./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/sigma.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_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/sigma.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d ............................................................................................................................................................................................................................................................................................................................................................................ 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_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/sigma.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:39:33,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:39:33,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:39:33,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:39:33,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:39:33,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:39:33,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:39:33,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:39:33,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:39:33,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:39:33,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:39:33,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:39:33,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:39:33,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:39:33,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:39:33,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:39:33,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:39:33,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:39:33,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:39:33,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:39:33,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:39:33,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:39:33,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:39:33,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:39:33,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:39:33,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:39:33,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:39:33,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:39:33,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:39:33,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:39:33,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:39:33,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:39:33,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:39:33,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:39:33,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:39:33,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:39:33,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:39:33,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:39:33,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:39:33,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:39:33,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:39:33,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:39:33,540 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:39:33,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:39:33,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:39:33,544 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:39:33,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:39:33,545 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:39:33,545 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:39:33,545 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:39:33,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:39:33,546 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:39:33,547 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:39:33,547 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:39:33,547 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:39:33,548 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:39:33,548 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:39:33,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:39:33,549 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:39:33,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:39:33,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:39:33,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:39:33,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:39:33,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:39:33,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:39:33,550 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:39:33,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:39:33,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:39:33,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:39:33,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:39:33,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:39:33,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:39:33,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:39:33,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:39:33,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:39:33,552 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:39:33,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:39:33,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:39:33,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:39:33,553 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_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 -> 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d [2019-11-26 02:39:33,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:39:33,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:39:33,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:39:33,701 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:39:33,701 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:39:33,702 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/../../sv-benchmarks/c/pthread/sigma.i [2019-11-26 02:39:33,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/a6c663f3d/00d63b0873d74adab69fed8fbe16b141/FLAG59527d66f [2019-11-26 02:39:34,350 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:39:34,350 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/sv-benchmarks/c/pthread/sigma.i [2019-11-26 02:39:34,375 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/a6c663f3d/00d63b0873d74adab69fed8fbe16b141/FLAG59527d66f [2019-11-26 02:39:34,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/a6c663f3d/00d63b0873d74adab69fed8fbe16b141 [2019-11-26 02:39:34,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:39:34,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:39:34,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:34,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:39:34,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:39:34,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:34" (1/1) ... [2019-11-26 02:39:34,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec5dd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:34, skipping insertion in model container [2019-11-26 02:39:34,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:34" (1/1) ... [2019-11-26 02:39:34,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:39:34,838 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:39:35,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:35,342 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:39:35,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:35,539 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:39:35,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35 WrapperNode [2019-11-26 02:39:35,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:35,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:35,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:39:35,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:39:35,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:35,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:39:35,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:39:35,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:39:35,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... [2019-11-26 02:39:35,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:39:35,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:39:35,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:39:35,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:39:35,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 02:39:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:39:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:39:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:39:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:39:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:39:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:39:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:39:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-26 02:39:35,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-26 02:39:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:39:35,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:39:35,779 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 02:39:36,158 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:39:36,158 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:39:36,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:36 BoogieIcfgContainer [2019-11-26 02:39:36,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:39:36,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:39:36,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:39:36,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:39:36,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:39:34" (1/3) ... [2019-11-26 02:39:36,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c7f803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:36, skipping insertion in model container [2019-11-26 02:39:36,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:35" (2/3) ... [2019-11-26 02:39:36,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c7f803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:36, skipping insertion in model container [2019-11-26 02:39:36,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:36" (3/3) ... [2019-11-26 02:39:36,165 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-11-26 02:39:36,195 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,196 