/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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:08:50,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:08:50,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:08:50,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:08:50,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:08:50,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:08:50,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:08:50,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:08:50,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:08:50,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:08:50,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:08:50,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:08:50,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:08:50,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:08:50,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:08:50,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:08:50,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:08:50,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:08:50,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:08:50,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:08:50,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:08:50,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:08:50,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:08:50,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:08:50,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:08:50,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:08:50,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:08:50,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:08:50,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:08:50,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:08:50,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:08:50,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:08:50,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:08:50,603 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:08:50,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:08:50,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:08:50,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:08:50,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:08:50,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:08:50,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:08:50,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:08:50,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:08:50,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:08:50,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:08:50,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:08:50,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:08:50,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:08:50,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:08:50,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:08:50,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:08:50,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:08:50,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:08:50,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:08:50,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:08:50,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:08:51,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:08:51,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:08:51,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:08:51,056 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:08:51,057 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:08:51,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:08:51,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ba26242/7718e745b191458a98af4fe694a34894/FLAG1d7a14db9 [2020-12-22 08:08:51,853 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:08:51,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:08:51,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ba26242/7718e745b191458a98af4fe694a34894/FLAG1d7a14db9 [2020-12-22 08:08:52,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ba26242/7718e745b191458a98af4fe694a34894 [2020-12-22 08:08:52,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:08:52,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:08:52,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:08:52,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:08:52,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:08:52,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:08:52" (1/1) ... [2020-12-22 08:08:52,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad40615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:52, skipping insertion in model container [2020-12-22 08:08:52,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:08:52" (1/1) ... [2020-12-22 08:08:52,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:08:52,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:08:52,740 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[24098,24111] [2020-12-22 08:08:53,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:08:53,098 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:08:53,333 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[24098,24111] [2020-12-22 08:08:53,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:08:53,450 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:08:53,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53 WrapperNode [2020-12-22 08:08:53,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:08:53,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:08:53,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:08:53,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:08:53,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:08:53,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:08:53,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:08:53,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:08:53,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (1/1) ... [2020-12-22 08:08:53,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:08:53,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:08:53,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:08:53,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:08:53,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (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 08:08:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:08:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:08:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:08:53,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:08:55,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:08:55,993 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:08:55,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:08:55 BoogieIcfgContainer [2020-12-22 08:08:55,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:08:55,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:08:55,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:08:56,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:08:56,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:08:52" (1/3) ... [2020-12-22 08:08:56,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db3b50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:08:56, skipping insertion in model container [2020-12-22 08:08:56,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:08:53" (2/3) ... [2020-12-22 08:08:56,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db3b50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:08:56, skipping insertion in model container [2020-12-22 08:08:56,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:08:55" (3/3) ... [2020-12-22 08:08:56,004 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:08:56,011 