11-28 07:37:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:52,272 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-11-28 07:37:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:52,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:37:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:52,277 INFO L225 Difference]: With dead ends: 504 [2020-11-28 07:37:52,278 INFO L226 Difference]: Without dead ends: 504 [2020-11-28 07:37:52,278 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 07:37:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-28 07:37:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-28 07:37:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-28 07:37:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-11-28 07:37:52,297 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-11-28 07:37:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:52,297 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-11-28 07:37:52,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-11-28 07:37:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:37:52,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:52,307 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:52,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:52,307 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 07:37:52,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:52,309 INFO L82 PathProgramCache]: Analyzing trace with hash 285026319, now seen corresponding path program 1 times [2020-11-28 07:37:52,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:52,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876339177] [2020-11-28 07:37:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:52,423 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 07:37:52,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876339177] [2020-11-28 07:37:52,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178884868] [2020-11-28 07:37:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/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 07:37:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:52,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:37:52,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:52,690 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 07:37:52,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:52,746 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 07:37:52,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137702266] [2020-11-28 07:37:52,760 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 07:37:52,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:37:52,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2020-11-28 07:37:52,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137797725] [2020-11-28 07:37:52,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:37:52,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:52,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:37:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:37:52,767 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 10 states. [2020-11-28 07:37:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:53,176 INFO L93 Difference]: Finished difference Result 1250 states and 3210 transitions. [2020-11-28 07:37:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:37:53,177 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 07:37:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:53,187 INFO L225 Difference]: With dead ends: 1250 [2020-11-28 07:37:53,187 INFO L226 Difference]: Without dead ends: 1250 [2020-11-28 07:37:53,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:37:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-11-28 07:37:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 904. [2020-11-28 07:37:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-11-28 07:37:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2416 transitions. [2020-11-28 07:37:53,250 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2416 transitions. Word has length 14 [2020-11-28 07:37:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:53,250 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 2416 transitions. [2020-11-28 07:37:53,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:37:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2416 transitions. [2020-11-28 07:37:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:37:53,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:53,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:53,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:53,466 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 07:37:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:53,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1610706921, now seen corresponding path program 1 times [2020-11-28 07:37:53,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:53,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218970454] [2020-11-28 07:37:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:53,544 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 07:37:53,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218970454] [2020-11-28 07:37:53,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:53,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:53,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543338364] [2020-11-28 07:37:53,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:53,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:53,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:53,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:53,546 INFO L87 Difference]: Start difference. First operand 904 states and 2416 transitions. Second operand 3 states. [2020-11-28 07:37:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:53,575 INFO L93 Difference]: Finished difference Result 439 states and 991 transitions. [2020-11-28 07:37:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:53,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 07:37:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:53,582 INFO L225 Difference]: With dead ends: 439 [2020-11-28 07:37:53,582 INFO L226 Difference]: Without dead ends: 435 [2020-11-28 07:37:53,582 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 07:37:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-11-28 07:37:53,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 403. [2020-11-28 07:37:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:37:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 