./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:36:15,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:36:15,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:36:15,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:36:15,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:36:15,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:36:15,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:36:15,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:36:15,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:36:15,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:36:15,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:36:15,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:36:15,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:36:15,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:36:15,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:36:15,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:36:15,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:36:15,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:36:15,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:36:15,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:36:15,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:36:15,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:36:15,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:36:15,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:36:15,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:36:15,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:36:15,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:36:15,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:36:15,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:36:15,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:36:15,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:36:15,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:36:15,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:36:15,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:36:15,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:36:15,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:36:15,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:36:15,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:36:15,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:36:15,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:36:15,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:36:15,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:36:15,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:36:15,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:36:15,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:36:15,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:36:15,515 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:36:15,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:36:15,516 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:36:15,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:36:15,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:36:15,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:36:15,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:36:15,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:36:15,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:36:15,517 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:36:15,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:36:15,517 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:36:15,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:36:15,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:36:15,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:36:15,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:36:15,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:36:15,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:36:15,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:36:15,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:36:15,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:36:15,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:36:15,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:36:15,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:36:15,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer 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 -> Automizer 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 -> 1633e43e3f340ce4ae371cafc3d1ea0a9dad5739 [2019-11-20 04:36:15,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:36:15,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:36:15,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:36:15,696 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:36:15,697 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:36:15,697 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum05.i [2019-11-20 04:36:15,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/data/b2e0e9c14/107739c993de433f9585c8ddaef71d4b/FLAG4d45a5848 [2019-11-20 04:36:16,144 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:36:16,144 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/sv-benchmarks/c/reducercommutativity/rangesum05.i [2019-11-20 04:36:16,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/data/b2e0e9c14/107739c993de433f9585c8ddaef71d4b/FLAG4d45a5848 [2019-11-20 04:36:16,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/data/b2e0e9c14/107739c993de433f9585c8ddaef71d4b [2019-11-20 04:36:16,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:36:16,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:36:16,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:36:16,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:36:16,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:36:16,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48078027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16, skipping insertion in model container [2019-11-20 04:36:16,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,569 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:36:16,590 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:36:16,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:36:16,886 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:36:16,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:36:16,922 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:36:16,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16 WrapperNode [2019-11-20 04:36:16,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:36:16,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:36:16,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:36:16,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:36:16,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:36:16,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:36:16,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:36:16,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:36:16,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:16,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:17,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... [2019-11-20 04:36:17,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:36:17,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:36:17,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:36:17,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:36:17,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/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 [2019-11-20 04:36:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 04:36:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:36:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:36:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 04:36:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 04:36:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:36:17,504 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:36:17,504 INFO L285 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-20 04:36:17,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:36:17 BoogieIcfgContainer [2019-11-20 04:36:17,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:36:17,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:36:17,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:36:17,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:36:17,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:36:16" (1/3) ... [2019-11-20 04:36:17,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a5a466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:36:17, skipping insertion in model container [2019-11-20 04:36:17,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:36:16" (2/3) ... [2019-11-20 04:36:17,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a5a466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:36:17, skipping insertion in model container [2019-11-20 04:36:17,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:36:17" (3/3) ... [2019-11-20 04:36:17,514 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2019-11-20 04:36:17,523 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:36:17,529 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:36:17,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:36:17,558 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:36:17,558 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:36:17,558 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:36:17,558 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:36:17,558 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:36:17,559 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:36:17,559 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:36:17,559 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:36:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-20 04:36:17,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 04:36:17,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:17,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:17,576 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash -919167012, now seen corresponding path program 1 times [2019-11-20 04:36:17,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:17,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165901532] [2019-11-20 04:36:17,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:17,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165901532] [2019-11-20 04:36:17,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:17,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 