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:08:56,017 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:08:56,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:08:56,067 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:08:56,067 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:08:56,067 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:08:56,067 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:08:56,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:08:56,068 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:08:56,068 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:08:56,068 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:08:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states. [2020-12-22 08:08:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 08:08:56,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:56,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:56,119 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash 888634146, now seen corresponding path program 1 times [2020-12-22 08:08:56,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:56,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995153233] [2020-12-22 08:08:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:56,950 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 08:08:56,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995153233] [2020-12-22 08:08:56,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:56,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:56,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576990997] [2020-12-22 08:08:56,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:56,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:56,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:56,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:56,975 INFO L87 Difference]: Start difference. First operand 592 states. Second operand 3 states. [2020-12-22 08:08:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:57,224 INFO L93 Difference]: Finished difference Result 1084 states and 1917 transitions. [2020-12-22 08:08:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:57,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2020-12-22 08:08:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:57,266 INFO L225 Difference]: With dead ends: 1084 [2020-12-22 08:08:57,266 INFO L226 Difference]: Without dead ends: 901 [2020-12-22 08:08:57,273 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 08:08:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-12-22 08:08:57,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 899. [2020-12-22 08:08:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-12-22 08:08:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1410 transitions. [2020-12-22 08:08:57,426 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1410 transitions. Word has length 238 [2020-12-22 08:08:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:57,432 INFO L481 AbstractCegarLoop]: Abstraction has 899 states and 1410 transitions. [2020-12-22 08:08:57,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1410 transitions. [2020-12-22 08:08:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 08:08:57,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:57,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:57,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:08:57,449 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:57,451 INFO L82 PathProgramCache]: Analyzing trace with hash -749177318, now seen corresponding path program 1 times [2020-12-22 08:08:57,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:57,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292535087] [2020-12-22 08:08:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:58,098 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 08:08:58,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292535087] [2020-12-22 08:08:58,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:58,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:08:58,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929342976] [2020-12-22 08:08:58,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:08:58,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:08:58,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:08:58,106 INFO L87 Difference]: Start difference. First operand 899 states and 1410 transitions. Second operand 4 states. [2020-12-22 08:08:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:58,329 INFO L93 Difference]: Finished difference Result 2651 states and 4153 transitions. [2020-12-22 08:08:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:08:58,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-12-22 08:08:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:58,343 INFO L225 Difference]: With dead ends: 2651 [2020-12-22 08:08:58,343 INFO L226 Difference]: Without dead ends: 1763 [2020-12-22 08:08:58,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:08:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-12-22 08:08:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1761. [2020-12-22 08:08:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2020-12-22 08:08:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2744 transitions. [2020-12-22 08:08:58,469 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2744 transitions. Word has length 238 [2020-12-22 08:08:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:58,470 INFO L481 AbstractCegarLoop]: Abstraction has 1761 states and 2744 transitions. [2020-12-22 08:08:58,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:08:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2744 transitions. [2020-12-22 08:08:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 08:08:58,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:58,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:58,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:08:58,478 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash -396010790, now seen corresponding path program 1 times [2020-12-22 08:08:58,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:58,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602283299] [2020-12-22 08:08:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:58,802 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 08:08:58,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602283299] [2020-12-22 08:08:58,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:58,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:58,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421145926] [2020-12-22 08:08:58,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:58,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:58,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:58,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:58,823 INFO L87 Difference]: Start difference. First operand 1761 states and 2744 transitions. Second operand 3 states. [2020-12-22 08:08:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:59,144 INFO L93 Difference]: Finished difference Result 5096 states and 7908 transitions. [2020-12-22 08:08:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:59,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-12-22 08:08:59,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:59,167 INFO L225 Difference]: With dead ends: 5096 [2020-12-22 08:08:59,168 INFO L226 Difference]: Without dead ends: 3460 [2020-12-22 08:08:59,171 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 08:08:59,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2020-12-22 08:08:59,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3458. [2020-12-22 08:08:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3458 