/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/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:45:40,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:45:40,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:45:40,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:45:40,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:45:40,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:45:40,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:45:40,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:45:40,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:45:40,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:45:40,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:45:40,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:45:40,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:45:40,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:45:40,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:45:40,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:45:40,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:45:40,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:45:40,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:45:40,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:45:40,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:45:40,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:45:40,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:45:40,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:45:40,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 07:45:40,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 07:45:40,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 07:45:40,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 07:45:40,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 07:45:40,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 07:45:40,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:45:40,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:45:40,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:45:40,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:45:40,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:45:40,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:45:40,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:45:40,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:45:40,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:45:40,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:45:40,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:45:40,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:45:40,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:45:40,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:45:40,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:45:40,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:45:40,838 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:45:40,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:45:40,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:45:40,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:45:40,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:45:40,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:45:40,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:45:40,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:45:40,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:45:40,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:45:40,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:45:40,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:45:40,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:45:40,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:45:40,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:45:40,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:45:40,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:45:40,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:45:40,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:45:40,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:45:40,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:45:40,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:45:41,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:45:41,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:45:41,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:45:41,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:45:41,335 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:45:41,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c [2020-12-22 07:45:41,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/833198410/23f1b034256c40f380d93e877f82e274/FLAGa763aecb6 [2020-12-22 07:45:42,224 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:45:42,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c [2020-12-22 07:45:42,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/833198410/23f1b034256c40f380d93e877f82e274/FLAGa763aecb6 [2020-12-22 07:45:42,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/833198410/23f1b034256c40f380d93e877f82e274 [2020-12-22 07:45:42,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:45:42,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:45:42,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:45:42,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:45:42,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:45:42,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:45:42" (1/1) ... [2020-12-22 07:45:42,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d3fd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:42, skipping insertion in model container [2020-12-22 07:45:42,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:45:42" (1/1) ... [2020-12-22 07:45:42,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:45:42,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:45:43,274 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/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c[65471,65484] [2020-12-22 07:45:43,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:45:43,292 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:45:43,532 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/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c[65471,65484] [2020-12-22 07:45:43,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:45:43,566 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:45:43,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43 WrapperNode [2020-12-22 07:45:43,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:45:43,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:45:43,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:45:43,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:45:43,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:45:43,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:45:43,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:45:43,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:45:43,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (1/1) ... [2020-12-22 07:45:43,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:45:43,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:45:43,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:45:43,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:45:43,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (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 07:45:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:45:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:45:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:45:44,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:45:46,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:45:46,533 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:45:46,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:45:46 BoogieIcfgContainer [2020-12-22 