./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bad9cc2e90a70823ddce7e56d5b422bec700ab42 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:58:10,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:58:10,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:58:10,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:58:10,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:58:10,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:58:10,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:58:10,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:58:11,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:58:11,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:58:11,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:58:11,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:58:11,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:58:11,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:58:11,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:58:11,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:58:11,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:58:11,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:58:11,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:58:11,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:58:11,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:58:11,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:58:11,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:58:11,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:58:11,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:58:11,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:58:11,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:58:11,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:58:11,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:58:11,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:58:11,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:58:11,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:58:11,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:58:11,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:58:11,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:58:11,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:58:11,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:58:11,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:58:11,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:58:11,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:58:11,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:58:11,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:58:11,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:58:11,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:58:11,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:58:11,121 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:58:11,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:58:11,122 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:58:11,122 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:58:11,122 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:58:11,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:58:11,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:58:11,123 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:58:11,123 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:58:11,123 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:58:11,124 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:58:11,124 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:58:11,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:58:11,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:58:11,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:58:11,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:58:11,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:58:11,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:58:11,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:58:11,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:58:11,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:58:11,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:58:11,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:58:11,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:58:11,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:58:11,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:58:11,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:58:11,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:58:11,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:11,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:58:11,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:58:11,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:58:11,129 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:58:11,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:58:11,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:58:11,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:58:11,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:58:11,131 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_56d684d4-aaea-4a5c-a168-725058ca1a74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad9cc2e90a70823ddce7e56d5b422bec700ab42 [2020-11-30 01:58:11,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:58:11,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:58:11,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:58:11,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:58:11,408 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:58:11,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/../../sv-benchmarks/c/pthread/stack_longest-1.i [2020-11-30 01:58:11,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/data/05f571fd8/92702e93499f42adb7e7e44db426bfb1/FLAGc17a0cf5a [2020-11-30 01:58:12,143 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:58:12,144 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/sv-benchmarks/c/pthread/stack_longest-1.i [2020-11-30 01:58:12,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/data/05f571fd8/92702e93499f42adb7e7e44db426bfb1/FLAGc17a0cf5a [2020-11-30 01:58:12,405 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/data/05f571fd8/92702e93499f42adb7e7e44db426bfb1 [2020-11-30 01:58:12,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:58:12,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:58:12,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:12,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:58:12,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:58:12,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:12" (1/1) ... [2020-11-30 01:58:12,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33587af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:12, skipping insertion in model container [2020-11-30 01:58:12,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:12" (1/1) ... [2020-11-30 01:58:12,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:58:12,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:58:12,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:13,016 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:58:13,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:13,291 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:58:13,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13 WrapperNode [2020-11-30 01:58:13,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:13,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:13,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:58:13,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:58:13,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:13,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:58:13,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:58:13,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:58:13,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... [2020-11-30 01:58:13,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:58:13,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:58:13,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:58:13,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:58:13,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/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 [2020-11-30 01:58:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-30 01:58:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-30 01:58:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-30 01:58:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-30 01:58:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:58:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:58:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:58:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:58:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-30 01:58:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:58:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:58:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:58:13,541 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 01:58:14,170 