./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_pso.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_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/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 851ca5f4a5b9ac289061b733ed734c475fc3634f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:01:16,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:16,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:16,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:16,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:16,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:16,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:16,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:16,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:16,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:16,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:16,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:16,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:16,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:16,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:16,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:16,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:16,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:16,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:16,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:16,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:16,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:16,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:16,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:16,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:16,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:16,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:16,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:16,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:16,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:16,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:16,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:16,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:16,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:16,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:16,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:16,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:16,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:16,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:16,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:16,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:16,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:01:16,654 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:16,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:16,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:16,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:16,656 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:16,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:16,656 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:16,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:16,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:16,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:16,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:16,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:16,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:16,657 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:16,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:16,658 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:16,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:16,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:16,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:16,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:16,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:16,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:16,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:16,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:16,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:16,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:16,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:16,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:16,660 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_0a28847d-ab17-466d-ba60-812f3b73d167/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 -> 851ca5f4a5b9ac289061b733ed734c475fc3634f [2019-10-22 09:01:16,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:16,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:16,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:16,701 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:16,702 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:16,702 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2019-10-22 09:01:16,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/data/6870a6ec8/e9645b2c84c2453eb8ca9f59246439ad/FLAGf3c788427 [2019-10-22 09:01:17,174 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:17,174 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2019-10-22 09:01:17,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/data/6870a6ec8/e9645b2c84c2453eb8ca9f59246439ad/FLAGf3c788427 [2019-10-22 09:01:17,539 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/data/6870a6ec8/e9645b2c84c2453eb8ca9f59246439ad [2019-10-22 09:01:17,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:17,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:17,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:17,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:17,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:17,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:17" (1/1) ... [2019-10-22 09:01:17,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a30f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:17, skipping insertion in model container [2019-10-22 09:01:17,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:17" (1/1) ... [2019-10-22 09:01:17,558 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:17,597 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:18,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:18,039 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:18,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:18,176 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:18,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18 WrapperNode [2019-10-22 09:01:18,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:18,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:18,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:18,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:18,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:18,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:18,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:18,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:18,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... [2019-10-22 09:01:18,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:18,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:18,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:18,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:18,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/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 09:01:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:01:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 09:01:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:01:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:01:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 09:01:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 09:01:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 09:01:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 09:01:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 09:01:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 09:01:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 09:01:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 09:01:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 09:01:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:18,331 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 09:01:18,675 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:18,676 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:01:18,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:18 BoogieIcfgContainer [2019-10-22 09:01:18,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:18,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:18,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:18,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:18,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:17" (1/3) ... [2019-10-22 09:01:18,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b18016c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:18, skipping insertion in model container [2019-10-22 09:01:18,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:18" (2/3) ... [2019-10-22 09:01:18,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b18016c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:18, skipping