./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 5f3104f8866991317081f2a037cd413a142d8b2f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 5f3104f8866991317081f2a037cd413a142d8b2f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-26 02:33:40,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:33:40,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:33:40,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:33:40,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:33:40,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:33:40,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:33:40,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:33:40,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:33:40,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:33:40,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:33:40,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:33:40,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:33:40,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:33:40,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:33:40,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:33:40,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:33:40,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:33:40,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:33:40,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:33:40,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:33:40,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:33:40,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:33:40,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:33:40,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:33:40,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:33:40,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:33:40,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:33:40,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:33:40,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:33:40,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:33:40,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:33:40,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:33:40,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:33:40,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:33:40,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:33:40,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:33:40,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:33:40,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:33:40,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:33:40,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:33:40,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:33:40,926 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:33:40,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:33:40,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:33:40,927 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:33:40,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:33:40,928 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:33:40,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:33:40,928 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:33:40,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:33:40,928 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:33:40,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:33:40,929 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:33:40,929 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:33:40,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:33:40,929 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:33:40,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:33:40,930 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:33:40,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:33:40,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:33:40,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:33:40,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:33:40,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:33:40,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:33:40,931 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:33:40,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:33:40,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:33:40,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:33:40,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:33:40,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:33:40,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:33:40,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:33:40,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:33:40,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:33:40,943 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:33:40,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:33:40,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:33:40,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:33:40,944 INFO L138 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/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 -> 5f3104f8866991317081f2a037cd413a142d8b2f [2019-11-26 02:33:41,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:33:41,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:33:41,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:33:41,107 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:33:41,108 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:33:41,108 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/../../sv-benchmarks/c/pthread/triangular-2.i [2019-11-26 02:33:41,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/53db7e7bd/0fd09cfe66a047f694613458c19e9e5d/FLAGd72bce3a2 [2019-11-26 02:33:41,669 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:33:41,671 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/sv-benchmarks/c/pthread/triangular-2.i [2019-11-26 02:33:41,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/53db7e7bd/0fd09cfe66a047f694613458c19e9e5d/FLAGd72bce3a2 [2019-11-26 02:33:42,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/53db7e7bd/0fd09cfe66a047f694613458c19e9e5d [2019-11-26 02:33:42,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:33:42,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:33:42,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:42,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:33:42,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:33:42,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e1c401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42, skipping insertion in model container [2019-11-26 02:33:42,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:33:42,191 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:33:42,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:42,597 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:33:42,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:42,749 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:33:42,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42 WrapperNode [2019-11-26 02:33:42,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:42,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:42,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:33:42,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:33:42,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:42,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:33:42,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:33:42,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:33:42,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... [2019-11-26 02:33:42,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:33:42,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:33:42,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:33:42,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:33:42,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:33:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-26 02:33:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-26 02:33:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-26 02:33:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-26 02:33:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:33:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:33:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:33:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:33:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:33:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:33:42,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:33:42,899 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:33:43,252 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:33:43,252 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:33:43,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:43 BoogieIcfgContainer [2019-11-26 02:33:43,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:33:43,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:33:43,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:33:43,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:33:43,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:33:42" (1/3) ... [2019-11-26 02:33:43,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc2d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:43, skipping insertion in model container [2019-11-26 02:33:43,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:42" (2/3) ... [2019-11-26 02:33:43,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc2d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:43, skipping insertion in model container [2019-11-26 02:33:43,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:43" (3/3) ... [2019-11-26 02:33:43,260 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2019-11-26 02:33:43,299 