04:36:17,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425046698] [2019-11-20 04:36:17,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 04:36:17,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 04:36:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:36:17,706 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-20 04:36:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:17,720 INFO L93 Difference]: Finished difference Result 56 states and 86 transitions. [2019-11-20 04:36:17,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:36:17,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-20 04:36:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:17,727 INFO L225 Difference]: With dead ends: 56 [2019-11-20 04:36:17,727 INFO L226 Difference]: Without dead ends: 26 [2019-11-20 04:36:17,730 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 [2019-11-20 04:36:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-20 04:36:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-20 04:36:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 04:36:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-20 04:36:17,758 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 17 [2019-11-20 04:36:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:17,758 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-20 04:36:17,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 04:36:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-20 04:36:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 04:36:17,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:17,759 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:17,759 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:17,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:17,759 INFO L82 PathProgramCache]: Analyzing trace with hash 164788593, now seen corresponding path program 1 times [2019-11-20 04:36:17,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:17,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780267522] [2019-11-20 04:36:17,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:17,772 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:17,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405527302] [2019-11-20 04:36:17,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/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 [2019-11-20 04:36:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:17,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:36:17,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:36:17,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780267522] [2019-11-20 04:36:17,900 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:17,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405527302] [2019-11-20 04:36:17,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:17,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 04:36:17,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400275459] [2019-11-20 04:36:17,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:36:17,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:17,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:36:17,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:17,903 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 3 states. [2019-11-20 04:36:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:17,920 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2019-11-20 04:36:17,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:36:17,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-20 04:36:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:17,922 INFO L225 Difference]: With dead ends: 50 [2019-11-20 04:36:17,922 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 04:36:17,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 04:36:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-20 04:36:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 04:36:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-20 04:36:17,928 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 17 [2019-11-20 04:36:17,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:17,928 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-20 04:36:17,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:36:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-20 04:36:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 04:36:17,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:17,929 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:18,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:18,135 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1403287377, now seen corresponding path program 1 times [2019-11-20 04:36:18,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:18,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880822483] [2019-11-20 04:36:18,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:18,176 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:18,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535257965] [2019-11-20 04:36:18,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:18,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:36:18,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 04:36:18,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880822483] [2019-11-20 04:36:18,290 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:18,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535257965] [2019-11-20 04:36:18,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:18,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 04:36:18,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275275119] [2019-11-20 04:36:18,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:36:18,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:18,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:36:18,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:18,291 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 3 states. [2019-11-20 04:36:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:18,348 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2019-11-20 04:36:18,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:36:18,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-20 04:36:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:18,350 INFO L225 Difference]: With dead ends: 57 [2019-11-20 04:36:18,350 INFO L226 Difference]: Without dead ends: 36 [2019-11-20 04:36:18,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-20 04:36:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-11-20 04:36:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 04:36:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-11-20 04:36:18,356 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 19 [2019-11-20 04:36:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:18,356 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-20 04:36:18,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:36:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2019-11-20 04:36:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 04:36:18,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:18,357 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] [2019-11-20 04:36:18,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:18,558 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1132417868, now seen corresponding path program 1 times [2019-11-20 04:36:18,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:18,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951554118] [2019-11-20 04:36:18,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:18,567 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:18,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184004851] [2019-11-20 04:36:18,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:18,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:36:18,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 04:36:18,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951554118] [2019-11-20 04:36:18,656 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:18,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184004851] [2019-11-20 04:36:18,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:18,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 04:36:18,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20139] [2019-11-20 04:36:18,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:36:18,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:18,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:36:18,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:18,658 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 3 states. [2019-11-20 04:36:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:18,772 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2019-11-20 04:36:18,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:36:18,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-20 04:36:18,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:18,773 INFO L225 Difference]: With dead ends: 75 [2019-11-20 04:36:18,773 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 04:36:18,774 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 04:36:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2019-11-20 04:36:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-20 04:36:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2019-11-20 04:36:18,781 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 28 [2019-11-20 04:36:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:18,781 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2019-11-20 04:36:18,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:36:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2019-11-20 04:36:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 04:36:18,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:18,783 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] [2019-11-20 04:36:18,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:18,986 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:18,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1168464304, now seen corresponding path program 1 times [2019-11-20 04:36:18,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:18,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201017666] [2019-11-20 04:36:18,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 