./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6ab55767df3b26021df0e39ced39f80ee5a9fd9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6ab55767df3b26021df0e39ced39f80ee5a9fd9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-03 07:03:29,998 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 07:03:29,999 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 07:03:30,005 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 07:03:30,005 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 07:03:30,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 07:03:30,006 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 07:03:30,007 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 07:03:30,007 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 07:03:30,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 07:03:30,008 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 07:03:30,008 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 07:03:30,009 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 07:03:30,009 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 07:03:30,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 07:03:30,010 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 07:03:30,010 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 07:03:30,011 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 07:03:30,012 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 07:03:30,013 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 07:03:30,013 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 07:03:30,014 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 07:03:30,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 07:03:30,015 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 07:03:30,015 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 07:03:30,015 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 07:03:30,016 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 07:03:30,016 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 07:03:30,017 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 07:03:30,017 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 07:03:30,017 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 07:03:30,018 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 07:03:30,018 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 07:03:30,018 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 07:03:30,018 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 07:03:30,019 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 07:03:30,019 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 07:03:30,026 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 07:03:30,026 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 07:03:30,026 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 07:03:30,027 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 07:03:30,027 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 07:03:30,028 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 07:03:30,028 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 07:03:30,029 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:03:30,029 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 07:03:30,029 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 07:03:30,030 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 07:03:30,030 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 07:03:30,030 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 07:03:30,030 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/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(__VERIFIER_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 -> a6ab55767df3b26021df0e39ced39f80ee5a9fd9 [2018-12-03 07:03:30,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 07:03:30,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 07:03:30,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 07:03:30,060 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 07:03:30,060 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 07:03:30,061 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_longest_false-unreach-call.i [2018-12-03 07:03:30,099 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/505babf7b/ffa5ff0d888141508e16fd500e794ad8/FLAG56aa3c7d9 [2018-12-03 07:03:30,568 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 07:03:30,568 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/sv-benchmarks/c/pthread/stack_longest_false-unreach-call.i [2018-12-03 07:03:30,576 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/505babf7b/ffa5ff0d888141508e16fd500e794ad8/FLAG56aa3c7d9 [2018-12-03 07:03:30,585 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/505babf7b/ffa5ff0d888141508e16fd500e794ad8 [2018-12-03 07:03:30,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 07:03:30,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 07:03:30,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 07:03:30,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 07:03:30,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 07:03:30,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:03:30" (1/1) ... [2018-12-03 07:03:30,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115e7fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:30, skipping insertion in model container [2018-12-03 07:03:30,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:03:30" (1/1) ... [2018-12-03 07:03:30,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 07:03:30,619 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 07:03:30,871 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:03:30,904 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 07:03:30,931 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:03:31,012 INFO L195 MainTranslator]: Completed translation [2018-12-03 07:03:31,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31 WrapperNode [2018-12-03 07:03:31,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 07:03:31,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 07:03:31,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 07:03:31,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 07:03:31,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 07:03:31,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 07:03:31,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 07:03:31,074 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 07:03:31,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... [2018-12-03 07:03:31,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 07:03:31,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 07:03:31,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 07:03:31,116 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 07:03:31,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/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 [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-03 07:03:31,150 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-03 07:03:31,150 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 07:03:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-03 07:03:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-03 07:03:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 07:03:31,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 07:03:31,152 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-03 07:03:32,036 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 07:03:32,036 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-03 07:03:32,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:03:32 BoogieIcfgContainer [2018-12-03 07:03:32,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 07:03:32,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 07:03:32,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 07:03:32,039 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 07:03:32,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 07:03:30" (1/3) ... [2018-12-03 07:03:32,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d57e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:03:32, skipping insertion in model container [2018-12-03 07:03:32,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:31" (2/3) ... [2018-12-03 07:03:32,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d57e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:03:32, skipping insertion in