899 transitions. [2020-11-28 07:37:53,610 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 899 transitions. Word has length 16 [2020-11-28 07:37:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:53,610 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 899 transitions. [2020-11-28 07:37:53,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 899 transitions. [2020-11-28 07:37:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:37:53,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:53,612 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 07:37:53,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:37:53,612 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 07:37:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:53,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1867326303, now seen corresponding path program 1 times [2020-11-28 07:37:53,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:53,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637127523] [2020-11-28 07:37:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:53,700 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 07:37:53,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637127523] [2020-11-28 07:37:53,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:53,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:37:53,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311575691] [2020-11-28 07:37:53,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:53,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:53,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:53,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:53,702 INFO L87 Difference]: Start difference. First operand 403 states and 899 transitions. Second operand 5 states. [2020-11-28 07:37:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:53,795 INFO L93 Difference]: Finished difference Result 563 states and 1255 transitions. [2020-11-28 07:37:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:53,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 07:37:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:53,801 INFO L225 Difference]: With dead ends: 563 [2020-11-28 07:37:53,801 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:37:53,802 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 07:37:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:37:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 441. [2020-11-28 07:37:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-11-28 07:37:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 990 transitions. [2020-11-28 07:37:53,817 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 990 transitions. Word has length 17 [2020-11-28 07:37:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:53,817 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 990 transitions. [2020-11-28 07:37:53,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:53,817 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 990 transitions. [2020-11-28 07:37:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:37:53,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:53,818 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 07:37:53,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:37:53,819 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 07:37:53,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:53,829 INFO L82 PathProgramCache]: Analyzing trace with hash -411284068, now seen corresponding path program 1 times [2020-11-28 07:37:53,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:53,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231303480] [2020-11-28 07:37:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:54,156 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 07:37:54,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231303480] [2020-11-28 07:37:54,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:54,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:37:54,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954654123] [2020-11-28 07:37:54,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:37:54,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:54,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:37:54,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:37:54,161 INFO L87 Difference]: Start difference. First operand 441 states and 990 transitions. Second operand 8 states. [2020-11-28 07:37:54,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:54,448 INFO L93 Difference]: Finished difference Result 741 states and 1649 transitions. [2020-11-28 07:37:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:37:54,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-28 07:37:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:54,454 INFO L225 Difference]: With dead ends: 741 [2020-11-28 07:37:54,454 INFO L226 Difference]: Without dead ends: 741 [2020-11-28 07:37:54,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:37:54,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-11-28 07:37:54,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 574. [2020-11-28 07:37:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-11-28 07:37:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1328 transitions. [2020-11-28 07:37:54,476 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1328 transitions. Word has length 21 [2020-11-28 07:37:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:54,477 INFO L481 AbstractCegarLoop]: Abstraction has 574 states and 1328 transitions. [2020-11-28 07:37:54,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:37:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1328 transitions. [2020-11-28 07:37:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 07:37:54,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:54,479 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 07:37:54,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:37:54,479 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 07:37:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1129438590, now seen corresponding path program 2 times [2020-11-28 07:37:54,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:54,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948370629] [2020-11-28 07:37:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:54,831 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 07:37:54,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948370629] [2020-11-28 