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:58:14,171 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-11-30 01:58:14,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:14 BoogieIcfgContainer [2020-11-30 01:58:14,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:58:14,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:58:14,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:58:14,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:58:14,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:58:12" (1/3) ... [2020-11-30 01:58:14,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21867f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:14, skipping insertion in model container [2020-11-30 01:58:14,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:13" (2/3) ... [2020-11-30 01:58:14,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21867f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:14, skipping insertion in model container [2020-11-30 01:58:14,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:14" (3/3) ... [2020-11-30 01:58:14,182 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2020-11-30 01:58:14,191 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 01:58:14,191 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:58:14,194 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:58:14,195 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 01:58:14,239 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,240 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,241 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,241 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,243 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,243 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,243 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,245 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,245 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,246 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,246 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,246 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,246 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,247 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,247 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,247 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,247 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,248 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,248 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,249 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,249 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,250 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,250 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,250 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,250 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,251 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,251 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,251 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,251 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,251 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,252 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,252 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,252 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,252 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,253 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,253 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,253 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,253 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,253 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,254 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,254 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,254 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,255 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,255 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,255 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,255 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,255 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,256 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,256 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,256 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,256 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,257 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,257 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,257 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,257 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,257 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,258 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,258 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,258 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,258 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,258 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,258 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,259 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,259 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,259 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,260 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,260 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,260 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,260 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,261 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,261 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,261 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,261 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,261 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,263 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,263 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,263 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,263 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,263 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,263 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,263 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,264 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,264 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,264 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,264 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,264 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,264 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,264 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,265 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,265 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,265 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,265 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,265 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,265 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,265 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,266 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,266 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,266 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,266 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,266 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,267 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,267 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,267 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,267 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,267 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,267 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,267 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,268 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,268 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,268 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,268 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,268 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,269 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,269 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,269 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,269 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,269 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,269 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,270 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,270 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,270 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,270 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,270 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,271 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,271 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,271 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,271 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,271 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,271 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,273 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,274 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,274 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,274 