./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/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 2b31afe6a0b1e539547810c10c92ccc7a6b9358f ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 06:46:23,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:46:23,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:46:23,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:46:23,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:46:23,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:46:23,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:46:23,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:46:23,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:46:23,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:46:23,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:46:23,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:46:23,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:46:23,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:46:23,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:46:23,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:46:23,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:46:23,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:46:23,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:46:23,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:46:23,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:46:23,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:46:23,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:46:23,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:46:23,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:46:23,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:46:23,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:46:23,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:46:23,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:46:23,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:46:23,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:46:23,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:46:23,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:46:23,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:46:23,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:46:23,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:46:23,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:46:23,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:46:23,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:46:23,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:46:23,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:46:23,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 06:46:23,985 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:46:23,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:46:23,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:46:23,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:46:23,986 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:46:23,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:46:23,987 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:46:23,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:46:23,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:46:23,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:46:23,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:46:23,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:46:23,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:46:23,988 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:46:23,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:46:23,989 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:46:23,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:46:23,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:46:23,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:46:23,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:46:23,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:46:23,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:46:23,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:46:23,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:46:23,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:46:23,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:46:23,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:46:23,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:46:23,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/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 -> 2b31afe6a0b1e539547810c10c92ccc7a6b9358f [2019-11-20 06:46:24,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:46:24,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:46:24,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:46:24,138 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:46:24,139 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:46:24,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2019-11-20 06:46:24,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/data/13e01dbd3/ab15ac3e226c4cdb98d2424ac46ba514/FLAG16da63710 [2019-11-20 06:46:24,652 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:46:24,652 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/sv-benchmarks/c/pthread-wmm/safe000_pso.oepc.i [2019-11-20 06:46:24,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/data/13e01dbd3/ab15ac3e226c4cdb98d2424ac46ba514/FLAG16da63710 [2019-11-20 06:46:24,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/data/13e01dbd3/ab15ac3e226c4cdb98d2424ac46ba514 [2019-11-20 06:46:24,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:46:24,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:46:24,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:46:24,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:46:24,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:46:24,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:46:24" (1/1) ... [2019-11-20 06:46:24,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0326d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:24, skipping insertion in model container [2019-11-20 06:46:24,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:46:24" (1/1) ... [2019-11-20 06:46:24,704 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:46:24,761 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:46:25,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:46:25,190 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:46:25,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:46:25,322 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:46:25,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25 WrapperNode [2019-11-20 06:46:25,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:46:25,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:46:25,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:46:25,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:46:25,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:46:25,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:46:25,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:46:25,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:46:25,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... [2019-11-20 06:46:25,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:46:25,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:46:25,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:46:25,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:46:25,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:46:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 06:46:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 06:46:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 06:46:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 06:46:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 06:46:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 06:46:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 06:46:25,501 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 06:46:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 06:46:25,501 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 06:46:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 06:46:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:46:25,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:46:25,504 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 06:46:25,838 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:46:25,838 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 06:46:25,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:25 BoogieIcfgContainer [2019-11-20 06:46:25,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:46:25,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:46:25,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:46:25,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:46:25,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:46:24" (1/3) ... [2019-11-20 06:46:25,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102242f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:46:25, skipping insertion in model container [2019-11-20 