./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a75fae05219b8dc129ce0de9eab72445d562eb07 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:32:02,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:32:02,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:32:02,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:32:02,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:32:02,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:32:02,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:32:02,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:32:02,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:32:02,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:32:02,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:32:02,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:32:02,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:32:02,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:32:02,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:32:02,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:32:02,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:32:02,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:32:02,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:32:02,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:32:02,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:32:02,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:32:02,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:32:02,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:32:02,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:32:02,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:32:02,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:32:02,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:32:02,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:32:02,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:32:02,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:32:02,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:32:02,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:32:02,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:32:02,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:32:02,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:32:02,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:32:02,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:32:02,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:32:02,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:32:02,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:32:02,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:32:02,499 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:32:02,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:32:02,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:32:02,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:32:02,503 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:32:02,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:32:02,504 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:32:02,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:32:02,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:32:02,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:32:02,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:32:02,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:32:02,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:32:02,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:32:02,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:32:02,507 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:32:02,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:32:02,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:32:02,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:32:02,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:32:02,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:32:02,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:32:02,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:32:02,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:32:02,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:32:02,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:32:02,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:32:02,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:32:02,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:32:02,510 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> a75fae05219b8dc129ce0de9eab72445d562eb07 [2019-11-28 18:32:02,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:32:02,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:32:02,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:32:02,847 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:32:02,847 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:32:02,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-11-28 18:32:02,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7319700df/1f7cc81313ce4aab846b0f1309c792a9/FLAGaba9cd730 [2019-11-28 18:32:03,525 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:32:03,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-11-28 18:32:03,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7319700df/1f7cc81313ce4aab846b0f1309c792a9/FLAGaba9cd730 [2019-11-28 18:32:03,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7319700df/1f7cc81313ce4aab846b0f1309c792a9 [2019-11-28 18:32:03,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:32:03,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:32:03,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:32:03,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:32:03,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:32:03,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:32:03" (1/1) ... [2019-11-28 18:32:03,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cff6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:03, skipping insertion in model container [2019-11-28 18:32:03,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:32:03" (1/1) ... [2019-11-28 18:32:03,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:32:03,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:32:04,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:32:04,419 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:32:04,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:32:04,544 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:32:04,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04 WrapperNode [2019-11-28 18:32:04,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:32:04,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:32:04,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:32:04,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:32:04,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:32:04,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:32:04,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:32:04,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:32:04,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:32:04,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:32:04,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:32:04,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:32:04,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:32:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:32:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:32:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:32:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:32:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:32:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-28 18:32:04,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-28 18:32:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:32:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:32:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:32:04,713 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:32:05,107 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:32:05,107 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:32:05,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:32:05 BoogieIcfgContainer [2019-11-28 18:32:05,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:32:05,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:32:05,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:32:05,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:32:05,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:32:03" (1/3) ... [2019-11-28 18:32:05,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48adb43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:32:05, skipping insertion in model container [2019-11-28 18:32:05,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (2/3) ... [2019-11-28 18:32:05,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48adb43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:32:05, skipping insertion in model container [2019-11-28 18:32:05,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:32:05" (3/3) ... [2019-11-28 18:32:05,122 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2019-11-28 18:32:05,134 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:32:05,134 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:32:05,146 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:32:05,147 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:32:05,177 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,178 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,178 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,178 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,179 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,179 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,180 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,180 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,180 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,181 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,182 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,182 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,183 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,183 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,183 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,184 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,185 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,185 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,185 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,185 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,186 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,214 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 18:32:05,231 