04:36:19,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201017666] [2019-11-20 04:36:19,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:19,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 04:36:19,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745802144] [2019-11-20 04:36:19,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:36:19,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:19,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:36:19,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:19,052 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand 4 states. [2019-11-20 04:36:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:19,132 INFO L93 Difference]: Finished difference Result 85 states and 118 transitions. [2019-11-20 04:36:19,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:36:19,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-11-20 04:36:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:19,135 INFO L225 Difference]: With dead ends: 85 [2019-11-20 04:36:19,135 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 04:36:19,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 04:36:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-11-20 04:36:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-20 04:36:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2019-11-20 04:36:19,141 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 28 [2019-11-20 04:36:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:19,141 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2019-11-20 04:36:19,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:36:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2019-11-20 04:36:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 04:36:19,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:19,145 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:19,146 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:19,149 INFO L82 PathProgramCache]: Analyzing trace with hash -483510003, now seen corresponding path program 1 times [2019-11-20 04:36:19,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:19,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9946561] [2019-11-20 04:36:19,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:19,167 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:19,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087928151] [2019-11-20 04:36:19,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/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 [2019-11-20 04:36:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:19,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:36:19,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 04:36:19,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9946561] [2019-11-20 04:36:19,264 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:19,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087928151] [2019-11-20 04:36:19,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:19,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 04:36:19,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971755539] [2019-11-20 04:36:19,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:36:19,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:19,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:36:19,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:19,266 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 3 states. [2019-11-20 04:36:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:19,282 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2019-11-20 04:36:19,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:36:19,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-11-20 04:36:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:19,287 INFO L225 Difference]: With dead ends: 54 [2019-11-20 04:36:19,287 INFO L226 Difference]: Without dead ends: 41 [2019-11-20 04:36:19,287 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:36:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-20 04:36:19,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-20 04:36:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 04:36:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2019-11-20 04:36:19,292 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 37 [2019-11-20 04:36:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:19,293 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2019-11-20 04:36:19,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:36:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2019-11-20 04:36:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-20 04:36:19,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:19,294 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:19,496 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:19,497 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:19,497 INFO L82 PathProgramCache]: Analyzing trace with hash -623311861, now seen corresponding path program 1 times [2019-11-20 04:36:19,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:19,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462814736] [2019-11-20 04:36:19,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:19,507 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:19,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184790505] [2019-11-20 04:36:19,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:19,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:36:19,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 04:36:19,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462814736] [2019-11-20 04:36:19,602 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:19,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184790505] [2019-11-20 04:36:19,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:19,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-20 04:36:19,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553930433] [2019-11-20 04:36:19,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:36:19,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:36:19,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:19,605 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 4 states. [2019-11-20 04:36:19,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:19,630 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2019-11-20 04:36:19,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:36:19,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-11-20 04:36:19,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:19,633 INFO L225 Difference]: With dead ends: 78 [2019-11-20 04:36:19,633 INFO L226 Difference]: Without dead ends: 43 [2019-11-20 04:36:19,633 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-20 04:36:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-20 04:36:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 04:36:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2019-11-20 04:36:19,643 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2019-11-20 04:36:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:19,644 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2019-11-20 04:36:19,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:36:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2019-11-20 04:36:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 04:36:19,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:19,649 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:19,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:19,850 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash -526389047, now seen corresponding path program 2 times [2019-11-20 04:36:19,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:19,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117340465] [2019-11-20 04:36:19,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:19,865 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:19,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059314746] [2019-11-20 04:36:19,865 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/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 [2019-11-20 04:36:19,945 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:36:19,945 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:19,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:36:19,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-20 04:36:19,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117340465] [2019-11-20 04:36:19,964 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:19,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059314746] [2019-11-20 04:36:19,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:19,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-20 04:36:19,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442003637] [2019-11-20 04:36:19,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:36:19,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:19,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:36:19,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:19,966 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2019-11-20 04:36:20,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:20,037 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2019-11-20 04:36:20,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:36:20,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2019-11-20 04:36:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:20,038 INFO L225 Difference]: With dead ends: 86 [2019-11-20 04:36:20,038 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 04:36:20,039 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 04:36:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2019-11-20 04:36:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-20 04:36:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2019-11-20 04:36:20,045 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2019-11-20 04:36:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:20,045 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2019-11-20 04:36:20,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:36:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2019-11-20 04:36:20,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 04:36:20,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:20,047 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:20,253 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:20,253 