model container [2018-12-03 07:03:32,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:03:32" (3/3) ... [2018-12-03 07:03:32,042 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest_false-unreach-call.i [2018-12-03 07:03:32,083 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,083 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,083 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,083 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,084 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,084 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,084 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,084 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,084 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,084 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,085 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,086 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,086 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,086 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,086 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,086 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,086 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,086 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,087 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,088 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,089 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,090 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,091 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,091 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,091 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,091 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,091 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,091 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,091 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,092 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,093 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,094 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,094 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,094 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,094 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,094 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,094 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,094 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,095 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,095 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,095 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,095 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,095 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,095 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,095 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,096 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,096 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,096 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,096 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,096 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,096 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,096 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,097 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,097 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,097 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,097 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,097 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,098 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,099 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,099 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,099 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,099 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,099 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,099 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,099 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:32,107 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-03 07:03:32,107 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 07:03:32,113 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-03 07:03:32,123 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-03 07:03:32,139 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 07:03:32,139 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 07:03:32,139 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 07:03:32,140 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 07:03:32,140 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 07:03:32,140 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 07:03:32,140 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 07:03:32,140 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 07:03:32,155 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 930places, 938 transitions [2018-12-03 07:03:32,248 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7305 states. [2018-12-03 07:03:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states. [2018-12-03 07:03:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2018-12-03 07:03:32,283 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:32,284 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:32,285 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:32,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:32,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1895414349, now seen corresponding path program 1 times [2018-12-03 07:03:32,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:03:32,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:32,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:32,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:32,329 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:03:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:33,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:33,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:03:33,059 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:03:33,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:03:33,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:03:33,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:33,073 INFO L87 Difference]: Start difference. First operand 7305 states. Second operand 3 states. [2018-12-03 07:03:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:33,183 INFO L93 Difference]: Finished difference Result 10653 states and 27152 transitions. [2018-12-03 07:03:33,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:03:33,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 845 [2018-12-03 07:03:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:33,221 INFO L225 Difference]: With dead ends: 10653 [2018-12-03 07:03:33,221 INFO L226 Difference]: Without dead ends: 10545 [2018-12-03 07:03:33,222 INFO L631 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 [2018-12-03 07:03:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2018-12-03 07:03:33,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 9075. [2018-12-03 07:03:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9075 states. [2018-12-03 07:03:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 23133 transitions. [2018-12-03 07:03:33,422 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 23133 transitions. Word has length 845 [2018-12-03 07:03:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:33,423 INFO L480 AbstractCegarLoop]: Abstraction has 9075 states and 23133 transitions. [2018-12-03 07:03:33,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:03:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 23133 transitions. [2018-12-03 07:03:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2018-12-03 07:03:33,437 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:33,438 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:33,438 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:33,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash -378822001, now seen corresponding path program 1 times [2018-12-03 07:03:33,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:03:33,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:33,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:33,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:33,440 