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,196 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,196 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,196 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,197 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,197 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,197 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,197 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,197 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,198 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,198 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,198 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,199 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,199 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,199 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,199 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,199 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:36,224 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:39:36,224 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:39:36,230 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:39:36,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:39:36,258 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:39:36,258 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:39:36,258 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:39:36,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:39:36,258 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:39:36,259 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:39:36,259 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:39:36,259 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:39:36,269 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 85 transitions [2019-11-26 02:39:36,788 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7898 states. [2019-11-26 02:39:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7898 states. [2019-11-26 02:39:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:39:36,803 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:36,804 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, 1, 1, 1, 1] [2019-11-26 02:39:36,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:36,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:36,811 INFO L82 PathProgramCache]: Analyzing trace with hash -937654746, now seen corresponding path program 1 times [2019-11-26 02:39:36,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:39:36,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16321379] [2019-11-26 02:39:36,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:39:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:37,073 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 02:39:37,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16321379] [2019-11-26 02:39:37,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:39:37,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:39:37,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345359745] [2019-11-26 02:39:37,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:39:37,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:39:37,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:39:37,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:39:37,097 INFO L87 Difference]: Start difference. First operand 7898 states. Second operand 2 states. [2019-11-26 02:39:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:37,230 INFO L93 Difference]: Finished difference Result 7898 states and 23969 transitions. [2019-11-26 02:39:37,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:39:37,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-11-26 02:39:37,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:37,314 INFO L225 Difference]: With dead ends: 7898 [2019-11-26 02:39:37,314 INFO L226 Difference]: Without dead ends: 5849 [2019-11-26 02:39:37,319 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:39:37,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2019-11-26 02:39:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5849. [2019-11-26 02:39:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5849 states. [2019-11-26 02:39:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 17528 transitions. [2019-11-26 02:39:37,767 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 17528 transitions. Word has length 31 [2019-11-26 02:39:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:37,768 INFO L462 AbstractCegarLoop]: Abstraction has 5849 states and 17528 transitions. [2019-11-26 02:39:37,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:39:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 17528 transitions. [2019-11-26 02:39:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:39:37,769 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:37,770 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, 1, 1, 1, 1] [2019-11-26 02:39:37,770 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash -218464121, now seen corresponding path program 1 times [2019-11-26 02:39:37,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:39:37,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470052899] [2019-11-26 02:39:37,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:39:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:37,975 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 02:39:37,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470052899] [2019-11-26 02:39:37,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:39:37,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:39:37,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620902335] [2019-11-26 02:39:37,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:39:37,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:39:37,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:39:37,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:39:37,979 INFO L87 Difference]: Start difference. First operand 5849 states and 17528 transitions. Second operand 5 states. [2019-11-26 02:39:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:38,271 INFO L93 Difference]: Finished difference Result 4683 states and 12717 transitions. [2019-11-26 02:39:38,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:39:38,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-26 02:39:38,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:38,316 INFO L225 Difference]: With dead ends: 4683 [2019-11-26 02:39:38,316 INFO L226 Difference]: Without dead ends: 4683 [2019-11-26 02:39:38,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:39:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2019-11-26 02:39:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4094. [2019-11-26 02:39:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4094 states. [2019-11-26 02:39:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 11323 transitions. [2019-11-26 02:39:38,458 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 11323 transitions. Word has length 31 [2019-11-26 02:39:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:38,460 INFO L462 AbstractCegarLoop]: Abstraction has 4094 states and 11323 transitions. [2019-11-26 02:39:38,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:39:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 11323 transitions. [2019-11-26 02:39:38,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-26 02:39:38,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:38,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:38,473 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:38,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:38,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1473441971, now seen corresponding path program 1 times [2019-11-26 02:39:38,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:39:38,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496419601] [2019-11-26 02:39:38,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:39:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:39:38,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496419601] [2019-11-26 02:39:38,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877325598] [2019-11-26 02:39:38,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 02:39:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:38,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:39:38,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:39,073 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:39,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [908800544] [2019-11-26 02:39:39,192 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: UnsupportedOperationException [2019-11-26 02:39:39,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:39:39,401 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 02:39:39,405 INFO L168 Benchmark]: Toolchain (without parser) took 4628.80 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 283.6 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -110.0 MB). Peak memory consumption was 173.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:39,406 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 02:39:39,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -123.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:39,408 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.35 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 02:39:39,408 INFO L168 Benchmark]: Boogie Preprocessor took 61.55 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 02:39:39,409 INFO L168 Benchmark]: RCFGBuilder took 464.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:39,410 INFO L168 Benchmark]: TraceAbstraction took 3243.73 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -19.8 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:39,413 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 763.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -123.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 464.