./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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_1.5.800.v20200727-1323.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/thin001_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 e93874e14ae2500244a096d4db4f531f43d584aa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:13:54,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:13:54,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:13:54,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:13:54,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:13:54,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:13:54,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:13:54,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:13:54,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:13:54,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:13:54,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:13:54,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:13:54,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:13:54,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:13:54,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:13:54,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:13:54,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:13:54,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:13:54,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:13:54,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:13:54,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:13:54,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:13:54,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:13:54,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:13:54,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:13:54,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:13:54,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:13:54,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:13:54,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:13:54,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:13:54,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:13:54,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:13:54,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:13:54,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:13:54,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:13:54,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:13:54,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:13:54,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:13:54,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:13:54,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:13:54,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:13:54,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:13:54,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:13:54,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:13:54,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:13:54,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:13:54,851 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:13:54,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:13:54,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:13:54,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:13:54,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:13:54,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:13:54,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:13:54,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:13:54,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:13:54,854 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:13:54,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:13:54,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:13:54,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:13:54,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:13:54,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:13:54,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:13:54,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:13:54,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:13:54,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:13:54,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:13:54,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:13:54,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:13:54,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:13:54,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:13:54,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:13:54,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e93874e14ae2500244a096d4db4f531f43d584aa [2020-12-02 12:13:55,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:13:55,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:13:55,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:13:55,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:13:55,355 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:13:55,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i [2020-12-02 12:13:55,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050523b3e/e24cc28058b949079925a7e9032aea0f/FLAG48bd0fa7b [2020-12-02 12:13:56,254 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:13:56,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i [2020-12-02 12:13:56,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050523b3e/e24cc28058b949079925a7e9032aea0f/FLAG48bd0fa7b [2020-12-02 12:13:56,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050523b3e/e24cc28058b949079925a7e9032aea0f [2020-12-02 12:13:56,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:13:56,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:13:56,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:56,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:13:56,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:13:56,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:56" (1/1) ... [2020-12-02 12:13:56,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421c2b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:56, skipping insertion in model container [2020-12-02 12:13:56,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:13:56" (1/1) ... [2020-12-02 12:13:56,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:13:56,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:13:56,847 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i[950,963] [2020-12-02 12:13:57,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:57,138 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:13:57,154 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin001_pso.oepc.i[950,963] [2020-12-02 12:13:57,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:13:57,334 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:13:57,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57 WrapperNode [2020-12-02 12:13:57,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:13:57,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:57,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:13:57,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:13:57,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:13:57,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:13:57,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:13:57,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:13:57,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (1/1) ... [2020-12-02 12:13:57,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:13:57,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:13:57,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:13:57,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:13:57,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (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 [2020-12-02 12:13:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:13:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:13:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:13:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:13:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:13:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:13:57,530 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:13:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:13:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:13:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:13:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:13:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:13:57,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:13:57,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:13:57,536 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:13:58,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:13:58,092 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:13:58,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:58 BoogieIcfgContainer [2020-12-02 12:13:58,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:13:58,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:13:58,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:13:58,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:13:58,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:13:56" (1/3) ... [2020-12-02 12:13:58,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa3d429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:58, skipping insertion in model container [2020-12-02 12:13:58,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:13:57" (2/3) ... [2020-12-02 12:13:58,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa3d429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:13:58, skipping insertion in model container [2020-12-02 12:13:58,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:58" (3/3) ... [2020-12-02 12:13:58,106 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_pso.oepc.i [2020-12-02 12:13:58,124 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:13:58,125 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:13:58,129 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:13:58,131 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:13:58,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,203 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,207 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:13:58,210 