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,299 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,299 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,299 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,300 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,300 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,300 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,300 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,300 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,301 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,301 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,301 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,301 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,314 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,314 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,314 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,314 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,315 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,315 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,315 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,315 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,316 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,316 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,316 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,316 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,317 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,317 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,320 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,320 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,320 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,320 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,321 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,321 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,321 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,321 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,322 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,322 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,322 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,322 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,322 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,322 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,323 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,323 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,323 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,323 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,324 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,324 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,324 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,324 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,324 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,324 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,325 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,325 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,325 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,325 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,329 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,330 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,330 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,331 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,331 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,331 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,332 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,332 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,333 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,333 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,333 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,334 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,334 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,334 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,334 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,335 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,335 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,335 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,335 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,336 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,336 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,336 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,337 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,337 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,337 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,338 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,338 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,339 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,339 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:43,353 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:33:43,353 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:33:43,359 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:33:43,368 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:33:43,384 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:33:43,384 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:33:43,385 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:33:43,385 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:33:43,385 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:33:43,385 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:33:43,385 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:33:43,385 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:33:43,396 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 93 transitions [2019-11-26 02:33:43,494 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1013 states. [2019-11-26 02:33:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states. [2019-11-26 02:33:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-26 02:33:43,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:43,505 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:43,505 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1140660711, now seen corresponding path program 1 times [2019-11-26 02:33:43,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:43,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219743074] [2019-11-26 02:33:43,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:43,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219743074] [2019-11-26 02:33:43,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:43,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:33:43,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679292812] [2019-11-26 02:33:43,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:33:43,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:33:43,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:33:43,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:33:43,877 INFO L87 Difference]: Start difference. First operand 1013 states. Second operand 5 states. [2019-11-26 02:33:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:44,051 INFO L93 Difference]: Finished difference Result 1778 states and 5126 transitions. [2019-11-26 02:33:44,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:33:44,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-26 02:33:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:44,088 INFO L225 Difference]: With dead ends: 1778 [2019-11-26 02:33:44,088 INFO L226 Difference]: Without dead ends: 500 [2019-11-26 02:33:44,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:33:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-26 02:33:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 388. [2019-11-26 02:33:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-11-26 02:33:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 993 transitions. [2019-11-26 02:33:44,185 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 993 transitions. Word has length 20 [2019-11-26 02:33:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:44,186 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 993 transitions. [2019-11-26 02:33:44,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:33:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 993 transitions. [2019-11-26 02:33:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:33:44,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:44,190 INFO L410 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] [2019-11-26 02:33:44,191 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:44,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:44,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1489054159, now seen corresponding path program 1 times [2019-11-26 02:33:44,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:44,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146980584] [2019-11-26 02:33:44,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:44,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146980584] [2019-11-26 02:33:44,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:44,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:33:44,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816876543] [2019-11-26 02:33:44,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:33:44,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:33:44,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:33:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:33:44,335 INFO L87 Difference]: Start difference. First operand 388 states and 993 transitions. Second operand 5 states. [2019-11-26 02:33:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:44,412 INFO L93 Difference]: Finished difference Result 465 states and 1147 transitions. [2019-11-26 02:33:44,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:33:44,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-26 