./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/safe004_tso.oepc.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f9b1396844f489e15fac07513801b6ebd902fa1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:03:21,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:03:21,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:03:21,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:03:21,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:03:21,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:03:21,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:03:21,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:03:21,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:03:21,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:03:21,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:03:21,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:03:21,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:03:21,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:03:21,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:03:21,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:03:21,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:03:21,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:03:21,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:03:21,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:03:21,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:03:21,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:03:21,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:03:21,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:03:21,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:03:21,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:03:21,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:03:21,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:03:21,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:03:21,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:03:21,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:03:21,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:03:21,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:03:21,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:03:21,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:03:21,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:03:21,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:03:21,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:03:21,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:03:21,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:03:21,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:03:21,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:03:21,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:03:21,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:03:21,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:03:21,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:03:21,495 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:03:21,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:03:21,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:03:21,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:03:21,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:03:21,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:03:21,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:03:21,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:03:21,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:03:21,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:03:21,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:03:21,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:03:21,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:03:21,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:03:21,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:03:21,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:03:21,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:03:21,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:03:21,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:03:21,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:03:21,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:03:21,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:03:21,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:03:21,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:03:21,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:03:21,504 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(reach_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 -> 5f9b1396844f489e15fac07513801b6ebd902fa1 [2020-10-20 03:03:21,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:03:21,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:03:21,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:03:21,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:03:21,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:03:21,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2020-10-20 03:03:21,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868a18abb/c36c5636dded415081f4cdac54c2d18b/FLAG2f469ad36 [2020-10-20 03:03:22,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:03:22,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.oepc.i [2020-10-20 03:03:22,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868a18abb/c36c5636dded415081f4cdac54c2d18b/FLAG2f469ad36 [2020-10-20 03:03:22,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868a18abb/c36c5636dded415081f4cdac54c2d18b [2020-10-20 03:03:22,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:03:22,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:03:22,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:22,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:03:22,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:03:22,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:22" (1/1) ... [2020-10-20 03:03:22,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f321084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:22, skipping insertion in model container [2020-10-20 03:03:22,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:22" (1/1) ... [2020-10-20 03:03:22,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:03:22,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:03:23,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:23,360 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:03:23,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:23,521 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:03:23,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23 WrapperNode [2020-10-20 03:03:23,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:23,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:23,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:03:23,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:03:23,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:23,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:03:23,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:03:23,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:03:23,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (1/1) ... [2020-10-20 03:03:23,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:03:23,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:03:23,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:03:23,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:03:23,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (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 [2020-10-20 03:03:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:03:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:03:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:03:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:03:23,678 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:03:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:03:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:03:23,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:03:23,679 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:03:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:03:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:03:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:03:23,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:03:23,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:03:23,682 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:03:24,074 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:03:24,074 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:03:24,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:24 BoogieIcfgContainer [2020-10-20 03:03:24,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:03:24,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:03:24,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:03:24,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:03:24,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:03:22" (1/3) ... [2020-10-20 03:03:24,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62261888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:24, skipping insertion in model container [2020-10-20 03:03:24,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:23" (2/3) ... [2020-10-20 03:03:24,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62261888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:24, skipping insertion in model container [2020-10-20 03:03:24,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:24" (3/3) ... [2020-10-20 03:03:24,086 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-10-20 03:03:24,098 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:03:24,098 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:03:24,105 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:03:24,106 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:03:24,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,145 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,145 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,145 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,145 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,150 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,150 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,150 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,151 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,156 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,156 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,156 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,159 