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:13:58,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:13:58,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:13:58,254 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:13:58,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:13:58,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:13:58,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:13:58,255 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:13:58,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:13:58,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:13:58,271 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:13:58,274 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:13:58,278 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-02 12:13:58,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-02 12:13:58,332 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-02 12:13:58,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:13:58,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:13:58,341 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:14:01,442 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-02 12:14:01,562 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:14:01,806 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-12-02 12:14:01,924 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-02 12:14:02,260 INFO L131 LiptonReduction]: Checked pairs total: 2541 [2020-12-02 12:14:02,261 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-02 12:14:02,267 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-02 12:14:02,294 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:14:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:14:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:14:02,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:02,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:02,305 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:02,311 INFO L82 PathProgramCache]: Analyzing trace with hash 995547002, now seen corresponding path program 1 times [2020-12-02 12:14:02,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:02,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993556392] [2020-12-02 12:14:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:02,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993556392] [2020-12-02 12:14:02,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:02,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:14:02,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194238542] [2020-12-02 12:14:02,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:14:02,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:02,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:14:02,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:14:02,666 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-02 12:14:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:02,715 INFO L93 Difference]: Finished difference Result 360 states and 1001 transitions. [2020-12-02 12:14:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:14:02,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:14:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:02,733 INFO L225 Difference]: With dead ends: 360 [2020-12-02 12:14:02,734 INFO L226 Difference]: Without dead ends: 233 [2020-12-02 12:14:02,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:14:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-12-02 12:14:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2020-12-02 12:14:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-02 12:14:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 652 transitions. [2020-12-02 12:14:02,806 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 652 transitions. Word has length 8 [2020-12-02 12:14:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:02,807 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 652 transitions. [2020-12-02 12:14:02,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:14:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 652 transitions. [2020-12-02 12:14:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:14:02,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:02,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:02,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:14:02,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:02,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:02,811 INFO L82 PathProgramCache]: Analyzing trace with hash 755699245, now seen corresponding path program 1 times [2020-12-02 12:14:02,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:02,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897730511] [2020-12-02 12:14:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:02,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897730511] [2020-12-02 12:14:02,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:02,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:02,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611925665] [2020-12-02 12:14:02,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:14:02,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:02,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:14:02,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:14:02,920 INFO L87 Difference]: Start difference. First operand 233 states and 652 transitions. Second operand 4 states. [2020-12-02 12:14:02,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:02,972 INFO L93 Difference]: Finished difference Result 383 states and 1016 transitions. [2020-12-02 12:14:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:02,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:14:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:02,979 INFO L225 Difference]: With dead ends: 383 [2020-12-02 12:14:02,980 INFO L226 Difference]: Without dead ends: 329 [2020-12-02 12:14:02,981 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 [2020-12-02 12:14:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-02 12:14:03,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 284. [2020-12-02 12:14:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-02 12:14:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 779 transitions. [2020-12-02 12:14:03,023 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 779 transitions. Word has length 9 [2020-12-02 12:14:03,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:03,024 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 779 transitions. [2020-12-02 12:14:03,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:14:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 779 transitions. [2020-12-02 12:14:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:14:03,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:03,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:03,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:14:03,027 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:03,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:03,027 INFO L82 PathProgramCache]: Analyzing trace with hash 797195438, now seen corresponding path program 1 times [2020-12-02 12:14:03,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:03,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263860097] [2020-12-02 12:14:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:03,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263860097] [2020-12-02 12:14:03,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:03,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:03,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447150859] [2020-12-02 12:14:03,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:14:03,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:03,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:14:03,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:14:03,112 INFO L87 Difference]: Start difference. First operand 284 states and 779 transitions. Second operand 4 states. [2020-12-02 12:14:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:03,132 INFO L93 Difference]: Finished difference Result 269 states and 727 transitions. [2020-12-02 12:14:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:14:03,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:14:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:03,135 INFO L225 Difference]: With dead ends: 269 [2020-12-02 12:14:03,137 INFO L226 Difference]: Without dead ends: 269 [2020-12-02 12:14:03,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:14:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-12-02 12:14:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2020-12-02 12:14:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-12-02 12:14:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 727 transitions. [2020-12-02 12:14:03,165 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 727 transitions. Word has length 9 [2020-12-02 12:14:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:03,165 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 727 transitions. [2020-12-02 12:14:03,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:14:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 727 transitions. [2020-12-02 12:14:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:14:03,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:03,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:03,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:14:03,171 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1951849563, now seen corresponding path program 1 times [2020-12-02 12:14:03,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:03,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710479412] [2020-12-02 12:14:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:03,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710479412] [2020-12-02 12:14:03,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:03,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:03,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186675749] [2020-12-02 12:14:03,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:14:03,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:03,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:14:03,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:14:03,268 