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:03:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:33,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:33,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:03:33,780 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:03:33,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:03:33,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:03:33,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:33,782 INFO L87 Difference]: Start difference. First operand 9075 states and 23133 transitions. Second operand 3 states. [2018-12-03 07:03:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:33,826 INFO L93 Difference]: Finished difference Result 8496 states and 21268 transitions. [2018-12-03 07:03:33,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:03:33,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 849 [2018-12-03 07:03:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:33,855 INFO L225 Difference]: With dead ends: 8496 [2018-12-03 07:03:33,855 INFO L226 Difference]: Without dead ends: 8355 [2018-12-03 07:03:33,855 INFO L631 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 [2018-12-03 07:03:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8355 states. [2018-12-03 07:03:33,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8355 to 8127. [2018-12-03 07:03:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8127 states. [2018-12-03 07:03:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 20407 transitions. [2018-12-03 07:03:33,965 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 20407 transitions. Word has length 849 [2018-12-03 07:03:33,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:33,967 INFO L480 AbstractCegarLoop]: Abstraction has 8127 states and 20407 transitions. [2018-12-03 07:03:33,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:03:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 20407 transitions. [2018-12-03 07:03:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2018-12-03 07:03:33,972 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:33,972 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:33,972 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:33,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1036263380, now seen corresponding path program 1 times [2018-12-03 07:03:33,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:03:33,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:33,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:33,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:33,974 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:03:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:34,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:34,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:03:34,322 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:03:34,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 07:03:34,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 07:03:34,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 07:03:34,323 INFO L87 Difference]: Start difference. First operand 8127 states and 20407 transitions. Second operand 4 states. [2018-12-03 07:03:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:34,374 INFO L93 Difference]: Finished difference Result 10992 states and 28010 transitions. [2018-12-03 07:03:34,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 07:03:34,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 854 [2018-12-03 07:03:34,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:34,399 INFO L225 Difference]: With dead ends: 10992 [2018-12-03 07:03:34,399 INFO L226 Difference]: Without dead ends: 10992 [2018-12-03 07:03:34,400 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:03:34,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2018-12-03 07:03:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 8451. [2018-12-03 07:03:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8451 states. [2018-12-03 07:03:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8451 states to 8451 states and 21274 transitions. [2018-12-03 07:03:34,517 INFO L78 Accepts]: Start accepts. Automaton has 8451 states and 21274 transitions. Word has length 854 [2018-12-03 07:03:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:34,517 INFO L480 AbstractCegarLoop]: Abstraction has 8451 states and 21274 transitions. [2018-12-03 07:03:34,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 07:03:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8451 states and 21274 transitions. [2018-12-03 07:03:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2018-12-03 07:03:34,524 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:34,524 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:34,524 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:34,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1633986756, now seen corresponding path program 1 times [2018-12-03 07:03:34,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:03:34,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:34,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:34,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:03:34,526 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:03:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:35,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:03:35,048 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:03:35,049 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-03 07:03:35,051 INFO L168 Benchmark]: Toolchain (without parser) took 4463.90 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.1 GB). Free memory was 948.1 MB in the beginning and 1.5 GB in the end (delta: -514.6 MB). Peak memory consumption was 946.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:35,052 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:03:35,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -118.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:35,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:35,053 INFO L168 Benchmark]: Boogie Preprocessor took 41.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:35,054 INFO L168 Benchmark]: RCFGBuilder took 921.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.1 MB in the end (delta: 159.7 MB). Peak memory consumption was 159.7 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:35,054 INFO L168 Benchmark]: TraceAbstraction took 3013.02 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 891.1 MB in the beginning and 1.5 GB in the end (delta: -571.6 MB). Peak memory consumption was 767.9 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:35,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 424.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -118.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 921.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.1 MB in the end (delta: 159.7 MB). Peak memory consumption was 159.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3013.02 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 891.1 MB in the beginning and 1.5 GB in the end (delta: -571.6 MB). Peak memory consumption was 767.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-03 07:03:36,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 07:03:36,362 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 07:03:36,368 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 07:03:36,368 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 07:03:36,369 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 07:03:36,369 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 07:03:36,370 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 07:03:36,371 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 07:03:36,371 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 07:03:36,372 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 07:03:36,372 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 07:03:36,372 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 07:03:36,372 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 07:03:36,373 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 07:03:36,373 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 07:03:36,374 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 07:03:36,375 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 07:03:36,375 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 07:03:36,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 07:03:36,377 