./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/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 c43d2352a3b735baf506669f3be8206cf1152d47 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:34,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:34,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:34,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:34,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:34,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:34,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:34,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:34,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:34,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:34,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:34,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:34,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:34,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:34,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:34,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:34,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:34,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:34,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:34,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:34,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:34,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:34,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:34,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:34,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:34,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:34,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:34,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:34,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:34,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:34,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:34,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:34,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:34,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:34,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:34,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:34,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:34,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:34,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:34,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:34,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:34,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:34,829 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:34,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:34,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:34,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:34,840 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:34,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:34,840 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:34,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:34,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:34,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:34,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:34,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:34,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:34,842 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:34,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:34,842 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:34,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:34,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:34,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:34,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:34,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:34,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:34,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:34,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:34,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:34,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:34,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:34,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:34,845 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/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/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 -> c43d2352a3b735baf506669f3be8206cf1152d47 [2019-10-22 08:56:34,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:34,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:34,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:34,891 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:34,891 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:34,894 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-10-22 08:56:34,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/data/068f39ebe/69039633661a4656a6f404e7f4c85c2e/FLAG4d8a81dd1 [2019-10-22 08:56:35,438 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:35,439 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-10-22 08:56:35,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/data/068f39ebe/69039633661a4656a6f404e7f4c85c2e/FLAG4d8a81dd1 [2019-10-22 08:56:35,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/data/068f39ebe/69039633661a4656a6f404e7f4c85c2e [2019-10-22 08:56:35,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:35,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:35,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:35,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:35,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:35,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:35" (1/1) ... [2019-10-22 08:56:35,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44925fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:35, skipping insertion in model container [2019-10-22 08:56:35,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:35" (1/1) ... [2019-10-22 08:56:35,935 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:35,984 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:36,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:36,424 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:36,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:36,529 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:36,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36 WrapperNode [2019-10-22 08:56:36,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:36,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:36,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:36,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:36,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:36,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:36,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:36,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:36,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:36,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:36,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:36,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:36,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/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 [2019-10-22 08:56:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 08:56:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 08:56:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 08:56:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 08:56:36,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 08:56:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 08:56:36,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 08:56:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 08:56:36,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 08:56:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 08:56:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:36,657 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 08:56:36,948 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:36,948 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:56:36,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:36 BoogieIcfgContainer [2019-10-22 08:56:36,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:36,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:36,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:36,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:36,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:35" (1/3) ... [2019-10-22 08:56:36,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3e67d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:36, skipping insertion in model container [2019-10-22 08:56:36,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36" (2/3) ... [2019-10-22 08:56:36,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3e67d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:36, skipping insertion in model container [2019-10-22 08:56:36,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:36" (3/3) ... [2019-10-22 08:56:36,957 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.oepc.i [2019-10-22 08:56:36,991 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,992 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,992 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,992 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,992 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,993 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,993 