07:37:54,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:54,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:37:54,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965964784] [2020-11-28 07:37:54,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:37:54,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:37:54,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:37:54,834 INFO L87 Difference]: Start difference. First operand 574 states and 1328 transitions. Second operand 8 states. [2020-11-28 07:37:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,135 INFO L93 Difference]: Finished difference Result 861 states and 1950 transitions. [2020-11-28 07:37:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:37:55,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-28 07:37:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,142 INFO L225 Difference]: With dead ends: 861 [2020-11-28 07:37:55,142 INFO L226 Difference]: Without dead ends: 861 [2020-11-28 07:37:55,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:37:55,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-11-28 07:37:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 560. [2020-11-28 07:37:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-11-28 07:37:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1291 transitions. [2020-11-28 07:37:55,163 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1291 transitions. Word has length 21 [2020-11-28 07:37:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,164 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1291 transitions. [2020-11-28 07:37:55,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:37:55,164 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1291 transitions. [2020-11-28 07:37:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:37:55,165 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,165 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 07:37:55,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:37:55,166 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 07:37:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash 979235810, now seen corresponding path program 1 times [2020-11-28 07:37:55,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120689488] [2020-11-28 07:37:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,259 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 07:37:55,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120689488] [2020-11-28 07:37:55,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667050276] [2020-11-28 07:37:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/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 07:37:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:37:55,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:55,403 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 07:37:55,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:55,467 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 07:37:55,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:37:55,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2020-11-28 07:37:55,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945451730] [2020-11-28 07:37:55,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:37:55,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:37:55,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:37:55,470 INFO L87 Difference]: Start difference. First operand 560 states and 1291 transitions. Second operand 10 states. [2020-11-28 07:37:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:55,705 INFO L93 Difference]: Finished difference Result 822 states and 1855 transitions. [2020-11-28 07:37:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:37:55,706 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-11-28 07:37:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:55,712 INFO L225 Difference]: With dead ends: 822 [2020-11-28 07:37:55,712 INFO L226 Difference]: Without dead ends: 822 [2020-11-28 07:37:55,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-11-28 07:37:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-11-28 07:37:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 586. [2020-11-28 07:37:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-11-28 07:37:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1362 transitions. [2020-11-28 07:37:55,736 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1362 transitions. Word has length 24 [2020-11-28 07:37:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:55,738 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1362 transitions. [2020-11-28 07:37:55,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:37:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1362 transitions. [2020-11-28 07:37:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:37:55,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,740 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 07:37:55,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:55,962 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 07:37:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,962 INFO L82 PathProgramCache]: Analyzing trace with hash 979237801, now seen corresponding path program 1 times [2020-11-28 07:37:55,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856046560] [2020-11-28 07:37:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:56,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:56,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:56,119 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:37:56,119 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:37:56,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:37:56,120 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:37:56,121 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-28 07:37:56,130 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [623] [623] L994-->L958: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-1302620447 4294967296))) (and (= .cse0 |t1Thread1of1ForFork0_push_#in~x_Out-1302620447|) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-1302620447| |~#arr~0.base_In-1302620447|) (= |~#arr~0.offset_In-1302620447| |t1Thread1of1ForFork0_push_#in~stack.offset_Out-1302620447|) (< .cse0 400) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1302620447| 1) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1302620447 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1302620447|))) InVars {~#arr~0.offset=|~#arr~0.offset_In-1302620447|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-1302620447, ~#arr~0.base=|~#arr~0.base_In-1302620447|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-1302620447|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-1302620447|, t1Thread1of1ForFork0_push_#t~nondet36=|t1Thread1of1ForFork0_push_#t~nondet36_Out-1302620447|, t1Thread1of1ForFork0_push_~stack.offset=t1Thread1of1ForFork0_push_~stack.offset_Out-1302620447, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-1302620447|, t1Thread1of1ForFork0_push_#t~ret38=|t1Thread1of1ForFork0_push_#t~ret38_Out-1302620447|, t1Thread1of1ForFork0_push_~stack.base=t1Thread1of1ForFork0_push_~stack.base_Out-1302620447, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1302620447, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-1302620447|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-1302620447, t1Thread1of1ForFork0_push_~x=t1Thread1of1ForFork0_push_~x_Out-1302620447, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1302620447|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-1302620447|, ~#arr~0.base=|~#arr~0.base_In-1302620447|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_push_~stack.base, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_push_~x, t1Thread1of1ForFork0_push_#t~nondet36, t1Thread1of1ForFork0_push_~stack.offset, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset, t1Thread1of1ForFork0_push_#t~ret38] because there is no mapped edge [2020-11-28 07:37:56,142 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [641] [641] L1010-3-->L1005-6: Formula: (and (<= 0 (+ |t2Thread1of1ForFork1_#t~ret50_In-1214784405| 2147483648)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1214784405| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1214784405|) (= (store |#pthreadsMutex_In-1214784405| |~#m~0.base_In-1214784405| (store (select |#pthreadsMutex_In-1214784405| |~#m~0.base_In-1214784405|) |~#m~0.offset_In-1214784405| 0)) |#pthreadsMutex_Out-1214784405|) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In-1214784405|)) (<= |t2Thread1of1ForFork1_#t~ret50_In-1214784405| 2147483647) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1214784405| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1214784405|) (= (+ t2Thread1of1ForFork1_~i~1_In-1214784405 1) t2Thread1of1ForFork1_~i~1_Out-1214784405)) InVars {#pthreadsMutex=|#pthreadsMutex_In-1214784405|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1214784405|, ~#m~0.base=|~#m~0.base_In-1214784405|, ~#m~0.offset=|~#m~0.offset_In-1214784405|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In-1214784405|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In-1214784405, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1214784405|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out-1214784405|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1214784405|, ~#m~0.base=|~#m~0.base_In-1214784405|, ~#m~0.offset=|~#m~0.offset_In-1214784405|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out-1214784405|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out-1214784405|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out-1214784405, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1214784405|} 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 07:37:56,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:56 BasicIcfg [2020-11-28 07:37:56,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:56,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:56,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:56,220 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:56,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:45" (3/4) ... [2020-11-28 07:37:56,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:37:56,229 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [623] [623] L994-->L958: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-1302620447 4294967296))) (and (= .cse0 |t1Thread1of1ForFork0_push_#in~x_Out-1302620447|) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-1302620447| |~#arr~0.base_In-1302620447|) (= |~#arr~0.offset_In-1302620447| |t1Thread1of1ForFork0_push_#in~stack.offset_Out-1302620447|) (< .cse0 400) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1302620447| 1) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1302620447 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1302620447|))) InVars {~#arr~0.offset=|~#arr~0.offset_In-1302620447|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-1302620447, ~#arr~0.base=|~#arr~0.base_In-1302620447|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-1302620447|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-1302620447|, t1Thread1of1ForFork0_push_#t~nondet36=|t1Thread1of1ForFork0_push_#t~nondet36_Out-1302620447|, t1Thread1of1ForFork0_push_~stack.offset=t1Thread1of1ForFork0_push_~stack.offset_Out-1302620447, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-1302620447|, t1Thread1of1ForFork0_push_#t~ret38=|t1Thread1of1ForFork0_push_#t~ret38_Out-1302620447|, t1Thread1of1ForFork0_push_~stack.base=t1Thread1of1ForFork0_push_~stack.base_Out-1302620447, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-1302620447, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-1302620447|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-1302620447, t1Thread1of1ForFork0_push_~x=t1Thread1of1ForFork0_push_~x_Out-1302620447, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-1302620447|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-1302620447|, ~#arr~0.base=|~#arr~0.base_In-1302620447|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_push_~stack.base, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_push_~x, t1Thread1of1ForFork0_push_#t~nondet36, t1Thread1of1ForFork0_push_~stack.offset, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset, t1Thread1of1ForFork0_push_#t~ret38] because there is no mapped edge [2020-11-28 07:37:56,240 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [641] [641] L1010-3-->L1005-6: Formula: (and (<= 0 (+ |t2Thread1of1ForFork1_#t~ret50_In-1214784405| 2147483648)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1214784405| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1214784405|) (= (store |#pthreadsMutex_In-1214784405| |~#m~0.base_In-1214784405| (store (select |#pthreadsMutex_In-1214784405| |~#m~0.base_In-1214784405|) |~#m~0.offset_In-1214784405| 0)) |#pthreadsMutex_Out-1214784405|) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In-1214784405|)) (<= |t2Thread1of1ForFork1_#t~ret50_In-1214784405| 