./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_pso.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/safe018_pso.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 81a2da0952c22c94b17f5c8db8240b8acbaea581 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:05:37,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:05:37,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:05:37,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:05:37,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:05:37,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:05:37,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:05:37,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:05:37,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:05:37,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:05:37,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:05:37,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:05:37,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:05:37,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:05:37,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:05:37,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:05:37,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:05:37,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:05:37,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:05:37,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:05:37,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:05:37,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:05:37,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:05:37,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:05:37,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:05:37,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:05:37,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:05:37,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:05:37,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:05:37,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:05:37,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:05:37,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:05:37,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:05:37,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:05:37,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:05:37,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:05:37,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:05:37,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:05:37,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:05:37,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:05:37,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:05:37,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:05:37,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:05:37,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:05:37,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:05:37,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:05:37,435 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:05:37,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:05:37,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:05:37,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:05:37,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:05:37,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:05:37,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:05:37,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:05:37,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:05:37,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:05:37,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:05:37,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:05:37,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:05:37,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:05:37,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:05:37,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:05:37,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:05:37,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:05:37,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:05:37,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:05:37,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:05:37,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:05:37,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:05:37,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:05:37,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:05:37,442 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 -> 81a2da0952c22c94b17f5c8db8240b8acbaea581 [2020-10-20 03:05:37,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:05:37,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:05:37,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:05:37,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:05:37,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:05:37,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2020-10-20 03:05:37,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e522fb5f7/198f5f02d9114669909126ecbf875f9e/FLAGa510f19e5 [2020-10-20 03:05:38,322 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:05:38,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc.i [2020-10-20 03:05:38,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e522fb5f7/198f5f02d9114669909126ecbf875f9e/FLAGa510f19e5 [2020-10-20 03:05:38,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e522fb5f7/198f5f02d9114669909126ecbf875f9e [2020-10-20 03:05:38,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:05:38,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:05:38,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:38,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:05:38,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:05:38,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:38" (1/1) ... [2020-10-20 03:05:38,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a77926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:38, skipping insertion in model container [2020-10-20 03:05:38,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:38" (1/1) ... [2020-10-20 03:05:38,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:05:38,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:05:39,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:39,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:05:39,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:39,312 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:05:39,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39 WrapperNode [2020-10-20 03:05:39,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:39,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:39,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:05:39,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:05:39,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:39,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:05:39,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:05:39,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:05:39,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (1/1) ... [2020-10-20 03:05:39,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:05:39,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:05:39,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:05:39,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:05:39,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (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 03:05:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:05:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:05:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:05:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:05:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:05:39,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:05:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:05:39,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:05:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:05:39,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:05:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:05:39,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:05:39,484 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 03:05:39,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:05:39,861 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:05:39,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:39 BoogieIcfgContainer [2020-10-20 03:05:39,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:05:39,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:05:39,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:05:39,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:05:39,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:05:38" (1/3) ... [2020-10-20 03:05:39,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6657b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:39, skipping insertion in model container [2020-10-20 03:05:39,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:39" (2/3) ... [2020-10-20 03:05:39,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6657b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:39, skipping insertion in model container [2020-10-20 03:05:39,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:39" (3/3) ... [2020-10-20 03:05:39,871 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-10-20 03:05:39,882 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:05:39,883 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:05:39,890 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:05:39,891 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:05:39,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,921 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,927 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,928 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,928 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,934 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,934 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,937 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,937 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,937 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:39,940 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:05:39,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:05:39,971 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:05:39,971 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:05:39,971 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:05:39,972 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:05:39,972 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:05:39,972 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:05:39,972 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:05:39,972 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:05:39,986 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:05:39,989 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:05:39,991 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:05:39,993 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-20 03:05:40,047 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-20 03:05:40,048 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:05:40,053 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 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-20 03:05:40,056 INFO L117 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-20 03:05:41,619 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-20 03:05:41,893 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-20 03:05:42,210 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-20 03:05:42,217 INFO L132 LiptonReduction]: Checked pairs total: 2462 [2020-10-20 03:05:42,218 INFO L134 LiptonReduction]: Total number of compositions: 71 [2020-10-20 03:05:42,226 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:05:42,250 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-20 03:05:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-20 