02:33:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:44,416 INFO L225 Difference]: With dead ends: 465 [2019-11-26 02:33:44,416 INFO L226 Difference]: Without dead ends: 344 [2019-11-26 02:33:44,417 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:33:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2019-11-26 02:33:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 320. [2019-11-26 02:33:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-26 02:33:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 815 transitions. [2019-11-26 02:33:44,440 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 815 transitions. Word has length 23 [2019-11-26 02:33:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:44,441 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 815 transitions. [2019-11-26 02:33:44,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:33:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 815 transitions. [2019-11-26 02:33:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-26 02:33:44,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:44,443 INFO L410 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] [2019-11-26 02:33:44,443 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:44,444 INFO L82 PathProgramCache]: Analyzing trace with hash 913376083, now seen corresponding path program 1 times [2019-11-26 02:33:44,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:44,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134417461] [2019-11-26 02:33:44,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:44,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:44,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134417461] [2019-11-26 02:33:44,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:44,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:33:44,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171824260] [2019-11-26 02:33:44,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:33:44,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:33:44,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:33:44,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:33:44,590 INFO L87 Difference]: Start difference. First operand 320 states and 815 transitions. Second operand 5 states. [2019-11-26 02:33:44,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:44,784 INFO L93 Difference]: Finished difference Result 421 states and 1017 transitions. [2019-11-26 02:33:44,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:33:44,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-26 02:33:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:44,789 INFO L225 Difference]: With dead ends: 421 [2019-11-26 02:33:44,789 INFO L226 Difference]: Without dead ends: 291 [2019-11-26 02:33:44,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:33:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-11-26 02:33:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2019-11-26 02:33:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-11-26 02:33:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 715 transitions. [2019-11-26 02:33:44,818 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 715 transitions. Word has length 23 [2019-11-26 02:33:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:44,818 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 715 transitions. [2019-11-26 02:33:44,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:33:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 715 transitions. [2019-11-26 02:33:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:33:44,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:44,821 INFO L410 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] [2019-11-26 02:33:44,821 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:44,822 INFO L82 PathProgramCache]: Analyzing trace with hash 597396229, now seen corresponding path program 1 times [2019-11-26 02:33:44,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:44,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904917989] [2019-11-26 02:33:44,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:44,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904917989] [2019-11-26 02:33:44,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:44,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:33:44,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854021754] [2019-11-26 02:33:44,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:33:44,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:33:44,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:33:44,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:33:44,998 INFO L87 Difference]: Start difference. First operand 291 states and 715 transitions. Second operand 6 states. [2019-11-26 02:33:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:45,190 INFO L93 Difference]: Finished difference Result 438 states and 1058 transitions. [2019-11-26 02:33:45,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:33:45,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-26 02:33:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:45,201 INFO L225 Difference]: With dead ends: 438 [2019-11-26 02:33:45,201 INFO L226 Difference]: Without dead ends: 310 [2019-11-26 02:33:45,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:33:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-11-26 02:33:45,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 300. [2019-11-26 02:33:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-11-26 02:33:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 733 transitions. [2019-11-26 02:33:45,215 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 733 transitions. Word has length 26 [2019-11-26 02:33:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:45,216 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 733 transitions. [2019-11-26 02:33:45,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:33:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 733 transitions. [2019-11-26 02:33:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:33:45,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:45,223 INFO L410 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] [2019-11-26 02:33:45,223 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:45,224 INFO L82 PathProgramCache]: Analyzing trace with hash 570584329, now seen corresponding path program 2 times [2019-11-26 02:33:45,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:45,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205942391] [2019-11-26 02:33:45,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:45,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205942391] [2019-11-26 02:33:45,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:45,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:33:45,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023168915] [2019-11-26 02:33:45,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:33:45,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:33:45,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:33:45,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:33:45,366 INFO L87 Difference]: Start difference. First operand 300 states and 733 transitions. Second operand 6 states. [2019-11-26 02:33:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:45,521 INFO L93 Difference]: Finished difference Result 457 states and 1096 transitions. [2019-11-26 02:33:45,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:33:45,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-26 02:33:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:45,525 INFO L225 Difference]: With dead ends: 457 [2019-11-26 02:33:45,525 INFO L226 Difference]: Without dead ends: 320 [2019-11-26 02:33:45,526 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:33:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-26 02:33:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-26 02:33:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-26 02:33:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 773 transitions. [2019-11-26 02:33:45,538 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 773 transitions. Word has length 26 [2019-11-26 02:33:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:45,539 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 773 transitions. [2019-11-26 02:33:45,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:33:45,539 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 773 transitions. [2019-11-26 02:33:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-26 02:33:45,541 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:45,541 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:45,541 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash -66636472, now seen corresponding path program 1 times [2019-11-26 02:33:45,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:33:45,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863331135] [2019-11-26 02:33:45,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:33:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:45,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863331135] [2019-11-26 02:33:45,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092687772] [2019-11-26 02:33:45,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:33:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:45,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:33:45,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:45,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:45,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:45,891 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:45,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:45,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:45,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:45,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:45,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [841238022] [2019-11-26 02:33:45,966 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: UnsupportedOperationException [2019-11-26 02:33:46,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:33:46,172 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:269) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1556) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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) [2019-11-26 02:33:46,175 INFO L168 Benchmark]: Toolchain (without parser) took 4044.