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,159 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,159 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,159 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:24,161 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:03:24,175 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:03:24,194 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:03:24,195 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:03:24,195 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:03:24,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:03:24,195 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:03:24,195 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:03:24,195 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:03:24,195 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:03:24,208 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:03:24,210 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:03:24,212 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:03:24,214 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-20 03:03:24,279 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-20 03:03:24,279 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:03:24,285 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:03:24,288 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:03:26,190 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-20 03:03:26,293 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-20 03:03:26,316 INFO L132 LiptonReduction]: Checked pairs total: 3163 [2020-10-20 03:03:26,316 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:03:26,323 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:03:26,355 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:03:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:03:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:03:26,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:26,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:26,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:26,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-10-20 03:03:26,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:26,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145233841] [2020-10-20 03:03:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:26,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145233841] [2020-10-20 03:03:26,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:26,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:26,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049651555] [2020-10-20 03:03:26,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:03:26,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:26,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:03:26,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:03:26,600 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:03:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:26,634 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:03:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:03:26,636 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:03:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:26,654 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:03:26,655 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:03:26,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:03:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:03:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:03:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:03:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:03:26,732 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:03:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:26,734 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:03:26,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:03:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:03:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:03:26,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:26,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:26,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:03:26,736 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:26,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-10-20 03:03:26,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:26,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777694169] [2020-10-20 03:03:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:26,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777694169] [2020-10-20 03:03:26,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:26,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:26,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145959791] [2020-10-20 03:03:26,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:03:26,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:26,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:03:26,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:03:26,849 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-20 03:03:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:26,885 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-20 03:03:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:03:26,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:03:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:26,889 INFO L225 Difference]: With dead ends: 217 [2020-10-20 03:03:26,889 INFO L226 Difference]: Without dead ends: 217 [2020-10-20 03:03:26,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:03:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-20 03:03:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-20 03:03:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-20 03:03:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-20 03:03:26,922 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-20 03:03:26,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:26,924 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-20 03:03:26,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:03:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-20 03:03:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:03:26,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:26,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:26,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:03:26,929 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:26,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-10-20 03:03:26,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:26,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649016516] [2020-10-20 03:03:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:27,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649016516] [2020-10-20 03:03:27,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:27,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:27,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619202100] [2020-10-20 03:03:27,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:27,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:27,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:27,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:27,003 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-10-20 03:03:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:27,027 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-20 03:03:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:03:27,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:03:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:27,029 INFO L225 Difference]: With dead ends: 136 [2020-10-20 03:03:27,030 INFO L226 Difference]: Without dead ends: 136 [2020-10-20 03:03:27,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-20 03:03:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-20 03:03:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 03:03:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-20 03:03:27,038 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-20 03:03:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:27,038 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-20 03:03:27,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-20 03:03:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:03:27,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:27,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:27,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:03:27,040 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:27,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-10-20 03:03:27,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:27,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639766909] [2020-10-20 03:03:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:27,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639766909] [2020-10-20 03:03:27,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:27,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:03:27,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277051865] [2020-10-20 03:03:27,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:03:27,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:27,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:03:27,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:27,119 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-10-20 03:03:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:27,145 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-20 03:03:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:03:27,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 03:03:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:27,147 INFO L225 Difference]: With dead ends: 109 [2020-10-20 03:03:27,147 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 03:03:27,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 03:03:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-20 03:03:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 03:03:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-20 03:03:27,152 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-20 03:03:27,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:27,153 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-20 03:03:27,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:03:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-20 