06:46:25,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:46:25" (2/3) ... [2019-11-20 06:46:25,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102242f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:46:25, skipping insertion in model container [2019-11-20 06:46:25,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:25" (3/3) ... [2019-11-20 06:46:25,846 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2019-11-20 06:46:25,890 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,891 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,891 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,891 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,892 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,892 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,893 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,893 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,893 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,893 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,894 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,894 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,894 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,895 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,895 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,895 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,895 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,896 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,896 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,896 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,896 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,897 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,897 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,897 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,898 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,898 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,898 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,898 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,899 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,899 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,899 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,899 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,900 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,900 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,900 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,900 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,901 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,901 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,901 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,901 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,902 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,902 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,902 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,903 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,903 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,903 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,903 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,904 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,904 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,904 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,904 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,905 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,905 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,905 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 06:46:25,944 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 06:46:25,944 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:46:25,951 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 06:46:25,961 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 06:46:25,978 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:46:25,978 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:46:25,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:46:25,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:46:25,978 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:46:25,979 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:46:25,979 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:46:25,979 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:46:25,994 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 75 transitions [2019-11-20 06:46:29,251 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 31744 states. [2019-11-20 06:46:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 31744 states. [2019-11-20 06:46:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 06:46:29,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:46:29,312 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:46:29,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:46:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:46:29,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1461473904, now seen corresponding path program 1 times [2019-11-20 06:46:29,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:46:29,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985156215] [2019-11-20 06:46:29,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:46:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:46:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:46:29,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985156215] [2019-11-20 06:46:29,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:46:29,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 06:46:29,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675838548] [2019-11-20 06:46:29,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 06:46:29,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:46:29,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 06:46:29,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:46:29,681 INFO L87 Difference]: Start difference. First operand 31744 states. Second operand 4 states. [2019-11-20 06:46:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:46:30,372 INFO L93 Difference]: Finished difference Result 33013 states and 103293 transitions. [2019-11-20 06:46:30,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:46:30,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-20 06:46:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:46:30,523 INFO L225 Difference]: With dead ends: 33013 [2019-11-20 06:46:30,523 INFO L226 Difference]: Without dead ends: 14275 [2019-11-20 06:46:30,525 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:46:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2019-11-20 06:46:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14275. [2019-11-20 06:46:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14275 states. [2019-11-20 06:46:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 44298 transitions. [2019-11-20 06:46:31,164 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 44298 transitions. Word has length 31 [2019-11-20 06:46:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:46:31,165 INFO L462 AbstractCegarLoop]: Abstraction has 14275 states and 44298 transitions. [2019-11-20 06:46:31,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 06:46:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 44298 transitions. [2019-11-20 06:46:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 06:46:31,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:46:31,192 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:46:31,192 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:46:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:46:31,200 INFO L82 PathProgramCache]: Analyzing trace with hash -334066509, now seen corresponding path program 1 times [2019-11-20 06:46:31,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:46:31,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583060367] [2019-11-20 06:46:31,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:46:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:46:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:46:31,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583060367] [2019-11-20 06:46:31,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:46:31,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 06:46:31,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863260609] [2019-11-20 06:46:31,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:46:31,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:46:31,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:46:31,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:46:31,400 INFO L87 Difference]: Start difference. First operand 14275 states and 44298 transitions. Second operand 5 states. [2019-11-20 06:46:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:46:31,729 INFO L93 Difference]: Finished difference Result 14275 states and 42111 transitions. [2019-11-20 06:46:31,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:46:31,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-20 06:46:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:46:31,796 INFO L225 Difference]: With dead