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:46,176 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:46,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:46,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.40 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:46,178 INFO L168 Benchmark]: Boogie Preprocessor took 25.90 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. [2019-11-26 02:33:46,178 INFO L168 Benchmark]: RCFGBuilder took 422.61 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:46,179 INFO L168 Benchmark]: TraceAbstraction took 2919.29 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: -22.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:46,182 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 612.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 422.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2919.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -22.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:294) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:33:48,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:33:48,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:33:48,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:33:48,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:33:48,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:33:48,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:33:48,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:33:48,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:33:48,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:33:48,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:33:48,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:33:48,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:33:48,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:33:48,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:33:48,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:33:48,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:33:48,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:33:48,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:33:48,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:33:48,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:33:48,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:33:48,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:33:48,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:33:48,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:33:48,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:33:48,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:33:48,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:33:48,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:33:48,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:33:48,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:33:48,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:33:48,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:33:48,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:33:48,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:33:48,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:33:48,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:33:48,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:33:48,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:33:48,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:33:48,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:33:48,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:33:48,187 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:33:48,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:33:48,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:33:48,189 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:33:48,189 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:33:48,190 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:33:48,190 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:33:48,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:33:48,190 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:33:48,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:33:48,192 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:33:48,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:33:48,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:33:48,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:33:48,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:33:48,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:33:48,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:33:48,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:33:48,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:33:48,195 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:33:48,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:33:48,195 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:33:48,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:33:48,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:33:48,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:33:48,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:33:48,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:33:48,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:33:48,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:33:48,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:33:48,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:33:48,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:33:48,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:33:48,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:33:48,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:33:48,199 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 -> 5f3104f8866991317081f2a037cd413a142d8b2f [2019-11-26 02:33:48,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:33:48,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:33:48,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:33:48,470 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:33:48,470 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:33:48,471 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/../../sv-benchmarks/c/pthread/triangular-2.i [2019-11-26 02:33:48,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/55c311690/07f80401ebaf401f934d29ff9946da63/FLAGac644edaf [2019-11-26 02:33:48,979 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:33:48,979 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/sv-benchmarks/c/pthread/triangular-2.i [2019-11-26 02:33:48,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/55c311690/07f80401ebaf401f934d29ff9946da63/FLAGac644edaf [2019-11-26 02:33:49,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/data/55c311690/07f80401ebaf401f934d29ff9946da63 [2019-11-26 02:33:49,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:33:49,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:33:49,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:49,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:33:49,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:33:49,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:49,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efd1d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49, skipping insertion in model container [2019-11-26 02:33:49,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:49,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:33:49,431 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:33:49,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:49,823 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:33:49,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:33:49,953 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:33:49,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49 WrapperNode [2019-11-26 02:33:49,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:33:49,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:49,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:33:49,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:33:49,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:49,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:49,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:33:49,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:33:50,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:33:50,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:33:50,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:50,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:50,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:50,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:50,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:50,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:50,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... [2019-11-26 02:33:50,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:33:50,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:33:50,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:33:50,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:33:50,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:33:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-26 