./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.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_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/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 129ce07aaaf72d43feda4e85ee0279cc31551c1d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:44:15,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:44:15,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:44:15,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:44:15,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:44:15,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:44:15,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:44:15,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:44:15,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:44:15,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:44:15,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:44:15,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:44:15,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:44:15,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:44:15,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:44:15,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:44:15,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:44:15,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:44:15,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:44:15,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:44:15,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:44:15,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:44:15,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:44:15,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:44:15,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:44:15,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:44:15,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:44:15,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:44:15,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:44:15,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:44:15,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:44:15,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:44:15,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:44:15,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:44:15,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:44:15,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:44:15,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:44:15,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:44:15,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:44:15,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:44:15,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:44:15,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:44:15,695 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:44:15,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:44:15,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:44:15,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:44:15,708 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:44:15,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:44:15,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:44:15,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:44:15,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:44:15,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:44:15,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:44:15,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:44:15,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:44:15,710 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:44:15,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:44:15,710 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:44:15,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:44:15,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:44:15,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:44:15,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:44:15,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:44:15,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:44:15,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:44:15,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:44:15,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:44:15,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:44:15,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:44:15,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:44:15,714 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_d95cd8e5-83ac-4ba0-90e6-a21df328330d/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 -> 129ce07aaaf72d43feda4e85ee0279cc31551c1d [2019-11-20 10:44:15,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:44:15,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:44:15,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:44:15,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:44:15,927 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:44:15,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2019-11-20 10:44:16,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/data/ceb694317/3ddf0743a4ec4410804e5053c3c8e8c9/FLAGe90804d26 [2019-11-20 10:44:16,462 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:44:16,463 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2019-11-20 10:44:16,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/data/ceb694317/3ddf0743a4ec4410804e5053c3c8e8c9/FLAGe90804d26 [2019-11-20 10:44:16,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/data/ceb694317/3ddf0743a4ec4410804e5053c3c8e8c9 [2019-11-20 10:44:16,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:44:16,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:44:16,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:44:16,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:44:16,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:44:16,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:16" (1/1) ... [2019-11-20 10:44:16,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd987fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:16, skipping insertion in model container [2019-11-20 10:44:16,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:16" (1/1) ... [2019-11-20 10:44:16,857 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:44:16,904 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:44:17,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:44:17,437 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:44:17,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:44:17,600 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:44:17,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17 WrapperNode [2019-11-20 10:44:17,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:44:17,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:44:17,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:44:17,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:44:17,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:44:17,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:44:17,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:44:17,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:44:17,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... [2019-11-20 10:44:17,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:44:17,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:44:17,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:44:17,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:44:17,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/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 10:44:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 10:44:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 10:44:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:44:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:44:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 10:44:17,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 10:44:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 10:44:17,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 10:44:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 10:44:17,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 10:44:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 10:44:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:44:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:44:17,795 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 10:44:18,084 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:44:18,084 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 10:44:18,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:18 BoogieIcfgContainer [2019-11-20 