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:32:05,231 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:32:05,231 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:32:05,231 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:32:05,231 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:32:05,231 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:32:05,232 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:32:05,232 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:32:05,249 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 65 transitions [2019-11-28 18:32:05,251 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-11-28 18:32:05,303 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-11-28 18:32:05,304 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:32:05,313 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:32:05,317 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-11-28 18:32:05,337 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-11-28 18:32:05,338 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:32:05,339 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:32:05,341 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-11-28 18:32:05,343 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:32:06,815 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-11-28 18:32:06,970 INFO L206 etLargeBlockEncoding]: Checked pairs total: 687 [2019-11-28 18:32:06,971 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2019-11-28 18:32:06,976 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions [2019-11-28 18:32:07,018 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 110 states. [2019-11-28 18:32:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2019-11-28 18:32:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:32:07,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:07,036 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:07,037 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:07,047 INFO L82 PathProgramCache]: Analyzing trace with hash -162708018, now seen corresponding path program 1 times [2019-11-28 18:32:07,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:07,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368427616] [2019-11-28 18:32:07,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:07,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368427616] [2019-11-28 18:32:07,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:07,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:32:07,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937999731] [2019-11-28 18:32:07,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:32:07,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:07,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:32:07,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:32:07,481 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2019-11-28 18:32:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:07,560 INFO L93 Difference]: Finished difference Result 122 states and 301 transitions. [2019-11-28 18:32:07,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:32:07,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 18:32:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:07,579 INFO L225 Difference]: With dead ends: 122 [2019-11-28 18:32:07,580 INFO L226 Difference]: Without dead ends: 76 [2019-11-28 18:32:07,586 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:07,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-28 18:32:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-11-28 18:32:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-28 18:32:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 182 transitions. [2019-11-28 18:32:07,634 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 182 transitions. Word has length 10 [2019-11-28 18:32:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:07,636 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 182 transitions. [2019-11-28 18:32:07,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:32:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 182 transitions. [2019-11-28 18:32:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:32:07,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:07,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:07,638 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:07,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:07,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1102272548, now seen corresponding path program 1 times [2019-11-28 18:32:07,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:07,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204429599] [2019-11-28 18:32:07,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:07,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204429599] [2019-11-28 18:32:07,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:07,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:07,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621950159] [2019-11-28 18:32:07,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:32:07,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:07,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:32:07,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:07,777 INFO L87 Difference]: Start difference. First operand 76 states and 182 transitions. Second operand 5 states. [2019-11-28 18:32:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:07,844 INFO L93 Difference]: Finished difference Result 83 states and 182 transitions. [2019-11-28 18:32:07,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:32:07,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 18:32:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:07,849 INFO L225 Difference]: With dead ends: 83 [2019-11-28 18:32:07,849 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 18:32:07,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:32:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 18:32:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-28 18:32:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-28 18:32:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 150 transitions. [2019-11-28 18:32:07,860 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 150 transitions. Word has length 11 [2019-11-28 18:32:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:07,861 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 150 transitions. [2019-11-28 18:32:07,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:32:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 150 transitions. [2019-11-28 18:32:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 18:32:07,862 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:07,863 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:07,863 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash -11530752, now seen corresponding path program 1 times [2019-11-28 18:32:07,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:07,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975039347] [2019-11-28 18:32:07,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:07,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975039347] [2019-11-28 18:32:07,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:07,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:32:07,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533174959] [2019-11-28 18:32:07,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:32:07,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:32:07,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:32:07,993 INFO L87 Difference]: Start difference. First operand 68 states and 150 transitions. Second operand 6 states. [2019-11-28 18:32:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,092 INFO L93 Difference]: Finished difference Result 67 states and 136 transitions. [2019-11-28 18:32:08,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:32:08,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 18:32:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,094 INFO L225 Difference]: With dead ends: 67 [2019-11-28 18:32:08,094 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 18:32:08,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-28 18:32:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 18:32:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-28 18:32:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 18:32:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2019-11-28 18:32:08,103 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 12 [2019-11-28 18:32:08,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,103 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2019-11-28 18:32:08,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:32:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2019-11-28 18:32:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 18:32:08,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,105 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,106 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,106 INFO L82 PathProgramCache]: Analyzing trace with hash -349293673, now seen corresponding path program 1 times [2019-11-28 18:32:08,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584362585] [2019-11-28 18:32:08,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584362585] [2019-11-28 18:32:08,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 18:32:08,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575268820] [2019-11-28 18:32:08,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 18:32:08,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 18:32:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:32:08,273 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 7 states. [2019-11-28 18:32:08,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,403 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2019-11-28 18:32:08,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 18:32:08,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 18:32:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,404 INFO L225 Difference]: With dead ends: 53 [2019-11-28 18:32:08,404 INFO L226 Difference]: Without dead ends: 48 [2019-11-28 18:32:08,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-28 18:32:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-28 18:32:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-28 18:32:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 18:32:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 98 transitions. [2019-11-28 18:32:08,414 