./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/16_peterson.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_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/16_peterson.i -s /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/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 fe2a87bf03514f77a2923708fa633129c30ac7f0 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:51:10,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:51:10,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:51:10,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:51:10,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:51:10,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:51:10,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:51:10,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:51:10,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:51:10,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:51:10,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:51:10,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:51:10,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:51:10,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:51:10,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:51:10,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:51:10,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:51:10,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:51:10,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:51:10,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:51:10,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:51:10,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:51:10,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:51:10,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:51:10,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:51:10,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:51:10,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:51:10,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:51:10,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:51:10,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:51:10,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:51:10,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:51:10,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:51:10,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:51:10,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:51:10,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:51:10,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:51:10,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:51:10,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:51:10,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:51:10,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:51:10,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:51:10,905 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:51:10,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:51:10,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:51:10,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:51:10,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:51:10,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:51:10,908 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:51:10,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:51:10,908 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:51:10,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:51:10,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:51:10,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:51:10,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:51:10,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:51:10,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:51:10,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:51:10,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:51:10,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:51:10,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:51:10,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:51:10,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:51:10,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:51:10,910 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_43f7c479-d77b-4b23-a258-fc5997c5b208/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 -> fe2a87bf03514f77a2923708fa633129c30ac7f0 [2019-12-07 15:51:11,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:51:11,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:51:11,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:51:11,029 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:51:11,030 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:51:11,030 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/../../sv-benchmarks/c/pthread-ext/16_peterson.i [2019-12-07 15:51:11,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/data/ca3967045/bb317d23f7ad473f8d9bec62d1b4243c/FLAG3032e23b1 [2019-12-07 15:51:11,555 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:51:11,555 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/sv-benchmarks/c/pthread-ext/16_peterson.i [2019-12-07 15:51:11,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/data/ca3967045/bb317d23f7ad473f8d9bec62d1b4243c/FLAG3032e23b1 [2019-12-07 15:51:11,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/data/ca3967045/bb317d23f7ad473f8d9bec62d1b4243c [2019-12-07 15:51:11,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:51:11,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:51:11,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:51:11,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:51:11,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:51:11,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:11,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c43023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11, skipping insertion in model container [2019-12-07 15:51:11,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:11,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:51:11,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:51:11,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:51:11,872 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:51:11,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:51:11,951 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:51:11,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11 WrapperNode [2019-12-07 15:51:11,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:51:11,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:51:11,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:51:11,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:51:11,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:11,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:11,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:51:11,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:51:11,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:51:11,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:51:11,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:11,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:11,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:11,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:12,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:12,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:12,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... [2019-12-07 15:51:12,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:51:12,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:51:12,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:51:12,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:51:12,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/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 15:51:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-07 15:51:12,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-07 15:51:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:51:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:51:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:51:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:51:12,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:51:12,054 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 15:51:12,221 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:51:12,221 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 15:51:12,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:51:12 BoogieIcfgContainer [2019-12-07 15:51:12,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:51:12,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:51:12,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:51:12,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:51:12,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:51:11" (1/3) ... [2019-12-07 15:51:12,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517829c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:51:12, skipping insertion in model container [2019-12-07 15:51:12,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:51:11" (2/3) ... [2019-12-07 15:51:12,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517829c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:51:12, skipping insertion in model container [2019-12-07 