10:44:18,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:44:18,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:44:18,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:44:18,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:44:18,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:44:16" (1/3) ... [2019-11-20 10:44:18,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd97253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:18, skipping insertion in model container [2019-11-20 10:44:18,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:17" (2/3) ... [2019-11-20 10:44:18,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd97253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:18, skipping insertion in model container [2019-11-20 10:44:18,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:18" (3/3) ... [2019-11-20 10:44:18,091 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2019-11-20 10:44:18,137 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,138 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,138 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,138 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,139 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,139 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,139 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,139 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,140 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,140 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,140 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,140 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,141 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,141 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,141 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,141 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,142 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,142 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,142 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,143 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,143 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,143 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,143 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,143 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,144 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,144 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,144 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,144 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,145 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,145 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,145 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,146 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,146 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,146 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,146 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,147 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,147 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,147 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,147 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,148 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,148 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,148 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,149 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,149 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,149 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,149 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,149 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,150 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,150 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,150 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,150 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,151 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,151 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,151 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 10:44:18,202 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 10:44:18,203 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:44:18,210 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:44:18,220 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:44:18,237 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:44:18,237 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:44:18,237 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:44:18,237 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:44:18,238 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:44:18,238 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:44:18,238 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:44:18,238 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:44:18,249 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 74 transitions [2019-11-20 10:44:21,787 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 31743 states. [2019-11-20 10:44:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 31743 states. [2019-11-20 10:44:21,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 10:44:21,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:21,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:21,844 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash -167790918, now seen corresponding path program 1 times [2019-11-20 10:44:21,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:21,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570031207] [2019-11-20 10:44:21,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:22,171 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 10:44:22,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570031207] [2019-11-20 10:44:22,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:22,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:44:22,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959453655] [2019-11-20 10:44:22,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:44:22,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:44:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:44:22,192 INFO L87 Difference]: Start difference. First operand 31743 states. Second operand 4 states. [2019-11-20 10:44:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:22,829 INFO L93 Difference]: Finished difference Result 33012 states and 103292 transitions. [2019-11-20 10:44:22,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:44:22,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-20 10:44:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:22,982 INFO L225 Difference]: With dead ends: 33012 [2019-11-20 10:44:22,983 INFO L226 Difference]: Without dead ends: 14274 [2019-11-20 10:44:22,984 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:44:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14274 states. [2019-11-20 10:44:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14274 to 14274. [2019-11-20 10:44:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14274 states. [2019-11-20 10:44:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14274 states to 14274 states and 44297 transitions. [2019-11-20 10:44:23,712 INFO L78 Accepts]: Start accepts. Automaton has 14274 states and 44297 transitions. Word has length 30 [2019-11-20 10:44:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:23,713 INFO L462 AbstractCegarLoop]: Abstraction has 14274 states and 44297 transitions. [2019-11-20 10:44:23,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:44:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 14274 states and 44297 transitions. [2019-11-20 10:44:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 10:44:23,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:23,746 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:23,746 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash 422451459, now seen corresponding path program 1 times [2019-11-20 10:44:23,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:23,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739687698] [2019-11-20 10:44:23,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:23,899 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 10:44:23,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739687698] [2019-11-20 10:44:23,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:23,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 10:44:23,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524081690] [2019-11-20 10:44:23,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 10:44:23,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:23,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:44:23,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:44:23,902 INFO L87 Difference]: Start difference. First operand 14274 states and 44297 transitions. Second operand 5 states. [2019-11-20 10:44:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:24,197 INFO L93 Difference]: Finished