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 07:03:36,378 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 07:03:36,379 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 07:03:36,379 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 07:03:36,379 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 07:03:36,380 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 07:03:36,380 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 07:03:36,381 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 07:03:36,381 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 07:03:36,382 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 07:03:36,382 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 07:03:36,382 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 07:03:36,382 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 07:03:36,382 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 07:03:36,383 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 07:03:36,383 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 07:03:36,383 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-03 07:03:36,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 07:03:36,393 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 07:03:36,393 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 07:03:36,393 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 07:03:36,394 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 07:03:36,394 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 07:03:36,394 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 07:03:36,394 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 07:03:36,394 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 07:03:36,394 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 07:03:36,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 07:03:36,395 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 07:03:36,395 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 07:03:36,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 07:03:36,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 07:03:36,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 07:03:36,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 07:03:36,396 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-03 07:03:36,396 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-03 07:03:36,396 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 07:03:36,396 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 07:03:36,397 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-03 07:03:36,397 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 07:03:36,397 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 07:03:36,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 07:03:36,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 07:03:36,397 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 07:03:36,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:03:36,398 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 07:03:36,398 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 07:03:36,398 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 07:03:36,398 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-03 07:03:36,398 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 07:03:36,398 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-03 07:03:36,399 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-03 07:03:36,399 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/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(__VERIFIER_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 -> a6ab55767df3b26021df0e39ced39f80ee5a9fd9 [2018-12-03 07:03:36,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 07:03:36,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 07:03:36,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 07:03:36,436 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 07:03:36,437 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 07:03:36,437 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/../../sv-benchmarks/c/pthread/stack_longest_false-unreach-call.i [2018-12-03 07:03:36,476 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/f3facceda/fe9b83345f6543a6af25358dd3ba338f/FLAGe4f24ad87 [2018-12-03 07:03:36,903 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 07:03:36,903 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/sv-benchmarks/c/pthread/stack_longest_false-unreach-call.i [2018-12-03 07:03:36,910 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/f3facceda/fe9b83345f6543a6af25358dd3ba338f/FLAGe4f24ad87 [2018-12-03 07:03:36,918 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/data/f3facceda/fe9b83345f6543a6af25358dd3ba338f [2018-12-03 07:03:36,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 07:03:36,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 07:03:36,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 07:03:36,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 07:03:36,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 07:03:36,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:03:36" (1/1) ... [2018-12-03 07:03:36,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d597ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:36, skipping insertion in model container [2018-12-03 07:03:36,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:03:36" (1/1) ... [2018-12-03 07:03:36,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 07:03:36,949 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 07:03:37,179 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:03:37,215 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 07:03:37,273 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:03:37,332 INFO L195 MainTranslator]: Completed translation [2018-12-03 07:03:37,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37 WrapperNode [2018-12-03 07:03:37,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 07:03:37,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 07:03:37,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 07:03:37,333 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 07:03:37,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 07:03:37,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 07:03:37,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 07:03:37,364 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 07:03:37,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... [2018-12-03 07:03:37,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 07:03:37,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 07:03:37,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 07:03:37,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 07:03:37,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/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 [2018-12-03 07:03:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-03 07:03:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-03 07:03:37,416 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-03 07:03:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-03 07:03:37,416 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-03 07:03:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 07:03:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-03 07:03:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 07:03:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-03 07:03:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 07:03:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-03 07:03:37,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 07:03:37,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 07:03:37,418 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-03 07:03:37,684 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 07:03:37,684 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-03 07:03:37,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:03:37 BoogieIcfgContainer [2018-12-03 07:03:37,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 07:03:37,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 07:03:37,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 07:03:37,687 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 07:03:37,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 07:03:36" (1/3) ... [2018-12-03 