INFO L87 Difference]: Start difference. First operand 269 states and 727 transitions. Second operand 4 states. [2020-12-02 12:14:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:03,286 INFO L93 Difference]: Finished difference Result 290 states and 749 transitions. [2020-12-02 12:14:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:14:03,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-02 12:14:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:03,288 INFO L225 Difference]: With dead ends: 290 [2020-12-02 12:14:03,289 INFO L226 Difference]: Without dead ends: 176 [2020-12-02 12:14:03,289 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 [2020-12-02 12:14:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-02 12:14:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 140. [2020-12-02 12:14:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-02 12:14:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 339 transitions. [2020-12-02 12:14:03,295 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 339 transitions. Word has length 10 [2020-12-02 12:14:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:03,296 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 339 transitions. [2020-12-02 12:14:03,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:14:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 339 transitions. [2020-12-02 12:14:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:14:03,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:03,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:03,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:14:03,298 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:03,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1183830127, now seen corresponding path program 1 times [2020-12-02 12:14:03,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:03,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673584803] [2020-12-02 12:14:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:03,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673584803] [2020-12-02 12:14:03,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:03,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:03,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883643600] [2020-12-02 12:14:03,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:03,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:03,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:03,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:03,406 INFO L87 Difference]: Start difference. First operand 140 states and 339 transitions. Second operand 5 states. [2020-12-02 12:14:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:03,439 INFO L93 Difference]: Finished difference Result 158 states and 372 transitions. [2020-12-02 12:14:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:14:03,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:14:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:03,440 INFO L225 Difference]: With dead ends: 158 [2020-12-02 12:14:03,440 INFO L226 Difference]: Without dead ends: 68 [2020-12-02 12:14:03,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-02 12:14:03,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-02 12:14:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-02 12:14:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-12-02 12:14:03,444 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-12-02 12:14:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:03,444 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-12-02 12:14:03,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:03,444 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-12-02 12:14:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:14:03,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:03,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:03,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:14:03,445 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash -936336033, now seen corresponding path program 1 times [2020-12-02 12:14:03,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:03,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330891333] [2020-12-02 12:14:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:14:03,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330891333] [2020-12-02 12:14:03,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:03,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:03,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196015943] [2020-12-02 12:14:03,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:03,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:03,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:03,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:03,531 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 5 states. [2020-12-02 12:14:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:03,543 INFO L93 Difference]: Finished difference Result 56 states and 112 transitions. [2020-12-02 12:14:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:14:03,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:14:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:03,544 INFO L225 Difference]: With dead ends: 56 [2020-12-02 12:14:03,544 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:14:03,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:03,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:14:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:14:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:14:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:14:03,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-02 12:14:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:03,546 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:14:03,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:14:03,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:14:03,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:14:03,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:14:03 BasicIcfg [2020-12-02 12:14:03,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:14:03,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:14:03,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:14:03,551 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:14:03,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:13:58" (3/4) ... [2020-12-02 12:14:03,555 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:14:03,563 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:14:03,563 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:14:03,564 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:14:03,568 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:14:03,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:14:03,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:03,569 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:03,612 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:14:03,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:14:03,614 INFO L168 Benchmark]: Toolchain (without parser) took 7120.19 ms. Allocated memory was 39.8 MB in the beginning and 107.0 MB in the end (delta: 67.1 MB). Free memory was 24.4 MB in the beginning and 34.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:03,614 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 39.8 MB. Free memory was 24.5 MB in the beginning and 24.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:03,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 837.79 ms. Allocated memory was 39.8 MB in the beginning and 50.3 MB in the end (delta: 10.5 MB). Free memory was 24.1 MB in the beginning and 24.3 MB in the end (delta: -171.1 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:03,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.05 ms. Allocated memory is still 50.3 MB. Free memory was 24.3 MB in the beginning and 22.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:03,616 INFO L168 Benchmark]: Boogie Preprocessor took 28.78 ms. Allocated memory is still 50.3 MB. Free memory was 22.4 MB in the beginning and 21.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:03,617 INFO L168 Benchmark]: RCFGBuilder took 678.17 ms. Allocated memory is still 50.3 MB. Free memory was 21.0 MB in the beginning and 22.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:03,618 INFO L168 Benchmark]: TraceAbstraction took 5453.99 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 22.5 MB in the beginning and 37.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:03,619 INFO L168 Benchmark]: Witness Printer took 61.20 ms. Allocated memory is still 107.0 MB. Free memory was 37.6 MB in the beginning and 34.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:03,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 39.8 MB. Free memory was 24.5 MB in the beginning and 24.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 837.79 ms. Allocated memory was 39.8 MB in the beginning and 50.3 MB in the end (delta: 10.5 MB). Free memory was 24.1 MB in the beginning and 24.3 MB in the end (delta: -171.1 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.05 ms. Allocated memory is still 50.3 MB. Free memory was 24.3 MB in the beginning and 22.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.78 ms. Allocated memory is still 50.3 MB. Free memory was 22.4 MB in the beginning and 21.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 678.17 ms. Allocated memory is still 50.3 MB. Free memory was 21.0 MB in the beginning and 22.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5453.99 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 22.5 MB in the beginning and 37.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.20 ms. Allocated memory is still 107.0 MB. Free memory was 37.6 MB in the beginning and 34.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 856 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 84 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 2541 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 107 SDtfs, 128 SDslu, 96 SDs, 0 SdLazy, 33 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 6 MinimizatonAttempts, 81 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...