02:33:50,082 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-26 02:33:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-26 02:33:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-26 02:33:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:33:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:33:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:33:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:33:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:33:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:33:50,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:33:50,086 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:33:50,438 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:33:50,438 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:33:50,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:50 BoogieIcfgContainer [2019-11-26 02:33:50,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:33:50,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:33:50,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:33:50,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:33:50,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:33:49" (1/3) ... [2019-11-26 02:33:50,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64981e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:50, skipping insertion in model container [2019-11-26 02:33:50,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:33:49" (2/3) ... [2019-11-26 02:33:50,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64981e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:33:50, skipping insertion in model container [2019-11-26 02:33:50,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:50" (3/3) ... [2019-11-26 02:33:50,446 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2019-11-26 02:33:50,485 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,486 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,486 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,486 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,487 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,487 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,487 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,487 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,488 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,488 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,488 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,488 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,489 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,489 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,489 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,489 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,490 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,490 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,490 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,490 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,491 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,491 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,491 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,491 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,491 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,492 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,492 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,492 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,493 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,493 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,493 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,493 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,493 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,494 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,494 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,494 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,494 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,495 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,495 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,495 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,495 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,496 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,496 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,496 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,496 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,497 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,497 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,497 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,497 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,498 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,498 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,498 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,498 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,499 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,499 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,499 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,499 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,499 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,500 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,500 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,500 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,500 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,501 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,501 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,501 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,501 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,501 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,502 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,502 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,502 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,502 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,503 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,503 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,503 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,503 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,504 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,504 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,504 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,504 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,505 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,505 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,505 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,505 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,505 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:33:50,523 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:33:50,524 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:33:50,530 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:33:50,540 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:33:50,555 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:33:50,555 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:33:50,555 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:33:50,555 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:33:50,555 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:33:50,555 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:33:50,556 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:33:50,556 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:33:50,567 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 94 transitions [2019-11-26 02:33:50,666 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1014 states. [2019-11-26 02:33:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states. [2019-11-26 02:33:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:33:50,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:50,677 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:50,678 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:50,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:50,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1759604671, now seen corresponding path program 1 times [2019-11-26 02:33:50,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:50,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [842211496] [2019-11-26 02:33:50,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 [2019-11-26 02:33:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:50,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:33:50,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:50,937 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:50,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:50,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:51,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [842211496] [2019-11-26 02:33:51,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:51,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-26 02:33:51,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856698862] [2019-11-26 02:33:51,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:33:51,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:51,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:33:51,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:33:51,061 INFO L87 Difference]: Start difference. First operand 1014 states. Second operand 7 states. [2019-11-26 02:33:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:51,415 INFO L93 Difference]: Finished difference Result 2731 states and 7871 transitions. [2019-11-26 02:33:51,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:33:51,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-26 02:33:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:51,447 INFO