states. [2020-12-22 08:08:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5359 transitions. [2020-12-22 08:08:59,370 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5359 transitions. Word has length 240 [2020-12-22 08:08:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:59,377 INFO L481 AbstractCegarLoop]: Abstraction has 3458 states and 5359 transitions. [2020-12-22 08:08:59,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5359 transitions. [2020-12-22 08:08:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 08:08:59,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:59,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:59,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:08:59,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:59,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:59,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1683461535, now seen corresponding path program 1 times [2020-12-22 08:08:59,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:59,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062972403] [2020-12-22 08:08:59,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:59,542 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 08:08:59,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062972403] [2020-12-22 08:08:59,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:59,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:59,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509698078] [2020-12-22 08:08:59,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:59,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:59,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:59,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:59,549 INFO L87 Difference]: Start difference. First operand 3458 states and 5359 transitions. Second operand 3 states. [2020-12-22 08:08:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:59,897 INFO L93 Difference]: Finished difference Result 10307 states and 15961 transitions. [2020-12-22 08:08:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:59,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-12-22 08:08:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:59,934 INFO L225 Difference]: With dead ends: 10307 [2020-12-22 08:08:59,934 INFO L226 Difference]: Without dead ends: 6887 [2020-12-22 08:08:59,943 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 08:08:59,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6887 states. [2020-12-22 08:09:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6887 to 3477. [2020-12-22 08:09:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3477 states. [2020-12-22 08:09:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 5387 transitions. [2020-12-22 08:09:00,290 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 5387 transitions. Word has length 240 [2020-12-22 08:09:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:00,290 INFO L481 AbstractCegarLoop]: Abstraction has 3477 states and 5387 transitions. [2020-12-22 08:09:00,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 5387 transitions. [2020-12-22 08:09:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 08:09:00,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:00,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:00,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:09:00,301 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:00,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2119940694, now seen corresponding path program 1 times [2020-12-22 08:09:00,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:00,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745172320] [2020-12-22 08:09:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:00,417 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 08:09:00,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745172320] [2020-12-22 08:09:00,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:00,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:00,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849004044] [2020-12-22 08:09:00,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:00,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:00,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:00,421 INFO L87 Difference]: Start difference. First operand 3477 states and 5387 transitions. Second operand 3 states. [2020-12-22 08:09:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:00,838 INFO L93 Difference]: Finished difference Result 10326 states and 15982 transitions. [2020-12-22 08:09:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:00,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 08:09:00,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:00,879 INFO L225 Difference]: With dead ends: 10326 [2020-12-22 08:09:00,880 INFO L226 Difference]: Without dead ends: 6905 [2020-12-22 08:09:00,887 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 08:09:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2020-12-22 08:09:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 3495. [2020-12-22 08:09:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3495 states. [2020-12-22 08:09:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5408 transitions. [2020-12-22 08:09:01,186 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5408 transitions. Word has length 241 [2020-12-22 08:09:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:01,186 INFO L481 AbstractCegarLoop]: Abstraction has 3495 states and 5408 transitions. [2020-12-22 08:09:01,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5408 transitions. [2020-12-22 08:09:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 08:09:01,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:01,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:01,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:09:01,195 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:01,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1326316299, now seen corresponding path program 1 times [2020-12-22 08:09:01,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:01,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538711165] [2020-12-22 08:09:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:01,469 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 08:09:01,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538711165] [2020-12-22 08:09:01,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:01,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:01,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569955689] [2020-12-22 08:09:01,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:01,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:01,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:01,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:01,472 INFO L87 Difference]: Start difference. First operand 3495 states and 5408 transitions. Second operand 3 states. [2020-12-22 08:09:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:01,999 INFO L93 Difference]: Finished difference Result 10026 states and 15449 transitions. [2020-12-22 08:09:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:02,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-12-22 08:09:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:02,050 INFO L225 Difference]: With dead ends: 10026 [2020-12-22 08:09:02,050 INFO L226 Difference]: Without dead ends: 6772 [2020-12-22 08:09:02,057 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 08:09:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2020-12-22 08:09:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6770. [2020-12-22 08:09:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6770 states. [2020-12-22 08:09:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6770 