./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_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/safe035_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 579bf1ab04c697c17eb912588eb6e76933ecf217 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:08:35,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:08:35,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:08:35,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:08:35,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:08:35,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:08:35,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:08:35,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:08:35,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:08:35,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:08:35,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:08:35,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:08:35,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:08:35,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:08:35,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:08:35,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:08:35,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:08:35,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:08:35,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:08:35,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:08:35,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:08:35,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:08:35,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:08:35,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:08:35,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:08:35,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:08:35,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:08:35,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:08:35,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:08:35,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:08:35,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:08:35,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:08:35,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:08:35,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:08:35,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:08:35,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:08:35,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:08:35,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:08:35,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:08:35,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:08:35,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:08:35,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:08:35,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:08:35,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:08:35,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:08:35,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:08:35,777 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:08:35,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:08:35,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:08:35,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:08:35,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:08:35,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:08:35,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:08:35,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:08:35,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:08:35,779 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:08:35,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:08:35,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:08:35,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:08:35,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:08:35,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:08:35,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:08:35,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:08:35,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:08:35,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:08:35,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:08:35,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:08:35,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:08:35,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:08:35,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:08:35,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:08:35,782 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 -> 579bf1ab04c697c17eb912588eb6e76933ecf217 [2020-10-20 03:08:36,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:08:36,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:08:36,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:08:36,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:08:36,030 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:08:36,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_tso.oepc.i [2020-10-20 03:08:36,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc55c9e8/0769788fd93e418b849ebd7509fed2de/FLAG7b209f375 [2020-10-20 03:08:36,720 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:08:36,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_tso.oepc.i [2020-10-20 03:08:36,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc55c9e8/0769788fd93e418b849ebd7509fed2de/FLAG7b209f375 [2020-10-20 03:08:36,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc55c9e8/0769788fd93e418b849ebd7509fed2de [2020-10-20 03:08:36,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:08:36,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:08:36,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:08:36,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:08:36,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:08:36,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:08:36" (1/1) ... [2020-10-20 03:08:36,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502a0525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:36, skipping insertion in model container [2020-10-20 03:08:36,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:08:36" (1/1) ... [2020-10-20 03:08:36,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:08:37,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:08:37,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:08:37,519 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:08:37,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:08:37,690 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:08:37,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37 WrapperNode [2020-10-20 03:08:37,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:08:37,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:08:37,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:08:37,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:08:37,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:08:37,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:08:37,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:08:37,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:08:37,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (1/1) ... [2020-10-20 03:08:37,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:08:37,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:08:37,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:08:37,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:08:37,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (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 03:08:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:08:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:08:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:08:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:08:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:08:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:08:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:08:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:08:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:08:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:08:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:08:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:08:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:08:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:08:37,849 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 03:08:38,295 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:08:38,296 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:08:38,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:38 BoogieIcfgContainer [2020-10-20 03:08:38,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:08:38,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:08:38,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:08:38,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:08:38,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:08:36" (1/3) ... [2020-10-20 03:08:38,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9779f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:08:38, skipping insertion in model container [2020-10-20 03:08:38,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:08:37" (2/3) ... [2020-10-20 03:08:38,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9779f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:08:38, skipping insertion in model container [2020-10-20 03:08:38,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:38" (3/3) ... [2020-10-20 03:08:38,309 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-10-20 03:08:38,320 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:08:38,320 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:08:38,328 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:08:38,329 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:08:38,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,381 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,381 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,384 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,384 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,385 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,386 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,386 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,394 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,395 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,395 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,395 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,400 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,400 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:08:38,405 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:08:38,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:08:38,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:08:38,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:08:38,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:08:38,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:08:38,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:08:38,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:08:38,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:08:38,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:08:38,458 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:08:38,461 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:08:38,463 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:08:38,466 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:08:38,520 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:08:38,521 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:08:38,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:08:38,529 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:08:40,396 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-20 03:08:40,692 INFO L132 LiptonReduction]: Checked pairs total: 2778 [2020-10-20 03:08:40,694 