07:03:37,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ca9066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:03:37, skipping insertion in model container [2018-12-03 07:03:37,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:03:37" (2/3) ... [2018-12-03 07:03:37,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ca9066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:03:37, skipping insertion in model container [2018-12-03 07:03:37,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:03:37" (3/3) ... [2018-12-03 07:03:37,689 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest_false-unreach-call.i [2018-12-03 07:03:37,714 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,715 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,715 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,715 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,715 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,715 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,715 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,715 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,716 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,717 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,718 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,719 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,720 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,721 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,721 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,721 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,721 WARN L317 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,721 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,721 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,721 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,722 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,723 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,723 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,724 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,725 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,726 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,727 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,728 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,728 WARN L317 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,728 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,728 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,728 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,728 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,728 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-03 07:03:37,739 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-03 07:03:37,739 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 07:03:37,745 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-03 07:03:37,754 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-03 07:03:37,768 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-03 07:03:37,769 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 07:03:37,769 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 07:03:37,769 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 07:03:37,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 07:03:37,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 07:03:37,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 07:03:37,769 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 07:03:37,769 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 07:03:37,776 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 126places, 134 transitions [2018-12-03 07:03:37,892 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5831 states. [2018-12-03 07:03:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states. [2018-12-03 07:03:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-03 07:03:37,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:37,909 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:37,910 INFO L423 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:37,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1443674920, now seen corresponding path program 1 times [2018-12-03 07:03:37,917 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:37,917 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:37,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:37,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:38,009 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 07:03:38,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:38,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:03:38,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:03:38,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:03:38,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:38,024 INFO L87 Difference]: Start difference. First operand 5831 states. Second operand 3 states. [2018-12-03 07:03:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:38,119 INFO L93 Difference]: Finished difference Result 8894 states and 23788 transitions. [2018-12-03 07:03:38,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:03:38,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-12-03 07:03:38,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:38,154 INFO L225 Difference]: With dead ends: 8894 [2018-12-03 07:03:38,154 INFO L226 Difference]: Without dead ends: 8786 [2018-12-03 07:03:38,155 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8786 states. [2018-12-03 07:03:38,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8786 to 7505. [2018-12-03 07:03:38,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7505 states. [2018-12-03 07:03:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 20265 transitions. [2018-12-03 07:03:38,336 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 20265 transitions. Word has length 45 [2018-12-03 07:03:38,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:38,336 INFO L480 AbstractCegarLoop]: Abstraction has 7505 states and 20265 transitions. [2018-12-03 07:03:38,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:03:38,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 20265 transitions. [2018-12-03 07:03:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-12-03 07:03:38,339 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:38,340 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:38,340 INFO L423 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:38,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:38,340 INFO L82 PathProgramCache]: Analyzing trace with hash -468912575, now seen corresponding path program 1 times [2018-12-03 07:03:38,341 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:38,341 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:38,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:38,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:38,412 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 07:03:38,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:38,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:03:38,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:03:38,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:03:38,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:38,415 INFO L87 Difference]: Start difference. First operand 7505 states and 20265 transitions. Second operand 3 states. [2018-12-03 07:03:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:38,455 INFO L93 Difference]: Finished difference Result 7610 states and 20262 transitions. [2018-12-03 07:03:38,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:03:38,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-12-03 07:03:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:38,472 INFO L225 Difference]: With dead ends: 7610 [2018-12-03 07:03:38,472 INFO L226 Difference]: Without dead ends: 7469 [2018-12-03 07:03:38,473 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2018-12-03 07:03:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7049. [2018-12-03 07:03:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7049 states. [2018-12-03 07:03:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7049 states to 7049 states and 18921 transitions. [2018-12-03 07:03:38,594 INFO L78 Accepts]: Start accepts. Automaton has 7049 states and 18921 transitions. Word has length 48 [2018-12-03 07:03:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:38,595 INFO L480 AbstractCegarLoop]: Abstraction has 7049 