states to 6770 states and 10400 transitions. [2020-12-22 08:09:02,592 INFO L78 Accepts]: Start accepts. Automaton has 6770 states and 10400 transitions. Word has length 242 [2020-12-22 08:09:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:02,593 INFO L481 AbstractCegarLoop]: Abstraction has 6770 states and 10400 transitions. [2020-12-22 08:09:02,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6770 states and 10400 transitions. [2020-12-22 08:09:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 08:09:02,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:02,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:02,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:09:02,610 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1679226606, now seen corresponding path program 1 times [2020-12-22 08:09:02,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:02,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814062069] [2020-12-22 08:09:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:03,069 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 08:09:03,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814062069] [2020-12-22 08:09:03,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:03,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:09:03,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445841867] [2020-12-22 08:09:03,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:09:03,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:03,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:09:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:09:03,072 INFO L87 Difference]: Start difference. First operand 6770 states and 10400 transitions. Second operand 5 states. [2020-12-22 08:09:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:04,053 INFO L93 Difference]: Finished difference Result 19780 states and 30329 transitions. [2020-12-22 08:09:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:09:04,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-12-22 08:09:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:04,084 INFO L225 Difference]: With dead ends: 19780 [2020-12-22 08:09:04,084 INFO L226 Difference]: Without dead ends: 13065 [2020-12-22 08:09:04,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:09:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13065 states. [2020-12-22 08:09:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13065 to 13063. [2020-12-22 08:09:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13063 states. [2020-12-22 08:09:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13063 states to 13063 states and 19889 transitions. [2020-12-22 08:09:05,005 INFO L78 Accepts]: Start accepts. Automaton has 13063 states and 19889 transitions. Word has length 242 [2020-12-22 08:09:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:05,006 INFO L481 AbstractCegarLoop]: Abstraction has 13063 states and 19889 transitions. [2020-12-22 08:09:05,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:09:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 13063 states and 19889 transitions. [2020-12-22 08:09:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 08:09:05,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:05,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:05,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:09:05,033 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:05,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:05,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1986050080, now seen corresponding path program 1 times [2020-12-22 08:09:05,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:05,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529703851] [2020-12-22 08:09:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:05,512 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 08:09:05,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529703851] [2020-12-22 08:09:05,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:05,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:09:05,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570307506] [2020-12-22 08:09:05,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:09:05,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:05,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:09:05,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:09:05,515 INFO L87 Difference]: Start difference. First operand 13063 states and 19889 transitions. Second operand 4 states. [2020-12-22 08:09:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:07,138 INFO L93 Difference]: Finished difference Result 38371 states and 58335 transitions. [2020-12-22 08:09:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:09:07,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2020-12-22 08:09:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:07,201 INFO L225 Difference]: With dead ends: 38371 [2020-12-22 08:09:07,201 INFO L226 Difference]: Without dead ends: 25505 [2020-12-22 08:09:07,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:09:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25505 states. [2020-12-22 08:09:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25505 to 25503. [2020-12-22 08:09:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25503 states. [2020-12-22 08:09:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25503 states to 25503 states and 38528 transitions. [2020-12-22 08:09:09,063 INFO L78 Accepts]: Start accepts. Automaton has 25503 states and 38528 transitions. Word has length 244 [2020-12-22 08:09:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:09,063 INFO L481 AbstractCegarLoop]: Abstraction has 25503 states and 38528 transitions. [2020-12-22 08:09:09,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:09:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 25503 states and 38528 transitions. [2020-12-22 08:09:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-22 08:09:09,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:09,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:09,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:09:09,108 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:09,109 INFO L82 PathProgramCache]: Analyzing trace with hash -624008932, now seen corresponding path program 1 times [2020-12-22 08:09:09,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:09,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162224719] [2020-12-22 08:09:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:09,202 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 08:09:09,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162224719] [2020-12-22 08:09:09,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:09,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:09,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518443269] [2020-12-22 08:09:09,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:09,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:09,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:09,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:09,210 INFO L87 Difference]: Start difference. First operand 25503 states and 38528 transitions. Second operand 3 states. [2020-12-22 08:09:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:11,502 INFO L93 Difference]: Finished difference Result 75989 states and 114748 transitions. [2020-12-22 08:09:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:11,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-12-22 08:09:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:11,627 INFO L225 Difference]: With dead ends: 75989 [2020-12-22 08:09:11,627 INFO L226 Difference]: Without dead ends: 50771 [2020-12-22 08:09:11,681 