2147483647) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1214784405| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1214784405|) (= (+ t2Thread1of1ForFork1_~i~1_In-1214784405 1) t2Thread1of1ForFork1_~i~1_Out-1214784405)) InVars {#pthreadsMutex=|#pthreadsMutex_In-1214784405|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In-1214784405|, ~#m~0.base=|~#m~0.base_In-1214784405|, ~#m~0.offset=|~#m~0.offset_In-1214784405|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In-1214784405|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In-1214784405, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In-1214784405|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out-1214784405|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out-1214784405|, ~#m~0.base=|~#m~0.base_In-1214784405|, ~#m~0.offset=|~#m~0.offset_In-1214784405|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out-1214784405|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out-1214784405|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out-1214784405, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out-1214784405|} 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 07:37:56,317 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ef9e9172-dd91-4e88-b137-02f6e8f80d6a/bin/utaipan/witness.graphml [2020-11-28 07:37:56,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:56,324 INFO L168 Benchmark]: Toolchain (without parser) took 12556.17 ms. Allocated memory was 90.2 MB in the beginning and 211.8 MB in the end (delta: 121.6 MB). Free memory was 56.9 MB in the beginning and 128.9 MB in the end (delta: -72.0 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:56,325 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 58.9 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:56,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 920.43 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 56.7 MB in the beginning and 91.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:56,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.06 ms. Allocated memory is still 119.5 MB. Free memory was 91.1 MB in the beginning and 88.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:56,326 INFO L168 Benchmark]: Boogie Preprocessor took 51.44 ms. Allocated memory is still 119.5 MB. Free memory was 88.4 MB in the beginning and 87.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:56,327 INFO L168 Benchmark]: RCFGBuilder took 695.18 ms. Allocated memory is still 119.5 MB. Free memory was 87.0 MB in the beginning and 54.1 MB in the end (delta: 32.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:56,327 INFO L168 Benchmark]: TraceAbstraction took 10672.03 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 53.4 MB in the beginning and 139.4 MB in the end (delta: -86.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:56,328 INFO L168 Benchmark]: Witness Printer took 97.26 ms. Allocated memory is still 211.8 MB. Free memory was 139.4 MB in the beginning and 128.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:56,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 58.9 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 920.43 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 56.7 MB in the beginning and 91.1 MB in the end (delta: -34.4 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.06 ms. Allocated memory is still 119.5 MB. Free memory was 91.1 MB in the beginning and 88.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.44 ms. Allocated memory is still 119.5 MB. Free memory was 88.4 MB in the beginning and 87.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 695.18 ms. Allocated memory is still 119.5 MB. Free memory was 87.0 MB in the beginning and 54.1 MB in the end (delta: 32.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10672.03 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 53.4 MB in the beginning and 139.4 MB in the end (delta: -86.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 97.26 ms. Allocated memory is still 211.8 MB. Free memory was 139.4 MB in the beginning and 128.9 MB in the end (delta: 10.5 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 5451 VarBasedMoverChecksPositive, 106 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 64 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 289 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.5s, 152 PlacesBefore, 40 PlacesAfterwards, 159 TransitionsBefore, 41 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 94 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 6 ChoiceCompositions, 154 TotalNumberOfCompositions, 12656 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[(400)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1019] 0 pthread_t id1, id2; [L1021] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L988] 1 int i; [L989] 1 unsigned int tmp; [L990] 1 i=0 VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L990] COND TRUE 1 i<(400) [L993] 1 tmp = __VERIFIER_nondet_uint() [L960] COND FALSE 1 !(top==(400)) [L952] 1 return top; [L967] 1 stack[get_top()] = x VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L1004] 2 int i; [L1005] 2 i=0 VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L944] 1 top++ [L970] 1 return 0; [L995] COND FALSE 1 !(push(arr,tmp)==(-1)) [L997] 1 flag=(1) VAL [arr={11:0}, flag=1, m={6:0}, top=1] [L990] 1 i++ VAL [arr={11:0}, flag=1, m={6:0}, top=1] [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L952] 2 return top; VAL [arr={11:0}, flag=1, m={6:0}, top=1] [L974] COND FALSE 2 !(get_top()==0) [L948] 2 top-- VAL [arr={11:0}, flag=1, m={6:0}, top=0] [L952] 2 return top; [L982] EXPR 2 stack[get_top()] [L982] 2 return stack[get_top()]; [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L952] 2 return top; [L974] COND TRUE 2 get_top()==0 [L977] 2 return (-2); [L1010] COND TRUE 2 !(pop(arr)!=(-2)) [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack_longer-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={11:0}, flag=1, m={6:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.3s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 406 SDtfs, 599 SDslu, 1028 SDs, 0 SdLazy, 499 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s 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, 9 MinimizatonAttempts, 1397 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 30174 SizeOfPredicates, 5 NumberOfNonLiveVariables, 372 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 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...