03:05:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:05:42,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:42,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:42,262 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-20 03:05:42,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:42,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890699517] [2020-10-20 03:05:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:42,490 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 03:05:42,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890699517] [2020-10-20 03:05:42,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:42,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:42,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304859720] [2020-10-20 03:05:42,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:05:42,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:42,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:05:42,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:05:42,521 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-20 03:05:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:42,555 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-20 03:05:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:05:42,560 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:05:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:42,578 INFO L225 Difference]: With dead ends: 274 [2020-10-20 03:05:42,578 INFO L226 Difference]: Without dead ends: 226 [2020-10-20 03:05:42,580 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 03:05:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-20 03:05:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-20 03:05:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-20 03:05:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-20 03:05:42,647 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-20 03:05:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:42,648 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-20 03:05:42,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:05:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-20 03:05:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:05:42,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:42,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:42,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:05:42,651 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:42,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-20 03:05:42,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:42,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277123013] [2020-10-20 03:05:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:42,787 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 03:05:42,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277123013] [2020-10-20 03:05:42,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:42,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:42,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875554843] [2020-10-20 03:05:42,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:42,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:42,792 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-20 03:05:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:42,837 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-20 03:05:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:42,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:05:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:42,842 INFO L225 Difference]: With dead ends: 250 [2020-10-20 03:05:42,842 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:05:42,844 INFO L677 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 [2020-10-20 03:05:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:05:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:05:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:05:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-20 03:05:42,873 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-20 03:05:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:42,876 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-20 03:05:42,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-20 03:05:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:05:42,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:42,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:42,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:05:42,879 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:42,880 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-20 03:05:42,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:42,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051962441] [2020-10-20 03:05:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:42,978 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 03:05:42,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051962441] [2020-10-20 03:05:42,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:42,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:42,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423780876] [2020-10-20 03:05:42,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:42,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:42,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:42,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:42,981 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-20 03:05:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:43,043 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-20 03:05:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:43,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 03:05:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:43,045 INFO L225 Difference]: With dead ends: 238 [2020-10-20 03:05:43,045 INFO L226 Difference]: Without dead ends: 106 [2020-10-20 03:05:43,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:05:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-20 03:05:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-20 03:05:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 03:05:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-20 03:05:43,054 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-20 03:05:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:43,054 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-20 03:05:43,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-20 03:05:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:43,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:43,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:43,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:05:43,057 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:43,058 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-20 03:05:43,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:43,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395472159] [2020-10-20 03:05:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:43,143 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 03:05:43,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395472159] [2020-10-20 03:05:43,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:43,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:43,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613226075] [2020-10-20 03:05:43,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:43,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:43,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:43,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:43,145 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-20 03:05:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:43,203 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-20 03:05:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:43,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:05:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:43,205 INFO L225 Difference]: With dead ends: 148 [2020-10-20 03:05:43,205 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 03:05:43,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:05:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 03:05:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-20 03:05:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 03:05:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-20 03:05:43,210 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-20 03:05:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:43,210 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-20 03:05:43,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-20 03:05:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:05:43,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:43,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:43,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:05:43,212 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-20 03:05:43,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:43,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572969618] [2020-10-20 03:05:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:43,266 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 03:05:43,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572969618] [2020-10-20 03:05:43,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:43,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:43,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332347203] [2020-10-20 03:05:43,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:43,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:43,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:43,271 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-20 03:05:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:43,391 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-20 03:05:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:43,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:05:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:43,392 INFO L225 Difference]: With dead ends: 87 [2020-10-20 03:05:43,393 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 03:05:43,393 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 03:05:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 03:05:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-20 03:05:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 03:05:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-20 03:05:43,397 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-20 03:05:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:43,398 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-20 03:05:43,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-20 03:05:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:05:43,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:43,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:43,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:05:43,399 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-20 03:05:43,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:43,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81955248] [2020-10-20 03:05:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:43,503 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 03:05:43,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81955248] [2020-10-20 03:05:43,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:43,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:05:43,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363741641] [2020-10-20 03:05:43,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:43,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:43,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:43,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:43,506 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-10-20 03:05:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:43,547 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-20 03:05:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:43,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:05:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:43,549 INFO L225 