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-20 03:08:40,701 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:08:40,736 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:08:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:08:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:08:40,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:40,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:40,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:40,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:40,753 INFO L82 PathProgramCache]: Analyzing trace with hash -345538935, now seen corresponding path program 1 times [2020-10-20 03:08:40,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:40,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297309904] [2020-10-20 03:08:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:40,930 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 03:08:40,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297309904] [2020-10-20 03:08:40,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:40,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:40,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493873114] [2020-10-20 03:08:40,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:08:40,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:08:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:08:40,955 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:08:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:40,989 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:08:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:08:40,991 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:08:40,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:41,008 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:08:41,009 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:08:41,010 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 03:08:41,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:08:41,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:08:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:08:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:08:41,085 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:08:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:41,086 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:08:41,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:08:41,087 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:08:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:08:41,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:41,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:41,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:08:41,089 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:41,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2121797576, now seen corresponding path program 1 times [2020-10-20 03:08:41,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:41,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996718510] [2020-10-20 03:08:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:41,315 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 03:08:41,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996718510] [2020-10-20 03:08:41,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:41,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:08:41,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715850499] [2020-10-20 03:08:41,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:41,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:41,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:41,318 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-20 03:08:41,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:41,352 INFO L93 Difference]: Finished difference Result 298 states and 816 transitions. [2020-10-20 03:08:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:41,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:08:41,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:41,356 INFO L225 Difference]: With dead ends: 298 [2020-10-20 03:08:41,356 INFO L226 Difference]: Without dead ends: 234 [2020-10-20 03:08:41,357 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 03:08:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-20 03:08:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-20 03:08:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-20 03:08:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-10-20 03:08:41,377 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 9 [2020-10-20 03:08:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:41,377 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-10-20 03:08:41,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-10-20 03:08:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:08:41,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:41,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:41,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:08:41,380 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:41,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1060758680, now seen corresponding path program 1 times [2020-10-20 03:08:41,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:41,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515224399] [2020-10-20 03:08:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:41,447 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 03:08:41,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515224399] [2020-10-20 03:08:41,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:41,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:41,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509443083] [2020-10-20 03:08:41,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:41,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:41,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:41,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:41,450 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 4 states. [2020-10-20 03:08:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:41,503 INFO L93 Difference]: Finished difference Result 346 states and 916 transitions. [2020-10-20 03:08:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:41,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:08:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:41,508 INFO L225 Difference]: With dead ends: 346 [2020-10-20 03:08:41,508 INFO L226 Difference]: Without dead ends: 164 [2020-10-20 03:08:41,508 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 03:08:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-20 03:08:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-20 03:08:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-20 03:08:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 432 transitions. [2020-10-20 03:08:41,521 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 432 transitions. Word has length 11 [2020-10-20 03:08:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:41,522 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 432 transitions. [2020-10-20 03:08:41,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 432 transitions. [2020-10-20 03:08:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:08:41,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:41,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:41,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:08:41,524 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:41,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1476250237, now seen corresponding path program 1 times [2020-10-20 03:08:41,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:41,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749512749] [2020-10-20 03:08:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:41,589 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 03:08:41,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749512749] [2020-10-20 03:08:41,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:41,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:08:41,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440626718] [2020-10-20 03:08:41,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:08:41,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:41,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:08:41,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:08:41,604 INFO L87 Difference]: Start difference. First operand 164 states and 432 transitions. Second operand 4 states. [2020-10-20 03:08:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:41,640 INFO L93 Difference]: Finished difference Result 183 states and 435 transitions. [2020-10-20 03:08:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:41,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:08:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:41,642 INFO L225 Difference]: With dead ends: 183 [2020-10-20 03:08:41,642 INFO L226 Difference]: Without dead ends: 131 [2020-10-20 03:08:41,642 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 03:08:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-20 03:08:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-20 03:08:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-20 03:08:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 303 transitions. [2020-10-20 03:08:41,650 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 303 transitions. Word has length 12 [2020-10-20 03:08:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:41,650 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 303 transitions. [2020-10-20 03:08:41,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:08:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 303 transitions. [2020-10-20 03:08:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:08:41,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:41,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:41,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:08:41,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:41,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1073724632, now seen corresponding path program 1 times [2020-10-20 03:08:41,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:41,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609424751] [2020-10-20 03:08:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:41,714 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 03:08:41,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609424751] [2020-10-20 03:08:41,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:41,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:08:41,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142577885] [2020-10-20 03:08:41,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:41,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:41,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:41,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:41,717 INFO L87 Difference]: Start difference. First operand 131 states and 303 transitions. Second operand 5 states. [2020-10-20 03:08:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:41,760 INFO L93 Difference]: Finished difference Result 118 states and 245 transitions. [2020-10-20 03:08:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:08:41,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 03:08:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:41,762 INFO L225 Difference]: With dead ends: 118 [2020-10-20 03:08:41,762 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 03:08:41,763 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 03:08:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 03:08:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-20 03:08:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 03:08:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 172 transitions. [2020-10-20 03:08:41,768 