difference Result 14274 states and 42110 transitions. [2019-11-20 10:44:24,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:44:24,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 10:44:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:24,272 INFO L225 Difference]: With dead ends: 14274 [2019-11-20 10:44:24,272 INFO L226 Difference]: Without dead ends: 12573 [2019-11-20 10:44:24,273 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:44:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12573 states. [2019-11-20 10:44:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12573 to 12573. [2019-11-20 10:44:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12573 states. [2019-11-20 10:44:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12573 states to 12573 states and 38060 transitions. [2019-11-20 10:44:24,732 INFO L78 Accepts]: Start accepts. Automaton has 12573 states and 38060 transitions. Word has length 31 [2019-11-20 10:44:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:24,733 INFO L462 AbstractCegarLoop]: Abstraction has 12573 states and 38060 transitions. [2019-11-20 10:44:24,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 10:44:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12573 states and 38060 transitions. [2019-11-20 10:44:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 10:44:24,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:24,764 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:24,764 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash 711586572, now seen corresponding path program 1 times [2019-11-20 10:44:24,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:24,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369323257] [2019-11-20 10:44:24,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:24,896 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 10:44:24,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369323257] [2019-11-20 10:44:24,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:24,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 10:44:24,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514246530] [2019-11-20 10:44:24,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 10:44:24,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:24,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 10:44:24,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 10:44:24,898 INFO L87 Difference]: Start difference. First operand 12573 states and 38060 transitions. Second operand 6 states. [2019-11-20 10:44:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:25,109 INFO L93 Difference]: Finished difference Result 8928 states and 24938 transitions. [2019-11-20 10:44:25,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 10:44:25,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-20 10:44:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:25,139 INFO L225 Difference]: With dead ends: 8928 [2019-11-20 10:44:25,140 INFO L226 Difference]: Without dead ends: 7470 [2019-11-20 10:44:25,140 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:44:25,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7470 states. [2019-11-20 10:44:25,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7470 to 7470. [2019-11-20 10:44:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7470 states. [2019-11-20 10:44:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7470 states to 7470 states and 21050 transitions. [2019-11-20 10:44:25,541 INFO L78 Accepts]: Start accepts. Automaton has 7470 states and 21050 transitions. Word has length 32 [2019-11-20 10:44:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:25,542 INFO L462 AbstractCegarLoop]: Abstraction has 7470 states and 21050 transitions. [2019-11-20 10:44:25,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 10:44:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7470 states and 21050 transitions. [2019-11-20 10:44:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 10:44:25,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:25,554 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:25,555 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash -220974475, now seen corresponding path program 1 times [2019-11-20 10:44:25,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:25,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773920039] [2019-11-20 10:44:25,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:25,733 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 10:44:25,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773920039] [2019-11-20 10:44:25,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:25,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 10:44:25,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577207508] [2019-11-20 10:44:25,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 10:44:25,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:25,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 10:44:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 10:44:25,735 INFO L87 Difference]: Start difference. First operand 7470 states and 21050 transitions. Second operand 6 states. [2019-11-20 10:44:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:25,931 INFO L93 Difference]: Finished difference Result 12654 states and 35495 transitions. [2019-11-20 10:44:25,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:44:25,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-20 10:44:25,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:25,958 INFO L225 Difference]: With dead ends: 12654 [2019-11-20 10:44:25,958 INFO L226 Difference]: Without dead ends: 8037 [2019-11-20 10:44:25,959 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:44:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2019-11-20 10:44:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 7227. [2019-11-20 10:44:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7227 states. [2019-11-20 10:44:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 20321 transitions. [2019-11-20 10:44:26,164 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 20321 transitions. Word has length 33 [2019-11-20 10:44:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:26,165 INFO L462 AbstractCegarLoop]: Abstraction has 7227 states and 20321 transitions. [2019-11-20 10:44:26,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 10:44:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 20321 transitions. [2019-11-20 10:44:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 10:44:26,178 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:26,178 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:26,179 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:26,179 INFO L82 PathProgramCache]: Analyzing trace with hash -740717551, now seen corresponding path program 2 times [2019-11-20 10:44:26,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:26,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494769239] [2019-11-20 10:44:26,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:26,369 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 10:44:26,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494769239] [2019-11-20 10:44:26,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:26,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 10:44:26,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456506981] [2019-11-20 10:44:26,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:44:26,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:44:26,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:44:26,371 INFO L87 Difference]: Start difference. First operand 7227 states and 20321 transitions. Second operand 7 states. [2019-11-20 10:44:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:26,587 INFO L93 Difference]: Finished difference Result 12168 states and 34199 transitions. [2019-11-20 10:44:26,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 10:44:26,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-11-20 10:44:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:26,630 INFO L225 Difference]: With dead ends: 12168 [2019-11-20 10:44:26,630 INFO L226 Difference]: Without dead ends: 7038 [2019-11-20 10:44:26,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-20 10:44:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2019-11-20 10:44:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 7038. [2019-11-20 10:44:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7038 states. [2019-11-20 10:44:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7038 states to 7038 states and 19781 transitions. [2019-11-20 10:44:26,806 INFO L78 Accepts]: Start accepts. Automaton has 7038 states and 19781 transitions. Word has length 33 [2019-11-20 10:44:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:26,806 INFO L462 