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,274 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,274 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,275 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,275 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,275 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,275 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,275 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,275 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,276 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,276 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,276 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,276 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,276 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,276 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,277 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,277 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,277 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,277 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,277 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,278 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,278 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,282 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,282 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,283 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,283 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,283 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,283 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,285 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,285 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,285 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,285 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,285 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,285 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,286 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 01:58:14,296 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-30 01:58:14,306 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:58:14,335 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:58:14,335 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:58:14,335 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:58:14,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:58:14,335 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:58:14,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:58:14,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:58:14,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:58:14,349 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 01:58:14,351 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-30 01:58:14,353 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-30 01:58:14,355 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 340 flow [2020-11-30 01:58:14,438 INFO L129 PetriNetUnfolder]: 13/159 cut-off events. [2020-11-30 01:58:14,439 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-30 01:58:14,450 INFO L80 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 159 events. 13/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 449 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 123. Up to 3 conditions per place. [2020-11-30 01:58:14,460 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-11-30 01:58:17,226 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-11-30 01:58:18,099 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-30 01:58:18,621 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-11-30 01:58:18,749 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-30 01:58:19,665 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 135 [2020-11-30 01:58:20,030 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-30 01:58:20,248 INFO L131 LiptonReduction]: Checked pairs total: 11922 [2020-11-30 01:58:20,248 INFO L133 LiptonReduction]: Total number of compositions: 153 [2020-11-30 01:58:20,255 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-11-30 01:58:20,282 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-11-30 01:58:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-11-30 01:58:20,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:58:20,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:20,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:58:20,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:20,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1856423894, now seen corresponding path program 1 times [2020-11-30 01:58:20,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:20,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754665014] [2020-11-30 01:58:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:20,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754665014] [2020-11-30 01:58:20,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:20,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:20,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978854032] [2020-11-30 01:58:20,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:20,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:20,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:20,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:20,605 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-11-30 01:58:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:20,746 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-11-30 01:58:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:20,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 01:58:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:20,781 INFO L225 Difference]: With dead ends: 602 [2020-11-30 01:58:20,783 INFO L226 Difference]: Without dead ends: 580 [2020-11-30 01:58:20,788 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 [2020-11-30 01:58:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-11-30 01:58:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-11-30 01:58:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-30 01:58:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-11-30 01:58:20,894 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-11-30 01:58:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:20,895 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-11-30 01:58:20,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-11-30 01:58:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:58:20,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:20,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:20,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:58:20,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1263754107, now seen corresponding path program 1 times [2020-11-30 01:58:20,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:20,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486826664] [2020-11-30 01:58:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:21,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486826664] [2020-11-30 01:58:21,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:21,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:21,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149992506] [2020-11-30 01:58:21,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:21,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:21,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:21,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:21,026 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-11-30 01:58:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:21,050 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-11-30 01:58:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:21,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 01:58:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:21,056 INFO L225 Difference]: With dead ends: 530 [2020-11-30 01:58:21,058 INFO L226 Difference]: Without dead ends: 508 [2020-11-30 01:58:21,059 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 [2020-11-30 01:58:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-30 01:58:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-11-30 01:58:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-30 01:58:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-11-30 01:58:21,123 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-11-30 01:58:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:21,124 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-11-30 01:58:21,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-11-30 01:58:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:58:21,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:21,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:21,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:58:21,127 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:21,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1433094520, now seen corresponding path program 1 times [2020-11-30 