./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/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 0c32323bf3299550f710729dda6257392363a4b6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:11:06,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:11:06,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:11:06,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:11:06,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:11:06,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:11:06,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:11:06,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:11:06,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:11:06,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:11:06,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:11:06,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:11:06,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:11:06,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:11:06,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:11:06,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:11:06,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:11:06,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:11:06,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:11:06,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:11:06,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:11:06,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:11:06,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:11:06,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:11:06,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:11:06,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:11:06,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:11:06,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:11:06,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:11:06,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:11:06,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:11:06,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:11:06,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:11:06,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:11:06,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:11:06,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:11:06,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:11:06,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:11:06,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:11:06,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:11:06,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:11:06,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:11:06,066 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:11:06,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:11:06,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:11:06,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:11:06,067 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:11:06,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:11:06,068 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:11:06,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:11:06,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:11:06,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:11:06,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:11:06,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:11:06,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:11:06,069 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:11:06,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:11:06,069 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:11:06,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:11:06,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:11:06,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:11:06,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:11:06,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:11:06,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:11:06,071 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_3c81d8a4-ae0e-4887-b89f-410e17221884/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 -> 0c32323bf3299550f710729dda6257392363a4b6 [2019-12-07 18:11:06,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:11:06,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:11:06,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:11:06,188 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:11:06,188 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:11:06,189 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2019-12-07 18:11:06,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/data/e20979063/881d141059d24e149da46506839100ff/FLAGce3edb15e [2019-12-07 18:11:06,678 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:11:06,679 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2019-12-07 18:11:06,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/data/e20979063/881d141059d24e149da46506839100ff/FLAGce3edb15e [2019-12-07 18:11:06,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/data/e20979063/881d141059d24e149da46506839100ff [2019-12-07 18:11:06,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:11:06,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:11:06,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:11:06,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:11:06,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:11:06,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:11:06" (1/1) ... [2019-12-07 18:11:06,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd42a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:06, skipping insertion in model container [2019-12-07 18:11:06,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:11:06" (1/1) ... [2019-12-07 18:11:06,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:11:06,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:11:06,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:11:06,985 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:11:07,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:11:07,063 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:11:07,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07 WrapperNode [2019-12-07 18:11:07,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:11:07,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:11:07,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:11:07,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:11:07,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:11:07,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:11:07,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:11:07,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:11:07,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... [2019-12-07 18:11:07,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:11:07,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:11:07,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:11:07,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:11:07,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/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 [2019-12-07 18:11:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 18:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 18:11:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 18:11:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 18:11:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 18:11:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 18:11:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 18:11:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 18:11:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:11:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:11:07,174 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 18:11:07,356 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:11:07,356 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:11:07,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:11:07 BoogieIcfgContainer [2019-12-07 18:11:07,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:11:07,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:11:07,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:11:07,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:11:07,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:11:06" (1/3) ... [2019-12-07 18:11:07,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb163d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:11:07, skipping insertion in model container [2019-12-07 18:11:07,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:11:07" (2/3) ... [2019-12-07 18:11:07,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb163d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:11:07, skipping insertion in model container [2019-12-07 18:11:07,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:11:07" (3/3) ... [2019-12-07 18:11:07,361 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2019-12-07 18:11:07,367 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 18:11:07,367 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:11:07,371 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:11:07,372 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 18:11:07,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,389 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,389 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,390 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,391 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,391 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,391 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:11:07,403 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 18:11:07,415 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:11:07,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:11:07,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:11:07,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:11:07,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:11:07,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:11:07,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:11:07,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:11:07,424 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-07 18:11:07,425 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 18:11:07,451 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 18:11:07,451 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:11:07,456 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:11:07,459 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 18:11:07,468 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 18:11:07,468 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:11:07,469 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:11:07,471 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 18:11:07,471 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 18:11:08,397 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-12-07 18:11:08,415 INFO L206 etLargeBlockEncoding]: Checked pairs total: 504 [2019-12-07 18:11:08,415 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-07 18:11:08,418 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 18:11:08,427 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 18:11:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 18:11:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 18:11:08,435 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:11:08,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:11:08,436 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:11:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:11:08,442 INFO L82 PathProgramCache]: Analyzing trace with hash -411766657, now seen corresponding path program 1 times [2019-12-07 18:11:08,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:11:08,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437031074] [2019-12-07 18:11:08,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:11:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:11:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:11:08,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437031074] [2019-12-07 18:11:08,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:11:08,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 18:11:08,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750759189] [2019-12-07 18:11:08,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:11:08,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:11:08,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:11:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:11:08,637 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-07 18:11:08,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:11:08,661 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2019-12-07 18:11:08,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:11:08,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 18:11:08,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:11:08,671 INFO L225 Difference]: With dead ends: 57 [2019-12-07 18:11:08,671 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 