Difference]: With dead ends: 62 [2020-10-20 03:05:43,549 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 03:05:43,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 03:05:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 03:05:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 03:05:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-20 03:05:43,553 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-20 03:05:43,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:43,554 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-20 03:05:43,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-20 03:05:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:05:43,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:43,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:43,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:05:43,556 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:43,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-20 03:05:43,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:43,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582323705] [2020-10-20 03:05:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:43,611 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 03:05:43,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582323705] [2020-10-20 03:05:43,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:43,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:05:43,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794721568] [2020-10-20 03:05:43,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:05:43,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:43,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:05:43,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:43,614 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-20 03:05:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:43,660 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-20 03:05:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:05:43,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:05:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:43,661 INFO L225 Difference]: With dead ends: 40 [2020-10-20 03:05:43,661 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 03:05:43,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:05:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 03:05:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-20 03:05:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 03:05:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-20 03:05:43,665 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-20 03:05:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:43,665 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-20 03:05:43,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:05:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-20 03:05:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:05:43,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:43,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:43,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:05:43,667 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:43,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-20 03:05:43,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:43,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267121487] [2020-10-20 03:05:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:43,807 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 03:05:43,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267121487] [2020-10-20 03:05:43,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:43,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 03:05:43,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389508593] [2020-10-20 03:05:43,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 03:05:43,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:43,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 03:05:43,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 03:05:43,810 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 10 states. [2020-10-20 03:05:44,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:44,019 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-10-20 03:05:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 03:05:44,020 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 03:05:44,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:44,020 INFO L225 Difference]: With dead ends: 46 [2020-10-20 03:05:44,020 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 03:05:44,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-20 03:05:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 03:05:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-20 03:05:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 03:05:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-20 03:05:44,031 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2020-10-20 03:05:44,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:44,031 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-20 03:05:44,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 03:05:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-20 03:05:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:05:44,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:44,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:44,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:05:44,033 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:44,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:44,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1493599964, now seen corresponding path program 2 times [2020-10-20 03:05:44,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:44,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92204460] [2020-10-20 03:05:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:44,196 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 03:05:44,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92204460] [2020-10-20 03:05:44,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:44,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 03:05:44,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091040084] [2020-10-20 03:05:44,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 03:05:44,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:44,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 03:05:44,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-20 03:05:44,199 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-20 03:05:44,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:44,301 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-20 03:05:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 03:05:44,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 03:05:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:44,303 INFO L225 Difference]: With dead ends: 27 [2020-10-20 03:05:44,303 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:05:44,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-20 03:05:44,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:05:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:05:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:05:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:05:44,304 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:05:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:44,304 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:05:44,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 03:05:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:05:44,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:05:44,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:05:44,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:05:44 BasicIcfg [2020-10-20 03:05:44,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:05:44,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:05:44,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:05:44,312 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:05:44,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:39" (3/4) ... [2020-10-20 03:05:44,317 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:05:44,324 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:05:44,324 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:05:44,325 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:05:44,330 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:05:44,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:05:44,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:44,331 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:44,374 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:05:44,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:05:44,376 INFO L168 Benchmark]: Toolchain (without parser) took 5771.69 ms. Allocated memory was 36.7 MB in the beginning and 87.0 MB in the end (delta: 50.3 MB). Free memory was 19.1 MB in the beginning and 42.5 MB in the end (delta: -23.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,376 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 34.6 MB. Free memory was 12.7 MB in the beginning and 12.7 MB in the end (delta: 52.4 kB). Peak memory consumption was 52.4 kB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.25 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 18.2 MB in the beginning and 19.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.16 ms. Allocated memory is still 46.7 MB. Free memory was 19.3 MB in the beginning and 17.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,378 INFO L168 Benchmark]: Boogie Preprocessor took 26.66 ms. Allocated memory is still 46.7 MB. Free memory was 17.2 MB in the beginning and 15.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,379 INFO L168 Benchmark]: RCFGBuilder took 459.14 ms. Allocated memory was 46.7 MB in the beginning and 49.3 MB in the end (delta: 2.6 MB). Free memory was 15.6 MB in the beginning and 29.1 MB in the end (delta: -13.5 MB). Peak memory consumption was 5.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,380 INFO L168 Benchmark]: TraceAbstraction took 4446.54 ms. Allocated memory was 49.3 MB in the beginning and 87.0 MB in the end (delta: 37.7 MB). Free memory was 28.8 MB in the beginning and 45.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,380 INFO L168 Benchmark]: Witness Printer took 62.51 ms. Allocated memory is still 87.0 MB. Free memory was 45.5 MB in the beginning and 42.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:44,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 34.6 MB. Free memory was 12.7 MB in the beginning and 12.7 MB in the end (delta: 52.4 kB). Peak memory consumption was 52.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 703.25 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 18.2 MB in the beginning and 19.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 62.16 ms. Allocated memory is still 46.7 MB. Free memory was 19.3 MB in the beginning and 17.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.66 ms. Allocated memory is still 46.7 MB. Free memory was 17.2 MB in the beginning and 15.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 459.14 ms. Allocated memory was 46.7 MB in the beginning and 49.3 MB in the end (delta: 2.6 MB). Free memory was 15.6 MB in the beginning and 29.1 MB in the end (delta: -13.5 MB). Peak memory consumption was 5.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4446.54 ms. Allocated memory was 49.3 MB in the beginning and 87.0 MB in the end (delta: 37.7 MB). Free memory was 28.8 MB in the beginning and 45.5 MB in the end (delta: -16.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 14.3 GB. * Witness Printer took 62.51 ms. Allocated memory is still 87.0 MB. Free memory was 45.5 MB in the beginning and 42.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 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: 4.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 164 SDtfs, 184 SDslu, 379 SDs, 0 SdLazy, 325 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 6880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...