07:45:46,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:45:46,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:45:46,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:45:46,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:45:46,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:45:42" (1/3) ... [2020-12-22 07:45:46,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7276ea83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:45:46, skipping insertion in model container [2020-12-22 07:45:46,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:43" (2/3) ... [2020-12-22 07:45:46,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7276ea83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:45:46, skipping insertion in model container [2020-12-22 07:45:46,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:45:46" (3/3) ... [2020-12-22 07:45:46,553 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c [2020-12-22 07:45:46,560 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:45:46,567 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:45:46,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:45:46,642 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:45:46,643 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:45:46,643 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:45:46,643 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:45:46,643 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:45:46,643 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:45:46,643 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:45:46,644 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:45:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states. [2020-12-22 07:45:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:45:46,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:46,723 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] [2020-12-22 07:45:46,723 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:46,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:46,732 INFO L82 PathProgramCache]: Analyzing trace with hash -388227635, now seen corresponding path program 1 times [2020-12-22 07:45:46,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:46,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450405767] [2020-12-22 07:45:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:47,423 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 07:45:47,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450405767] [2020-12-22 07:45:47,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:47,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:45:47,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788303284] [2020-12-22 07:45:47,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:45:47,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:47,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:45:47,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:45:47,450 INFO L87 Difference]: Start difference. First operand 736 states. Second operand 2 states. [2020-12-22 07:45:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:47,517 INFO L93 Difference]: Finished difference Result 922 states and 1680 transitions. [2020-12-22 07:45:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:45:47,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 153 [2020-12-22 07:45:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:47,550 INFO L225 Difference]: With dead ends: 922 [2020-12-22 07:45:47,550 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 07:45:47,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:45:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 07:45:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 07:45:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 07:45:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1351 transitions. [2020-12-22 07:45:47,696 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1351 transitions. Word has length 153 [2020-12-22 07:45:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:47,697 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 1351 transitions. [2020-12-22 07:45:47,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:45:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1351 transitions. [2020-12-22 07:45:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:45:47,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:47,702 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] [2020-12-22 07:45:47,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:45:47,702 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:47,703 INFO L82 PathProgramCache]: Analyzing trace with hash -897700725, now seen corresponding path program 1 times [2020-12-22 07:45:47,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:47,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137129309] [2020-12-22 07:45:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:48,023 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 07:45:48,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137129309] [2020-12-22 07:45:48,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:48,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:45:48,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975585722] [2020-12-22 07:45:48,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:45:48,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:48,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:45:48,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:45:48,030 INFO L87 Difference]: Start difference. First operand 732 states and 1351 transitions. Second operand 5 states. [2020-12-22 07:45:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:48,263 INFO L93 Difference]: Finished difference Result 917 states and 1670 transitions. [2020-12-22 07:45:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:45:48,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 07:45:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:48,277 INFO L225 Difference]: With dead ends: 917 [2020-12-22 07:45:48,277 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 07:45:48,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:45:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 07:45:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 07:45:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 07:45:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1286 transitions. [2020-12-22 07:45:48,365 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1286 transitions. Word has length 153 [2020-12-22 07:45:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:48,366 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 1286 transitions. [2020-12-22 07:45:48,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:45:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1286 transitions. [2020-12-22 07:45:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 07:45:48,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:48,370 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] [2020-12-22 07:45:48,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:45:48,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:48,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1598055145, now seen corresponding path program 1 times [2020-12-22 07:45:48,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:48,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995910440] [2020-12-22 07:45:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:48,744 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 07:45:48,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995910440] [2020-12-22 07:45:48,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:48,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:48,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038411339] [2020-12-22 07:45:48,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:48,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:48,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:48,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:48,755 