/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:32:18,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:32:18,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:32:18,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:32:18,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:32:18,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:32:18,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:32:18,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:32:18,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:32:18,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:32:18,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:32:18,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:32:18,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:32:18,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:32:18,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:32:18,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:32:18,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:32:18,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:32:18,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:32:18,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:32:18,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:32:18,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:32:18,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:32:18,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:32:18,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:32:18,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:32:18,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:32:18,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:32:18,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:32:18,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:32:18,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:32:18,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:32:18,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:32:18,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:32:18,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:32:18,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:32:18,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:32:18,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:32:18,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:32:18,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:32:18,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:32:18,434 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:32:18,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:32:18,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:32:18,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:32:18,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:32:18,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:32:18,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:32:18,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:32:18,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:32:18,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:32:18,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:32:18,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:32:18,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:32:18,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:32:18,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:32:18,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:32:18,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:32:18,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:32:18,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:32:18,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:32:18,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:32:18,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:32:18,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:32:18,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:32:18,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:32:18,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:32:18,836 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:32:18,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:32:18,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f0eef5c/865d146bf9b24e2a9d6c7e94d94b61eb/FLAGac061c484 [2020-12-22 08:32:19,554 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:32:19,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:32:19,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f0eef5c/865d146bf9b24e2a9d6c7e94d94b61eb/FLAGac061c484 [2020-12-22 08:32:19,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f0eef5c/865d146bf9b24e2a9d6c7e94d94b61eb [2020-12-22 08:32:19,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:32:19,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:32:19,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:19,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:32:19,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:32:19,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:19" (1/1) ... [2020-12-22 08:32:19,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228189ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:19, skipping insertion in model container [2020-12-22 08:32:19,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:19" (1/1) ... [2020-12-22 08:32:19,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:32:19,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:32:20,200 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6961,6974] [2020-12-22 08:32:20,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:20,320 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:32:20,402 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6961,6974] [2020-12-22 08:32:20,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:20,466 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:32:20,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20 WrapperNode [2020-12-22 08:32:20,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:20,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:20,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:32:20,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:32:20,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:20,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:32:20,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:32:20,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:32:20,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (1/1) ... [2020-12-22 08:32:20,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:32:20,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:32:20,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:32:20,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:32:20,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (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 [2020-12-22 08:32:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:32:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:32:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:32:20,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:32:21,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:32:21,632 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:32:21,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:21 BoogieIcfgContainer [2020-12-22 08:32:21,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:32:21,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:32:21,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:32:21,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:32:21,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:32:19" (1/3) ... [2020-12-22 08:32:21,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f8149d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:21, skipping