./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/19_time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/19_time_var_mutex.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/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 b6e5b05d1d8a90ddac5eb7cbebfd54f127d9dc56 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:48,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:48,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:48,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:48,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:48,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:48,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:48,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:48,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:48,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:48,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:48,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:48,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:48,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:48,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:48,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:48,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:48,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:48,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:48,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:48,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:48,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:48,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:48,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:48,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:48,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:48,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:48,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:48,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:48,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:48,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:48,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:48,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:48,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:48,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:48,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:48,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:48,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:48,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:48,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:48,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:48,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:48,621 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:48,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:48,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:48,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:48,623 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:48,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:48,624 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:48,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:48,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:48,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:48,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:48,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:48,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:48,625 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:48,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:48,625 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:48,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:48,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:48,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:48,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:48,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:48,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:48,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:48,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:48,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:48,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:48,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:48,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:48,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/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 -> b6e5b05d1d8a90ddac5eb7cbebfd54f127d9dc56 [2019-10-22 08:56:48,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:48,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:48,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:48,666 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:48,666 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:48,667 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/19_time_var_mutex.i [2019-10-22 08:56:48,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/data/24baea0b1/257e36f77d574fbcbc5b39713f3b5b3b/FLAG38f0cf230 [2019-10-22 08:56:49,158 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:49,158 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/sv-benchmarks/c/pthread-ext/19_time_var_mutex.i [2019-10-22 08:56:49,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/data/24baea0b1/257e36f77d574fbcbc5b39713f3b5b3b/FLAG38f0cf230 [2019-10-22 08:56:49,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/data/24baea0b1/257e36f77d574fbcbc5b39713f3b5b3b [2019-10-22 08:56:49,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:49,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:49,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:49,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:49,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:49,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64129687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:49, skipping insertion in model container [2019-10-22 08:56:49,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:49" (1/1) ... [2019-10-22 08:56:49,538 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:49,569 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:49,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:49,928 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:49,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:50,036 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:50,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50 WrapperNode [2019-10-22 08:56:50,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:50,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:50,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:50,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:50,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:50,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:50,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:50,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:50,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... [2019-10-22 08:56:50,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:50,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:50,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:50,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:50,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:56:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-22 08:56:50,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-22 08:56:50,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 08:56:50,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:50,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:50,159 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 08:56:50,289 INFO L1490 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-10-22 08:56:50,296 INFO L1490 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel#2 [2019-10-22 08:56:50,297 INFO L1490 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-10-22 08:56:50,298 INFO L1490 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2019-10-22 08:56:50,378 INFO L1490 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-10-22 08:56:50,380 INFO L1490 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-10-22 08:56:50,426 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:50,426 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:56:50,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:50 BoogieIcfgContainer [2019-10-22 08:56:50,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:50,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:50,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:50,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:50,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:49" (1/3) ... [2019-10-22 08:56:50,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9b26fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:50, skipping insertion in model container [2019-10-22 08:56:50,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:50" (2/3) ... [2019-10-22 08:56:50,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9b26fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:50, skipping insertion in model container [2019-10-22 08:56:50,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:50" (3/3) ... [2019-10-22 08:56:50,434 INFO L109 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2019-10-22 08:56:50,461 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,464 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,465 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,465 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,465 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,465 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,465 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,465 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_acquire_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,465 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,466 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,466 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,466 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,466 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_acquire_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,466 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,467 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,467 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,467 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,467 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,467 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_release_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,468 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,468 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,468 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,468 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,468 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1___VERIFIER_atomic_release_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,469 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,469 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:56:50,476 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:56:50,476 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:50,487 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 08:56:50,497 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 08:56:50,516 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:50,516 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:50,516 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:50,516 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:50,516 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:50,516 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:50,516 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:50,517 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:50,524 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 48 transitions [2019-10-22 08:56:50,553 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 254 states. [2019-10-22 08:56:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-22 08:56:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:56:50,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:50,569 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:50,570 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:50,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2058462238, now seen corresponding path program 1 times [2019-10-22 08:56:50,582 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968983344] [2019-10-22 08:56:50,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:50,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968983344] [2019-10-22 08:56:50,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:50,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:50,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286844953] [2019-10-22 08:56:50,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:50,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:50,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:50,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:50,794 