01:58:21,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:21,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334202618] [2020-11-30 01:58:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:21,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334202618] [2020-11-30 01:58:21,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:21,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543608658] [2020-11-30 01:58:21,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:21,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:21,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:21,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:21,207 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-11-30 01:58:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:21,230 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-11-30 01:58:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:21,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 01:58:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:21,235 INFO L225 Difference]: With dead ends: 504 [2020-11-30 01:58:21,235 INFO L226 Difference]: Without dead ends: 504 [2020-11-30 01:58:21,236 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 [2020-11-30 01:58:21,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-30 01:58:21,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-30 01:58:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-30 01:58:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-11-30 01:58:21,260 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-11-30 01:58:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:21,260 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-11-30 01:58:21,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-11-30 01:58:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:58:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:21,262 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:21,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:58:21,263 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1251716059, now seen corresponding path program 1 times [2020-11-30 01:58:21,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:21,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820627254] [2020-11-30 01:58:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:21,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820627254] [2020-11-30 01:58:21,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418052914] [2020-11-30 01:58:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/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 [2020-11-30 01:58:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:21,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:58:21,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:58:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:21,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:58:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:21,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [249185206] [2020-11-30 01:58:21,766 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) [2020-11-30 01:58:21,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 01:58:21,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2020-11-30 01:58:21,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114643548] [2020-11-30 01:58:21,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:58:21,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:21,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:58:21,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:58:21,771 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 10 states. [2020-11-30 01:58:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:22,061 INFO L93 Difference]: Finished difference Result 1250 states and 3210 transitions. [2020-11-30 01:58:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:58:22,062 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-30 01:58:22,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:22,072 INFO L225 Difference]: With dead ends: 1250 [2020-11-30 01:58:22,072 INFO L226 Difference]: Without dead ends: 1250 [2020-11-30 01:58:22,073 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 [2020-11-30 01:58:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-11-30 01:58:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 904. [2020-11-30 01:58:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-11-30 01:58:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2416 transitions. [2020-11-30 01:58:22,113 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2416 transitions. Word has length 14 [2020-11-30 01:58:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:22,114 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 2416 transitions. [2020-11-30 01:58:22,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:58:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2416 transitions. [2020-11-30 01:58:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:58:22,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:22,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:22,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:58:22,337 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:22,337 INFO L82 PathProgramCache]: Analyzing trace with hash -947618172, now seen corresponding path program 1 times [2020-11-30 01:58:22,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:22,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696862103] [2020-11-30 01:58:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:22,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696862103] [2020-11-30 01:58:22,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:22,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:58:22,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970565364] [2020-11-30 01:58:22,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:22,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:22,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:22,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:22,434 INFO L87 Difference]: Start difference. First operand 904 states and 2416 transitions. Second operand 3 states. [2020-11-30 01:58:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:22,468 INFO L93 Difference]: Finished difference Result 439 states and 991 transitions. [2020-11-30 01:58:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:22,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 01:58:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:22,473 INFO L225 Difference]: With dead ends: 439 [2020-11-30 01:58:22,473 INFO L226 Difference]: Without dead ends: 435 [2020-11-30 01:58:22,474 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 [2020-11-30 01:58:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-11-30 01:58:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 403. [2020-11-30 01:58:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-30 01:58:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 899 transitions. [2020-11-30 01:58:22,488 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 899 transitions. Word has length 16 [2020-11-30 01:58:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:22,489 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 899 transitions. [2020-11-30 01:58:22,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 899 transitions. [2020-11-30 01:58:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:58:22,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:22,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:22,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:58:22,491 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:22,492 INFO L82 PathProgramCache]: Analyzing trace with hash 690121372, now seen corresponding path program 1 times [2020-11-30 01:58:22,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:22,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715462473] [2020-11-30 01:58:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:22,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715462473] [2020-11-30 01:58:22,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:22,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:58:22,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886931958] [2020-11-30 01:58:22,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:58:22,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:58:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:58:22,592 INFO L87 Difference]: Start difference. First operand 403 states and 899 transitions. Second operand 5 states. [2020-11-30 01:58:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:22,681 INFO L93 Difference]: Finished difference Result 563 states and 1255 transitions. [2020-11-30 01:58:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:58:22,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 01:58:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:22,686 INFO L225 Difference]: With dead ends: 563 [2020-11-30 01:58:22,686 INFO L226 