insertion in model container [2020-12-22 08:32:21,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:20" (2/3) ... [2020-12-22 08:32:21,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f8149d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:21, skipping insertion in model container [2020-12-22 08:32:21,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:21" (3/3) ... [2020-12-22 08:32:21,644 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:32:21,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:32:21,655 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:32:21,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:32:21,703 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:32:21,703 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:32:21,704 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:32:21,704 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:32:21,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:32:21,704 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:32:21,704 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:32:21,704 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:32:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-12-22 08:32:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:32:21,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:21,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:21,736 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:21,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:21,743 INFO L82 PathProgramCache]: Analyzing trace with hash -652154134, now seen corresponding path program 1 times [2020-12-22 08:32:21,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:21,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376163032] [2020-12-22 08:32:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:22,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376163032] [2020-12-22 08:32:22,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:22,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:22,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505721019] [2020-12-22 08:32:22,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:22,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:22,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:22,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:22,246 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-12-22 08:32:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:22,340 INFO L93 Difference]: Finished difference Result 385 states and 627 transitions. [2020-12-22 08:32:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:22,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:32:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:22,358 INFO L225 Difference]: With dead ends: 385 [2020-12-22 08:32:22,359 INFO L226 Difference]: Without dead ends: 260 [2020-12-22 08:32:22,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-12-22 08:32:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2020-12-22 08:32:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-22 08:32:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 386 transitions. [2020-12-22 08:32:22,485 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 386 transitions. Word has length 73 [2020-12-22 08:32:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:22,486 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 386 transitions. [2020-12-22 08:32:22,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 386 transitions. [2020-12-22 08:32:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:32:22,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:22,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:22,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:32:22,497 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash -399717739, now seen corresponding path program 1 times [2020-12-22 08:32:22,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:22,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694352120] [2020-12-22 08:32:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:22,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694352120] [2020-12-22 08:32:22,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:22,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:22,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891257980] [2020-12-22 08:32:22,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:22,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:22,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:22,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:22,664 INFO L87 Difference]: Start difference. First operand 258 states and 386 transitions. Second operand 3 states. [2020-12-22 08:32:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:22,717 INFO L93 Difference]: Finished difference Result 654 states and 1018 transitions. [2020-12-22 08:32:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:22,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:32:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:22,723 INFO L225 Difference]: With dead ends: 654 [2020-12-22 08:32:22,723 INFO L226 Difference]: Without dead ends: 440 [2020-12-22 08:32:22,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-12-22 08:32:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2020-12-22 08:32:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-12-22 08:32:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 673 transitions. [2020-12-22 08:32:22,765 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 673 transitions. Word has length 74 [2020-12-22 08:32:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:22,766 INFO L481 AbstractCegarLoop]: Abstraction has 438 states and 673 transitions. [2020-12-22 08:32:22,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 673 transitions. [2020-12-22 08:32:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:32:22,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:22,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:22,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:32:22,768 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:22,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1868398039, now seen corresponding path program 1 times [2020-12-22 08:32:22,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:22,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417592353] [2020-12-22 08:32:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:22,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417592353] [2020-12-22 08:32:22,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:22,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:22,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144791431] [2020-12-22 08:32:22,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:22,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:22,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:22,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:22,968 INFO L87 Difference]: Start difference. First operand 438 states and 673 transitions. Second operand 3 states. [2020-12-22 08:32:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:23,033 INFO L93 Difference]: Finished difference Result 1162 states and 1827 transitions. [2020-12-22 08:32:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:23,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:32:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:23,039 INFO L225 Difference]: With dead ends: 1162 [2020-12-22 08:32:23,039 INFO L226 Difference]: Without dead ends: 768 [2020-12-22 08:32:23,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-12-22 08:32:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 766. [2020-12-22 