INFO L87 Difference]: Start difference. First operand 732 states and 1286 transitions. Second operand 3 states. [2020-12-22 07:45:48,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:48,848 INFO L93 Difference]: Finished difference Result 1080 states and 1890 transitions. [2020-12-22 07:45:48,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:48,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 07:45:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:48,860 INFO L225 Difference]: With dead ends: 1080 [2020-12-22 07:45:48,860 INFO L226 Difference]: Without dead ends: 899 [2020-12-22 07:45:48,863 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 07:45:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-12-22 07:45:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2020-12-22 07:45:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-12-22 07:45:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1569 transitions. [2020-12-22 07:45:48,908 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1569 transitions. Word has length 217 [2020-12-22 07:45:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:48,918 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1569 transitions. [2020-12-22 07:45:48,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1569 transitions. [2020-12-22 07:45:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 07:45:48,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:48,925 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] [2020-12-22 07:45:48,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:45:48,925 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:48,926 INFO L82 PathProgramCache]: Analyzing trace with hash 741252945, now seen corresponding path program 1 times [2020-12-22 07:45:48,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:48,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899137926] [2020-12-22 07:45:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:49,261 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 07:45:49,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899137926] [2020-12-22 07:45:49,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:49,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:49,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577011752] [2020-12-22 07:45:49,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:49,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:49,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:49,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:49,267 INFO L87 Difference]: Start difference. First operand 897 states and 1569 transitions. Second operand 3 states. [2020-12-22 07:45:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:49,341 INFO L93 Difference]: Finished difference Result 1565 states and 2721 transitions. [2020-12-22 07:45:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:49,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-22 07:45:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:49,354 INFO L225 Difference]: With dead ends: 1565 [2020-12-22 07:45:49,354 INFO L226 Difference]: Without dead ends: 1219 [2020-12-22 07:45:49,356 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 07:45:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-22 07:45:49,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1217. [2020-12-22 07:45:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-12-22 07:45:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2120 transitions. [2020-12-22 07:45:49,420 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2120 transitions. Word has length 221 [2020-12-22 07:45:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:49,421 INFO L481 AbstractCegarLoop]: Abstraction has 1217 states and 2120 transitions. [2020-12-22 07:45:49,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2120 transitions. [2020-12-22 07:45:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 07:45:49,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:49,427 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] [2020-12-22 07:45:49,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:45:49,428 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:49,428 INFO L82 PathProgramCache]: Analyzing trace with hash -674300039, now seen corresponding path program 1 times [2020-12-22 07:45:49,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:49,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272435450] [2020-12-22 07:45:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:49,756 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 07:45:49,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272435450] [2020-12-22 07:45:49,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:49,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:49,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921183318] [2020-12-22 07:45:49,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:49,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:49,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:49,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:49,760 INFO L87 Difference]: Start difference. First operand 1217 states and 2120 transitions. Second operand 3 states. [2020-12-22 07:45:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:49,851 INFO L93 Difference]: Finished difference Result 2501 states and 4330 transitions. [2020-12-22 07:45:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:49,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-22 07:45:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:49,866 INFO L225 Difference]: With dead ends: 2501 [2020-12-22 07:45:49,866 INFO L226 Difference]: Without dead ends: 1835 [2020-12-22 07:45:49,868 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 07:45:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-12-22 07:45:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1833. [2020-12-22 07:45:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-12-22 07:45:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 3176 transitions. [2020-12-22 07:45:49,936 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 3176 transitions. Word has length 225 [2020-12-22 07:45:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:49,936 INFO L481 AbstractCegarLoop]: Abstraction has 1833 states and 3176 transitions. [2020-12-22 07:45:49,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 3176 transitions. [2020-12-22 07:45:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 07:45:49,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:49,943 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] [2020-12-22 07:45:49,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:45:49,944 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1433109345, now seen corresponding path program 1 times [2020-12-22 07:45:49,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:49,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311493422] [2020-12-22 07:45:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:50,198 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 07:45:50,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311493422] [2020-12-22 07:45:50,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:50,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:50,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288546266] [2020-12-22 07:45:50,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:50,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:50,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:50,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:50,200 INFO L87 Difference]: Start difference. First operand 1833 states and 3176 transitions. Second operand 3 states. [2020-12-22 07:45:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:50,297 INFO L93 Difference]: Finished difference Result 4301 states and 7410 transitions. [2020-12-22 