./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe018_pso.opt.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/safe018_pso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da07e8179710920ae52eed2d5bbb89ee6bc979e4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:09:26,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:09:26,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:09:26,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:09:26,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:09:26,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:09:26,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:09:26,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:09:26,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:09:26,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:09:26,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:09:26,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:09:26,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:09:26,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:09:26,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:09:26,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:09:26,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:09:26,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:09:26,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:09:26,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:09:26,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:09:26,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:09:26,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:09:26,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:09:26,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:09:26,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:09:26,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:09:26,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:09:26,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:09:26,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:09:26,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:09:26,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:09:26,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:09:26,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:09:26,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:09:26,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:09:26,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:09:26,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:09:26,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:09:26,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:09:26,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:09:26,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:09:26,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:09:26,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:09:26,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:09:26,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:09:26,880 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:09:26,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:09:26,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:09:26,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:09:26,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:09:26,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:09:26,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:09:26,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:09:26,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:09:26,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:09:26,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:09:26,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:09:26,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:09:26,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:09:26,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:09:26,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:09:26,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:09:26,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:09:26,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:09:26,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:09:26,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:09:26,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:09:26,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:09:26,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:09:26,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:09:26,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da07e8179710920ae52eed2d5bbb89ee6bc979e4 [2020-12-02 12:09:27,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:09:27,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:09:27,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:09:27,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:09:27,416 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:09:27,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i [2020-12-02 12:09:27,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909e46ab3/6debc34ae3844a388701c171b92204c5/FLAGcc93f25bb [2020-12-02 12:09:28,260 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:09:28,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe018_pso.opt.i [2020-12-02 12:09:28,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909e46ab3/6debc34ae3844a388701c171b92204c5/FLAGcc93f25bb [2020-12-02 12:09:28,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909e46ab3/6debc34ae3844a388701c171b92204c5 [2020-12-02 12:09:28,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:09:28,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:09:28,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:28,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:09:28,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:09:28,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:28" (1/1) ... [2020-12-02 12:09:28,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d302128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:28, skipping insertion in model container [2020-12-02 12:09:28,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:28" (1/1) ... [2020-12-02 12:09:28,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:09:28,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:09:28,848 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/safe018_pso.opt.i[949,962] [2020-12-02 12:09:29,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:29,135 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:09:29,153 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/safe018_pso.opt.i[949,962] [2020-12-02 12:09:29,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:29,333 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:09:29,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29 WrapperNode [2020-12-02 12:09:29,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:29,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:29,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:09:29,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:09:29,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:29,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:09:29,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:09:29,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:09:29,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (1/1) ... [2020-12-02 12:09:29,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:09:29,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:09:29,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:09:29,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:09:29,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (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 12:09:29,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:09:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:09:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:09:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:09:29,548 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:09:29,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:09:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:09:29,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:09:29,549 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:09:29,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:09:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:09:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:09:29,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:09:29,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:09:29,552 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 12:09:30,369 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:09:30,370 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:09:30,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:30 BoogieIcfgContainer [2020-12-02 12:09:30,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:09:30,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:09:30,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:09:30,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:09:30,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:09:28" (1/3) ... [2020-12-02 12:09:30,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2932cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:30, skipping insertion in model container [2020-12-02 12:09:30,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:29" (2/3) ... [2020-12-02 12:09:30,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2932cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:30, skipping insertion in model container [2020-12-02 12:09:30,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:30" (3/3) ... [2020-12-02 12:09:30,386 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-12-02 12:09:30,403 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:09:30,403 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:09:30,407 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:09:30,408 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:09:30,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,466 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,471 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,471 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,476 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,477 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,478 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,479 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,484 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,484 