08:32:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-12-22 08:32:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1193 transitions. [2020-12-22 08:32:23,085 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1193 transitions. Word has length 75 [2020-12-22 08:32:23,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:23,086 INFO L481 AbstractCegarLoop]: Abstraction has 766 states and 1193 transitions. [2020-12-22 08:32:23,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1193 transitions. [2020-12-22 08:32:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:32:23,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:23,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:23,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:32:23,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:23,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1093755554, now seen corresponding path program 1 times [2020-12-22 08:32:23,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:23,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178057230] [2020-12-22 08:32:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:23,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178057230] [2020-12-22 08:32:23,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:23,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:23,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334109724] [2020-12-22 08:32:23,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:23,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:23,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:23,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:23,276 INFO L87 Difference]: Start difference. First operand 766 states and 1193 transitions. Second operand 3 states. [2020-12-22 08:32:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:23,350 INFO L93 Difference]: Finished difference Result 2082 states and 3283 transitions. [2020-12-22 08:32:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:23,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:32:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:23,359 INFO L225 Difference]: With dead ends: 2082 [2020-12-22 08:32:23,359 INFO L226 Difference]: Without dead ends: 1360 [2020-12-22 08:32:23,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-12-22 08:32:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1358. [2020-12-22 08:32:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-12-22 08:32:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2125 transitions. [2020-12-22 08:32:23,433 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2125 transitions. Word has length 76 [2020-12-22 08:32:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:23,434 INFO L481 AbstractCegarLoop]: Abstraction has 1358 states and 2125 transitions. [2020-12-22 08:32:23,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2125 transitions. [2020-12-22 08:32:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:32:23,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:23,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:23,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:32:23,436 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:23,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2108543356, now seen corresponding path program 1 times [2020-12-22 08:32:23,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:23,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818684774] [2020-12-22 08:32:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:23,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818684774] [2020-12-22 08:32:23,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:23,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:23,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008868712] [2020-12-22 08:32:23,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:23,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:23,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:23,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:23,510 INFO L87 Difference]: Start difference. First operand 1358 states and 2125 transitions. Second operand 3 states. [2020-12-22 08:32:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:23,633 INFO L93 Difference]: Finished difference Result 3730 states and 5871 transitions. [2020-12-22 08:32:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:23,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:32:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:23,647 INFO L225 Difference]: With dead ends: 3730 [2020-12-22 08:32:23,647 INFO L226 Difference]: Without dead ends: 2416 [2020-12-22 08:32:23,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2020-12-22 08:32:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2020-12-22 08:32:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2414 states. [2020-12-22 08:32:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3773 transitions. [2020-12-22 08:32:23,836 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3773 transitions. Word has length 77 [2020-12-22 08:32:23,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:23,837 INFO L481 AbstractCegarLoop]: Abstraction has 2414 states and 3773 transitions. [2020-12-22 08:32:23,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:23,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3773 transitions. [2020-12-22 08:32:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:32:23,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:23,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:23,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:32:23,839 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:23,840 INFO L82 PathProgramCache]: Analyzing trace with hash -741254085, now seen corresponding path program 1 times [2020-12-22 08:32:23,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:23,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582752501] [2020-12-22 08:32:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:23,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582752501] [2020-12-22 08:32:23,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:23,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:23,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570164407] [2020-12-22 08:32:23,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:23,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:23,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:23,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:23,909 INFO L87 Difference]: Start difference. First operand 2414 states and 3773 transitions. Second operand 3 states. [2020-12-22 08:32:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:24,162 INFO L93 Difference]: Finished difference Result 6642 states and 10399 transitions. [2020-12-22 08:32:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:24,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:32:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:24,185 INFO L225 Difference]: With dead ends: 6642 [2020-12-22 08:32:24,185 INFO L226 Difference]: Without dead ends: 4272 [2020-12-22 08:32:24,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2020-12-22 08:32:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4270. [2020-12-22 08:32:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4270 states. [2020-12-22 08:32:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4270 states to 4270 states and 6637 transitions. [2020-12-22 08:32:24,448 INFO L78 Accepts]: Start accepts. Automaton has 4270 states and 6637 transitions. Word has length 78 [2020-12-22 08:32:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:24,449 INFO L481 AbstractCegarLoop]: Abstraction has 4270 states