15:51:12,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:51:12" (3/3) ... [2019-12-07 15:51:12,226 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2019-12-07 15:51:12,233 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 15:51:12,233 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:51:12,237 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 15:51:12,237 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 15:51:12,252 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:51:12,252 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:51:12,253 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:51:12,253 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:51:12,253 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:51:12,253 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:51:12,264 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 15:51:12,276 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:51:12,277 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:51:12,277 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:51:12,277 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:51:12,277 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:51:12,277 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:51:12,277 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:51:12,277 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:51:12,285 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions [2019-12-07 15:51:12,286 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-12-07 15:51:12,307 INFO L134 PetriNetUnfolder]: 6/50 cut-off events. [2019-12-07 15:51:12,307 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 15:51:12,312 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs. 3/45 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-12-07 15:51:12,313 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-12-07 15:51:12,321 INFO L134 PetriNetUnfolder]: 6/50 cut-off events. [2019-12-07 15:51:12,321 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 15:51:12,322 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs. 3/45 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-12-07 15:51:12,323 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2019-12-07 15:51:12,324 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 15:51:12,793 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1164 [2019-12-07 15:51:12,793 INFO L214 etLargeBlockEncoding]: Total number of compositions: 34 [2019-12-07 15:51:12,796 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 23 transitions [2019-12-07 15:51:12,804 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2019-12-07 15:51:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2019-12-07 15:51:12,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:51:12,809 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:51:12,809 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:51:12,810 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:51:12,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:51:12,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1914205477, now seen corresponding path program 1 times [2019-12-07 15:51:12,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:51:12,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356359866] [2019-12-07 15:51:12,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:51:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:51:12,909 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 15:51:12,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356359866] [2019-12-07 15:51:12,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:51:12,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:51:12,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395078817] [2019-12-07 15:51:12,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:51:12,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:51:12,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:51:12,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:51:12,925 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2019-12-07 15:51:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:51:12,936 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2019-12-07 15:51:12,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:51:12,937 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 15:51:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:51:12,945 INFO L225 Difference]: With dead ends: 74 [2019-12-07 15:51:12,945 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 15:51:12,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:51:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 15:51:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-12-07 15:51:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-12-07 15:51:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2019-12-07 15:51:12,973 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 6 [2019-12-07 15:51:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:51:12,973 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 134 transitions. [2019-12-07 15:51:12,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:51:12,974 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 134 transitions. [2019-12-07 15:51:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:51:12,974 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:51:12,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:51:12,974 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:51:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:51:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash -789185163, now seen corresponding path program 1 times [2019-12-07 15:51:12,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:51:12,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456475622] [2019-12-07 15:51:12,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:51:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:51:13,011 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 15:51:13,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456475622] [2019-12-07 15:51:13,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:51:13,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:51:13,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582234142] [2019-12-07 15:51:13,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:51:13,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:51:13,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:51:13,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:51:13,014 INFO L87 Difference]: Start difference. First operand 68 states and 134 transitions. Second operand 3 states. [2019-12-07 15:51:13,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:51:13,030 INFO L93 Difference]: Finished difference Result 73 states and 134 transitions. [2019-12-07 15:51:13,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:51:13,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 15:51:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:51:13,032 INFO L225 Difference]: With dead ends: 73 [2019-12-07 15:51:13,032 INFO L226 Difference]: Without dead ends: 58 [2019-12-07 15:51:13,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:51:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-07 15:51:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-12-07 15:51:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 15:51:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2019-12-07 15:51:13,039 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2019-12-07 15:51:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:51:13,039 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2019-12-07 15:51:13,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:51:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2019-12-07 15:51:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:51:13,040 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:51:13,040 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:51:13,040 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:51:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:51:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash -773727376, now seen corresponding path program 1 times [2019-12-07 15:51:13,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:51:13,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823140810] [2019-12-07 15:51:13,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:51:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:51:13,066 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 15:51:13,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823140810] [2019-12-07 15:51:13,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:51:13,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:51:13,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365384882] [2019-12-07 15:51:13,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:51:13,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:51:13,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:51:13,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:51:13,068 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 3 states. [2019-12-07 15:51:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:51:13,079 INFO L93 Difference]: Finished difference Result 