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:20,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:20,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1393104750, now seen corresponding path program 3 times [2019-11-20 04:36:20,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:20,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557614316] [2019-11-20 04:36:20,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:20,262 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:20,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208410798] [2019-11-20 04:36:20,262 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:20,327 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-20 04:36:20,327 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:20,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:36:20,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-20 04:36:20,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557614316] [2019-11-20 04:36:20,370 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:20,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208410798] [2019-11-20 04:36:20,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:20,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-20 04:36:20,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552965868] [2019-11-20 04:36:20,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:36:20,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:20,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:36:20,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:20,372 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 4 states. [2019-11-20 04:36:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:20,398 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2019-11-20 04:36:20,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:36:20,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2019-11-20 04:36:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:20,402 INFO L225 Difference]: With dead ends: 70 [2019-11-20 04:36:20,402 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 04:36:20,402 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 04:36:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2019-11-20 04:36:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-20 04:36:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2019-11-20 04:36:20,418 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 50 [2019-11-20 04:36:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:20,420 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2019-11-20 04:36:20,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:36:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2019-11-20 04:36:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-20 04:36:20,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:20,422 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:20,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:20,625 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1656359148, now seen corresponding path program 4 times [2019-11-20 04:36:20,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:20,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402152201] [2019-11-20 04:36:20,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:20,638 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:20,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187296696] [2019-11-20 04:36:20,649 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/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 [2019-11-20 04:36:20,702 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 04:36:20,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:20,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:36:20,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-20 04:36:20,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402152201] [2019-11-20 04:36:20,730 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:20,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187296696] [2019-11-20 04:36:20,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:20,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-20 04:36:20,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602144143] [2019-11-20 04:36:20,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:36:20,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:20,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:36:20,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:20,732 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 5 states. [2019-11-20 04:36:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:20,796 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2019-11-20 04:36:20,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:36:20,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-20 04:36:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:20,797 INFO L225 Difference]: With dead ends: 102 [2019-11-20 04:36:20,797 INFO L226 Difference]: Without dead ends: 62 [2019-11-20 04:36:20,798 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-20 04:36:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2019-11-20 04:36:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-20 04:36:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2019-11-20 04:36:20,804 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 52 [2019-11-20 04:36:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:20,804 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2019-11-20 04:36:20,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:36:20,804 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2019-11-20 04:36:20,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-20 04:36:20,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:20,805 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:21,006 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:21,006 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:21,006 INFO L82 PathProgramCache]: Analyzing trace with hash -2133276057, now seen corresponding path program 5 times [2019-11-20 04:36:21,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:21,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668902199] [2019-11-20 04:36:21,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:21,014 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:21,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090864779] [2019-11-20 04:36:21,014 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:21,082 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-11-20 04:36:21,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:21,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:36:21,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-11-20 04:36:21,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668902199] [2019-11-20 04:36:21,107 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:21,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090864779] [2019-11-20 04:36:21,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:36:21,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 04:36:21,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123079923] [2019-11-20 04:36:21,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:36:21,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:21,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:36:21,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:21,108 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 4 states. [2019-11-20 04:36:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:21,158 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2019-11-20 04:36:21,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:36:21,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2019-11-20 04:36:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:21,160 INFO L225 Difference]: With dead ends: 111 [2019-11-20 04:36:21,161 INFO L226 Difference]: Without dead ends: 71 [2019-11-20 04:36:21,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:36:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-20 04:36:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2019-11-20 04:36:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-20 04:36:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2019-11-20 04:36:21,170 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 61 [2019-11-20 04:36:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:21,171 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2019-11-20 04:36:21,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:36:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2019-11-20 04:36:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-20 04:36:21,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:21,172 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:21,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:21,375 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:21,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2021142629, now seen corresponding path program 1 times [2019-11-20 04:36:21,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:21,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845050950] [2019-11-20 04:36:21,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:21,386 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:21,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181277337] [2019-11-20 04:36:21,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:36:21,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:36:21,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-20 04:36:21,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845050950] [2019-11-20 04:36:21,473 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:21,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181277337] [2019-11-20 04:36:21,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:21,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-20 04:36:21,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513987302] [2019-11-20 04:36:21,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:36:21,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:21,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:36:21,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:21,474 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 5 states. [2019-11-20 04:36:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:21,495 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2019-11-20 