07:45:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:50,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 07:45:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:50,315 INFO L225 Difference]: With dead ends: 4301 [2020-12-22 07:45:50,316 INFO L226 Difference]: Without dead ends: 3019 [2020-12-22 07:45:50,318 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 07:45:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2020-12-22 07:45:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 3017. [2020-12-22 07:45:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3017 states. [2020-12-22 07:45:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5196 transitions. [2020-12-22 07:45:50,417 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5196 transitions. Word has length 229 [2020-12-22 07:45:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:50,417 INFO L481 AbstractCegarLoop]: Abstraction has 3017 states and 5196 transitions. [2020-12-22 07:45:50,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5196 transitions. [2020-12-22 07:45:50,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 07:45:50,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:50,426 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] [2020-12-22 07:45:50,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:45:50,426 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:50,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:50,427 INFO L82 PathProgramCache]: Analyzing trace with hash 792603401, now seen corresponding path program 1 times [2020-12-22 07:45:50,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:50,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005997031] [2020-12-22 07:45:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:50,693 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 07:45:50,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005997031] [2020-12-22 07:45:50,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:50,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:50,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259015480] [2020-12-22 07:45:50,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:50,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:50,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:50,697 INFO L87 Difference]: Start difference. First operand 3017 states and 5196 transitions. Second operand 3 states. [2020-12-22 07:45:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:50,816 INFO L93 Difference]: Finished difference Result 7757 states and 13294 transitions. [2020-12-22 07:45:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:50,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-22 07:45:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:50,851 INFO L225 Difference]: With dead ends: 7757 [2020-12-22 07:45:50,851 INFO L226 Difference]: Without dead ends: 5291 [2020-12-22 07:45:50,858 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 07:45:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2020-12-22 07:45:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 5289. [2020-12-22 07:45:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2020-12-22 07:45:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 9052 transitions. [2020-12-22 07:45:51,053 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 9052 transitions. Word has length 233 [2020-12-22 07:45:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:51,053 INFO L481 AbstractCegarLoop]: Abstraction has 5289 states and 9052 transitions. [2020-12-22 07:45:51,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 9052 transitions. [2020-12-22 07:45:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 07:45:51,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:51,061 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] [2020-12-22 07:45:51,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:45:51,061 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash 108066417, now seen corresponding path program 1 times [2020-12-22 07:45:51,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:51,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985267009] [2020-12-22 07:45:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:51,464 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 07:45:51,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985267009] [2020-12-22 07:45:51,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:51,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:45:51,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537390106] [2020-12-22 07:45:51,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:45:51,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:51,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:45:51,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:45:51,467 INFO L87 Difference]: Start difference. First operand 5289 states and 9052 transitions. Second operand 7 states. [2020-12-22 07:45:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:52,452 INFO L93 Difference]: Finished difference Result 29643 states and 50837 transitions. [2020-12-22 07:45:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:45:52,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-12-22 07:45:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:52,555 INFO L225 Difference]: With dead ends: 29643 [2020-12-22 07:45:52,555 INFO L226 Difference]: Without dead ends: 24905 [2020-12-22 07:45:52,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:45:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24905 states. [2020-12-22 07:45:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24905 to 12197. [2020-12-22 07:45:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12197 states. [2020-12-22 07:45:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 20884 transitions. [2020-12-22 07:45:53,164 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 20884 transitions. Word has length 237 [2020-12-22 07:45:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:53,165 INFO L481 AbstractCegarLoop]: Abstraction has 12197 states and 20884 transitions. [2020-12-22 07:45:53,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:45:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 20884 transitions. [2020-12-22 07:45:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 07:45:53,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:53,183 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 07:45:53,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:45:53,183 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:53,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1083679653, now seen corresponding path program 1 times [2020-12-22 07:45:53,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:53,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679904062] [2020-12-22 07:45:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:53,554 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 07:45:53,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679904062] [2020-12-22 07:45:53,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:53,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:53,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834722462] [2020-12-22 07:45:53,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:53,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:53,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:53,557 INFO L87 Difference]: Start difference. First operand 12197 states and 20884 transitions. Second operand 4 states. [2020-12-22 07:45:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:53,926 INFO L93 Difference]: Finished difference Result 28676 states and 49121 transitions. [2020-12-22 07:45:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:53,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-12-22 07:45:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:53,975 INFO L225 Difference]: With dead ends: 