03:03:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:03:27,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:27,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:27,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:03:27,155 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:27,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-10-20 03:03:27,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:27,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993676017] [2020-10-20 03:03:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:27,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993676017] [2020-10-20 03:03:27,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:27,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:03:27,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301593318] [2020-10-20 03:03:27,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:03:27,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:27,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:03:27,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:27,273 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-10-20 03:03:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:27,361 INFO L93 Difference]: Finished difference Result 188 states and 388 transitions. [2020-10-20 03:03:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:03:27,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:03:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:27,362 INFO L225 Difference]: With dead ends: 188 [2020-10-20 03:03:27,363 INFO L226 Difference]: Without dead ends: 124 [2020-10-20 03:03:27,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:03:27,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-20 03:03:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-10-20 03:03:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 03:03:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 229 transitions. [2020-10-20 03:03:27,376 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 229 transitions. Word has length 18 [2020-10-20 03:03:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:27,378 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 229 transitions. [2020-10-20 03:03:27,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:03:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 229 transitions. [2020-10-20 03:03:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:03:27,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:27,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:27,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:03:27,384 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-10-20 03:03:27,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:27,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037813535] [2020-10-20 03:03:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:27,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037813535] [2020-10-20 03:03:27,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:27,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:27,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164791643] [2020-10-20 03:03:27,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:27,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:27,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:27,495 INFO L87 Difference]: Start difference. First operand 109 states and 229 transitions. Second operand 4 states. [2020-10-20 03:03:27,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:27,530 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-10-20 03:03:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:03:27,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-20 03:03:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:27,531 INFO L225 Difference]: With dead ends: 123 [2020-10-20 03:03:27,532 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 03:03:27,532 INFO L677 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 [2020-10-20 03:03:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 03:03:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-20 03:03:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 03:03:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2020-10-20 03:03:27,535 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 18 [2020-10-20 03:03:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:27,535 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2020-10-20 03:03:27,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2020-10-20 03:03:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:03:27,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:27,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:27,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:03:27,539 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:27,539 INFO L82 PathProgramCache]: Analyzing trace with hash 30994256, now seen corresponding path program 3 times [2020-10-20 03:03:27,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:27,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753061065] [2020-10-20 03:03:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:27,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753061065] [2020-10-20 03:03:27,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:27,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:27,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031947073] [2020-10-20 03:03:27,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:27,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:27,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:27,587 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand 4 states. [2020-10-20 03:03:27,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:27,602 INFO L93 Difference]: Finished difference Result 42 states and 68 transitions. [2020-10-20 03:03:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:03:27,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-20 03:03:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:27,603 INFO L225 Difference]: With dead ends: 42 [2020-10-20 03:03:27,603 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:03:27,604 INFO L677 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 [2020-10-20 03:03:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:03:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:03:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:03:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:03:27,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:03:27,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:27,606 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:03:27,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:03:27,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:03:27,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:03:27,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:03:27 BasicIcfg [2020-10-20 03:03:27,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:03:27,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:03:27,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:03:27,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:03:27,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:24" (3/4) ... [2020-10-20 03:03:27,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:03:27,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:03:27,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:03:27,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:03:27,630 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:03:27,630 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:03:27,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:03:27,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:03:27,681 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:03:27,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:03:27,683 INFO L168 Benchmark]: Toolchain (without parser) took 4983.45 ms. Allocated memory was 34.6 MB in the beginning and 73.4 MB in the end (delta: 38.8 MB). Free memory was 14.7 MB in the beginning and 15.1 MB in the end (delta: -373.5 kB). Peak memory consumption was 38.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,684 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 33.6 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.03 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 13.8 MB in the beginning and 15.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.61 ms. Allocated memory is still 45.1 MB. Free memory was 15.8 MB in the beginning and 13.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,686 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 45.1 MB. Free memory was 13.8 MB in the beginning and 12.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,687 INFO L168 Benchmark]: RCFGBuilder took 478.14 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 12.1 MB in the beginning and 21.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,687 INFO L168 Benchmark]: TraceAbstraction took 3532.83 ms. Allocated memory was 46.7 MB in the beginning and 73.4 MB in the end (delta: 26.7 MB). Free memory was 20.7 MB in the beginning and 18.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,688 INFO L168 Benchmark]: Witness Printer took 70.17 ms. Allocated memory is still 73.4 MB. Free memory was 18.6 MB in the beginning and 15.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:27,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 33.6 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 817.03 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 13.8 MB in the beginning and 15.8 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.61 ms. Allocated memory is still 45.1 MB. Free memory was 15.8 MB in the beginning and 13.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 45.1 MB. Free memory was 13.8 MB in the beginning and 12.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 478.14 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 12.1 MB in the beginning and 21.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3532.83 ms. Allocated memory was 46.7 MB in the beginning and 73.4 MB in the end (delta: 26.7 MB). Free memory was 20.7 MB in the beginning and 18.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 14.3 GB. * Witness Printer took 70.17 ms. Allocated memory is still 73.4 MB. Free memory was 18.6 MB in the beginning and 15.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 952 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 139 SDtfs, 76 SDslu, 194 SDs, 0 SdLazy, 72 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...