and 6637 transitions. [2020-12-22 08:32:24,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4270 states and 6637 transitions. [2020-12-22 08:32:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:32:24,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:24,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:24,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:32:24,452 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:24,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:24,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1744404253, now seen corresponding path program 1 times [2020-12-22 08:32:24,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:24,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926046241] [2020-12-22 08:32:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:24,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926046241] [2020-12-22 08:32:24,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:24,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:32:24,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328327623] [2020-12-22 08:32:24,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:32:24,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:24,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:32:24,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:24,864 INFO L87 Difference]: Start difference. First operand 4270 states and 6637 transitions. Second operand 8 states. [2020-12-22 08:32:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:26,536 INFO L93 Difference]: Finished difference Result 25786 states and 39859 transitions. [2020-12-22 08:32:26,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:32:26,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 08:32:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:26,638 INFO L225 Difference]: With dead ends: 25786 [2020-12-22 08:32:26,638 INFO L226 Difference]: Without dead ends: 21560 [2020-12-22 08:32:26,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2020-12-22 08:32:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 21550. [2020-12-22 08:32:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21550 states. [2020-12-22 08:32:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21550 states to 21550 states and 33197 transitions. [2020-12-22 08:32:28,433 INFO L78 Accepts]: Start accepts. Automaton has 21550 states and 33197 transitions. Word has length 79 [2020-12-22 08:32:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:28,434 INFO L481 AbstractCegarLoop]: Abstraction has 21550 states and 33197 transitions. [2020-12-22 08:32:28,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:32:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 21550 states and 33197 transitions. [2020-12-22 08:32:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:32:28,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:28,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:28,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:32:28,436 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1015653356, now seen corresponding path program 1 times [2020-12-22 08:32:28,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:28,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150720800] [2020-12-22 08:32:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:28,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150720800] [2020-12-22 08:32:28,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:28,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:32:28,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100054112] [2020-12-22 08:32:28,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:32:28,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:32:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:28,545 INFO L87 Difference]: Start difference. First operand 21550 states and 33197 transitions. Second operand 6 states. [2020-12-22 08:32:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:32,111 INFO L93 Difference]: Finished difference Result 81812 states and 125936 transitions. [2020-12-22 08:32:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:32,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 08:32:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:32,286 INFO L225 Difference]: With dead ends: 81812 [2020-12-22 08:32:32,286 INFO L226 Difference]: Without dead ends: 60306 [2020-12-22 08:32:32,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:32,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60306 states. [2020-12-22 08:32:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60306 to 60302. [2020-12-22 08:32:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60302 states. [2020-12-22 08:32:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60302 states to 60302 states and 92429 transitions. [2020-12-22 08:32:36,514 INFO L78 Accepts]: Start accepts. Automaton has 60302 states and 92429 transitions. Word has length 81 [2020-12-22 08:32:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:36,515 INFO L481 AbstractCegarLoop]: Abstraction has 60302 states and 92429 transitions. [2020-12-22 08:32:36,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:32:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 60302 states and 92429 transitions. [2020-12-22 08:32:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:32:36,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:36,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:36,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:32:36,517 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:36,517 INFO L82 PathProgramCache]: Analyzing trace with hash 858705489, now seen corresponding path program 1 times [2020-12-22 08:32:36,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:36,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546551018] [2020-12-22 08:32:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:36,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546551018] [2020-12-22 08:32:36,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:36,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:32:36,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127830284] [2020-12-22 08:32:36,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:32:36,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:36,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:32:36,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:36,655 INFO L87 Difference]: Start difference. First operand 60302 states and 92429 transitions. Second operand 8 states. [2020-12-22 08:32:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:50,012 INFO L93 Difference]: Finished difference Result 348828 states and 535444 transitions. [2020-12-22 08:32:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:32:50,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-12-22 08:32:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:51,000 INFO L225 Difference]: With dead ends: 348828 [2020-12-22 08:32:51,000 INFO L226 Difference]: Without dead ends: 288570 [2020-12-22 08:32:51,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:32:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288570 states. [2020-12-22 08:33:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288570 to 120558. [2020-12-22 08:33:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120558 states. [2020-12-22 08:33:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120558 states to 120558 states and 182637 transitions. [2020-12-22 08:33:01,088 INFO L78 Accepts]: Start accepts. Automaton has 120558 states and 182637 transitions. Word has length 81 [2020-12-22 08:33:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:01,088 INFO L481 AbstractCegarLoop]: Abstraction has 120558 states and 182637 transitions. [2020-12-22 08:33:01,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:33:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 120558 states and 182637 transitions. [2020-12-22 08:33:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:33:01,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:01,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:01,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:33:01,090 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:01,091 INFO L82 PathProgramCache]: Analyzing trace with hash 830610186, now seen corresponding path program 1 times [2020-12-22 08:33:01,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:01,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273294045] [2020-12-22 08:33:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273294045] [2020-12-22 08:33:01,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:01,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:01,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358105904] [2020-12-22 08:33:01,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:01,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:01,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:01,218 INFO L87 Difference]: Start difference. First operand 120558 states and 182637 transitions. Second operand 5 states. [2020-12-22 08:33:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:16,001 INFO L93 Difference]: Finished difference Result 245424 states and 369582 transitions. [2020-12-22 08:33:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:33:16,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:33:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:16,614 INFO L225 Difference]: With dead ends: 245424 [2020-12-22 08:33:16,614 INFO L226 Difference]: Without dead ends: 245422 [2020-12-22 08:33:16,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245422 states. [2020-12-22 08:33:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245422 to 124910. [2020-12-22 08:33:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124910 states. [2020-12-22 08:33:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124910 states to 124910 states and 186989 transitions. [2020-12-22 08:33:27,083 INFO L78 Accepts]: Start accepts. Automaton has 124910 states and 186989 transitions. Word has length 82 [2020-12-22 08:33:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:27,083 INFO L481 AbstractCegarLoop]: Abstraction has 124910 states and 186989 transitions. [2020-12-22 08:33:27,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 124910 states and 186989 transitions. [2020-12-22 08:33:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:33:27,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:27,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:27,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:33:27,094 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:27,095 INFO L82 PathProgramCache]: Analyzing trace with hash -10314879, now seen corresponding path program 1 times [2020-12-22 08:33:27,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:27,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871958183] [2020-12-22 08:33:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:27,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871958183] [2020-12-22 08:33:27,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:27,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:27,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501007148] [2020-12-22 08:33:27,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:27,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:27,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:27,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:27,187 INFO L87 Difference]: Start difference. First operand 124910 states and 186989 transitions. Second operand 3 states. [2020-12-22 08:33:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:37,319 INFO L93 Difference]: Finished difference Result 270676 states and 404737 transitions. [2020-12-22 08:33:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:37,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 08:33:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:37,525 INFO L225 Difference]: With dead ends: 270676 [2020-12-22 08:33:37,525 INFO L226 Difference]: Without dead ends: 145810 [2020-12-22 08:33:37,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145810 states. [2020-12-22 08:33:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145810 to 145808. [2020-12-22 08:33:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145808 states. [2020-12-22 08:33:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145808 states to 145808 states and 217439 transitions. [2020-12-22 08:33:48,806 INFO L78 Accepts]: Start accepts. Automaton has 145808 states and 217439 transitions. Word has length 83 [2020-12-22 08:33:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:48,807 INFO L481 AbstractCegarLoop]: Abstraction has 145808 states and 217439 transitions. [2020-12-22 08:33:48,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 145808 states and 217439 transitions. [2020-12-22 08:33:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:33:48,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:48,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:48,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:33:48,881 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:48,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1809041298, now seen corresponding path program 1 times [2020-12-22 08:33:48,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:48,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089961369] [2020-12-22 08:33:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:49,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089961369] [2020-12-22 08:33:49,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247330197] [2020-12-22 08:33:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:33:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:49,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 08:33:49,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:33:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:33:49,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:33:49,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2020-12-22 08:33:49,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766496035] [2020-12-22 08:33:49,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:33:49,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:49,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:33:49,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:33:49,867 INFO L87 Difference]: Start difference. First operand 145808 states and 217439 transitions. Second operand 14 states. [2020-12-22 08:33:51,131 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2020-12-22 08:35:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:59,249 INFO L93 Difference]: Finished difference Result 1560862 states and 2308359 transitions. [2020-12-22 08:35:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-12-22 08:35:59,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-12-22 08:35:59,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:02,540 INFO L225 Difference]: With dead ends: 1560862 [2020-12-22 08:36:02,540 INFO L226 Difference]: Without dead ends: 1415100 [2020-12-22 08:36:03,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6794 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3063, Invalid=12437, Unknown=0, NotChecked=0, Total=15500 [2020-12-22 08:36:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415100 states.