Difference]: Without dead ends: 563 [2020-11-30 01:58:22,687 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 [2020-11-30 01:58:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-30 01:58:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 441. [2020-11-30 01:58:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-11-30 01:58:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 990 transitions. [2020-11-30 01:58:22,707 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 990 transitions. Word has length 17 [2020-11-30 01:58:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:22,708 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 990 transitions. [2020-11-30 01:58:22,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:58:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 990 transitions. [2020-11-30 01:58:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:58:22,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:22,710 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] [2020-11-30 01:58:22,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:58:22,710 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:22,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1892561304, now seen corresponding path program 1 times [2020-11-30 01:58:22,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:22,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385913065] [2020-11-30 01:58:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:23,387 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 20 [2020-11-30 01:58:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:23,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385913065] [2020-11-30 01:58:23,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:23,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:58:23,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627657753] [2020-11-30 01:58:23,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:58:23,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:23,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:58:23,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:58:23,534 INFO L87 Difference]: Start difference. First operand 441 states and 990 transitions. Second operand 8 states. [2020-11-30 01:58:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:23,993 INFO L93 Difference]: Finished difference Result 761 states and 1691 transitions. [2020-11-30 01:58:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:58:23,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-30 01:58:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:23,999 INFO L225 Difference]: With dead ends: 761 [2020-11-30 01:58:23,999 INFO L226 Difference]: Without dead ends: 761 [2020-11-30 01:58:23,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:58:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-11-30 01:58:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 578. [2020-11-30 01:58:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-11-30 01:58:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1337 transitions. [2020-11-30 01:58:24,021 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1337 transitions. Word has length 21 [2020-11-30 01:58:24,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:24,021 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1337 transitions. [2020-11-30 01:58:24,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:58:24,021 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1337 transitions. [2020-11-30 01:58:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:58:24,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:24,023 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] [2020-11-30 01:58:24,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:58:24,023 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash 158059450, now seen corresponding path program 2 times [2020-11-30 01:58:24,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:24,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612523715] [2020-11-30 01:58:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:24,726 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-11-30 01:58:24,923 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-11-30 01:58:25,120 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2020-11-30 01:58:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:25,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612523715] [2020-11-30 01:58:25,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:25,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:58:25,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870481653] [2020-11-30 01:58:25,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:58:25,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:25,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:58:25,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:58:25,202 INFO L87 Difference]: Start difference. First operand 578 states and 1337 transitions. Second operand 8 states. [2020-11-30 01:58:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:25,736 INFO L93 Difference]: Finished difference Result 878 states and 1996 transitions. [2020-11-30 01:58:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:58:25,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-30 01:58:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:25,744 INFO L225 Difference]: With dead ends: 878 [2020-11-30 01:58:25,744 INFO L226 Difference]: Without dead ends: 878 [2020-11-30 01:58:25,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:58:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-11-30 01:58:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 579. [2020-11-30 01:58:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-11-30 01:58:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1338 transitions. [2020-11-30 01:58:25,768 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1338 transitions. Word has length 21 [2020-11-30 01:58:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:25,768 INFO L481 AbstractCegarLoop]: Abstraction has 579 states and 1338 transitions. [2020-11-30 01:58:25,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:58:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1338 transitions. [2020-11-30 01:58:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:58:25,770 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:25,770 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] [2020-11-30 01:58:25,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:58:25,770 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:25,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash 458343232, now seen corresponding path program 3 times [2020-11-30 01:58:25,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:25,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346249397] [2020-11-30 01:58:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:26,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346249397] [2020-11-30 01:58:26,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:26,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:58:26,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011116494] [2020-11-30 01:58:26,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:58:26,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:26,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:58:26,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:58:26,403 INFO L87 Difference]: Start difference. First operand 579 states and 1338 transitions. Second operand 8 states. [2020-11-30 01:58:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:26,858 INFO L93 Difference]: Finished difference Result 1007 states and 2318 transitions. [2020-11-30 01:58:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:58:26,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-30 01:58:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:26,866 INFO L225 Difference]: With dead ends: 1007 [2020-11-30 01:58:26,866 INFO L226 Difference]: Without dead ends: 1007 [2020-11-30 01:58:26,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:58:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-11-30 01:58:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 560. [2020-11-30 01:58:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-11-30 01:58:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1291 transitions. [2020-11-30 01:58:26,891 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1291 transitions. Word has length 21 [2020-11-30 01:58:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:26,893 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1291 transitions. [2020-11-30 01:58:26,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:58:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1291 transitions. [2020-11-30 01:58:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:58:26,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:26,894 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] [2020-11-30 