L225 Difference]: With dead ends: 2731 [2019-11-26 02:33:51,448 INFO L226 Difference]: Without dead ends: 586 [2019-11-26 02:33:51,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:33:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2019-11-26 02:33:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 387. [2019-11-26 02:33:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-11-26 02:33:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 949 transitions. [2019-11-26 02:33:51,557 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 949 transitions. Word has length 21 [2019-11-26 02:33:51,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:51,558 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 949 transitions. [2019-11-26 02:33:51,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:33:51,558 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 949 transitions. [2019-11-26 02:33:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:33:51,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:51,561 INFO L410 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] [2019-11-26 02:33:51,764 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:33:51,764 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:51,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1049840537, now seen corresponding path program 1 times [2019-11-26 02:33:51,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:51,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1284000644] [2019-11-26 02:33:51,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 [2019-11-26 02:33:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:51,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:33:51,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:51,974 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:51,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:51,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:51,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:52,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1284000644] [2019-11-26 02:33:52,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:52,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:33:52,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426814041] [2019-11-26 02:33:52,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:33:52,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:52,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:33:52,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:33:52,130 INFO L87 Difference]: Start difference. First operand 387 states and 949 transitions. Second operand 9 states. [2019-11-26 02:33:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:52,769 INFO L93 Difference]: Finished difference Result 761 states and 1843 transitions. [2019-11-26 02:33:52,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-26 02:33:52,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-26 02:33:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:52,774 INFO L225 Difference]: With dead ends: 761 [2019-11-26 02:33:52,775 INFO L226 Difference]: Without dead ends: 358 [2019-11-26 02:33:52,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:33:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2019-11-26 02:33:52,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 327. [2019-11-26 02:33:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-11-26 02:33:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 786 transitions. [2019-11-26 02:33:52,819 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 786 transitions. Word has length 27 [2019-11-26 02:33:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:52,820 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 786 transitions. [2019-11-26 02:33:52,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:33:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 786 transitions. [2019-11-26 02:33:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:33:52,823 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:52,823 INFO L410 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] [2019-11-26 02:33:53,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:33:53,026 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash -719025187, now seen corresponding path program 2 times [2019-11-26 02:33:53,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:53,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1150227632] [2019-11-26 02:33:53,027 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 [2019-11-26 02:33:53,168 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-26 02:33:53,169 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:33:53,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:33:53,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:53,222 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:53,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:53,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:53,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150227632] [2019-11-26 02:33:53,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:33:53,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-26 02:33:53,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491933530] [2019-11-26 02:33:53,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:33:53,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:53,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:33:53,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:33:53,356 INFO L87 Difference]: Start difference. First operand 327 states and 786 transitions. Second operand 9 states. [2019-11-26 02:33:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:53,824 INFO L93 Difference]: Finished difference Result 677 states and 1633 transitions. [2019-11-26 02:33:53,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:33:53,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-26 02:33:53,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:53,829 INFO L225 Difference]: With dead ends: 677 [2019-11-26 02:33:53,829 INFO L226 Difference]: Without dead ends: 385 [2019-11-26 02:33:53,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:33:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2019-11-26 02:33:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2019-11-26 02:33:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-11-26 02:33:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 902 transitions. [2019-11-26 02:33:53,845 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 902 transitions. Word has length 27 [2019-11-26 02:33:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:53,845 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 902 transitions. [2019-11-26 02:33:53,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:33:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 902 transitions. [2019-11-26 02:33:53,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:33:53,850 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:53,850 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-26 02:33:54,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:33:54,052 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash -38586022, now seen corresponding path program 1 times [2019-11-26 02:33:54,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:54,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1764157052] [2019-11-26 02:33:54,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 [2019-11-26 02:33:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:54,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:33:54,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:54,333 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:54,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:54,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:54,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1764157052] [2019-11-26 02:33:54,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812532731] [2019-11-26 02:33:54,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:33:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:33:54,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:33:54,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:54,712 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:54,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:54,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:54,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:54,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:33:54,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 15 [2019-11-26 02:33:54,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737805613] [2019-11-26 02:33:54,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:33:54,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:54,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:33:54,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:33:54,730 INFO L87 Difference]: Start difference. First operand 385 states and 902 transitions. Second operand 15 states. [2019-11-26 02:33:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:56,231 INFO L93 Difference]: Finished difference Result 924 states and 2225 transitions. [2019-11-26 02:33:56,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-26 02:33:56,232 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-26 02:33:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:56,236 INFO L225 Difference]: With dead ends: 924 [2019-11-26 02:33:56,236 INFO L226 Difference]: Without dead ends: 465 [2019-11-26 02:33:56,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2019-11-26 02:33:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2019-11-26 02:33:56,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 401. [2019-11-26 02:33:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2019-11-26 