states and 18921 transitions. [2018-12-03 07:03:38,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:03:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7049 states and 18921 transitions. [2018-12-03 07:03:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-03 07:03:38,597 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:38,597 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:38,597 INFO L423 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:38,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:38,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2077443564, now seen corresponding path program 1 times [2018-12-03 07:03:38,597 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:38,597 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:38,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:38,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:38,660 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 07:03:38,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:38,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 07:03:38,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 07:03:38,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 07:03:38,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 07:03:38,662 INFO L87 Difference]: Start difference. First operand 7049 states and 18921 transitions. Second operand 4 states. [2018-12-03 07:03:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:38,724 INFO L93 Difference]: Finished difference Result 10046 states and 26925 transitions. [2018-12-03 07:03:38,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 07:03:38,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-12-03 07:03:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:38,752 INFO L225 Difference]: With dead ends: 10046 [2018-12-03 07:03:38,752 INFO L226 Difference]: Without dead ends: 10046 [2018-12-03 07:03:38,752 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:03:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2018-12-03 07:03:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 7331. [2018-12-03 07:03:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7331 states. [2018-12-03 07:03:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7331 states to 7331 states and 19689 transitions. [2018-12-03 07:03:38,875 INFO L78 Accepts]: Start accepts. Automaton has 7331 states and 19689 transitions. Word has length 53 [2018-12-03 07:03:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:38,876 INFO L480 AbstractCegarLoop]: Abstraction has 7331 states and 19689 transitions. [2018-12-03 07:03:38,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 07:03:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7331 states and 19689 transitions. [2018-12-03 07:03:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-12-03 07:03:38,879 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:38,880 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:38,880 INFO L423 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:38,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:38,880 INFO L82 PathProgramCache]: Analyzing trace with hash 421462888, now seen corresponding path program 1 times [2018-12-03 07:03:38,880 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:38,880 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:38,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:38,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:38,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:03:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:39,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:03:39,004 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 07:03:39,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:39,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:39,042 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:03:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:39,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-03 07:03:39,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2018-12-03 07:03:39,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 07:03:39,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 07:03:39,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-03 07:03:39,067 INFO L87 Difference]: Start difference. First operand 7331 states and 19689 transitions. Second operand 8 states. [2018-12-03 07:03:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:39,298 INFO L93 Difference]: Finished difference Result 22577 states and 60749 transitions. [2018-12-03 07:03:39,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-03 07:03:39,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2018-12-03 07:03:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:39,333 INFO L225 Difference]: With dead ends: 22577 [2018-12-03 07:03:39,333 INFO L226 Difference]: Without dead ends: 22577 [2018-12-03 07:03:39,334 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-03 07:03:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22577 states. [2018-12-03 07:03:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22577 to 18215. [2018-12-03 07:03:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18215 states. [2018-12-03 07:03:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18215 states to 18215 states and 49684 transitions. [2018-12-03 07:03:39,619 INFO L78 Accepts]: Start accepts. Automaton has 18215 states and 49684 transitions. Word has length 75 [2018-12-03 07:03:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:39,620 INFO L480 AbstractCegarLoop]: Abstraction has 18215 states and 49684 transitions. [2018-12-03 07:03:39,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 07:03:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 18215 states and 49684 transitions. [2018-12-03 07:03:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-03 07:03:39,624 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:39,624 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:39,624 INFO L423 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:39,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash -554610675, now seen corresponding path program 1 times [2018-12-03 07:03:39,625 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:39,625 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:39,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:39,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:39,714 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 07:03:39,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:39,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 07:03:39,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-03 07:03:39,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-03 07:03:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-03 07:03:39,717 INFO L87 Difference]: Start difference. First operand 18215 states and 49684 transitions. Second operand 7 states. [2018-12-03 07:03:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:39,902 INFO L93 Difference]: Finished difference Result 21092 states and 57259 transitions. [2018-12-03 07:03:39,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-03 07:03:39,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2018-12-03 07:03:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:39,925 INFO L225 Difference]: With dead ends: 21092 [2018-12-03 07:03:39,925 INFO L226 Difference]: Without dead ends: 21092 [2018-12-03 07:03:39,925 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-12-03 07:03:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21092 states. [2018-12-03 07:03:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21092 to 18962. [2018-12-03 07:03:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18962 states. [2018-12-03 07:03:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18962 states to 18962 states and 51559 transitions. [2018-12-03 07:03:40,143 INFO L78 Accepts]: Start accepts. Automaton has 18962 states and 51559 transitions. Word has length 78 [2018-12-03 07:03:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:40,143 INFO L480 AbstractCegarLoop]: Abstraction has 18962 states and 51559 transitions. [2018-12-03 07:03:40,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-03 07:03:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand 18962 states and 51559 transitions. [2018-12-03 07:03:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-12-03 