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3243.73 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.2 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -19.8 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$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 02:39:41,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:39:41,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:39:41,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:39:41,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:39:41,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:39:41,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:39:41,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:39:41,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:39:41,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:39:41,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:39:41,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:39:41,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:39:41,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:39:41,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:39:41,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:39:41,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:39:41,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:39:41,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:39:41,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:39:41,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:39:41,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:39:41,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:39:41,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:39:41,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:39:41,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:39:41,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:39:41,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:39:41,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:39:41,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:39:41,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:39:41,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:39:41,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:39:41,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:39:41,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:39:41,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:39:41,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:39:41,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:39:41,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:39:41,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:39:41,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:39:41,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:39:41,474 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:39:41,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:39:41,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:39:41,484 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:39:41,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:39:41,485 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:39:41,485 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:39:41,485 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:39:41,485 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:39:41,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:39:41,486 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:39:41,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:39:41,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:39:41,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:39:41,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:39:41,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:39:41,488 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:39:41,489 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:39:41,489 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:39:41,489 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:39:41,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:39:41,490 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:39:41,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:39:41,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:39:41,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:39:41,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:39:41,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:39:41,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:39:41,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:39:41,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:39:41,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:39:41,493 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:39:41,493 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:39:41,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:39:41,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:39:41,494 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_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 -> 0213c2498f4ad9d8dd3bd44119e09066ed0e9f1d [2019-11-26 02:39:41,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:39:41,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:39:41,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:39:41,824 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:39:41,824 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:39:41,825 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/../../sv-benchmarks/c/pthread/sigma.i [2019-11-26 02:39:41,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/6eb76b2b1/24bd7355a99f4f09b47efb1790602c35/FLAG3b37a7f83 [2019-11-26 02:39:42,350 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:39:42,351 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/sv-benchmarks/c/pthread/sigma.i [2019-11-26 02:39:42,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/6eb76b2b1/24bd7355a99f4f09b47efb1790602c35/FLAG3b37a7f83 [2019-11-26 02:39:42,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/data/6eb76b2b1/24bd7355a99f4f09b47efb1790602c35 [2019-11-26 02:39:42,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:39:42,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:39:42,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:42,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:39:42,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:39:42,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:42" (1/1) ... [2019-11-26 02:39:42,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c6dc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:42, skipping insertion in model container [2019-11-26 02:39:42,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:42" (1/1) ... [2019-11-26 02:39:42,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:39:42,730 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:39:43,376 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:39:43,377 INFO L968 CHandler]: at location: C: (pthread_t *)malloc(sizeof(pthread_t) * SIGMA) [1102] [2019-11-26 02:39:43,377 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:39:43,378 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:39:43,378 INFO L968 CHandler]: at location: C: (int *)malloc(sizeof(int) * SIGMA) [1103] [2019-11-26 02:39:43,379 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:39:43,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:43,403 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-26 02:39:43,418 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:39:43,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:43,488 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:39:43,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:43,717 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:39:43,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43 WrapperNode [2019-11-26 02:39:43,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:43,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:43,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:39:43,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:39:43,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:43,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:39:43,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:39:43,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:39:43,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... [2019-11-26 02:39:43,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:39:43,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:39:43,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:39:43,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:39:43,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 02:39:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:39:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:39:43,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:39:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:39:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:39:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:39:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:39:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-11-26 02:39:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-11-26 02:39:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:39:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:39:43,892 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 02:39:44,386 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:39:44,387 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:39:44,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:44 BoogieIcfgContainer [2019-11-26 02:39:44,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:39:44,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:39:44,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:39:44,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:39:44,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:39:42" (1/3) ... [2019-11-26 02:39:44,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4078269a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:44, skipping insertion in model container [2019-11-26 02:39:44,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:43" (2/3) ... [2019-11-26 02:39:44,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4078269a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:44, skipping insertion in model container [2019-11-26 02:39:44,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:44" (3/3) ... [2019-11-26 02:39:44,397 INFO L109 eAbstractionObserver]: Analyzing ICFG sigma.i [2019-11-26 02:39:44,435 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,435 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,436 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,436 WARN L315 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,437 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,437 WARN L315 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,437 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,437 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,438 