02:33:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 934 transitions. [2019-11-26 02:33:56,251 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 934 transitions. Word has length 39 [2019-11-26 02:33:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:56,251 INFO L462 AbstractCegarLoop]: Abstraction has 401 states and 934 transitions. [2019-11-26 02:33:56,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:33:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 934 transitions. [2019-11-26 02:33:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:33:56,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:56,254 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-26 02:33:56,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:33:56,668 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:56,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:56,669 INFO L82 PathProgramCache]: Analyzing trace with hash 639874330, now seen corresponding path program 2 times [2019-11-26 02:33:56,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:56,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [162182441] [2019-11-26 02:33:56,669 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 [2019-11-26 02:33:56,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:33:56,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:33:56,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:33:56,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:56,898 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:56,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:56,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:57,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [162182441] [2019-11-26 02:33:57,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645416529] [2019-11-26 02:33:57,229 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:33:57,285 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:33:57,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:33:57,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:33:57,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:33:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:57,296 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:33:57,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:57,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:57,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:33:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:33:57,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:33:57,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 15 [2019-11-26 02:33:57,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198772316] [2019-11-26 02:33:57,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:33:57,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:33:57,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:33:57,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:33:57,313 INFO L87 Difference]: Start difference. First operand 401 states and 934 transitions. Second operand 15 states. [2019-11-26 02:33:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:33:58,742 INFO L93 Difference]: Finished difference Result 1198 states and 2822 transitions. [2019-11-26 02:33:58,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-26 02:33:58,747 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-26 02:33:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:33:58,751 INFO L225 Difference]: With dead ends: 1198 [2019-11-26 02:33:58,751 INFO L226 Difference]: Without dead ends: 657 [2019-11-26 02:33:58,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2019-11-26 02:33:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-11-26 02:33:58,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 561. [2019-11-26 02:33:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2019-11-26 02:33:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1254 transitions. [2019-11-26 02:33:58,767 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1254 transitions. Word has length 39 [2019-11-26 02:33:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:33:58,768 INFO L462 AbstractCegarLoop]: Abstraction has 561 states and 1254 transitions. [2019-11-26 02:33:58,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:33:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1254 transitions. [2019-11-26 02:33:58,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-26 02:33:58,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:33:58,771 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:33:59,173 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:33:59,173 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:33:59,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:33:59,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1692955281, now seen corresponding path program 3 times [2019-11-26 02:33:59,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:33:59,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1105713928] [2019-11-26 02:33:59,175 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/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 [2019-11-26 02:33:59,389 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:33:59,389 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-26 02:33:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:33:59,572 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:33:59,572 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:33:59,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:33:59,865 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:33:59,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:33:59 BasicIcfg [2019-11-26 02:33:59,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:33:59,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:33:59,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:33:59,868 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:33:59,868 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:33:50" (3/4) ... [2019-11-26 02:33:59,870 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:33:59,971 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_96090d03-7993-4ae5-af9f-723e9e28730a/bin/utaipan/witness.graphml [2019-11-26 02:33:59,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:33:59,974 INFO L168 Benchmark]: Toolchain (without parser) took 10602.78 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.4 MB). Free memory was 951.0 MB in the beginning and 848.0 MB in the end (delta: 102.9 MB). Peak memory consumption was 338.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:59,974 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:33:59,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:59,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.61 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. [2019-11-26 02:33:59,975 INFO L168 Benchmark]: Boogie Preprocessor took 28.48 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. [2019-11-26 02:33:59,976 INFO L168 Benchmark]: RCFGBuilder took 411.22 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:59,976 INFO L168 Benchmark]: TraceAbstraction took 9427.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 862.5 MB in the end (delta: 249.0 MB). Peak memory consumption was 316.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:59,977 INFO L168 Benchmark]: Witness Printer took 104.55 ms. Allocated memory is still 1.3 GB. Free memory was 862.5 MB in the beginning and 848.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:33:59,979 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 582.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -193.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.61 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 28.48 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. * RCFGBuilder took 411.22 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9427.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 862.5 MB in the end (delta: 249.0 MB). Peak memory consumption was 316.6 MB. Max. memory is 11.5 GB. * Witness Printer took 104.55 ms. Allocated memory is still 1.3 GB. Free memory was 862.5 MB in the beginning and 848.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] 0 int i = 3, j = 6; VAL [i=3, j=6] [L693] 0 pthread_t id1, id2; VAL [i=3, j=6] [L694] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L677] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L695] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L685] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=0, k=1] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1, k++=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1, k++=0, k++=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=1, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2, k++=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2, k++=1, k++=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3, k++=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3, k++=2, k++=3] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=3, k=4] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L697] 0 int condI = i >= (2*5 +6); [L700] 0 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L702] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 102 locations, 1 error locations. Result: UNSAFE, OverallTime: 9.3s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 359 SDtfs, 1653 SDslu, 1890 SDs, 0 SdLazy, 409 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1014occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 390 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 448 ConstructedInterpolants, 0 QuantifiedInterpolants, 113312 SizeOfPredicates, 46 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 0/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...