07:03:40,149 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:40,149 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:40,149 INFO L423 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:40,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:40,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1951242633, now seen corresponding path program 1 times [2018-12-03 07:03:40,150 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:40,150 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:40,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:40,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:40,269 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-12-03 07:03:40,271 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-03 07:03:40,271 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,273 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,275 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,275 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-12-03 07:03:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:40,284 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 07:03:40,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:40,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:03:40,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:03:40,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:03:40,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:40,287 INFO L87 Difference]: Start difference. First operand 18962 states and 51559 transitions. Second operand 3 states. [2018-12-03 07:03:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:40,318 INFO L93 Difference]: Finished difference Result 9161 states and 23576 transitions. [2018-12-03 07:03:40,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:03:40,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2018-12-03 07:03:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:40,325 INFO L225 Difference]: With dead ends: 9161 [2018-12-03 07:03:40,325 INFO L226 Difference]: Without dead ends: 9161 [2018-12-03 07:03:40,326 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:03:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9161 states. [2018-12-03 07:03:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9161 to 7520. [2018-12-03 07:03:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2018-12-03 07:03:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 19216 transitions. [2018-12-03 07:03:40,411 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 19216 transitions. Word has length 87 [2018-12-03 07:03:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:40,411 INFO L480 AbstractCegarLoop]: Abstraction has 7520 states and 19216 transitions. [2018-12-03 07:03:40,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:03:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 19216 transitions. [2018-12-03 07:03:40,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-12-03 07:03:40,416 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:40,416 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:40,416 INFO L423 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:40,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:40,416 INFO L82 PathProgramCache]: Analyzing trace with hash 804416913, now seen corresponding path program 1 times [2018-12-03 07:03:40,417 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:40,417 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:40,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:40,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:40,675 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-03 07:03:40,677 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-03 07:03:40,678 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,680 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,689 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,689 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-03 07:03:40,954 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-03 07:03:40,958 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-03 07:03:40,958 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,961 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,963 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-03 07:03:40,963 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-03 07:03:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:41,183 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-03 07:03:41,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:03:41,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-12-03 07:03:41,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-03 07:03:41,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-03 07:03:41,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-12-03 07:03:41,187 INFO L87 Difference]: Start difference. First operand 7520 states and 19216 transitions. Second operand 22 states. [2018-12-03 07:03:45,686 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-12-03 07:03:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:46,673 INFO L93 Difference]: Finished difference Result 16703 states and 42637 transitions. [2018-12-03 07:03:46,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-03 07:03:46,673 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 88 [2018-12-03 07:03:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:46,687 INFO L225 Difference]: With dead ends: 16703 [2018-12-03 07:03:46,687 INFO L226 Difference]: Without dead ends: 16703 [2018-12-03 07:03:46,688 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=443, Invalid=2313, Unknown=0, NotChecked=0, Total=2756 [2018-12-03 07:03:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16703 states. [2018-12-03 07:03:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16703 to 9317. [2018-12-03 07:03:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9317 states. [2018-12-03 07:03:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9317 states to 9317 states and 24008 transitions. [2018-12-03 07:03:46,824 INFO L78 Accepts]: Start accepts. Automaton has 9317 states and 24008 transitions. Word has length 88 [2018-12-03 07:03:46,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:46,824 INFO L480 AbstractCegarLoop]: Abstraction has 9317 states and 24008 transitions. [2018-12-03 07:03:46,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-03 07:03:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 9317 states and 24008 transitions. [2018-12-03 07:03:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-12-03 07:03:46,829 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:46,829 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:46,829 INFO L423 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:46,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:46,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1351673221, now seen corresponding path program 1 times [2018-12-03 07:03:46,830 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:46,830 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:46,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:46,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:46,936 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:03:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:47,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:03:47,025 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-03 07:03:47,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:03:47,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 07:03:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:47,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 07:03:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:03:47,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-03 07:03:47,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 16 [2018-12-03 07:03:47,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-03 07:03:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-03 07:03:47,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-12-03 07:03:47,091 INFO L87 Difference]: Start difference. First operand 9317 states and 24008 transitions. Second operand 16 states. [2018-12-03 07:03:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:03:47,470 INFO L93 Difference]: Finished difference Result 16151 states and 41008 transitions. [2018-12-03 