insertion in model container [2019-10-22 09:01:18,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:18" (3/3) ... [2019-10-22 09:01:18,686 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2019-10-22 09:01:18,745 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,745 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,745 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,746 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,746 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,746 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,746 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,747 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,747 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,747 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,747 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,748 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,748 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,748 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,748 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,748 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,748 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,749 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,749 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,749 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,751 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,751 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,752 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,752 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,752 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,752 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,752 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,753 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,753 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,753 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,753 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,754 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,754 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,754 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,754 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,754 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,755 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,755 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,755 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,755 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:01:18,780 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 09:01:18,780 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:18,789 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:01:18,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:01:18,827 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:18,827 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:18,827 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:18,828 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:18,828 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:18,828 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:18,829 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:18,829 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:18,840 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 66 transitions [2019-10-22 09:01:20,223 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13138 states. [2019-10-22 09:01:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13138 states. [2019-10-22 09:01:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 09:01:20,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:20,263 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 09:01:20,264 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:20,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1232982921, now seen corresponding path program 1 times [2019-10-22 09:01:20,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:20,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953008892] [2019-10-22 09:01:20,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:20,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:20,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:20,646 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 09:01:20,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953008892] [2019-10-22 09:01:20,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:20,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:20,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761170377] [2019-10-22 09:01:20,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:20,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:20,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:20,674 INFO L87 Difference]: Start difference. First operand 13138 states. Second operand 4 states. [2019-10-22 09:01:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:20,936 INFO L93 Difference]: Finished difference Result 13744 states and 55795 transitions. [2019-10-22 09:01:20,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:20,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-10-22 09:01:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:21,021 INFO L225 Difference]: With dead ends: 13744 [2019-10-22 09:01:21,021 INFO L226 Difference]: Without dead ends: 5631 [2019-10-22 09:01:21,023 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 09:01:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2019-10-22 09:01:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5631. [2019-10-22 09:01:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5631 states. [2019-10-22 09:01:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 22354 transitions. [2019-10-22 09:01:21,374 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 22354 transitions. Word has length 37 [2019-10-22 09:01:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:21,375 INFO L462 AbstractCegarLoop]: Abstraction has 5631 states and 22354 transitions. [2019-10-22 09:01:21,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 22354 transitions. [2019-10-22 09:01:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 09:01:21,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:21,382 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 09:01:21,383 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:21,385 INFO L82 PathProgramCache]: Analyzing trace with hash -911838873, now seen corresponding path program 1 times [2019-10-22 09:01:21,385 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:21,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638911124] [2019-10-22 09:01:21,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:21,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:21,544 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 09:01:21,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638911124] [2019-10-22 09:01:21,544 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:21,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:01:21,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104326952] [2019-10-22 09:01:21,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:21,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:21,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:21,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:21,548 INFO L87 Difference]: Start difference. First operand 5631 states and 22354 transitions. Second operand 5 states. [2019-10-22 09:01:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:21,758 INFO L93 Difference]: Finished difference Result 6143 states and 23834 transitions. [2019-10-22 09:01:21,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:21,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-22 09:01:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:21,793 INFO L225 Difference]: With dead ends: 6143 [2019-10-22 09:01:21,794 INFO L226 Difference]: Without dead ends: 5519 [2019-10-22 09:01:21,794 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 09:01:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2019-10-22 09:01:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5519. [2019-10-22 09:01:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5519 states. [2019-10-22 09:01:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 21822 transitions. [2019-10-22 09:01:22,112 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 21822 transitions. Word has length 38 [2019-10-22 09:01:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:22,112 INFO L462 AbstractCegarLoop]: Abstraction has 5519 states and 21822 transitions. [2019-10-22 09:01:22,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 21822 transitions. [2019-10-22 09:01:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 09:01:22,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:22,120 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 09:01:22,121 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:22,121 INFO L82 PathProgramCache]: Analyzing trace with hash 32130101, now seen corresponding path program 1 times [2019-10-22 09:01:22,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:22,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405889782] [2019-10-22 