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,490 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,490 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,492 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,492 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:30,494 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:09:30,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:09:30,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:09:30,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:09:30,536 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:09:30,536 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:09:30,536 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:09:30,536 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:09:30,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:09:30,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:09:30,551 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:09:30,553 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:09:30,557 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:09:30,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-02 12:09:30,608 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-02 12:09:30,610 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:09:30,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-02 12:09:30,626 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-02 12:09:33,463 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:09:33,571 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 12:09:33,816 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:09:33,935 INFO L131 LiptonReduction]: Checked pairs total: 2020 [2020-12-02 12:09:33,935 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-02 12:09:33,943 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-02 12:09:33,990 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-12-02 12:09:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-12-02 12:09:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:09:34,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:34,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:34,003 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:34,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1647941983, now seen corresponding path program 1 times [2020-12-02 12:09:34,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:34,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861163379] [2020-12-02 12:09:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:34,215 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 12:09:34,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861163379] [2020-12-02 12:09:34,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:34,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:34,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568842956] [2020-12-02 12:09:34,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:09:34,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:34,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:09:34,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:09:34,241 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-12-02 12:09:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:34,276 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-12-02 12:09:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:09:34,278 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:09:34,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:34,295 INFO L225 Difference]: With dead ends: 274 [2020-12-02 12:09:34,295 INFO L226 Difference]: Without dead ends: 226 [2020-12-02 12:09:34,297 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 [2020-12-02 12:09:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-02 12:09:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-02 12:09:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-02 12:09:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-12-02 12:09:34,375 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-12-02 12:09:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:34,376 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-12-02 12:09:34,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:09:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-12-02 12:09:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:09:34,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:34,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:34,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:09:34,379 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash -453422130, now seen corresponding path program 1 times [2020-12-02 12:09:34,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:34,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988844255] [2020-12-02 12:09:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:34,643 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 12:09:34,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988844255] [2020-12-02 12:09:34,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:34,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:34,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440899748] [2020-12-02 12:09:34,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:34,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:34,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:34,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:34,649 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-12-02 12:09:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:34,709 INFO L93 Difference]: Finished difference Result 268 states and 719 transitions. [2020-12-02 12:09:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:34,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:09:34,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:34,714 INFO L225 Difference]: With dead ends: 268 [2020-12-02 12:09:34,715 INFO L226 Difference]: Without dead ends: 220 [2020-12-02 12:09:34,716 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 12:09:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-02 12:09:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-12-02 12:09:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-02 12:09:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 612 transitions. [2020-12-02 12:09:34,747 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 612 transitions. Word has length 9 [2020-12-02 12:09:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:34,747 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 612 transitions. [2020-12-02 12:09:34,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 612 transitions. [2020-12-02 12:09:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:09:34,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:34,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:34,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:09:34,751 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1814079141, now seen corresponding path program 1 times [2020-12-02 12:09:34,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:34,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043630403] [2020-12-02 12:09:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:34,893 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 12:09:34,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043630403] [2020-12-02 12:09:34,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:34,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:34,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950554252] [2020-12-02 12:09:34,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:34,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:34,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:34,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:34,908 INFO L87 Difference]: Start difference. First operand 220 states and 612 transitions. Second operand 5 states. [2020-12-02 12:09:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:35,010 INFO L93 Difference]: Finished difference Result 295 states and 800 transitions. [2020-12-02 12:09:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:09:35,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:09:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:35,017 INFO L225 Difference]: With dead ends: 295 [2020-12-02 12:09:35,018 INFO L226 Difference]: Without dead ends: 250 [2020-12-02 12:09:35,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:09:35,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-02 12:09:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2020-12-02 12:09:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-12-02 12:09:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 641 transitions. [2020-12-02 12:09:35,077 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 641 transitions. Word has length 10 [2020-12-02 12:09:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:35,078 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 641 transitions. [2020-12-02 12:09:35,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 641 transitions. [2020-12-02 12:09:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:09:35,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:35,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:35,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:09:35,084 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:35,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1172176569, now seen corresponding path program 1 times [2020-12-02 12:09:35,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:35,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697420903] [2020-12-02 12:09:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:35,192 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 12:09:35,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697420903] [2020-12-02 12:09:35,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:35,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:35,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168046565] [2020-12-02 12:09:35,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:35,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:35,196 INFO L87 Difference]: Start difference. First operand 232 states and 641 transitions. Second operand 5 states. [2020-12-02 12:09:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:35,233 INFO L93 Difference]: Finished difference Result 250 states and 665 transitions. [2020-12-02 12:09:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:35,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:09:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:35,236 