04:36:21,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:36:21,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2019-11-20 04:36:21,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:21,497 INFO L225 Difference]: With dead ends: 120 [2019-11-20 04:36:21,497 INFO L226 Difference]: Without dead ends: 65 [2019-11-20 04:36:21,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-20 04:36:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-11-20 04:36:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-20 04:36:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2019-11-20 04:36:21,511 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 61 [2019-11-20 04:36:21,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:21,511 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2019-11-20 04:36:21,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:36:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2019-11-20 04:36:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-20 04:36:21,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:21,514 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:21,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:21,718 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:21,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 265673379, now seen corresponding path program 2 times [2019-11-20 04:36:21,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:21,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450604978] [2019-11-20 04:36:21,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:21,730 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:21,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139840522] [2019-11-20 04:36:21,730 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:21,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:36:21,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:21,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:36:21,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-20 04:36:21,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450604978] [2019-11-20 04:36:21,860 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:21,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139840522] [2019-11-20 04:36:21,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:21,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 04:36:21,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125439391] [2019-11-20 04:36:21,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:36:21,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:21,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:36:21,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:36:21,863 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 6 states. [2019-11-20 04:36:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:21,885 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2019-11-20 04:36:21,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:36:21,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2019-11-20 04:36:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:21,887 INFO L225 Difference]: With dead ends: 122 [2019-11-20 04:36:21,887 INFO L226 Difference]: Without dead ends: 67 [2019-11-20 04:36:21,888 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:36:21,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-20 04:36:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2019-11-20 04:36:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-20 04:36:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2019-11-20 04:36:21,893 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 63 [2019-11-20 04:36:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:21,893 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2019-11-20 04:36:21,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:36:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2019-11-20 04:36:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-20 04:36:21,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:21,895 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:22,098 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:22,098 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:22,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1181871457, now seen corresponding path program 3 times [2019-11-20 04:36:22,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:22,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795222216] [2019-11-20 04:36:22,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:22,128 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:22,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249731062] [2019-11-20 04:36:22,139 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:22,212 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 04:36:22,212 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:22,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:36:22,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-11-20 04:36:22,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795222216] [2019-11-20 04:36:22,244 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:22,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249731062] [2019-11-20 04:36:22,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:22,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-20 04:36:22,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849667391] [2019-11-20 04:36:22,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:36:22,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:22,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:36:22,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:22,245 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 5 states. [2019-11-20 04:36:22,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:22,265 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2019-11-20 04:36:22,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:36:22,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-11-20 04:36:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:22,266 INFO L225 Difference]: With dead ends: 88 [2019-11-20 04:36:22,266 INFO L226 Difference]: Without dead ends: 69 [2019-11-20 04:36:22,266 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:36:22,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-20 04:36:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2019-11-20 04:36:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-20 04:36:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2019-11-20 04:36:22,275 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 65 [2019-11-20 04:36:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:22,275 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2019-11-20 04:36:22,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:36:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2019-11-20 04:36:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 04:36:22,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:22,277 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-11-20 04:36:22,480 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:22,481 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:22,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1302328097, now seen corresponding path program 4 times [2019-11-20 04:36:22,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:22,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522201592] [2019-11-20 04:36:22,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:22,492 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:22,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631975018] [2019-11-20 04:36:22,492 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:22,549 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 04:36:22,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:22,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:36:22,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-11-20 04:36:22,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522201592] [2019-11-20 04:36:22,603 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:22,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631975018] [2019-11-20 04:36:22,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:22,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-20 04:36:22,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17644317] [2019-11-20 04:36:22,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 04:36:22,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:22,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 04:36:22,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:36:22,605 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 7 states. [2019-11-20 04:36:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:22,698 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2019-11-20 04:36:22,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:36:22,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2019-11-20 04:36:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:22,699 INFO L225 Difference]: With dead ends: 120 [2019-11-20 04:36:22,699 INFO L226 Difference]: Without dead ends: 77 [2019-11-20 04:36:22,700 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:36:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-20 04:36:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-11-20 04:36:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-20 04:36:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2019-11-20 04:36:22,705 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 67 [2019-11-20 04:36:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:22,705 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2019-11-20 04:36:22,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 04:36:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2019-11-20 04:36:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-20 04:36:22,706 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:22,706 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:22,906 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:22,906 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:22,907 INFO L82 PathProgramCache]: Analyzing trace with hash -153484414, now seen corresponding path program 5 times [2019-11-20 04:36:22,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:22,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395625320] [2019-11-20 