28676 [2020-12-22 07:45:53,976 INFO L226 Difference]: Without dead ends: 17030 [2020-12-22 07:45:54,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:54,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17030 states. [2020-12-22 07:45:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17030 to 16995. [2020-12-22 07:45:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16995 states. [2020-12-22 07:45:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16995 states to 16995 states and 29082 transitions. [2020-12-22 07:45:54,605 INFO L78 Accepts]: Start accepts. Automaton has 16995 states and 29082 transitions. Word has length 238 [2020-12-22 07:45:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:54,605 INFO L481 AbstractCegarLoop]: Abstraction has 16995 states and 29082 transitions. [2020-12-22 07:45:54,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 16995 states and 29082 transitions. [2020-12-22 07:45:54,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:54,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:54,620 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] [2020-12-22 07:45:54,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:45:54,620 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash 786829641, now seen corresponding path program 1 times [2020-12-22 07:45:54,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:54,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3254351] [2020-12-22 07:45:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:54,937 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 07:45:54,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3254351] [2020-12-22 07:45:54,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:54,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:54,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014759134] [2020-12-22 07:45:54,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:54,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:54,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:54,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:54,940 INFO L87 Difference]: Start difference. First operand 16995 states and 29082 transitions. Second operand 3 states. [2020-12-22 07:45:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:55,375 INFO L93 Difference]: Finished difference Result 38906 states and 66693 transitions. [2020-12-22 07:45:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:55,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:55,447 INFO L225 Difference]: With dead ends: 38906 [2020-12-22 07:45:55,447 INFO L226 Difference]: Without dead ends: 26797 [2020-12-22 07:45:55,471 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 07:45:55,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26797 states. [2020-12-22 07:45:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26797 to 26795. [2020-12-22 07:45:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26795 states. [2020-12-22 07:45:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26795 states to 26795 states and 45773 transitions. [2020-12-22 07:45:56,511 INFO L78 Accepts]: Start accepts. Automaton has 26795 states and 45773 transitions. Word has length 239 [2020-12-22 07:45:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:56,512 INFO L481 AbstractCegarLoop]: Abstraction has 26795 states and 45773 transitions. [2020-12-22 07:45:56,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 26795 states and 45773 transitions. [2020-12-22 07:45:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:56,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:56,519 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] [2020-12-22 07:45:56,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:45:56,520 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:56,520 INFO L82 PathProgramCache]: Analyzing trace with hash -259310295, now seen corresponding path program 1 times [2020-12-22 07:45:56,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:56,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243679538] [2020-12-22 07:45:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:56,815 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 07:45:56,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243679538] [2020-12-22 07:45:56,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:56,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:56,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18995580] [2020-12-22 07:45:56,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:56,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:56,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:56,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:56,819 INFO L87 Difference]: Start difference. First operand 26795 states and 45773 transitions. Second operand 3 states. [2020-12-22 07:45:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:57,517 INFO L93 Difference]: Finished difference Result 51907 states and 88688 transitions. [2020-12-22 07:45:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:57,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:57,627 INFO L225 Difference]: With dead ends: 51907 [2020-12-22 07:45:57,628 INFO L226 Difference]: Without dead ends: 37921 [2020-12-22 07:45:57,652 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 07:45:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37921 states. [2020-12-22 07:45:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37921 to 37919. [2020-12-22 07:45:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37919 states. [2020-12-22 07:45:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37919 states to 37919 states and 64605 transitions. [2020-12-22 07:45:58,771 INFO L78 Accepts]: Start accepts. Automaton has 37919 states and 64605 transitions. Word has length 239 [2020-12-22 07:45:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:58,772 INFO L481 AbstractCegarLoop]: Abstraction has 37919 states and 64605 transitions. [2020-12-22 07:45:58,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand 37919 states and 64605 transitions. [2020-12-22 07:45:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:58,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:58,777 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] [2020-12-22 07:45:58,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:45:58,778 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:58,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1955219721, now seen corresponding path program 1 times [2020-12-22 07:45:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:58,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488189856] [2020-12-22 07:45:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:59,107 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 07:45:59,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488189856] [2020-12-22 07:45:59,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:59,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:59,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695168751] [2020-12-22 07:45:59,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:59,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:59,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:59,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:59,110 INFO L87 Difference]: Start difference. First operand 37919 states and 64605 transitions. Second operand 3 states. [2020-12-22 07:45:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:59,981 INFO L93 Difference]: Finished difference Result 73271 states and 124880 transitions. [2020-12-22 07:45:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:59,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:00,105 INFO L225 Difference]: With dead ends: 73271 [2020-12-22 07:46:00,105 INFO L226 Difference]: Without dead ends: 53445 [2020-12-22 07:46:00,273 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 