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 172 transitions. Word has length 13 [2020-10-20 03:08:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:41,768 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 172 transitions. [2020-10-20 03:08:41,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:41,769 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 172 transitions. [2020-10-20 03:08:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:08:41,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:41,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:08:41,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:08:41,771 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:41,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:41,771 INFO L82 PathProgramCache]: Analyzing trace with hash 809328863, now seen corresponding path program 1 times [2020-10-20 03:08:41,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:41,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222121916] [2020-10-20 03:08:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:41,833 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 03:08:41,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222121916] [2020-10-20 03:08:41,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:41,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:08:41,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690427395] [2020-10-20 03:08:41,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:08:41,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:41,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:08:41,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:08:41,836 INFO L87 Difference]: Start difference. First operand 87 states and 172 transitions. Second operand 6 states. [2020-10-20 03:08:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:41,894 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-10-20 03:08:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:08:41,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:08:41,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:41,895 INFO L225 Difference]: With dead ends: 76 [2020-10-20 03:08:41,895 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 03:08:41,896 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 03:08:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 03:08:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-20 03:08:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 03:08:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 132 transitions. [2020-10-20 03:08:41,900 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 132 transitions. Word has length 15 [2020-10-20 03:08:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:41,900 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 132 transitions. [2020-10-20 03:08:41,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:08:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 132 transitions. [2020-10-20 03:08:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:08:41,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:41,902 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 03:08:41,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:08:41,902 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:41,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:41,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1097223765, now seen corresponding path program 1 times [2020-10-20 03:08:41,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:41,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222483007] [2020-10-20 03:08:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:41,956 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 03:08:41,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222483007] [2020-10-20 03:08:41,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:41,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:08:41,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974161935] [2020-10-20 03:08:41,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:41,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:41,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:41,959 INFO L87 Difference]: Start difference. First operand 67 states and 132 transitions. Second operand 5 states. [2020-10-20 03:08:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:41,995 INFO L93 Difference]: Finished difference Result 87 states and 167 transitions. [2020-10-20 03:08:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:41,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:08:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:41,996 INFO L225 Difference]: With dead ends: 87 [2020-10-20 03:08:41,996 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 03:08:41,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:08:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 03:08:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-20 03:08:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 03:08:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-20 03:08:42,000 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2020-10-20 03:08:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:42,000 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-20 03:08:42,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:42,000 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-20 03:08:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:08:42,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:08:42,001 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 03:08:42,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:08:42,002 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:08:42,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:08:42,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1731427213, now seen corresponding path program 2 times [2020-10-20 03:08:42,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:08:42,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837832388] [2020-10-20 03:08:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:08:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:08:42,054 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 03:08:42,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837832388] [2020-10-20 03:08:42,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:08:42,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:08:42,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428678933] [2020-10-20 03:08:42,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:08:42,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:08:42,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:08:42,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:08:42,057 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-10-20 03:08:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:08:42,085 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2020-10-20 03:08:42,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:08:42,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:08:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:08:42,086 INFO L225 Difference]: With dead ends: 39 [2020-10-20 03:08:42,086 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:08:42,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:08:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:08:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:08:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:08:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:08:42,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:08:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:08:42,088 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:08:42,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:08:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:08:42,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:08:42,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:08:42,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:08:42 BasicIcfg [2020-10-20 03:08:42,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:08:42,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:08:42,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:08:42,093 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:08:42,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:08:38" (3/4) ... [2020-10-20 03:08:42,097 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:08:42,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:08:42,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:08:42,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:08:42,110 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:08:42,111 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:08:42,111 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:42,111 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:08:42,166 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:08:42,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:08:42,168 INFO L168 Benchmark]: Toolchain (without parser) took 5205.18 ms. Allocated memory was 40.4 MB in the beginning and 66.6 MB in the end (delta: 26.2 MB). Free memory was 16.5 MB in the beginning and 11.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,175 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.0 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.08 ms. Allocated memory was 40.4 MB in the beginning and 43.5 MB in the end (delta: 3.1 MB). Free memory was 15.6 MB in the beginning and 26.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.57 ms. Allocated memory is still 43.5 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,177 INFO L168 Benchmark]: Boogie Preprocessor took 29.77 ms. Allocated memory is still 43.5 MB. Free memory was 23.9 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,178 INFO L168 Benchmark]: RCFGBuilder took 523.48 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 22.3 MB in the beginning and 14.4 MB in the end (delta: 7.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,178 INFO L168 Benchmark]: TraceAbstraction took 3791.96 ms. Allocated memory was 44.6 MB in the beginning and 66.6 MB in the end (delta: 22.0 MB). Free memory was 13.9 MB in the beginning and 15.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,179 INFO L168 Benchmark]: Witness Printer took 73.93 ms. Allocated memory is still 66.6 MB. Free memory was 15.1 MB in the beginning and 11.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:08:42,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 30.9 MB. Free memory was 7.1 MB in the beginning and 7.0 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 722.08 ms. Allocated memory was 40.4 MB in the beginning and 43.5 MB in the end (delta: 3.1 MB). Free memory was 15.6 MB in the beginning and 26.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 53.57 ms. Allocated memory is still 43.5 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.77 ms. Allocated memory is still 43.5 MB. Free memory was 23.9 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 523.48 ms. Allocated memory was 43.5 MB in the beginning and 44.6 MB in the end (delta: 1.0 MB). Free memory was 22.3 MB in the beginning and 14.4 MB in the end (delta: 7.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3791.96 ms. Allocated memory was 44.6 MB in the beginning and 66.6 MB in the end (delta: 22.0 MB). Free memory was 13.9 MB in the beginning and 15.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 14.3 GB. * Witness Printer took 73.93 ms. Allocated memory is still 66.6 MB. Free memory was 15.1 MB in the beginning and 11.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 999 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2778 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 178 SDtfs, 146 SDslu, 278 SDs, 0 SdLazy, 122 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...