ends: 14275 [2019-11-20 06:46:31,796 INFO L226 Difference]: Without dead ends: 12574 [2019-11-20 06:46:31,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:46:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2019-11-20 06:46:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 12574. [2019-11-20 06:46:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12574 states. [2019-11-20 06:46:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12574 states to 12574 states and 38061 transitions. [2019-11-20 06:46:32,323 INFO L78 Accepts]: Start accepts. Automaton has 12574 states and 38061 transitions. Word has length 32 [2019-11-20 06:46:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:46:32,324 INFO L462 AbstractCegarLoop]: Abstraction has 12574 states and 38061 transitions. [2019-11-20 06:46:32,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:46:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12574 states and 38061 transitions. [2019-11-20 06:46:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 06:46:32,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:46:32,354 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:46:32,354 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:46:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:46:32,354 INFO L82 PathProgramCache]: Analyzing trace with hash -405412949, now seen corresponding path program 1 times [2019-11-20 06:46:32,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:46:32,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045310510] [2019-11-20 06:46:32,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:46:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:46:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:46:32,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045310510] [2019-11-20 06:46:32,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:46:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 06:46:32,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740222691] [2019-11-20 06:46:32,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:46:32,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:46:32,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:46:32,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:46:32,517 INFO L87 Difference]: Start difference. First operand 12574 states and 38061 transitions. Second operand 6 states. [2019-11-20 06:46:32,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:46:32,802 INFO L93 Difference]: Finished difference Result 8929 states and 24939 transitions. [2019-11-20 06:46:32,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:46:32,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-20 06:46:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:46:32,827 INFO L225 Difference]: With dead ends: 8929 [2019-11-20 06:46:32,827 INFO L226 Difference]: Without dead ends: 7471 [2019-11-20 06:46:32,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:46:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2019-11-20 06:46:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7471. [2019-11-20 06:46:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7471 states. [2019-11-20 06:46:33,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 21051 transitions. [2019-11-20 06:46:33,275 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 21051 transitions. Word has length 33 [2019-11-20 06:46:33,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:46:33,275 INFO L462 AbstractCegarLoop]: Abstraction has 7471 states and 21051 transitions. [2019-11-20 06:46:33,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:46:33,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 21051 transitions. [2019-11-20 06:46:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:46:33,290 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:46:33,291 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:46:33,291 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:46:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:46:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash 744350998, now seen corresponding path program 1 times [2019-11-20 06:46:33,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:46:33,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563949103] [2019-11-20 06:46:33,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:46:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:46:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:46:33,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563949103] [2019-11-20 06:46:33,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:46:33,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 06:46:33,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775596789] [2019-11-20 06:46:33,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:46:33,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:46:33,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:46:33,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:46:33,421 INFO L87 Difference]: Start difference. First operand 7471 states and 21051 transitions. Second operand 6 states. [2019-11-20 06:46:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:46:33,637 INFO L93 Difference]: Finished difference Result 12655 states and 35496 transitions. [2019-11-20 06:46:33,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:46:33,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-20 06:46:33,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:46:33,660 INFO L225 Difference]: With dead ends: 12655 [2019-11-20 06:46:33,660 INFO L226 Difference]: Without dead ends: 8038 [2019-11-20 06:46:33,660 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:46:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2019-11-20 06:46:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 7228. [2019-11-20 06:46:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7228 states. [2019-11-20 06:46:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7228 states to 7228 states and 20322 transitions. [2019-11-20 06:46:33,861 INFO L78 Accepts]: Start accepts. Automaton has 7228 states and 20322 transitions. Word has length 34 [2019-11-20 06:46:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:46:33,862 INFO L462 AbstractCegarLoop]: Abstraction has 7228 states and 20322 transitions. [2019-11-20 06:46:33,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:46:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7228 states and 20322 transitions. [2019-11-20 06:46:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:46:33,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:46:33,876 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:46:33,877 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:46:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:46:33,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1489756496, now seen corresponding path program 2 times [2019-11-20 06:46:33,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:46:33,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237761264] [2019-11-20 06:46:33,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:46:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:46:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:46:34,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237761264] [2019-11-20 06:46:34,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:46:34,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 06:46:34,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080768291] [2019-11-20 06:46:34,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 06:46:34,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:46:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 06:46:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:46:34,045 INFO L87 Difference]: Start difference. First operand 7228 states and 20322 transitions. Second operand 8 states. [2019-11-20 06:46:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:46:34,247 INFO L93 Difference]: Finished difference Result 12169 states and 34200 transitions. [2019-11-20 06:46:34,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:46:34,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-20 06:46:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:46:34,267 INFO L225 Difference]: With dead ends: 12169 [2019-11-20 06:46:34,267 INFO L226 Difference]: Without dead ends: 7003 [2019-11-20 06:46:34,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:46:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2019-11-20 06:46:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 7003. [2019-11-20 06:46:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7003 states. [2019-11-20 06:46:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 19692 transitions. [2019-11-20 06:46:34,445 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 19692 transitions. Word has length 34 [2019-11-20 06:46:34,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:46:34,445 INFO L462 AbstractCegarLoop]: Abstraction has 7003 states and 19692 transitions. [2019-11-20 06:46:34,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 