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,993 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,993 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,993 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,994 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,994 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,994 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,994 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,994 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,994 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,994 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,995 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,995 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,995 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,996 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,996 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,996 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,996 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,996 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,997 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,997 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,997 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,997 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,997 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,998 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,998 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,998 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,998 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,998 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,998 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,999 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,999 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:36,999 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:37,000 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:37,019 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:56:37,020 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:37,029 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:56:37,039 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:56:37,059 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:37,060 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:37,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:37,061 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:37,061 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:37,061 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:37,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:37,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:37,070 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 64 transitions [2019-10-22 08:56:38,151 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13136 states. [2019-10-22 08:56:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 13136 states. [2019-10-22 08:56:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 08:56:38,182 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,183 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:38,185 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1293881623, now seen corresponding path program 1 times [2019-10-22 08:56:38,204 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495474714] [2019-10-22 08:56:38,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495474714] [2019-10-22 08:56:38,501 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:38,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:38,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781077258] [2019-10-22 08:56:38,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:38,506 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:38,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:38,518 INFO L87 Difference]: Start difference. First operand 13136 states. Second operand 4 states. [2019-10-22 08:56:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,759 INFO L93 Difference]: Finished difference Result 13742 states and 55793 transitions. [2019-10-22 08:56:38,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:38,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-10-22 08:56:38,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:38,824 INFO L225 Difference]: With dead ends: 13742 [2019-10-22 08:56:38,824 INFO L226 Difference]: Without dead ends: 5629 [2019-10-22 08:56:38,825 INFO L600 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 [2019-10-22 08:56:38,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2019-10-22 08:56:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5629. [2019-10-22 08:56:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5629 states. [2019-10-22 08:56:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 22352 transitions. [2019-10-22 08:56:39,087 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 22352 transitions. Word has length 35 [2019-10-22 08:56:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:39,088 INFO L462 AbstractCegarLoop]: Abstraction has 5629 states and 22352 transitions. [2019-10-22 08:56:39,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 22352 transitions. [2019-10-22 08:56:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:56:39,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:39,094 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:39,094 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:39,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:39,095 INFO L82 PathProgramCache]: Analyzing trace with hash -882813431, now seen corresponding path program 1 times [2019-10-22 08:56:39,095 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:39,095 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595652528] [2019-10-22 08:56:39,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:39,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595652528] [2019-10-22 08:56:39,266 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:39,266 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:39,266 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717986934] [2019-10-22 08:56:39,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:39,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:39,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:39,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:39,269 INFO L87 Difference]: Start difference. First operand 5629 states and 22352 transitions. Second operand 5 states. [2019-10-22 08:56:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:39,403 INFO L93 Difference]: Finished difference Result 6141 states and 23832 transitions. [2019-10-22 08:56:39,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:39,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-10-22 08:56:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:39,435 INFO L225 Difference]: With dead ends: 6141 [2019-10-22 08:56:39,435 INFO L226 Difference]: Without dead ends: 5517 [2019-10-22 08:56:39,436 INFO L600 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 [2019-10-22 08:56:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2019-10-22 08:56:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5517. [2019-10-22 08:56:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-22 08:56:39,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 21820 transitions. [2019-10-22 08:56:39,710 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 21820 transitions. Word has length 36 [2019-10-22 08:56:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:39,710 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 21820 transitions. [2019-10-22 08:56:39,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 21820 transitions. [2019-10-22 08:56:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:56:39,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:39,717 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:39,717 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash -912070317, now seen corresponding path program 1 times [2019-10-22 08:56:39,718 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:39,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484607765] [2019-10-22 08:56:39,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:39,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484607765] [2019-10-22 08:56:39,841 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:39,841 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:56:39,841 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649022748] [2019-10-22 08:56:39,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:39,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:39,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:39,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:39,842 INFO L87 Difference]: Start difference. First operand 5517 states and 21820 transitions. Second operand 6 states. [2019-10-22 08:56:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:39,970 INFO L93 Difference]: Finished difference Result 5453 states and 20828 transitions. [2019-10-22 08:56:39,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:39,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-10-22 08:56:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:40,011 INFO L225 Difference]: With dead ends: 5453 [2019-10-22 08:56:40,011 INFO L226 Difference]: Without dead ends: 4845 [2019-10-22 08:56:40,011 INFO L600 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 [2019-10-22 08:56:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2019-10-22 08:56:40,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4845. [2019-10-22 08:56:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2019-10-22 08:56:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 18796 transitions. [2019-10-22 08:56:40,153 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 18796 transitions. Word has length 37 [2019-10-22 08:56:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:40,154 INFO L462 AbstractCegarLoop]: Abstraction has 4845 states and 18796 transitions. [2019-10-22 08:56:40,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 18796 transitions. [2019-10-22 08:56:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:56:40,161 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:40,162 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:40,162 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:40,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:40,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1959602637, now seen corresponding path program 1 times [2019-10-22 08:56:40,162 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:40,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018992931] [2019-10-22 08:56:40,163 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,163 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:40,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018992931] [2019-10-22 08:56:40,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:40,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:40,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585028318] [2019-10-22 08:56:40,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:40,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:40,272 INFO L87 Difference]: Start difference. First operand 4845 states and 18796 transitions. Second operand 7 states. [2019-10-22 08:56:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:40,397 INFO L93 Difference]: Finished difference Result 3565 states and 13036 transitions. [2019-10-22 08:56:40,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:40,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-22 08:56:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:40,409 INFO L225 Difference]: With dead ends: 3565 [2019-10-22 08:56:40,409 INFO L226 Difference]: Without dead ends: 3053 [2019-10-22 08:56:40,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2019-10-22 08:56:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3053. [2019-10-22 08:56:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 08:56:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11180 transitions. [2019-10-22 08:56:40,490 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11180 transitions. Word has length 38 [2019-10-22 08:56:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:40,491 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11180 transitions. [2019-10-22 08:56:40,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:40,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11180 transitions. [2019-10-22 08:56:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:56:40,496 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:40,496 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:40,496 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:40,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:40,497 INFO L82 PathProgramCache]: Analyzing trace with hash -894059009, now seen corresponding path program 1 times [2019-10-22 08:56:40,497 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:40,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120064935] [2019-10-22 08:56:40,497 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,497 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:40,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120064935] [2019-10-22 08:56:40,624 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:40,624 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:40,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535646107] [2019-10-22 08:56:40,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:40,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:40,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:40,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:40,625 INFO L87 Difference]: Start difference. First operand 3053 states and 11180 transitions. Second operand 7 states. [2019-10-22 08:56:40,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:40,808 INFO L93 Difference]: Finished difference Result 5197 states and 19084 transitions. [2019-10-22 08:56:40,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:40,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:56:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:40,821 INFO L225 Difference]: With dead ends: 5197 [2019-10-22 08:56:40,821 INFO L226 Difference]: Without dead ends: 3197 [2019-10-22 08:56:40,822 INFO L600 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 [2019-10-22 08:56:40,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2019-10-22 08:56:40,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3053. [2019-10-22 08:56:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 08:56:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11144 transitions. [2019-10-22 08:56:40,959 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11144 transitions. Word has length 39 [2019-10-22 08:56:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:40,960 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11144 transitions. [2019-10-22 08:56:40,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11144 transitions. [2019-10-22 08:56:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:56:40,965 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:40,965 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:40,965 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:40,965 INFO L82 PathProgramCache]: Analyzing trace with hash -45436537, now seen corresponding path program 2 times [2019-10-22 08:56:40,966 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:40,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928925133] [2019-10-22 08:56:40,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:40,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:41,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928925133] [2019-10-22 08:56:41,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:41,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:56:41,110 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868135816] [2019-10-22 08:56:41,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:41,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:41,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:41,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:41,112 INFO L87 Difference]: Start difference. First operand 3053 states and 11144 transitions. Second operand 8 states. [2019-10-22 08:56:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:41,236 INFO L93 Difference]: Finished difference Result 4733 states and 17488 transitions. [2019-10-22 08:56:41,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:41,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 08:56:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:41,245 INFO L225 Difference]: With dead ends: 4733 [2019-10-22 08:56:41,245 INFO L226 Difference]: Without dead ends: 2457 [2019-10-22 08:56:41,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2019-10-22 08:56:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2019-10-22 08:56:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2019-10-22 08:56:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 9108 transitions. [2019-10-22 08:56:41,310 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 9108 transitions. Word has length 39 [2019-10-22 08:56:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:41,311 INFO L462 AbstractCegarLoop]: Abstraction has 2457 states and 9108 transitions. [2019-10-22 08:56:41,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 9108 transitions. [2019-10-22 08:56:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:56:41,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:41,315 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:41,315 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -845562247, now seen corresponding path program 3 times [2019-10-22 08:56:41,316 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:41,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586467425] [2019-10-22 08:56:41,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:41,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586467425] [2019-10-22 08:56:41,447 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:41,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:56:41,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132732164] [2019-10-22 08:56:41,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:41,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:41,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:41,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:41,449 INFO L87 Difference]: Start difference. First operand 2457 states and 9108 transitions. Second operand 