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2019-10-22 08:56:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:50,823 INFO L93 Difference]: Finished difference Result 254 states and 474 transitions. [2019-10-22 08:56:50,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:50,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 08:56:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:50,834 INFO L225 Difference]: With dead ends: 254 [2019-10-22 08:56:50,835 INFO L226 Difference]: Without dead ends: 214 [2019-10-22 08:56:50,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-10-22 08:56:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2019-10-22 08:56:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2019-10-22 08:56:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 390 transitions. [2019-10-22 08:56:50,884 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 390 transitions. Word has length 19 [2019-10-22 08:56:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:50,885 INFO L462 AbstractCegarLoop]: Abstraction has 214 states and 390 transitions. [2019-10-22 08:56:50,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:50,885 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 390 transitions. [2019-10-22 08:56:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:56:50,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:50,886 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:50,886 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1827295107, now seen corresponding path program 1 times [2019-10-22 08:56:50,887 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941225726] [2019-10-22 08:56:50,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,887 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:50,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941225726] [2019-10-22 08:56:50,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:50,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:50,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452042079] [2019-10-22 08:56:50,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:50,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:50,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:50,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:50,953 INFO L87 Difference]: Start difference. First operand 214 states and 390 transitions. Second operand 3 states. [2019-10-22 08:56:50,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:50,976 INFO L93 Difference]: Finished difference Result 225 states and 391 transitions. [2019-10-22 08:56:50,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:50,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-22 08:56:50,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:50,978 INFO L225 Difference]: With dead ends: 225 [2019-10-22 08:56:50,978 INFO L226 Difference]: Without dead ends: 165 [2019-10-22 08:56:50,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-22 08:56:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 153. [2019-10-22 08:56:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-22 08:56:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 259 transitions. [2019-10-22 08:56:50,990 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 259 transitions. Word has length 21 [2019-10-22 08:56:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:50,991 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 259 transitions. [2019-10-22 08:56:50,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 259 transitions. [2019-10-22 08:56:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:56:50,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:50,992 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:50,992 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash -65983192, now seen corresponding path program 1 times [2019-10-22 08:56:50,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:50,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629038281] [2019-10-22 08:56:50,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:50,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:51,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629038281] [2019-10-22 08:56:51,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:51,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:51,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46849909] [2019-10-22 08:56:51,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:51,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:51,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:51,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:51,050 INFO L87 Difference]: Start difference. First operand 153 states and 259 transitions. Second operand 3 states. [2019-10-22 08:56:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:51,073 INFO L93 Difference]: Finished difference Result 141 states and 229 transitions. [2019-10-22 08:56:51,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:51,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 08:56:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:51,075 INFO L225 Difference]: With dead ends: 141 [2019-10-22 08:56:51,075 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 08:56:51,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 08:56:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-22 08:56:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-22 08:56:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 170 transitions. [2019-10-22 08:56:51,082 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 170 transitions. Word has length 23 [2019-10-22 08:56:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:51,083 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 170 transitions. [2019-10-22 08:56:51,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 170 transitions. [2019-10-22 08:56:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:56:51,084 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:51,084 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:51,084 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:51,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1828187716, now seen corresponding path program 1 times [2019-10-22 08:56:51,085 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:51,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972970473] [2019-10-22 08:56:51,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:51,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972970473] [2019-10-22 08:56:51,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:51,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:51,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879833722] [2019-10-22 08:56:51,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:51,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:51,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:51,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:51,142 INFO L87 Difference]: Start difference. First operand 109 states and 170 transitions. Second operand 3 states. [2019-10-22 08:56:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:51,148 INFO L93 Difference]: Finished difference Result 109 states and 167 transitions. [2019-10-22 08:56:51,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:51,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-22 08:56:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:51,150 INFO L225 Difference]: With dead ends: 109 [2019-10-22 08:56:51,150 INFO L226 Difference]: Without dead ends: 91 [2019-10-22 08:56:51,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-10-22 08:56:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2019-10-22 08:56:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-22 08:56:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 134 transitions. [2019-10-22 08:56:51,157 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 134 transitions. Word has length 28 [2019-10-22 08:56:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:51,157 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 134 transitions. [2019-10-22 08:56:51,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 134 transitions. [2019-10-22 08:56:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:56:51,158 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:51,158 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:51,158 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:51,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:51,159 INFO L82 PathProgramCache]: Analyzing trace with hash 146340796, now seen corresponding path program 1 times [2019-10-22 08:56:51,159 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:51,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321290653] [2019-10-22 08:56:51,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:51,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:51,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321290653] [2019-10-22 08:56:51,205 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:51,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:51,205 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550781259] [2019-10-22 08:56:51,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:51,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:51,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:51,206 INFO L87 Difference]: Start difference. First operand 91 states and 134 transitions. Second operand 4 states. [2019-10-22 08:56:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:51,261 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-10-22 08:56:51,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:51,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-22 08:56:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:51,262 INFO L225 Difference]: With dead ends: 35 [2019-10-22 08:56:51,262 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:56:51,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:51,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:56:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:56:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:56:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:56:51,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-10-22 08:56:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:51,263 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:51,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:51,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:56:51,267 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:56:51,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:51 BasicIcfg [2019-10-22 08:56:51,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:51,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:51,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:51,271 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:51,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:50" (3/4) ... [2019-10-22 08:56:51,275 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:56:51,281 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-10-22 08:56:51,285 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 08:56:51,285 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:56:51,322 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ced3e3fb-7d0f-47d8-9350-fef1a06fc949/bin/uautomizer/witness.graphml [2019-10-22 08:56:51,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:51,326 INFO L168 Benchmark]: Toolchain (without parser) took 1799.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 939.1 MB in the beginning and 1.0 GB in the end (delta: -87.7 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,327 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:51,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:51,328 INFO L168 Benchmark]: Boogie Preprocessor took 33.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:51,328 INFO L168 Benchmark]: RCFGBuilder took 316.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,328 INFO L168 Benchmark]: TraceAbstraction took 840.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:51,328 INFO L168 Benchmark]: Witness Printer took 54.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:51,330 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 510.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.2 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -188.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 316.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 840.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 11.5 GB. * Witness Printer took 54.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 699]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 708]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 699]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 3 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 120 SDslu, 118 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4442 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...