INFO L225 Difference]: With dead ends: 250 [2020-12-02 12:09:35,237 INFO L226 Difference]: Without dead ends: 214 [2020-12-02 12:09:35,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-02 12:09:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-12-02 12:09:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-02 12:09:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 581 transitions. [2020-12-02 12:09:35,249 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 581 transitions. Word has length 10 [2020-12-02 12:09:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:35,249 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 581 transitions. [2020-12-02 12:09:35,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 581 transitions. [2020-12-02 12:09:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:09:35,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:35,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:35,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:09:35,252 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:35,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash 329174463, now seen corresponding path program 1 times [2020-12-02 12:09:35,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:35,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144478644] [2020-12-02 12:09:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:35,318 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 12:09:35,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144478644] [2020-12-02 12:09:35,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:35,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:35,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601839212] [2020-12-02 12:09:35,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:35,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:35,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:35,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:35,321 INFO L87 Difference]: Start difference. First operand 214 states and 581 transitions. Second operand 5 states. [2020-12-02 12:09:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:35,369 INFO L93 Difference]: Finished difference Result 226 states and 595 transitions. [2020-12-02 12:09:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:35,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:09:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:35,372 INFO L225 Difference]: With dead ends: 226 [2020-12-02 12:09:35,372 INFO L226 Difference]: Without dead ends: 202 [2020-12-02 12:09:35,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-02 12:09:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-02 12:09:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-02 12:09:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 543 transitions. [2020-12-02 12:09:35,382 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 543 transitions. Word has length 11 [2020-12-02 12:09:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:35,383 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 543 transitions. [2020-12-02 12:09:35,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 543 transitions. [2020-12-02 12:09:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:09:35,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:35,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:35,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:09:35,387 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:35,388 INFO L82 PathProgramCache]: Analyzing trace with hash 400886096, now seen corresponding path program 1 times [2020-12-02 12:09:35,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:35,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478445007] [2020-12-02 12:09:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:35,517 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 12:09:35,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478445007] [2020-12-02 12:09:35,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:35,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:35,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42592822] [2020-12-02 12:09:35,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:09:35,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:35,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:09:35,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:35,522 INFO L87 Difference]: Start difference. First operand 202 states and 543 transitions. Second operand 6 states. [2020-12-02 12:09:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:35,570 INFO L93 Difference]: Finished difference Result 247 states and 648 transitions. [2020-12-02 12:09:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:35,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-02 12:09:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:35,573 INFO L225 Difference]: With dead ends: 247 [2020-12-02 12:09:35,573 INFO L226 Difference]: Without dead ends: 106 [2020-12-02 12:09:35,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:09:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-02 12:09:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-02 12:09:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-02 12:09:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-12-02 12:09:35,578 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 11 [2020-12-02 12:09:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:35,579 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-12-02 12:09:35,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:09:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-12-02 12:09:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:09:35,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:35,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:35,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:09:35,584 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1225814647, now seen corresponding path program 1 times [2020-12-02 12:09:35,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:35,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218167082] [2020-12-02 12:09:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:35,665 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 12:09:35,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218167082] [2020-12-02 12:09:35,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:35,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:35,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883293171] [2020-12-02 12:09:35,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:35,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:35,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:35,670 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-12-02 12:09:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:35,726 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-12-02 12:09:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:35,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:09:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:35,728 INFO L225 Difference]: With dead ends: 148 [2020-12-02 12:09:35,729 INFO L226 Difference]: Without dead ends: 76 [2020-12-02 12:09:35,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:09:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-02 12:09:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-02 12:09:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-02 12:09:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-12-02 12:09:35,734 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-12-02 12:09:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:35,735 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-12-02 12:09:35,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-12-02 12:09:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:09:35,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:35,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:35,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:09:35,737 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:35,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:35,738 INFO L82 PathProgramCache]: Analyzing trace with hash 532831146, now seen corresponding path program 1 times [2020-12-02 12:09:35,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:35,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914037429] [2020-12-02 12:09:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:35,820 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 12:09:35,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914037429] [2020-12-02 12:09:35,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:35,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:35,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028213191] [2020-12-02 12:09:35,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:35,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:35,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:35,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:35,831 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-12-02 12:09:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:35,863 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-12-02 12:09:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:35,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:09:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:35,865 INFO L225 Difference]: With dead ends: 87 [2020-12-02 12:09:35,865 INFO L226 Difference]: Without dead ends: 66 [2020-12-02 12:09:35,866 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 [2020-12-02 12:09:35,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-02 12:09:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-02 12:09:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-02 12:09:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-12-02 12:09:35,869 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-12-02 12:09:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:35,870 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-12-02 12:09:35,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-12-02 12:09:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:09:35,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:35,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:35,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:09:35,871 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:35,872 INFO L82 