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,438 WARN L315 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,438 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,439 WARN L315 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,439 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,439 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,440 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,444 WARN L315 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,445 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,445 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:39:44,466 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:39:44,466 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:39:44,472 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:39:44,481 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:39:44,499 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:39:44,499 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:39:44,499 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:39:44,500 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:39:44,500 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:39:44,500 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:39:44,500 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:39:44,501 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:39:44,511 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 86 transitions [2019-11-26 02:39:45,128 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7899 states. [2019-11-26 02:39:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states. [2019-11-26 02:39:45,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:39:45,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:45,142 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, 1, 1, 1, 1, 1] [2019-11-26 02:39:45,142 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:45,149 INFO L82 PathProgramCache]: Analyzing trace with hash -129320810, now seen corresponding path program 1 times [2019-11-26 02:39:45,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:39:45,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [418860489] [2019-11-26 02:39:45,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 02:39:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:45,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:39:45,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:45,365 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 02:39:45,366 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:45,377 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 02:39:45,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418860489] [2019-11-26 02:39:45,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:39:45,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:39:45,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782182115] [2019-11-26 02:39:45,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:39:45,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:39:45,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:39:45,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:39:45,405 INFO L87 Difference]: Start difference. First operand 7899 states. Second operand 2 states. [2019-11-26 02:39:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:45,553 INFO L93 Difference]: Finished difference Result 7899 states and 23970 transitions. [2019-11-26 02:39:45,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:39:45,555 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-11-26 02:39:45,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:45,638 INFO L225 Difference]: With dead ends: 7899 [2019-11-26 02:39:45,638 INFO L226 Difference]: Without dead ends: 5850 [2019-11-26 02:39:45,640 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:39:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2019-11-26 02:39:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5850. [2019-11-26 02:39:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5850 states. [2019-11-26 02:39:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5850 states to 5850 states and 17529 transitions. [2019-11-26 02:39:46,141 INFO L78 Accepts]: Start accepts. Automaton has 5850 states and 17529 transitions. Word has length 32 [2019-11-26 02:39:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:46,142 INFO L462 AbstractCegarLoop]: Abstraction has 5850 states and 17529 transitions. [2019-11-26 02:39:46,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:39:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5850 states and 17529 transitions. [2019-11-26 02:39:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-26 02:39:46,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:46,144 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, 1, 1, 1, 1, 1] [2019-11-26 02:39:46,347 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:46,348 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:46,349 INFO L82 PathProgramCache]: Analyzing trace with hash 589869815, now seen corresponding path program 1 times [2019-11-26 02:39:46,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:39:46,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1308745783] [2019-11-26 02:39:46,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 02:39:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:46,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:39:46,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:46,554 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 02:39:46,554 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:46,584 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 02:39:46,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1308745783] [2019-11-26 02:39:46,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:39:46,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:39:46,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388494394] [2019-11-26 02:39:46,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:39:46,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:39:46,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:39:46,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:39:46,597 INFO L87 Difference]: Start difference. First operand 5850 states and 17529 transitions. Second operand 6 states. [2019-11-26 02:39:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:46,851 INFO L93 Difference]: Finished difference Result 4138 states and 11380 transitions. [2019-11-26 02:39:46,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:39:46,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-26 02:39:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:46,885 INFO L225 Difference]: With dead ends: 4138 [2019-11-26 02:39:46,885 INFO L226 Difference]: Without dead ends: 4138 [2019-11-26 02:39:46,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:39:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2019-11-26 02:39:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 4004. [2019-11-26 02:39:47,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4004 states. [2019-11-26 02:39:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 11101 transitions. [2019-11-26 02:39:47,030 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 11101 transitions. Word has length 32 [2019-11-26 02:39:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:47,031 INFO L462 AbstractCegarLoop]: Abstraction has 4004 states and 11101 transitions. [2019-11-26 02:39:47,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:39:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 11101 transitions. [2019-11-26 02:39:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-26 02:39:47,038 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:47,038 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, 1, 1, 1, 1, 1, 1, 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 02:39:47,239 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:47,239 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:47,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:47,239 INFO L82 PathProgramCache]: Analyzing trace with hash -759591351, now seen corresponding path program 1 times [2019-11-26 02:39:47,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:39:47,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [536373976] [2019-11-26 02:39:47,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/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 02:39:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:47,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:39:47,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:39:47,525 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:39:47,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [536373976] [2019-11-26 02:39:47,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752362726] [2019-11-26 02:39:47,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:39:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:47,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:39:47,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:47,785 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:47,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:39:47,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 13 [2019-11-26 02:39:47,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972959678] [2019-11-26 02:39:47,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:39:47,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:39:47,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:39:47,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:39:47,850 INFO L87 Difference]: Start difference. First operand 4004 states and 11101 transitions. Second operand 8 states. [2019-11-26 02:39:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:48,157 INFO L93 Difference]: Finished difference Result 4684 states and 12718 transitions. [2019-11-26 02:39:48,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:39:48,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-11-26 02:39:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:48,193 INFO L225 Difference]: With dead ends: 4684 [2019-11-26 02:39:48,194 INFO L226 Difference]: Without dead ends: 4684 [2019-11-26 02:39:48,195 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:39:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2019-11-26 02:39:48,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 4095. [2019-11-26 02:39:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4095 states. [2019-11-26 