01:58:26,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:58:26,895 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:26,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:26,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1256686503, now seen corresponding path program 1 times [2020-11-30 01:58:26,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:26,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895270820] [2020-11-30 01:58:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:26,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895270820] [2020-11-30 01:58:26,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454316302] [2020-11-30 01:58:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/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 [2020-11-30 01:58:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:27,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:58:27,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:58:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:58:27,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:58:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:58:27,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:58:27,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2020-11-30 01:58:27,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077424977] [2020-11-30 01:58:27,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:58:27,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:27,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:58:27,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:58:27,203 INFO L87 Difference]: Start difference. First operand 560 states and 1291 transitions. Second operand 10 states. [2020-11-30 01:58:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:27,393 INFO L93 Difference]: Finished difference Result 822 states and 1855 transitions. [2020-11-30 01:58:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:58:27,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-11-30 01:58:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:27,399 INFO L225 Difference]: With dead ends: 822 [2020-11-30 01:58:27,399 INFO L226 Difference]: Without dead ends: 822 [2020-11-30 01:58:27,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:58:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-11-30 01:58:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 586. [2020-11-30 01:58:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-11-30 01:58:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1362 transitions. [2020-11-30 01:58:27,423 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1362 transitions. Word has length 24 [2020-11-30 01:58:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:27,424 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1362 transitions. [2020-11-30 01:58:27,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:58:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1362 transitions. [2020-11-30 01:58:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:58:27,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:27,425 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:27,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 01:58:27,642 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:58:27,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:27,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1256691651, now seen corresponding path program 1 times [2020-11-30 01:58:27,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:27,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782284035] [2020-11-30 01:58:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:27,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:27,724 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:27,767 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:58:27,767 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:58:27,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 01:58:27,768 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-30 01:58:27,769 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-30 01:58:27,769 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-30 01:58:27,778 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [636] [636] L994-1-->L996-1: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-497176978 4294967296))) (and (= |t1Thread1of1ForFork0_push_#in~x_Out-497176978| .cse0) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out-497176978| |~#arr~0.offset_In-497176978|) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-497176978 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-497176978|) (< .cse0 800) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-497176978| |~#arr~0.base_In-497176978|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-497176978| 1))) InVars {~#arr~0.offset=|~#arr~0.offset_In-497176978|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-497176978, ~#arr~0.base=|~#arr~0.base_In-497176978|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-497176978|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-497176978|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-497176978, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-497176978|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-497176978, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out-497176978|, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-497176978|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-497176978|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-497176978|, ~#arr~0.base=|~#arr~0.base_In-497176978|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-11-30 01:58:27,787 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [635] [635] L996-2-->L999: Formula: (and (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1257621930| |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1257621930|) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1257621930| |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1257621930|) (<= |t1Thread1of1ForFork0_#t~ret47_In1257621930| 2147483647) (not (= (- 1) |t1Thread1of1ForFork0_#t~ret47_In1257621930|)) (<= 0 (+ |t1Thread1of1ForFork0_#t~ret47_In1257621930| 2147483648)) (= ~flag~0_Out1257621930 1)) InVars {t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_In1257621930|, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1257621930|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1257621930|} OutVars{t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_Out1257621930|, ~flag~0=~flag~0_Out1257621930, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1257621930|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1257621930|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret47, ~flag~0, t1Thread1of1ForFork0_reach_error_#t~nondet2.base, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-30 01:58:27,794 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L1011-4-->L1006-6: Formula: (and (= |#pthreadsMutex_Out950284150| (store |#pthreadsMutex_In950284150| |~#m~0.base_In950284150| (store (select |#pthreadsMutex_In950284150| |~#m~0.base_In950284150|) |~#m~0.offset_In950284150| 0))) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In950284150|)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In950284150| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out950284150|) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In950284150| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out950284150|) (= (+ t2Thread1of1ForFork1_~i~1_In950284150 1) t2Thread1of1ForFork1_~i~1_Out950284150)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In950284150|, #pthreadsMutex=|#pthreadsMutex_In950284150|, ~#m~0.base=|~#m~0.base_In950284150|, ~#m~0.offset=|~#m~0.offset_In950284150|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In950284150|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In950284150, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In950284150|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out950284150|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out950284150|, ~#m~0.base=|~#m~0.base_In950284150|, ~#m~0.offset=|~#m~0.offset_In950284150|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out950284150|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out950284150|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out950284150, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out950284150|} 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 [2020-11-30 01:58:27,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:58:27 BasicIcfg [2020-11-30 01:58:27,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:58:27,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:58:27,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:58:27,857 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:58:27,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:14" (3/4) ... [2020-11-30 01:58:27,859 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:58:27,861 