AbstractCegarLoop]: Abstraction has 7038 states and 19781 transitions. [2019-11-20 10:44:26,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:44:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 7038 states and 19781 transitions. [2019-11-20 10:44:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 10:44:26,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:26,818 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:26,818 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1808179121, now seen corresponding path program 3 times [2019-11-20 10:44:26,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:26,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749086730] [2019-11-20 10:44:26,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:26,950 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 10:44:26,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749086730] [2019-11-20 10:44:26,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:26,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 10:44:26,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849362346] [2019-11-20 10:44:26,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:44:26,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:26,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:44:26,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:44:26,952 INFO L87 Difference]: Start difference. First operand 7038 states and 19781 transitions. Second operand 7 states. [2019-11-20 10:44:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:27,117 INFO L93 Difference]: Finished difference Result 11655 states and 32741 transitions. [2019-11-20 10:44:27,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 10:44:27,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-11-20 10:44:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:27,141 INFO L225 Difference]: With dead ends: 11655 [2019-11-20 10:44:27,141 INFO L226 Difference]: Without dead ends: 6957 [2019-11-20 10:44:27,141 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 10:44:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2019-11-20 10:44:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 6957. [2019-11-20 10:44:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6957 states. [2019-11-20 10:44:27,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 19619 transitions. [2019-11-20 10:44:27,312 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 19619 transitions. Word has length 33 [2019-11-20 10:44:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:27,313 INFO L462 AbstractCegarLoop]: Abstraction has 6957 states and 19619 transitions. [2019-11-20 10:44:27,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:44:27,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 19619 transitions. [2019-11-20 10:44:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 10:44:27,324 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:44:27,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:44:27,324 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:44:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:44:27,325 INFO L82 PathProgramCache]: Analyzing trace with hash -740345293, now seen corresponding path program 4 times [2019-11-20 10:44:27,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:44:27,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625361603] [2019-11-20 10:44:27,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:44:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:44:27,472 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 10:44:27,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625361603] [2019-11-20 10:44:27,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:44:27,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 10:44:27,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715706008] [2019-11-20 10:44:27,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 10:44:27,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:44:27,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 10:44:27,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:44:27,474 INFO L87 Difference]: Start difference. First operand 6957 states and 19619 transitions. Second operand 8 states. [2019-11-20 10:44:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:44:27,658 INFO L93 Difference]: Finished difference Result 5499 states and 15245 transitions. [2019-11-20 10:44:27,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 10:44:27,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2019-11-20 10:44:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:44:27,659 INFO L225 Difference]: With dead ends: 5499 [2019-11-20 10:44:27,659 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 10:44:27,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-20 10:44:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 10:44:27,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 10:44:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 10:44:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:44:27,661 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-11-20 10:44:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:44:27,661 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:44:27,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 10:44:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:44:27,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 10:44:27,664 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 10:44:27,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:44:27 BasicIcfg [2019-11-20 10:44:27,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:44:27,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:44:27,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:44:27,667 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:44:27,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:18" (3/4) ... [2019-11-20 10:44:27,673 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 10:44:27,691 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 10:44:27,691 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 10:44:27,691 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 10:44:27,705 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-20 10:44:27,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 10:44:27,706 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 10:44:27,820 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d95cd8e5-83ac-4ba0-90e6-a21df328330d/bin/uautomizer/witness.graphml [2019-11-20 10:44:27,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:44:27,823 INFO L168 Benchmark]: Toolchain (without parser) took 10980.65 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 740.8 MB). Free memory was 939.3 MB in the beginning and 1.7 GB in the end (delta: -725.3 MB). Peak memory consumption was 613.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,823 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:44:27,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,825 INFO L168 Benchmark]: Boogie Preprocessor took 48.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:44:27,826 INFO L168 Benchmark]: RCFGBuilder took 369.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,826 INFO L168 Benchmark]: TraceAbstraction took 9580.99 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 322.4 MB). Free memory was 1.1 GB in the beginning and 774.2 MB in the end (delta: 277.2 MB). Peak memory consumption was 599.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,827 INFO L168 Benchmark]: Witness Printer took 153.54 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 305.7 MB). Free memory was 774.2 MB in the beginning and 1.7 GB in the end (delta: -890.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:44:27,830 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 759.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.28 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 369.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9580.99 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 322.4 MB). Free memory was 1.1 GB in the beginning and 774.2 MB in the end (delta: 277.2 MB). Peak memory consumption was 599.6 MB. Max. memory is 11.5 GB. * Witness Printer took 153.54 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 305.7 MB). Free memory was 774.2 MB in the beginning and 1.7 GB in the end (delta: -890.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 89 locations, 1 error locations. Result: SAFE, OverallTime: 9.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 677 SDtfs, 951 SDslu, 1714 SDs, 0 SdLazy, 246 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31743occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 810 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 19290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...