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 08:09:11,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50771 states. [2020-12-22 08:09:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50771 to 25633. [2020-12-22 08:09:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25633 states. [2020-12-22 08:09:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25633 states to 25633 states and 38718 transitions. [2020-12-22 08:09:13,182 INFO L78 Accepts]: Start accepts. Automaton has 25633 states and 38718 transitions. Word has length 246 [2020-12-22 08:09:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:13,183 INFO L481 AbstractCegarLoop]: Abstraction has 25633 states and 38718 transitions. [2020-12-22 08:09:13,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25633 states and 38718 transitions. [2020-12-22 08:09:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-22 08:09:13,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:13,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:13,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:09:13,218 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1492872855, now seen corresponding path program 1 times [2020-12-22 08:09:13,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:13,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214354279] [2020-12-22 08:09:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:13,400 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 08:09:13,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214354279] [2020-12-22 08:09:13,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:13,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:13,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473315245] [2020-12-22 08:09:13,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:13,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:13,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:13,402 INFO L87 Difference]: Start difference. First operand 25633 states and 38718 transitions. Second operand 3 states. [2020-12-22 08:09:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:16,058 INFO L93 Difference]: Finished difference Result 74771 states and 112664 transitions. [2020-12-22 08:09:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:16,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-12-22 08:09:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:16,155 INFO L225 Difference]: With dead ends: 74771 [2020-12-22 08:09:16,155 INFO L226 Difference]: Without dead ends: 50161 [2020-12-22 08:09:16,195 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 08:09:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50161 states. [2020-12-22 08:09:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50161 to 50159. [2020-12-22 08:09:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50159 states. [2020-12-22 08:09:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50159 states to 50159 states and 75242 transitions. [2020-12-22 08:09:19,243 INFO L78 Accepts]: Start accepts. Automaton has 50159 states and 75242 transitions. Word has length 246 [2020-12-22 08:09:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:19,243 INFO L481 AbstractCegarLoop]: Abstraction has 50159 states and 75242 transitions. [2020-12-22 08:09:19,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 50159 states and 75242 transitions. [2020-12-22 08:09:19,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-12-22 08:09:19,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:19,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:19,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:09:19,280 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:19,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1918851591, now seen corresponding path program 1 times [2020-12-22 08:09:19,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:19,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891998551] [2020-12-22 08:09:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:19,372 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 08:09:19,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891998551] [2020-12-22 08:09:19,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:19,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:19,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886595754] [2020-12-22 08:09:19,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:19,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:19,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:19,374 INFO L87 Difference]: Start difference. First operand 50159 states and 75242 transitions. Second operand 3 states. [2020-12-22 08:09:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:24,451 INFO L93 Difference]: Finished difference Result 149223 states and 223658 transitions. [2020-12-22 08:09:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:24,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2020-12-22 08:09:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:24,596 INFO L225 Difference]: With dead ends: 149223 [2020-12-22 08:09:24,596 INFO L226 Difference]: Without dead ends: 99747 [2020-12-22 08:09:24,650 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 08:09:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99747 states. [2020-12-22 08:09:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99747 to 50321. [2020-12-22 08:09:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50321 states. [2020-12-22 08:09:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50321 states to 50321 states and 75428 transitions. [2020-12-22 08:09:28,198 INFO L78 Accepts]: Start accepts. Automaton has 50321 states and 75428 transitions. Word has length 247 [2020-12-22 08:09:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:28,199 INFO L481 AbstractCegarLoop]: Abstraction has 50321 states and 75428 transitions. [2020-12-22 08:09:28,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 50321 states and 75428 transitions. [2020-12-22 08:09:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-12-22 08:09:28,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:28,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:28,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:09:28,242 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:28,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1870732530, now seen corresponding path program 1 times [2020-12-22 08:09:28,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:28,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719861683] [2020-12-22 08:09:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:28,543 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 08:09:28,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719861683] [2020-12-22 08:09:28,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:28,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:09:28,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577767313] [2020-12-22 08:09:28,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:09:28,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:28,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:09:28,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:28,546 INFO L87 Difference]: Start difference. First operand 50321 states and 75428 transitions. Second operand 3 states. [2020-12-22 08:09:33,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:33,368 INFO L93 Difference]: Finished difference Result 142979 states and 213818 transitions. [2020-12-22 08:09:33,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:33,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2020-12-22 08:09:33,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:33,515 INFO L225 Difference]: With dead ends: 142979 [2020-12-22 08:09:33,515 INFO L226 