07:03:47,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-03 07:03:47,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2018-12-03 07:03:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:03:47,482 INFO L225 Difference]: With dead ends: 16151 [2018-12-03 07:03:47,482 INFO L226 Difference]: Without dead ends: 16151 [2018-12-03 07:03:47,483 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2018-12-03 07:03:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16151 states. [2018-12-03 07:03:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16151 to 11972. [2018-12-03 07:03:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11972 states. [2018-12-03 07:03:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11972 states to 11972 states and 30985 transitions. [2018-12-03 07:03:47,600 INFO L78 Accepts]: Start accepts. Automaton has 11972 states and 30985 transitions. Word has length 109 [2018-12-03 07:03:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:03:47,601 INFO L480 AbstractCegarLoop]: Abstraction has 11972 states and 30985 transitions. [2018-12-03 07:03:47,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-03 07:03:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 11972 states and 30985 transitions. [2018-12-03 07:03:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-03 07:03:47,606 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:03:47,606 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:03:47,606 INFO L423 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 07:03:47,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:03:47,606 INFO L82 PathProgramCache]: Analyzing trace with hash 424335229, now seen corresponding path program 1 times [2018-12-03 07:03:47,607 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-03 07:03:47,607 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-03 07:03:47,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:03:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 07:03:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 07:03:48,026 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 07:03:48,084 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-03 07:03:48,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:03:48 BasicIcfg [2018-12-03 07:03:48,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 07:03:48,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 07:03:48,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 07:03:48,086 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 07:03:48,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:03:37" (3/4) ... [2018-12-03 07:03:48,087 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 07:03:48,139 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0be7c4cf-b285-48ba-984a-a595b1f785bd/bin-2019/utaipan/witness.graphml [2018-12-03 07:03:48,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 07:03:48,139 INFO L168 Benchmark]: Toolchain (without parser) took 11219.36 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 540.0 MB). Free memory was 938.0 MB in the beginning and 876.5 MB in the end (delta: 61.5 MB). Peak memory consumption was 601.5 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:48,140 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:03:48,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -150.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:48,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:03:48,140 INFO L168 Benchmark]: Boogie Preprocessor took 19.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:48,141 INFO L168 Benchmark]: RCFGBuilder took 302.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:48,141 INFO L168 Benchmark]: TraceAbstraction took 10399.66 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 397.4 MB). Free memory was 1.0 GB in the beginning and 902.9 MB in the end (delta: 141.4 MB). Peak memory consumption was 538.8 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:48,141 INFO L168 Benchmark]: Witness Printer took 53.26 ms. Allocated memory is still 1.6 GB. Free memory was 902.9 MB in the beginning and 876.5 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2018-12-03 07:03:48,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 411.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -150.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 302.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10399.66 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 397.4 MB). Free memory was 1.0 GB in the beginning and 902.9 MB in the end (delta: 141.4 MB). Peak memory consumption was 538.8 MB. Max. memory is 11.5 GB. * Witness Printer took 53.26 ms. Allocated memory is still 1.6 GB. Free memory was 902.9 MB in the beginning and 876.5 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 920]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L914] -1 static int top=0; VAL [top=0] [L915] -1 static unsigned int arr[(800)]; VAL [arr={11:0}, top=0] [L916] -1 pthread_mutex_t m; VAL [arr={11:0}, m={2:0}, top=0] [L917] -1 _Bool flag=(0); VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L999] -1 pthread_t id1, id2; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L1001] FCALL, FORK -1 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L1002] FCALL, FORK -1 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L984] 0 int i; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L985] 0 i=0 VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L968] 1 int i; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L985] COND TRUE 0 i<(800) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L969] 1 unsigned int tmp; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L970] 1 i=0 VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L970] COND TRUE 1 i<(800) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L973] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L940] COND FALSE 1 !(top==(800)) VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L932] 1 return top; VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L947] 1 stack[get_top()] = x VAL [arr={11:0}, flag=0, m={2:0}, top=0] [L924] 1 top++ VAL [arr={11:0}, flag=0, m={2:0}, top=1] [L950] 1 return 0; VAL [arr={11:0}, flag=0, m={2:0}, top=1] [L975] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arr={11:0}, flag=0, m={2:0}, top=1] [L977] 1 flag=(1) VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L988] COND TRUE 0 \read(flag) VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L932] 0 return top; VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L954] COND FALSE 0 !(get_top()==0) VAL [arr={11:0}, flag=1, m={2:0}, top=1] [L928] 0 top-- VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L932] 0 return top; VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L962] EXPR 0 stack[get_top()] VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L962] 0 return stack[get_top()]; VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L990] COND FALSE 0 !(!(pop(arr)!=(-2))) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L985] 0 i++ VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L985] COND TRUE 0 i<(800) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L988] COND TRUE 0 \read(flag) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L932] 0 return top; VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L954] COND TRUE 0 get_top()==0 VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L957] 0 return (-2); VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L990] COND TRUE 0 !(pop(arr)!=(-2)) VAL [arr={11:0}, flag=1, m={2:0}, top=0] [L920] 0 __VERIFIER_error() VAL [arr={11:0}, flag=1, m={2:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 4 error locations. UNSAFE Result, 10.3s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 6.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1901 SDtfs, 3337 SDslu, 11782 SDs, 0 SdLazy, 2349 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1185 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18962occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 24114 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 877 NumberOfCodeBlocks, 877 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1121 ConstructedInterpolants, 0 QuantifiedInterpolants, 403084 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1235 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 8/164 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...