06:46:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 19692 transitions. [2019-11-20 06:46:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:46:34,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:46:34,459 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:46:34,459 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:46:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:46:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash -284820550, now seen corresponding path program 3 times [2019-11-20 06:46:34,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:46:34,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634197519] [2019-11-20 06:46:34,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:46:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:46:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:46:34,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634197519] [2019-11-20 06:46:34,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:46:34,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 06:46:34,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108682020] [2019-11-20 06:46:34,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 06:46:34,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:46:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 06:46:34,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:46:34,557 INFO L87 Difference]: Start difference. First operand 7003 states and 19692 transitions. Second operand 7 states. [2019-11-20 06:46:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:46:34,735 INFO L93 Difference]: Finished difference Result 11620 states and 32652 transitions. [2019-11-20 06:46:34,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 06:46:34,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2019-11-20 06:46:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:46:34,755 INFO L225 Difference]: With dead ends: 11620 [2019-11-20 06:46:34,755 INFO L226 Difference]: Without dead ends: 6922 [2019-11-20 06:46:34,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-20 06:46:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6922 states. [2019-11-20 06:46:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6922 to 6922. [2019-11-20 06:46:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6922 states. [2019-11-20 06:46:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6922 states to 6922 states and 19530 transitions. [2019-11-20 06:46:35,078 INFO L78 Accepts]: Start accepts. Automaton has 6922 states and 19530 transitions. Word has length 34 [2019-11-20 06:46:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:46:35,078 INFO L462 AbstractCegarLoop]: Abstraction has 6922 states and 19530 transitions. [2019-11-20 06:46:35,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 06:46:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6922 states and 19530 transitions. [2019-11-20 06:46:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:46:35,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:46:35,087 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:46:35,087 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:46:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:46:35,088 INFO L82 PathProgramCache]: Analyzing trace with hash -822676128, now seen corresponding path program 4 times [2019-11-20 06:46:35,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:46:35,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999557705] [2019-11-20 06:46:35,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:46:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:46:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:46:35,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999557705] [2019-11-20 06:46:35,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:46:35,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 06:46:35,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926909401] [2019-11-20 06:46:35,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 06:46:35,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:46:35,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 06:46:35,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 06:46:35,205 INFO L87 Difference]: Start difference. First operand 6922 states and 19530 transitions. Second operand 8 states. [2019-11-20 06:46:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:46:35,342 INFO L93 Difference]: Finished difference Result 5464 states and 15156 transitions. [2019-11-20 06:46:35,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 06:46:35,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-11-20 06:46:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:46:35,343 INFO L225 Difference]: With dead ends: 5464 [2019-11-20 06:46:35,343 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 06:46:35,344 INFO L630 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 [2019-11-20 06:46:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 06:46:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 06:46:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 06:46:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 06:46:35,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-11-20 06:46:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:46:35,345 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 06:46:35,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 06:46:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 06:46:35,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 06:46:35,348 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 06:46:35,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:46:35 BasicIcfg [2019-11-20 06:46:35,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:46:35,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:46:35,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:46:35,351 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:46:35,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:46:25" (3/4) ... [2019-11-20 06:46:35,356 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 06:46:35,369 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 06:46:35,369 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 06:46:35,369 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 06:46:35,386 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-20 06:46:35,386 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 06:46:35,386 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 06:46:35,423 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_663349ec-f284-49cb-adcb-ac48b3b30ad4/bin/uautomizer/witness.graphml [2019-11-20 06:46:35,424 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:46:35,426 INFO L168 Benchmark]: Toolchain (without parser) took 10744.62 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 796.9 MB). Free memory was 940.6 MB in the beginning and 1.6 GB in the end (delta: -657.7 MB). Peak memory consumption was 139.2 MB. Max. memory is 11.5 GB. [2019-11-20 06:46:35,426 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-11-20 06:46:35,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2019-11-20 06:46:35,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.89 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. [2019-11-20 06:46:35,428 INFO L168 Benchmark]: Boogie Preprocessor took 48.55 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. [2019-11-20 06:46:35,428 INFO L168 Benchmark]: RCFGBuilder took 398.32 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-11-20 06:46:35,429 INFO L168 Benchmark]: TraceAbstraction took 9510.32 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 651.7 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -513.4 MB). Peak memory consumption was 138.3 MB. Max. memory is 11.5 GB. [2019-11-20 06:46:35,429 INFO L168 Benchmark]: Witness Printer took 73.16 ms. Allocated memory is still 1.8 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-11-20 06:46:35,432 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 642.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.89 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. * Boogie Preprocessor took 48.55 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 398.32 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: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9510.32 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 651.7 MB). Free memory was 1.1 GB in the beginning and 1.6 GB in the end (delta: -513.4 MB). Peak memory consumption was 138.3 MB. Max. memory is 11.5 GB. * Witness Printer took 73.16 ms. Allocated memory is still 1.8 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 90 locations, 1 error locations. Result: SAFE, OverallTime: 9.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 633 SDtfs, 992 SDslu, 1594 SDs, 0 SdLazy, 292 SolverSat, 139 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31744occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 810 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 22959 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...