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [636] [636] L994-1-->L996-1: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-497176978 4294967296))) (and (= |t1Thread1of1ForFork0_push_#in~x_Out-497176978| .cse0) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out-497176978| |~#arr~0.offset_In-497176978|) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-497176978 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-497176978|) (< .cse0 800) (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-497176978| |~#arr~0.base_In-497176978|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-497176978| 1))) InVars {~#arr~0.offset=|~#arr~0.offset_In-497176978|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-497176978, ~#arr~0.base=|~#arr~0.base_In-497176978|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-497176978|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-497176978|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-497176978, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-497176978|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-497176978, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out-497176978|, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-497176978|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-497176978|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-497176978|, ~#arr~0.base=|~#arr~0.base_In-497176978|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-11-30 01:58:27,867 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [635] [635] L996-2-->L999: Formula: (and (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1257621930| |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1257621930|) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1257621930| |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1257621930|) (<= |t1Thread1of1ForFork0_#t~ret47_In1257621930| 2147483647) (not (= (- 1) |t1Thread1of1ForFork0_#t~ret47_In1257621930|)) (<= 0 (+ |t1Thread1of1ForFork0_#t~ret47_In1257621930| 2147483648)) (= ~flag~0_Out1257621930 1)) InVars {t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_In1257621930|, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1257621930|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1257621930|} OutVars{t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_Out1257621930|, ~flag~0=~flag~0_Out1257621930, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1257621930|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1257621930|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret47, ~flag~0, t1Thread1of1ForFork0_reach_error_#t~nondet2.base, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-30 01:58:27,874 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L1011-4-->L1006-6: Formula: (and (= |#pthreadsMutex_Out950284150| (store |#pthreadsMutex_In950284150| |~#m~0.base_In950284150| (store (select |#pthreadsMutex_In950284150| |~#m~0.base_In950284150|) |~#m~0.offset_In950284150| 0))) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In950284150|)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In950284150| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out950284150|) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In950284150| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out950284150|) (= (+ t2Thread1of1ForFork1_~i~1_In950284150 1) t2Thread1of1ForFork1_~i~1_Out950284150)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In950284150|, #pthreadsMutex=|#pthreadsMutex_In950284150|, ~#m~0.base=|~#m~0.base_In950284150|, ~#m~0.offset=|~#m~0.offset_In950284150|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In950284150|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In950284150, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In950284150|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out950284150|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out950284150|, ~#m~0.base=|~#m~0.base_In950284150|, ~#m~0.offset=|~#m~0.offset_In950284150|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out950284150|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out950284150|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out950284150, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out950284150|} 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 [2020-11-30 01:58:27,945 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_56d684d4-aaea-4a5c-a168-725058ca1a74/bin/utaipan/witness.graphml [2020-11-30 01:58:27,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:58:27,946 INFO L168 Benchmark]: Toolchain (without parser) took 15536.81 ms. Allocated memory was 92.3 MB in the beginning and 228.6 MB in the end (delta: 136.3 MB). Free memory was 61.3 MB in the beginning and 127.2 MB in the end (delta: -65.9 MB). Peak memory consumption was 69.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:27,947 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:27,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.27 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 61.0 MB in the beginning and 70.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:27,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.05 ms. Allocated memory is still 117.4 MB. Free memory was 70.0 MB in the beginning and 67.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:27,948 INFO L168 Benchmark]: Boogie Preprocessor took 69.24 ms. Allocated memory is still 117.4 MB. Free memory was 67.1 MB in the beginning and 65.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:27,948 INFO L168 Benchmark]: RCFGBuilder took 718.00 ms. Allocated memory is still 117.4 MB. Free memory was 65.8 MB in the beginning and 78.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:27,949 INFO L168 Benchmark]: TraceAbstraction took 13680.94 ms. Allocated memory was 117.4 MB in the beginning and 228.6 MB in the end (delta: 111.1 MB). Free memory was 78.9 MB in the beginning and 138.7 MB in the end (delta: -59.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:27,949 INFO L168 Benchmark]: Witness Printer took 89.13 ms. Allocated memory is still 228.6 MB. Free memory was 137.7 MB in the beginning and 127.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:27,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 877.27 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 61.0 MB in the beginning and 70.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.05 ms. Allocated memory is still 117.4 MB. Free memory was 70.0 MB in the beginning and 67.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.24 ms. Allocated memory is still 117.4 MB. Free memory was 67.1 MB in the beginning and 65.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 718.00 ms. Allocated memory is still 117.4 MB. Free memory was 65.8 MB in the beginning and 78.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13680.94 ms. Allocated memory was 117.4 MB in the beginning and 228.6 MB in the end (delta: 111.1 MB). Free memory was 78.9 MB in the beginning and 138.7 MB in the end (delta: -59.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * Witness Printer took 89.13 ms. Allocated memory is still 228.6 MB. Free memory was 137.7 MB in the beginning and 127.2 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 5574 VarBasedMoverChecksPositive, 81 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 302 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.8s, 152 PlacesBefore, 40 PlacesAfterwards, 159 TransitionsBefore, 40 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 11922 MoverChecksTotal - CounterExampleResult [Line: 20]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(800)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1020] 0 pthread_t id1, id2; [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L989] 1 int i; [L990] 1 unsigned int tmp; [L991] 1 i=0 VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L991] COND TRUE 1 i<(800) [L994] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L961] COND FALSE 1 !(top==(800)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L1005] 2 int i; [L1006] 2 i=0 VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L953] 1 return top; [L968] 1 stack[get_top()] = x [L945] 1 top++ [L971] 1 return 0; [L991] 1 i++ VAL [arr={9:0}, flag=1, m={13:0}, top=1] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L953] 2 return top; [L975] COND FALSE 2 !(get_top()==0) [L949] 2 top-- [L953] 2 return top; [L983] EXPR 2 stack[get_top()] [L983] 2 return stack[get_top()]; [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L953] 2 return top; [L975] COND TRUE 2 get_top()==0 [L978] 2 return (-2); [L1011] COND TRUE 2 !(pop(arr)!=(-2)) [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack_longest-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={9:0}, flag=1, m={13:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 458 SDtfs, 663 SDslu, 1202 SDs, 0 SdLazy, 612 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1858 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 82944 SizeOfPredicates, 6 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 10/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...