PathProgramCache]: Analyzing trace with hash -206155871, now seen corresponding path program 1 times [2020-12-02 12:09:35,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:35,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726515674] [2020-12-02 12:09:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:35,923 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 12:09:35,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726515674] [2020-12-02 12:09:35,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:35,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:35,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671113554] [2020-12-02 12:09:35,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:35,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:35,927 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-12-02 12:09:35,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:35,981 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-12-02 12:09:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:35,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:09:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:35,982 INFO L225 Difference]: With dead ends: 62 [2020-12-02 12:09:35,983 INFO L226 Difference]: Without dead ends: 47 [2020-12-02 12:09:35,983 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 [2020-12-02 12:09:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-02 12:09:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-02 12:09:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-02 12:09:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-12-02 12:09:35,986 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-12-02 12:09:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:35,987 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-12-02 12:09:35,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-12-02 12:09:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:09:35,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:35,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:35,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:09:35,989 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:35,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:35,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2107760638, now seen corresponding path program 1 times [2020-12-02 12:09:35,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:35,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295034207] [2020-12-02 12:09:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:36,066 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 12:09:36,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295034207] [2020-12-02 12:09:36,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:36,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:09:36,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786201763] [2020-12-02 12:09:36,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:09:36,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:36,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:09:36,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:36,070 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-12-02 12:09:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:36,124 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-12-02 12:09:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:09:36,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:09:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:36,126 INFO L225 Difference]: With dead ends: 40 [2020-12-02 12:09:36,126 INFO L226 Difference]: Without dead ends: 34 [2020-12-02 12:09:36,127 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 [2020-12-02 12:09:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-02 12:09:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-02 12:09:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-02 12:09:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-12-02 12:09:36,130 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-12-02 12:09:36,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:36,130 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-12-02 12:09:36,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:09:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-12-02 12:09:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:09:36,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:36,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:36,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:09:36,132 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash 202243322, now seen corresponding path program 1 times [2020-12-02 12:09:36,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:36,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109438707] [2020-12-02 12:09:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:36,184 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 12:09:36,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109438707] [2020-12-02 12:09:36,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:36,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:36,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980152800] [2020-12-02 12:09:36,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:36,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:36,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:36,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:36,187 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-12-02 12:09:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:36,216 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-02 12:09:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:36,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-02 12:09:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:36,217 INFO L225 Difference]: With dead ends: 33 [2020-12-02 12:09:36,217 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:09:36,218 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 [2020-12-02 12:09:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:09:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:09:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:09:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:09:36,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-02 12:09:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:36,219 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:09:36,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:09:36,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:09:36,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:09:36,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:09:36 BasicIcfg [2020-12-02 12:09:36,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:09:36,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:09:36,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:09:36,225 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:09:36,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:30" (3/4) ... [2020-12-02 12:09:36,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:09:36,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:09:36,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:09:36,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:09:36,244 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:09:36,244 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:09:36,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:36,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:36,292 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:09:36,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:09:36,294 INFO L168 Benchmark]: Toolchain (without parser) took 7752.54 ms. Allocated memory was 52.4 MB in the beginning and 117.4 MB in the end (delta: 65.0 MB). Free memory was 27.8 MB in the beginning and 58.1 MB in the end (delta: -30.3 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:36,294 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory is still 36.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:09:36,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 791.44 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.5 MB in the beginning and 34.3 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:36,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.65 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 32.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:36,297 INFO L168 Benchmark]: Boogie Preprocessor took 31.07 ms. Allocated memory is still 65.0 MB. Free memory was 32.2 MB in the beginning and 31.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:09:36,297 INFO L168 Benchmark]: RCFGBuilder took 941.11 ms. Allocated memory is still 65.0 MB. Free memory was 31.0 MB in the beginning and 43.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:36,298 INFO L168 Benchmark]: TraceAbstraction took 5846.06 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 43.3 MB in the beginning and 61.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:36,299 INFO L168 Benchmark]: Witness Printer took 67.43 ms. Allocated memory is still 117.4 MB. Free memory was 61.2 MB in the beginning and 58.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:36,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 52.4 MB. Free memory is still 36.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 791.44 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.5 MB in the beginning and 34.3 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.65 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 32.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.07 ms. Allocated memory is still 65.0 MB. Free memory was 32.2 MB in the beginning and 31.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 941.11 ms. Allocated memory is still 65.0 MB. Free memory was 31.0 MB in the beginning and 43.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5846.06 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 43.3 MB in the beginning and 61.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * Witness Printer took 67.43 ms. Allocated memory is still 117.4 MB. Free memory was 61.2 MB in the beginning and 58.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 758 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 53 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2020 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 220 SDtfs, 244 SDslu, 367 SDs, 0 SdLazy, 167 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 6005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...