50 states and 88 transitions. [2019-12-07 15:51:13,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:51:13,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 15:51:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:51:13,080 INFO L225 Difference]: With dead ends: 50 [2019-12-07 15:51:13,081 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 15:51:13,081 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:51:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 15:51:13,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-12-07 15:51:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 15:51:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 69 transitions. [2019-12-07 15:51:13,086 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 69 transitions. Word has length 7 [2019-12-07 15:51:13,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:51:13,087 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 69 transitions. [2019-12-07 15:51:13,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:51:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2019-12-07 15:51:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:51:13,087 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:51:13,088 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:51:13,088 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:51:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:51:13,088 INFO L82 PathProgramCache]: Analyzing trace with hash -426072120, now seen corresponding path program 1 times [2019-12-07 15:51:13,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:51:13,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103998411] [2019-12-07 15:51:13,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:51:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:51:13,121 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 15:51:13,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103998411] [2019-12-07 15:51:13,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:51:13,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:51:13,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921965759] [2019-12-07 15:51:13,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:51:13,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:51:13,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:51:13,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:51:13,123 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 4 states. [2019-12-07 15:51:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:51:13,139 INFO L93 Difference]: Finished difference Result 45 states and 78 transitions. [2019-12-07 15:51:13,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:51:13,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 15:51:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:51:13,140 INFO L225 Difference]: With dead ends: 45 [2019-12-07 15:51:13,140 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 15:51:13,140 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 15:51:13,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 15:51:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 15:51:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 15:51:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2019-12-07 15:51:13,144 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 11 [2019-12-07 15:51:13,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:51:13,144 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2019-12-07 15:51:13,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:51:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2019-12-07 15:51:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:51:13,144 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:51:13,145 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:51:13,145 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:51:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:51:13,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1603258680, now seen corresponding path program 2 times [2019-12-07 15:51:13,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:51:13,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361838857] [2019-12-07 15:51:13,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:51:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:51:13,175 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 15:51:13,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361838857] [2019-12-07 15:51:13,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:51:13,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:51:13,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774614562] [2019-12-07 15:51:13,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:51:13,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:51:13,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:51:13,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:51:13,176 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2019-12-07 15:51:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:51:13,184 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2019-12-07 15:51:13,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:51:13,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 15:51:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:51:13,185 INFO L225 Difference]: With dead ends: 17 [2019-12-07 15:51:13,185 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:51:13,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 15:51:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:51:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:51:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:51:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:51:13,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 15:51:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:51:13,186 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:51:13,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:51:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:51:13,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:51:13,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:51:13 BasicIcfg [2019-12-07 15:51:13,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:51:13,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:51:13,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:51:13,189 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:51:13,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:51:12" (3/4) ... [2019-12-07 15:51:13,192 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:51:13,196 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-12-07 15:51:13,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 15:51:13,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:51:13,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:51:13,228 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_43f7c479-d77b-4b23-a258-fc5997c5b208/bin/uautomizer/witness.graphml [2019-12-07 15:51:13,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:51:13,231 INFO L168 Benchmark]: Toolchain (without parser) took 1654.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 938.0 MB in the beginning and 886.7 MB in the end (delta: 51.3 MB). Peak memory consumption was 152.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:51:13,231 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:51:13,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -135.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:51:13,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.09 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:51:13,233 INFO L168 Benchmark]: Boogie Preprocessor took 20.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:51:13,233 INFO L168 Benchmark]: RCFGBuilder took 213.53 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:51:13,234 INFO L168 Benchmark]: TraceAbstraction took 966.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 886.7 MB in the end (delta: 158.0 MB). Peak memory consumption was 158.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:51:13,234 INFO L168 Benchmark]: Witness Printer took 39.77 ms. Allocated memory is still 1.1 GB. Free memory is still 886.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:51:13,236 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 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 376.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -135.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.09 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 213.53 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 966.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 886.7 MB in the end (delta: 158.0 MB). Peak memory consumption was 158.0 MB. Max. memory is 11.5 GB. * Witness Printer took 39.77 ms. Allocated memory is still 1.1 GB. Free memory is still 886.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 49 ProgramPointsBefore, 20 ProgramPointsAfterwards, 51 TransitionsBefore, 23 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 320 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1164 CheckedPairsTotal, 34 TotalNumberOfCompositions - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 46 SDslu, 35 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 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...