Difference]: Without dead ends: 94201 [2020-12-22 08:09:33,556 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 08:09:33,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94201 states. [2020-12-22 08:09:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94201 to 94199. [2020-12-22 08:09:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94199 states. [2020-12-22 08:09:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94199 states to 94199 states and 140046 transitions. [2020-12-22 08:09:39,607 INFO L78 Accepts]: Start accepts. Automaton has 94199 states and 140046 transitions. Word has length 248 [2020-12-22 08:09:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:39,608 INFO L481 AbstractCegarLoop]: Abstraction has 94199 states and 140046 transitions. [2020-12-22 08:09:39,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 94199 states and 140046 transitions. [2020-12-22 08:09:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-12-22 08:09:39,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:39,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:09:39,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:09:39,688 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:39,689 INFO L82 PathProgramCache]: Analyzing trace with hash 278969039, now seen corresponding path program 1 times [2020-12-22 08:09:39,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:39,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768421400] [2020-12-22 08:09:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:40,339 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 08:09:40,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768421400] [2020-12-22 08:09:40,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:40,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:09:40,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950176949] [2020-12-22 08:09:40,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:09:40,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:40,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:09:40,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:09:40,342 INFO L87 Difference]: Start difference. First operand 94199 states and 140046 transitions. Second operand 5 states. [2020-12-22 08:09:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:50,788 INFO L93 Difference]: Finished difference Result 276565 states and 410408 transitions. [2020-12-22 08:09:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:09:50,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-12-22 08:09:50,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:51,050 INFO L225 Difference]: With dead ends: 276565 [2020-12-22 08:09:51,050 INFO L226 Difference]: Without dead ends: 182985 [2020-12-22 08:09:51,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:09:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182985 states. [2020-12-22 08:10:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182985 to 182983. [2020-12-22 08:10:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182983 states. [2020-12-22 08:10:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182983 states to 182983 states and 269546 transitions. [2020-12-22 08:10:03,399 INFO L78 Accepts]: Start accepts. Automaton has 182983 states and 269546 transitions. Word has length 248 [2020-12-22 08:10:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:03,400 INFO L481 AbstractCegarLoop]: Abstraction has 182983 states and 269546 transitions. [2020-12-22 08:10:03,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:10:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 182983 states and 269546 transitions. [2020-12-22 08:10:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-12-22 08:10:03,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:03,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:10:03,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:10:03,564 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash 493405284, now seen corresponding path program 1 times [2020-12-22 08:10:03,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:03,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643238678] [2020-12-22 08:10:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:03,769 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 08:10:03,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643238678] [2020-12-22 08:10:03,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:03,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:10:03,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45212479] [2020-12-22 08:10:03,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:10:03,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:03,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:10:03,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:10:03,772 INFO L87 Difference]: Start difference. First operand 182983 states and 269546 transitions. Second operand 3 states. [2020-12-22 08:10:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:10:24,793 INFO L93 Difference]: Finished difference Result 533565 states and 783522 transitions. [2020-12-22 08:10:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:10:24,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2020-12-22 08:10:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:10:25,554 INFO L225 Difference]: With dead ends: 533565 [2020-12-22 08:10:25,554 INFO L226 Difference]: Without dead ends: 357091 [2020-12-22 08:10:25,781 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 08:10:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357091 states. [2020-12-22 08:10:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357091 to 357089. [2020-12-22 08:10:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357089 states. [2020-12-22 08:10:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357089 states to 357089 states and 521552 transitions. [2020-12-22 08:10:50,021 INFO L78 Accepts]: Start accepts. Automaton has 357089 states and 521552 transitions. Word has length 250 [2020-12-22 08:10:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:50,022 INFO L481 AbstractCegarLoop]: Abstraction has 357089 states and 521552 transitions. [2020-12-22 08:10:50,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:10:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 357089 states and 521552 transitions. [2020-12-22 08:10:50,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-12-22 08:10:50,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:50,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:10:50,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:10:50,907 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:50,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:50,907 INFO L82 PathProgramCache]: Analyzing trace with hash 782251393, now seen corresponding path program 1 times [2020-12-22 08:10:50,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:50,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708656707] [2020-12-22 08:10:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:51,314 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 08:10:51,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708656707] [2020-12-22 08:10:51,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:51,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:10:51,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072873475] [2020-12-22 08:10:51,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:10:51,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:51,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:10:51,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:10:51,318 INFO L87 Difference]: Start difference. First operand 357089 states and 521552 transitions. Second operand 5 states.