18:11:08,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:11:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 18:11:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2019-12-07 18:11:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 18:11:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 54 transitions. [2019-12-07 18:11:08,697 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 54 transitions. Word has length 8 [2019-12-07 18:11:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:11:08,698 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 54 transitions. [2019-12-07 18:11:08,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:11:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2019-12-07 18:11:08,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:11:08,699 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:11:08,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:11:08,699 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:11:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:11:08,699 INFO L82 PathProgramCache]: Analyzing trace with hash 116613460, now seen corresponding path program 1 times [2019-12-07 18:11:08,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:11:08,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279156365] [2019-12-07 18:11:08,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:11:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:11:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:11:08,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279156365] [2019-12-07 18:11:08,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:11:08,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:11:08,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11257371] [2019-12-07 18:11:08,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:11:08,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:11:08,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:11:08,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:11:08,772 INFO L87 Difference]: Start difference. First operand 34 states and 54 transitions. Second operand 5 states. [2019-12-07 18:11:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:11:08,806 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2019-12-07 18:11:08,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:11:08,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 18:11:08,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:11:08,807 INFO L225 Difference]: With dead ends: 37 [2019-12-07 18:11:08,807 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 18:11:08,808 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:11:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 18:11:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 18:11:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 18:11:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2019-12-07 18:11:08,811 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2019-12-07 18:11:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:11:08,811 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2019-12-07 18:11:08,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:11:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-12-07 18:11:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:11:08,811 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:11:08,811 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:11:08,812 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:11:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:11:08,812 INFO L82 PathProgramCache]: Analyzing trace with hash 934712652, now seen corresponding path program 1 times [2019-12-07 18:11:08,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:11:08,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143234632] [2019-12-07 18:11:08,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:11:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:11:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:11:08,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143234632] [2019-12-07 18:11:08,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:11:08,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:11:08,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594646510] [2019-12-07 18:11:08,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:11:08,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:11:08,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:11:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:11:08,869 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 6 states. [2019-12-07 18:11:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:11:08,907 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-12-07 18:11:08,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:11:08,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 18:11:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:11:08,908 INFO L225 Difference]: With dead ends: 25 [2019-12-07 18:11:08,908 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 18:11:08,908 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:11:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 18:11:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 18:11:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 18:11:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-07 18:11:08,910 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-07 18:11:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:11:08,910 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 18:11:08,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:11:08,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-07 18:11:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:11:08,910 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:11:08,911 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:11:08,911 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:11:08,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:11:08,911 INFO L82 PathProgramCache]: Analyzing trace with hash -977833272, now seen corresponding path program 1 times [2019-12-07 18:11:08,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:11:08,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127798630] [2019-12-07 18:11:08,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:11:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:11:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:11:08,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127798630] [2019-12-07 18:11:08,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:11:08,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:11:08,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55451049] [2019-12-07 18:11:08,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:11:08,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:11:08,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:11:08,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:11:08,956 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-07 18:11:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:11:08,965 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-12-07 18:11:08,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:11:08,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:11:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:11:08,966 INFO L225 Difference]: With dead ends: 20 [2019-12-07 18:11:08,966 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 18:11:08,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:11:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 18:11:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 18:11:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 18:11:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 18:11:08,968 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-07 18:11:08,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:11:08,968 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 18:11:08,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:11:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 18:11:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:11:08,968 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:11:08,968 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:11:08,969 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:11:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:11:08,969 INFO L82 PathProgramCache]: Analyzing trace with hash -462405218, now seen corresponding path program 2 times [2019-12-07 18:11:08,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:11:08,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693098069] [2019-12-07 18:11:08,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:11:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:11:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:11:09,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693098069] [2019-12-07 18:11:09,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:11:09,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:11:09,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151496233] [2019-12-07 18:11:09,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:11:09,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:11:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:11:09,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:11:09,012 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2019-12-07 18:11:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:11:09,021 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 18:11:09,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:11:09,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:11:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:11:09,021 INFO L225 Difference]: With dead ends: 11 [2019-12-07 18:11:09,021 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:11:09,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:11:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:11:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:11:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:11:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:11:09,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 18:11:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:11:09,022 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:11:09,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:11:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:11:09,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:11:09,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:11:09 BasicIcfg [2019-12-07 18:11:09,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:11:09,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:11:09,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:11:09,026 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:11:09,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:11:07" (3/4) ... [2019-12-07 18:11:09,028 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:11:09,032 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 18:11:09,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 18:11:09,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 18:11:09,036 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 18:11:09,036 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 18:11:09,036 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:11:09,065 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3c81d8a4-ae0e-4887-b89f-410e17221884/bin/uautomizer/witness.graphml [2019-12-07 18:11:09,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:11:09,067 INFO L168 Benchmark]: Toolchain (without parser) took 2366.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.3 MB in the beginning and 997.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:11:09,067 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:11:09,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -123.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:11:09,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:11:09,068 INFO L168 Benchmark]: Boogie Preprocessor took 19.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:11:09,069 INFO L168 Benchmark]: RCFGBuilder took 239.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:11:09,069 INFO L168 Benchmark]: TraceAbstraction took 1667.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:11:09,069 INFO L168 Benchmark]: Witness Printer took 39.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:11:09,072 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -123.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 239.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1667.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Witness Printer took 39.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 246 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 504 CheckedPairsTotal, 44 TotalNumberOfCompositions - 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 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 55 SDslu, 31 SDs, 0 SdLazy, 46 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...