./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.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_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/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 1bcf8d19b07f56aa4c460429cb82ce4e22323cc2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:55,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:56,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:56,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:56,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:56,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:56,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:56,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:56,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:56,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:56,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:56,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:56,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:56,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:56,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:56,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:56,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:56,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:56,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:56,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:56,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:56,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:56,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:56,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:56,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:56,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:56,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:56,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:56,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:56,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:56,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:56,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:56,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:56,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:56,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:56,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:56,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:56,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:56,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:56,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:56,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:56,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:56,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:56,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:56,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:56,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:56,076 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:56,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:56,076 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:56,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:56,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:56,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:56,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:56,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:56,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:56,077 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:56,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:56,077 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:56,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:56,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:56,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:56,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:56,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:56,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:56,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:56,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:56,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:56,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:56,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:56,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:56,079 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_1454f053-33d0-42c9-b148-94606c6622f0/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 -> 1bcf8d19b07f56aa4c460429cb82ce4e22323cc2 [2019-10-22 09:02:56,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:56,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:56,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:56,122 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:56,122 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:56,123 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i [2019-10-22 09:02:56,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/data/d572d756a/38d0f52ce51c452a92addcaa8306025d/FLAG6ce0255a1 [2019-10-22 09:02:56,673 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:56,674 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/sv-benchmarks/c/pthread-wmm/safe011_tso.opt.i [2019-10-22 09:02:56,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/data/d572d756a/38d0f52ce51c452a92addcaa8306025d/FLAG6ce0255a1 [2019-10-22 09:02:57,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/data/d572d756a/38d0f52ce51c452a92addcaa8306025d [2019-10-22 09:02:57,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:57,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:57,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:57,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:57,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:57,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cafd39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57, skipping insertion in model container [2019-10-22 09:02:57,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,213 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:57,257 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:57,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:57,733 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:57,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:57,870 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:57,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57 WrapperNode [2019-10-22 09:02:57,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:57,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:57,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:57,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:57,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:57,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:57,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:57,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:57,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... [2019-10-22 09:02:57,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:57,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:57,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:57,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:57,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:58,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:02:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 09:02:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:02:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 09:02:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 09:02:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 09:02:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 09:02:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 09:02:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 09:02:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 09:02:58,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:58,036 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 09:02:58,404 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:58,405 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:02:58,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:58 BoogieIcfgContainer [2019-10-22 09:02:58,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:58,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:58,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:58,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:58,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:57" (1/3) ... [2019-10-22 09:02:58,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7fb150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:58, skipping insertion in model container [2019-10-22 09:02:58,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:57" (2/3) ... [2019-10-22 09:02:58,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7fb150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:58, skipping insertion in model container [2019-10-22 09:02:58,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:58" (3/3) ... [2019-10-22 09:02:58,414 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2019-10-22 09:02:58,461 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,461 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,462 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,462 WARN L315 ript$VariableManager]: TermVariabe Thread1_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,462 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,462 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,463 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,463 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,463 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,463 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,463 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,464 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,464 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,464 WARN L315 ript$VariableManager]: TermVariabe Thread2_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,464 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,464 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,465 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,465 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,465 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,465 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,465 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,466 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,466 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,466 WARN L315 ript$VariableManager]: TermVariabe Thread0_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,466 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,466 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,467 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,467 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,468 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,468 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:58,484 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 09:02:58,484 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:58,492 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:02:58,505 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:02:58,526 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:58,527 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:58,527 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:58,527 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:58,528 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:58,528 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:58,528 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:58,528 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:58,541 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 52 transitions [2019-10-22 09:02:58,689 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2384 states. [2019-10-22 09:02:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states. [2019-10-22 09:02:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:02:58,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,713 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,715 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1361948029, now seen corresponding path program 1 times [2019-10-22 09:02:58,730 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236552392] [2019-10-22 09:02:58,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236552392] [2019-10-22 09:02:59,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:59,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:59,078 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932808179] [2019-10-22 09:02:59,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:59,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:59,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:59,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:59,103 INFO L87 Difference]: Start difference. First operand 2384 states. Second operand 4 states. [2019-10-22 09:02:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,222 INFO L93 Difference]: Finished difference Result 2492 states and 8068 transitions. [2019-10-22 09:02:59,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:59,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-10-22 09:02:59,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,250 INFO L225 Difference]: With dead ends: 2492 [2019-10-22 09:02:59,250 INFO L226 Difference]: Without dead ends: 1127 [2019-10-22 09:02:59,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2019-10-22 