09:01:22,122 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,122 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,269 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 09:01:22,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405889782] [2019-10-22 09:01:22,270 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:22,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:01:22,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441591145] [2019-10-22 09:01:22,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:22,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:22,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:22,272 INFO L87 Difference]: Start difference. First operand 5519 states and 21822 transitions. Second operand 6 states. [2019-10-22 09:01:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:22,457 INFO L93 Difference]: Finished difference Result 5455 states and 20830 transitions. [2019-10-22 09:01:22,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:22,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-22 09:01:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:22,503 INFO L225 Difference]: With dead ends: 5455 [2019-10-22 09:01:22,504 INFO L226 Difference]: Without dead ends: 4847 [2019-10-22 09:01:22,504 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 09:01:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2019-10-22 09:01:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 4847. [2019-10-22 09:01:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4847 states. [2019-10-22 09:01:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 18798 transitions. [2019-10-22 09:01:22,656 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 18798 transitions. Word has length 39 [2019-10-22 09:01:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:22,656 INFO L462 AbstractCegarLoop]: Abstraction has 4847 states and 18798 transitions. [2019-10-22 09:01:22,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 18798 transitions. [2019-10-22 09:01:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 09:01:22,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:22,664 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, 1] [2019-10-22 09:01:22,664 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1518806347, now seen corresponding path program 1 times [2019-10-22 09:01:22,665 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:22,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453851051] [2019-10-22 09:01:22,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,665 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:22,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:22,796 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 09:01:22,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453851051] [2019-10-22 09:01:22,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:22,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:22,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199075859] [2019-10-22 09:01:22,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:22,797 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:22,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:22,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:22,798 INFO L87 Difference]: Start difference. First operand 4847 states and 18798 transitions. Second operand 7 states. [2019-10-22 09:01:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:22,959 INFO L93 Difference]: Finished difference Result 3567 states and 13038 transitions. [2019-10-22 09:01:22,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:22,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-10-22 09:01:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:22,972 INFO L225 Difference]: With dead ends: 3567 [2019-10-22 09:01:22,973 INFO L226 Difference]: Without dead ends: 3055 [2019-10-22 09:01:22,973 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2019-10-22 09:01:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3055. [2019-10-22 09:01:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3055 states. [2019-10-22 09:01:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 11182 transitions. [2019-10-22 09:01:23,069 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 11182 transitions. Word has length 40 [2019-10-22 09:01:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:23,070 INFO L462 AbstractCegarLoop]: Abstraction has 3055 states and 11182 transitions. [2019-10-22 09:01:23,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 11182 transitions. [2019-10-22 09:01:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:01:23,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:23,078 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, 1, 1] [2019-10-22 09:01:23,078 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:23,078 INFO L82 PathProgramCache]: Analyzing trace with hash -590398305, now seen corresponding path program 1 times [2019-10-22 09:01:23,079 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:23,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425243584] [2019-10-22 09:01:23,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,079 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,241 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 09:01:23,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425243584] [2019-10-22 09:01:23,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:23,242 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:01:23,242 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058118329] [2019-10-22 09:01:23,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:23,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:23,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:23,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:23,243 INFO L87 Difference]: Start difference. First operand 3055 states and 11182 transitions. Second operand 8 states. [2019-10-22 09:01:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:23,370 INFO L93 Difference]: Finished difference Result 4735 states and 17542 transitions. [2019-10-22 09:01:23,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:23,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2019-10-22 09:01:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:23,381 INFO L225 Difference]: With dead ends: 4735 [2019-10-22 09:01:23,381 INFO L226 Difference]: Without dead ends: 2459 [2019-10-22 09:01:23,382 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 09:01:23,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2019-10-22 09:01:23,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2459. [2019-10-22 09:01:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-10-22 09:01:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 9126 transitions. [2019-10-22 09:01:23,468 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 9126 transitions. Word has length 41 [2019-10-22 09:01:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:23,469 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 9126 transitions. [2019-10-22 09:01:23,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 9126 transitions. [2019-10-22 09:01:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:01:23,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:23,473 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, 1, 1] [2019-10-22 09:01:23,474 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:23,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:23,474 INFO L82 PathProgramCache]: Analyzing trace with hash 409184359, now seen corresponding path program 2 times [2019-10-22 09:01:23,474 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:23,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056772262] [2019-10-22 09:01:23,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:23,664 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2019-10-22 09:01:23,691 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 09:01:23,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056772262] [2019-10-22 09:01:23,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:23,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:23,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371746180] [2019-10-22 09:01:23,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:23,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:23,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:23,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:23,692 INFO L87 Difference]: Start difference. First operand 2459 states and 9126 transitions. Second operand 7 states. [2019-10-22 09:01:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:23,807 INFO L93 Difference]: Finished difference Result 4059 states and 15222 transitions. [2019-10-22 09:01:23,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:23,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-22 09:01:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:23,816 INFO L225 Difference]: With dead ends: 4059 [2019-10-22 09:01:23,816 INFO L226 Difference]: Without dead ends: 2263 [2019-10-22 09:01:23,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2019-10-22 09:01:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2019-10-22 09:01:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2019-10-22 09:01:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 8530 transitions. [2019-10-22 09:01:23,877 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 8530 transitions. Word has length 41 [2019-10-22 09:01:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:23,878 INFO L462 AbstractCegarLoop]: Abstraction has 2263 states and 8530 transitions. [2019-10-22 09:01:23,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:23,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 8530 transitions. [2019-10-22 09:01:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:01:23,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:23,881 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, 1, 1] [2019-10-22 09:01:23,882 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash -604963235, now seen corresponding path program 3 times [2019-10-22 09:01:23,882 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:23,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980616531] [2019-10-22 09:01:23,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:23,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,012 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 09:01:24,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980616531] [2019-10-22 09:01:24,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:24,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:24,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916209868] [2019-10-22 09:01:24,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:24,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:24,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:24,015 INFO L87 Difference]: Start difference. First operand 2263 states and 8530 transitions. Second operand 7 states. [2019-10-22 09:01:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:24,137 INFO L93 Difference]: Finished difference Result 3799 states and 14418 transitions. [2019-10-22 09:01:24,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:24,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-22 09:01:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:24,148 INFO L225 Difference]: With dead ends: 3799 [2019-10-22 09:01:24,148 INFO L226 Difference]: Without dead ends: 2163 [2019-10-22 09:01:24,148 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 09:01:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2019-10-22 09:01:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2019-10-22 09:01:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2019-10-22 09:01:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 8222 transitions. [2019-10-22 09:01:24,210 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 8222 transitions. Word has length 41 [2019-10-22 09:01:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:24,210 INFO L462 AbstractCegarLoop]: Abstraction has 2163 states and 8222 transitions. [2019-10-22 09:01:24,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 8222 transitions. [2019-10-22 09:01:24,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:01:24,213 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:24,214 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, 1, 1] [2019-10-22 09:01:24,215 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:24,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1307472511, now seen corresponding path program 4 times [2019-10-22 09:01:24,215 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:24,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458659924] [2019-10-22 09:01:24,215 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:24,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:24,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:24,344 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 09:01:24,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458659924] [2019-10-22 09:01:24,344 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:24,345 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:24,345 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863554277] [2019-10-22 09:01:24,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:24,346 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:24,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:24,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:24,347 INFO L87 Difference]: Start difference. First operand 2163 states and 8222 transitions. Second operand 7 states. [2019-10-22 09:01:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:24,444 INFO L93 Difference]: Finished difference Result 1651 states and 6174 transitions. [2019-10-22 09:01:24,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:24,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-22 09:01:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:24,445 INFO L225 Difference]: With dead ends: 1651 [2019-10-22 09:01:24,445 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:01:24,445 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 09:01:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:01:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:01:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:01:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:01:24,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-10-22 09:01:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:24,447 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:24,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:01:24,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:01:24,454 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 09:01:24,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:24 BasicIcfg [2019-10-22 09:01:24,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:24,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:24,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:24,457 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:24,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:18" (3/4) ... [2019-10-22 09:01:24,462 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:01:24,469 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 09:01:24,470 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 09:01:24,471 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 09:01:24,471 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 09:01:24,475 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 09:01:24,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 09:01:24,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0a28847d-ab17-466d-ba60-812f3b73d167/bin/uautomizer/witness.graphml [2019-10-22 09:01:24,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:24,535 INFO L168 Benchmark]: Toolchain (without parser) took 6991.88 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 229.1 MB). Free memory was 939.1 MB in the beginning and 986.7 MB in the end (delta: -47.5 MB). Peak memory consumption was 181.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:24,535 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:24,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -159.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:24,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:24,536 INFO L168 Benchmark]: Boogie Preprocessor took 37.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:24,537 INFO L168 Benchmark]: RCFGBuilder took 411.30 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:24,537 INFO L168 Benchmark]: TraceAbstraction took 5778.27 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 101.7 MB). Free memory was 1.1 GB in the beginning and 989.1 MB in the end (delta: 76.8 MB). Peak memory consumption was 178.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:24,540 INFO L168 Benchmark]: Witness Printer took 76.77 ms. Allocated memory is still 1.3 GB. Free memory was 989.1 MB in the beginning and 986.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:24,542 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 632.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -159.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 411.30 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5778.27 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 101.7 MB). Free memory was 1.1 GB in the beginning and 989.1 MB in the end (delta: 76.8 MB). Peak memory consumption was 178.5 MB. Max. memory is 11.5 GB. * Witness Printer took 76.77 ms. Allocated memory is still 1.3 GB. Free memory was 989.1 MB in the beginning and 986.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 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, 90 locations, 1 error locations. Result: SAFE, OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 542 SDtfs, 997 SDslu, 1430 SDs, 0 SdLazy, 170 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13138occurred 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: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 36630 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...