8 states. [2019-10-22 08:56:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:41,575 INFO L93 Difference]: Finished difference Result 4137 states and 15404 transitions. [2019-10-22 08:56:41,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:41,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 08:56:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:41,585 INFO L225 Difference]: With dead ends: 4137 [2019-10-22 08:56:41,585 INFO L226 Difference]: Without dead ends: 2357 [2019-10-22 08:56:41,585 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:56:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2019-10-22 08:56:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2357. [2019-10-22 08:56:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2019-10-22 08:56:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 8780 transitions. [2019-10-22 08:56:41,644 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 8780 transitions. Word has length 39 [2019-10-22 08:56:41,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:41,644 INFO L462 AbstractCegarLoop]: Abstraction has 2357 states and 8780 transitions. [2019-10-22 08:56:41,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 8780 transitions. [2019-10-22 08:56:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:56:41,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:41,648 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:41,648 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:41,648 INFO L82 PathProgramCache]: Analyzing trace with hash -308069391, now seen corresponding path program 4 times [2019-10-22 08:56:41,648 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:41,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507290302] [2019-10-22 08:56:41,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:41,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507290302] [2019-10-22 08:56:41,770 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:41,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:41,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689713633] [2019-10-22 08:56:41,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:41,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:41,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:41,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:41,771 INFO L87 Difference]: Start difference. First operand 2357 states and 8780 transitions. Second operand 7 states. [2019-10-22 08:56:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:41,899 INFO L93 Difference]: Finished difference Result 3957 states and 14876 transitions. [2019-10-22 08:56:41,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:41,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:56:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:41,907 INFO L225 Difference]: With dead ends: 3957 [2019-10-22 08:56:41,908 INFO L226 Difference]: Without dead ends: 2277 [2019-10-22 08:56:41,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2019-10-22 08:56:41,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2213. [2019-10-22 08:56:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2019-10-22 08:56:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 8336 transitions. [2019-10-22 08:56:41,960 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 8336 transitions. Word has length 39 [2019-10-22 08:56:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:41,961 INFO L462 AbstractCegarLoop]: Abstraction has 2213 states and 8336 transitions. [2019-10-22 08:56:41,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 8336 transitions. [2019-10-22 08:56:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:56:41,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:41,964 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:41,964 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2043714867, now seen corresponding path program 5 times [2019-10-22 08:56:41,964 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:41,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595394223] [2019-10-22 08:56:41,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:41,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:42,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595394223] [2019-10-22 08:56:42,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:42,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:56:42,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024548735] [2019-10-22 08:56:42,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:42,074 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:42,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:42,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:42,075 INFO L87 Difference]: Start difference. First operand 2213 states and 8336 transitions. Second operand 7 states. [2019-10-22 08:56:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:42,190 INFO L93 Difference]: Finished difference Result 1701 states and 6288 transitions. [2019-10-22 08:56:42,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:42,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:56:42,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:42,190 INFO L225 Difference]: With dead ends: 1701 [2019-10-22 08:56:42,190 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:56:42,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:56:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:56:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:56:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:56:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:56:42,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-22 08:56:42,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:42,192 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:42,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:42,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:56:42,195 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:56:42,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:42 BasicIcfg [2019-10-22 08:56:42,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:42,198 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:42,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:42,199 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:42,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:36" (3/4) ... [2019-10-22 08:56:42,202 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:56:42,209 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 08:56:42,209 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 08:56:42,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 08:56:42,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 08:56:42,214 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 08:56:42,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:56:42,259 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7f60ab12-156c-4394-8ee4-b683a921c1c2/bin/uautomizer/witness.graphml [2019-10-22 08:56:42,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:42,267 INFO L168 Benchmark]: Toolchain (without parser) took 6348.01 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 229.6 MB). Free memory was 944.7 MB in the beginning and 834.2 MB in the end (delta: 110.4 MB). Peak memory consumption was 340.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:42,268 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:42,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:42,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:42,273 INFO L168 Benchmark]: Boogie Preprocessor took 26.00 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:42,273 INFO L168 Benchmark]: RCFGBuilder took 353.23 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:42,274 INFO L168 Benchmark]: TraceAbstraction took 5247.57 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 842.3 MB in the end (delta: 234.4 MB). Peak memory consumption was 320.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:42,274 INFO L168 Benchmark]: Witness Printer took 66.26 ms. Allocated memory is still 1.3 GB. Free memory was 842.3 MB in the beginning and 834.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:42,276 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 610.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -163.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.00 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 353.23 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5247.57 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 842.3 MB in the end (delta: 234.4 MB). Peak memory consumption was 320.4 MB. Max. memory is 11.5 GB. * Witness Printer took 66.26 ms. Allocated memory is still 1.3 GB. Free memory was 842.3 MB in the beginning and 834.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 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 9 procedures, 88 locations, 1 error locations. Result: SAFE, OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 657 SDtfs, 1055 SDslu, 1895 SDs, 0 SdLazy, 236 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13136occurred 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: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 208 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 341 NumberOfCodeBlocks, 341 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 45142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...