09:02:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2019-10-22 09:02:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2019-10-22 09:02:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 3557 transitions. [2019-10-22 09:02:59,385 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 3557 transitions. Word has length 29 [2019-10-22 09:02:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,386 INFO L462 AbstractCegarLoop]: Abstraction has 1127 states and 3557 transitions. [2019-10-22 09:02:59,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 3557 transitions. [2019-10-22 09:02:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 09:02:59,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,390 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,390 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:59,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,391 INFO L82 PathProgramCache]: Analyzing trace with hash -648251915, now seen corresponding path program 1 times [2019-10-22 09:02:59,391 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:59,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558771080] [2019-10-22 09:02:59,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558771080] [2019-10-22 09:02:59,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:59,550 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:59,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790183261] [2019-10-22 09:02:59,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:59,552 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:59,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:59,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:59,553 INFO L87 Difference]: Start difference. First operand 1127 states and 3557 transitions. Second operand 5 states. [2019-10-22 09:02:59,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,650 INFO L93 Difference]: Finished difference Result 1167 states and 3551 transitions. [2019-10-22 09:02:59,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:59,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 09:02:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,657 INFO L225 Difference]: With dead ends: 1167 [2019-10-22 09:02:59,657 INFO L226 Difference]: Without dead ends: 1043 [2019-10-22 09:02:59,658 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2019-10-22 09:02:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2019-10-22 09:02:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2019-10-22 09:02:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 3242 transitions. [2019-10-22 09:02:59,693 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 3242 transitions. Word has length 30 [2019-10-22 09:02:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,693 INFO L462 AbstractCegarLoop]: Abstraction has 1043 states and 3242 transitions. [2019-10-22 09:02:59,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 3242 transitions. [2019-10-22 09:02:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 09:02:59,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,697 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,697 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1011549891, now seen corresponding path program 1 times [2019-10-22 09:02:59,698 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:59,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366412402] [2019-10-22 09:02:59,698 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,698 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366412402] [2019-10-22 09:02:59,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:59,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:02:59,842 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230923274] [2019-10-22 09:02:59,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:59,844 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:59,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:59,844 INFO L87 Difference]: Start difference. First operand 1043 states and 3242 transitions. Second operand 6 states. [2019-10-22 09:02:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,942 INFO L93 Difference]: Finished difference Result 819 states and 2378 transitions. [2019-10-22 09:02:59,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:59,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-22 09:02:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,947 INFO L225 Difference]: With dead ends: 819 [2019-10-22 09:02:59,947 INFO L226 Difference]: Without dead ends: 707 [2019-10-22 09:02:59,948 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2019-10-22 09:02:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2019-10-22 09:02:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-10-22 09:02:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 2066 transitions. [2019-10-22 09:02:59,981 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 2066 transitions. Word has length 31 [2019-10-22 09:02:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,982 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 2066 transitions. [2019-10-22 09:02:59,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 2066 transitions. [2019-10-22 09:02:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 09:02:59,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,985 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,986 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:59,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1112606759, now seen corresponding path program 1 times [2019-10-22 09:02:59,986 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:59,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806544056] [2019-10-22 09:02:59,987 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,987 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:59,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:03:00,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806544056] [2019-10-22 09:03:00,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:03:00,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:03:00,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375360314] [2019-10-22 09:03:00,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:03:00,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:00,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:03:00,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:03:00,138 INFO L87 Difference]: Start difference. First operand 707 states and 2066 transitions. Second operand 6 states. [2019-10-22 09:03:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:00,262 INFO L93 Difference]: Finished difference Result 1187 states and 3490 transitions. [2019-10-22 09:03:00,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:03:00,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-10-22 09:03:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:00,266 INFO L225 Difference]: With dead ends: 1187 [2019-10-22 09:03:00,267 INFO L226 Difference]: Without dead ends: 591 [2019-10-22 09:03:00,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:03:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-10-22 09:03:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2019-10-22 09:03:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-10-22 09:03:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1742 transitions. [2019-10-22 09:03:00,295 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1742 transitions. Word has length 32 [2019-10-22 09:03:00,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:00,296 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 1742 transitions. [2019-10-22 09:03:00,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:03:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1742 transitions. [2019-10-22 09:03:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 09:03:00,299 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:00,300 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:00,300 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1097683385, now seen corresponding path program 2 times [2019-10-22 09:03:00,301 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:00,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179607693] [2019-10-22 09:03:00,303 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:00,303 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:00,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:03:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:03:00,483 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179607693] [2019-10-22 09:03:00,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:03:00,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:03:00,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658975931] [2019-10-22 09:03:00,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:03:00,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:03:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:03:00,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:03:00,485 INFO L87 Difference]: Start difference. First operand 591 states and 1742 transitions. Second operand 8 states. [2019-10-22 09:03:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:00,580 INFO L93 Difference]: Finished difference Result 463 states and 1326 transitions. [2019-10-22 09:03:00,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:03:00,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-10-22 09:03:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:00,581 INFO L225 Difference]: With dead ends: 463 [2019-10-22 09:03:00,581 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:03:00,581 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:03:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:03:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:03:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:03:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:03:00,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-22 09:03:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:00,582 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:03:00,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:03:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:03:00,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:03:00,586 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 09:03:00,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:03:00 BasicIcfg [2019-10-22 09:03:00,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:03:00,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:03:00,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:03:00,589 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:03:00,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:58" (3/4) ... [2019-10-22 09:03:00,593 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:03:00,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 09:03:00,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 09:03:00,601 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 09:03:00,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-10-22 09:03:00,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 09:03:00,645 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1454f053-33d0-42c9-b148-94606c6622f0/bin/uautomizer/witness.graphml [2019-10-22 09:03:00,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:03:00,648 INFO L168 Benchmark]: Toolchain (without parser) took 3450.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 939.4 MB in the beginning and 903.7 MB in the end (delta: 35.7 MB). Peak memory consumption was 225.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,648 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:00,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 939.4 MB in the beginning and 1.2 GB in the end (delta: -221.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:00,650 INFO L168 Benchmark]: Boogie Preprocessor took 32.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,650 INFO L168 Benchmark]: RCFGBuilder took 452.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,650 INFO L168 Benchmark]: TraceAbstraction took 2181.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.0 MB in the end (delta: 217.9 MB). Peak memory consumption was 217.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,651 INFO L168 Benchmark]: Witness Printer took 57.15 ms. Allocated memory is still 1.2 GB. Free memory was 910.0 MB in the beginning and 903.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,653 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 673.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 939.4 MB in the beginning and 1.2 GB in the end (delta: -221.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 452.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2181.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 910.0 MB in the end (delta: 217.9 MB). Peak memory consumption was 217.9 MB. Max. memory is 11.5 GB. * Witness Printer took 57.15 ms. Allocated memory is still 1.2 GB. Free memory was 910.0 MB in the beginning and 903.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 70 locations, 1 error locations. Result: SAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 353 SDslu, 563 SDs, 0 SdLazy, 74 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2384occurred 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: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 13501 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...