04:36:22,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:22,918 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:22,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313682914] [2019-11-20 04:36:22,918 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:23,001 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 04:36:23,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:23,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:36:23,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-11-20 04:36:23,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395625320] [2019-11-20 04:36:23,043 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:23,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313682914] [2019-11-20 04:36:23,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:23,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-20 04:36:23,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735775517] [2019-11-20 04:36:23,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 04:36:23,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:23,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 04:36:23,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:36:23,044 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 7 states. [2019-11-20 04:36:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:23,074 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2019-11-20 04:36:23,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:36:23,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2019-11-20 04:36:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:23,076 INFO L225 Difference]: With dead ends: 145 [2019-11-20 04:36:23,076 INFO L226 Difference]: Without dead ends: 79 [2019-11-20 04:36:23,077 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:36:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-20 04:36:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2019-11-20 04:36:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-20 04:36:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2019-11-20 04:36:23,092 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 76 [2019-11-20 04:36:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:23,092 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2019-11-20 04:36:23,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 04:36:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2019-11-20 04:36:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-20 04:36:23,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:23,093 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:23,299 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:23,299 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:23,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1735993980, now seen corresponding path program 6 times [2019-11-20 04:36:23,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:23,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152145856] [2019-11-20 04:36:23,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:23,311 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:23,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891719877] [2019-11-20 04:36:23,326 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:42,469 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-11-20 04:36:42,469 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:36:42,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:36:42,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:36:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-11-20 04:36:42,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152145856] [2019-11-20 04:36:42,496 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 04:36:42,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891719877] [2019-11-20 04:36:42,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-20 04:36:42,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-20 04:36:42,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701462967] [2019-11-20 04:36:42,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:36:42,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:36:42,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:36:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:36:42,500 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 6 states. [2019-11-20 04:36:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:36:42,525 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2019-11-20 04:36:42,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:36:42,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2019-11-20 04:36:42,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:36:42,526 INFO L225 Difference]: With dead ends: 103 [2019-11-20 04:36:42,526 INFO L226 Difference]: Without dead ends: 81 [2019-11-20 04:36:42,526 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:36:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-20 04:36:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2019-11-20 04:36:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-20 04:36:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2019-11-20 04:36:42,532 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 78 [2019-11-20 04:36:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:36:42,532 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2019-11-20 04:36:42,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:36:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2019-11-20 04:36:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-20 04:36:42,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:36:42,533 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:36:42,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:42,734 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:36:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:36:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1345801862, now seen corresponding path program 7 times [2019-11-20 04:36:42,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:36:42,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418779517] [2019-11-20 04:36:42,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:36:42,743 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 04:36:42,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416776957] [2019-11-20 04:36:42,743 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:36:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:36:43,144 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:36:43,144 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:36:43,346 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:36:43,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:36:43 BoogieIcfgContainer [2019-11-20 04:36:43,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:36:43,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:36:43,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:36:43,414 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:36:43,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:36:17" (3/4) ... [2019-11-20 04:36:43,415 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 04:36:43,497 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b1a518b4-342b-4010-aa5b-57746498a715/bin/uautomizer/witness.graphml [2019-11-20 04:36:43,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:36:43,498 INFO L168 Benchmark]: Toolchain (without parser) took 26945.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 950.1 MB in the beginning and 976.0 MB in the end (delta: -25.8 MB). Peak memory consumption was 187.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:43,499 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:36:43,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:43,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.17 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. [2019-11-20 04:36:43,500 INFO L168 Benchmark]: Boogie Preprocessor took 33.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:36:43,500 INFO L168 Benchmark]: RCFGBuilder took 500.79 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: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:43,501 INFO L168 Benchmark]: TraceAbstraction took 25906.47 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 986.7 MB in the end (delta: 100.6 MB). Peak memory consumption was 185.5 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:43,501 INFO L168 Benchmark]: Witness Printer took 83.62 ms. Allocated memory is still 1.2 GB. Free memory was 986.7 MB in the beginning and 976.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:36:43,504 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 369.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.17 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 33.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 500.79 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: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 25906.47 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 986.7 MB in the end (delta: 100.6 MB). Peak memory consumption was 185.5 MB. Max. memory is 11.5 GB. * Witness Printer took 83.62 ms. Allocated memory is still 1.2 GB. Free memory was 986.7 MB in the beginning and 976.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; [L5] int i; [L6] i = 0 [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND FALSE !(i < 5) [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ [L43] COND FALSE !(i<5 -1) [L46] x[5 -1] = temp [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND FALSE !(i > 5/2) [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 5 [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 5) [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 25.8s, OverallIterations: 18, TraceHistogramMax: 5, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 523 SDtfs, 187 SDslu, 565 SDs, 0 SdLazy, 304 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 745 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 46 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 19.7s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 879 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 782 ConstructedInterpolants, 0 QuantifiedInterpolants, 52874 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2308 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 745/820 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...