02:39:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 11324 transitions. [2019-11-26 02:39:48,347 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 11324 transitions. Word has length 57 [2019-11-26 02:39:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:48,349 INFO L462 AbstractCegarLoop]: Abstraction has 4095 states and 11324 transitions. [2019-11-26 02:39:48,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:39:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 11324 transitions. [2019-11-26 02:39:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-26 02:39:48,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:48,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:48,775 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:39:48,775 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash 115640284, now seen corresponding path program 1 times [2019-11-26 02:39:48,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:39:48,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [948577113] [2019-11-26 02:39:48,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:48,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:39:48,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:49,032 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:49,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [948577113] [2019-11-26 02:39:49,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396965318] [2019-11-26 02:39:49,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:39:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:49,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:39:49,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:49,265 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:49,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:39:49,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 10 [2019-11-26 02:39:49,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539526741] [2019-11-26 02:39:49,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:39:49,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:39:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:39:49,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:39:49,292 INFO L87 Difference]: Start difference. First operand 4095 states and 11324 transitions. Second operand 10 states. [2019-11-26 02:39:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:49,816 INFO L93 Difference]: Finished difference Result 4035 states and 11146 transitions. [2019-11-26 02:39:49,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:39:49,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2019-11-26 02:39:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:49,856 INFO L225 Difference]: With dead ends: 4035 [2019-11-26 02:39:49,856 INFO L226 Difference]: Without dead ends: 4035 [2019-11-26 02:39:49,857 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:39:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2019-11-26 02:39:50,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 4035. [2019-11-26 02:39:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4035 states. [2019-11-26 02:39:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 11146 transitions. [2019-11-26 02:39:50,055 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 11146 transitions. Word has length 64 [2019-11-26 02:39:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:50,056 INFO L462 AbstractCegarLoop]: Abstraction has 4035 states and 11146 transitions. [2019-11-26 02:39:50,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:39:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 11146 transitions. [2019-11-26 02:39:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-26 02:39:50,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:50,066 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:50,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:39:50,470 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:39:50,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:50,470 INFO L82 PathProgramCache]: Analyzing trace with hash -536709238, now seen corresponding path program 1 times [2019-11-26 02:39:50,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:39:50,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1224361585] [2019-11-26 02:39:50,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:50,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:39:50,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:50,852 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:39:51,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1224361585] [2019-11-26 02:39:51,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170416174] [2019-11-26 02:39:51,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:39:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:51,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:39:51,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-26 02:39:51,277 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-26 02:39:51,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:39:51,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6, 6] total 21 [2019-11-26 02:39:51,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408892649] [2019-11-26 02:39:51,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-26 02:39:51,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:39:51,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-26 02:39:51,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2019-11-26 02:39:51,350 INFO L87 Difference]: Start difference. First operand 4035 states and 11146 transitions. Second operand 21 states. [2019-11-26 02:39:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:51,775 INFO L93 Difference]: Finished difference Result 1138 states and 3341 transitions. [2019-11-26 02:39:51,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-26 02:39:51,776 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 88 [2019-11-26 02:39:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:51,776 INFO L225 Difference]: With dead ends: 1138 [2019-11-26 02:39:51,777 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:39:51,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2019-11-26 02:39:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:39:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:39:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:39:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:39:51,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2019-11-26 02:39:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:51,779 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:39:51,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-26 02:39:51,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:39:51,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:39:52,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:52,187 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:39:52,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:39:52 BasicIcfg [2019-11-26 02:39:52,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:39:52,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:39:52,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:39:52,190 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:39:52,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:44" (3/4) ... [2019-11-26 02:39:52,193 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:39:52,199 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2019-11-26 02:39:52,204 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 02:39:52,205 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:39:52,205 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:39:52,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f9ae219f-0e19-4ce2-86a6-dca7dfac3f55/bin/utaipan/witness.graphml [2019-11-26 02:39:52,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:39:52,259 INFO L168 Benchmark]: Toolchain (without parser) took 9619.10 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 366.0 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -173.6 MB). Peak memory consumption was 192.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:52,260 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:39:52,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1075.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -123.4 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:52,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.32 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 02:39:52,261 INFO L168 Benchmark]: Boogie Preprocessor took 37.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:52,268 INFO L168 Benchmark]: RCFGBuilder took 564.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:52,268 INFO L168 Benchmark]: TraceAbstraction took 7799.77 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 204.5 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -97.0 MB). Peak memory consumption was 107.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:52,269 INFO L168 Benchmark]: Witness Printer took 67.96 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:39:52,272 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 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1075.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -123.4 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 564.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7799.77 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 204.5 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -97.0 MB). Peak memory consumption was 107.4 MB. Max. memory is 11.5 GB. * Witness Printer took 67.96 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1089]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Result: SAFE, OverallTime: 7.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 431 SDtfs, 1231 SDslu, 1368 SDs, 0 SdLazy, 372 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 962 GetRequests, 906 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7899occurred 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: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 723 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 482 NumberOfCodeBlocks, 482 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 948 ConstructedInterpolants, 0 QuantifiedInterpolants, 185702 SizeOfPredicates, 29 NumberOfNonLiveVariables, 890 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 98/184 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 correct! Received shutdown request...