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 98 transitions. Word has length 13 [2019-11-28 18:32:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,415 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 98 transitions. [2019-11-28 18:32:08,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 18:32:08,415 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 98 transitions. [2019-11-28 18:32:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,417 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,417 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2056881420, now seen corresponding path program 1 times [2019-11-28 18:32:08,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779289506] [2019-11-28 18:32:08,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779289506] [2019-11-28 18:32:08,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:32:08,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777600380] [2019-11-28 18:32:08,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:32:08,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:32:08,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:32:08,553 INFO L87 Difference]: Start difference. First operand 48 states and 98 transitions. Second operand 4 states. [2019-11-28 18:32:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,572 INFO L93 Difference]: Finished difference Result 53 states and 103 transitions. [2019-11-28 18:32:08,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:32:08,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:32:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,574 INFO L225 Difference]: With dead ends: 53 [2019-11-28 18:32:08,574 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 18:32:08,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 18:32:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 18:32:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 18:32:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2019-11-28 18:32:08,578 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 48 transitions. Word has length 14 [2019-11-28 18:32:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,578 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 48 transitions. [2019-11-28 18:32:08,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:32:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2019-11-28 18:32:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,579 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,579 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1378905044, now seen corresponding path program 2 times [2019-11-28 18:32:08,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657495829] [2019-11-28 18:32:08,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657495829] [2019-11-28 18:32:08,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:08,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172797113] [2019-11-28 18:32:08,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:32:08,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:32:08,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:32:08,635 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2019-11-28 18:32:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,655 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2019-11-28 18:32:08,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:32:08,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:32:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,656 INFO L225 Difference]: With dead ends: 33 [2019-11-28 18:32:08,656 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 18:32:08,657 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 18:32:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 18:32:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 18:32:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-28 18:32:08,659 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2019-11-28 18:32:08,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,660 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 18:32:08,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:32:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-28 18:32:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,660 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,661 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,661 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2103109014, now seen corresponding path program 3 times [2019-11-28 18:32:08,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047301772] [2019-11-28 18:32:08,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047301772] [2019-11-28 18:32:08,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:08,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955538398] [2019-11-28 18:32:08,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:32:08,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:32:08,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:08,759 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 5 states. [2019-11-28 18:32:08,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,784 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-28 18:32:08,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:32:08,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:32:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,785 INFO L225 Difference]: With dead ends: 22 [2019-11-28 18:32:08,786 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 18:32:08,787 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:32:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 18:32:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 18:32:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 18:32:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-28 18:32:08,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-11-28 18:32:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,791 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-28 18:32:08,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:32:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-28 18:32:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,793 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,793 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2031929270, now seen corresponding path program 4 times [2019-11-28 18:32:08,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,794 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741397082] [2019-11-28 18:32:08,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741397082] [2019-11-28 18:32:08,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:08,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717587270] [2019-11-28 18:32:08,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:32:08,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:32:08,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:32:08,898 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 4 states. [2019-11-28 18:32:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,921 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2019-11-28 18:32:08,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:32:08,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:32:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,922 INFO L225 Difference]: With dead ends: 14 [2019-11-28 18:32:08,922 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:32:08,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:08,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:32:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:32:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:32:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:32:08,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-28 18:32:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,924 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:32:08,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:32:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:32:08,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:32:08,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:32:08 BasicIcfg [2019-11-28 18:32:08,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:32:08,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:32:08,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:32:08,930 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:32:08,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:32:05" (3/4) ... [2019-11-28 18:32:08,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:32:08,943 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:32:08,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:32:08,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:32:08,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-28 18:32:08,956 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 18:32:08,957 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:32:08,964 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:32:09,047 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:32:09,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:32:09,049 INFO L168 Benchmark]: Toolchain (without parser) took 5264.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 218.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 41.5 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,050 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:09,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:09,052 INFO L168 Benchmark]: Boogie Preprocessor took 26.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:09,052 INFO L168 Benchmark]: RCFGBuilder took 467.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,053 INFO L168 Benchmark]: TraceAbstraction took 3817.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,053 INFO L168 Benchmark]: Witness Printer took 117.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:09,056 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 758.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 467.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3817.04 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Witness Printer took 117.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 28 ProgramPointsAfterwards, 65 TransitionsBefore, 21 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 362 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 687 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 1 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 157 SDslu, 107 SDs, 0 SdLazy, 108 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 4300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...