07:46:00,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53445 states. [2020-12-22 07:46:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53445 to 53443. [2020-12-22 07:46:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53443 states. [2020-12-22 07:46:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53443 states to 53443 states and 90797 transitions. [2020-12-22 07:46:01,923 INFO L78 Accepts]: Start accepts. Automaton has 53443 states and 90797 transitions. Word has length 239 [2020-12-22 07:46:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:01,923 INFO L481 AbstractCegarLoop]: Abstraction has 53443 states and 90797 transitions. [2020-12-22 07:46:01,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 53443 states and 90797 transitions. [2020-12-22 07:46:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:01,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:01,936 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] [2020-12-22 07:46:01,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:46:01,937 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:01,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:01,938 INFO L82 PathProgramCache]: Analyzing trace with hash 583218409, now seen corresponding path program 1 times [2020-12-22 07:46:01,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:01,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365686534] [2020-12-22 07:46:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:02,146 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 07:46:02,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365686534] [2020-12-22 07:46:02,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:02,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:02,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663033864] [2020-12-22 07:46:02,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:02,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:02,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:02,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:02,149 INFO L87 Difference]: Start difference. First operand 53443 states and 90797 transitions. Second operand 3 states. [2020-12-22 07:46:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:03,287 INFO L93 Difference]: Finished difference Result 103003 states and 175072 transitions. [2020-12-22 07:46:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:03,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:46:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:03,419 INFO L225 Difference]: With dead ends: 103003 [2020-12-22 07:46:03,419 INFO L226 Difference]: Without dead ends: 74993 [2020-12-22 07:46:03,454 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 07:46:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74993 states. [2020-12-22 07:46:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74993 to 74991. [2020-12-22 07:46:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74991 states. [2020-12-22 07:46:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74991 states to 74991 states and 127009 transitions. [2020-12-22 07:46:05,323 INFO L78 Accepts]: Start accepts. Automaton has 74991 states and 127009 transitions. Word has length 239 [2020-12-22 07:46:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:05,324 INFO L481 AbstractCegarLoop]: Abstraction has 74991 states and 127009 transitions. [2020-12-22 07:46:05,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 74991 states and 127009 transitions. [2020-12-22 07:46:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:05,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:05,593 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] [2020-12-22 07:46:05,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:46:05,593 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1125515465, now seen corresponding path program 1 times [2020-12-22 07:46:05,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:05,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899823286] [2020-12-22 07:46:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:05,869 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 07:46:05,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899823286] [2020-12-22 07:46:05,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:05,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:46:05,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962424601] [2020-12-22 07:46:05,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:46:05,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:05,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:46:05,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:46:05,872 INFO L87 Difference]: Start difference. First operand 74991 states and 127009 transitions. Second operand 3 states. [2020-12-22 07:46:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:07,135 INFO L93 Difference]: Finished difference Result 144135 states and 244224 transitions. [2020-12-22 07:46:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:46:07,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:46:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:07,318 INFO L225 Difference]: With dead ends: 144135 [2020-12-22 07:46:07,318 INFO L226 Difference]: Without dead ends: 104713 [2020-12-22 07:46:07,375 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 07:46:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104713 states. [2020-12-22 07:46:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104713 to 104711. [2020-12-22 07:46:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104711 states. [2020-12-22 07:46:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104711 states to 104711 states and 176721 transitions. [2020-12-22 07:46:09,867 INFO L78 Accepts]: Start accepts. Automaton has 104711 states and 176721 transitions. Word has length 239 [2020-12-22 07:46:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:09,867 INFO L481 AbstractCegarLoop]: Abstraction has 104711 states and 176721 transitions. [2020-12-22 07:46:09,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:46:09,867 INFO L276 IsEmpty]: Start isEmpty. Operand 104711 states and 176721 transitions. [2020-12-22 07:46:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:46:09,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:09,871 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] [2020-12-22 07:46:09,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:46:09,871 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1431923240, now seen corresponding path program 1 times [2020-12-22 07:46:09,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:09,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275568683] [2020-12-22 07:46:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:10,421 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 07:46:10,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275568683] [2020-12-22 07:46:10,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:10,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:10,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596480619] [2020-12-22 07:46:10,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:10,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:10,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:10,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:10,424 INFO L87 Difference]: Start difference. First operand 104711 states and 176721 transitions. Second operand 4 states. [2020-12-22 07:46:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:13,804 INFO L93 Difference]: Finished difference Result 345911 states and 584173 transitions. [2020-12-22 07:46:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:13,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-12-22 07:46:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:14,533 INFO L225 Difference]: With dead ends: 345911 [2020-12-22 07:46:14,534 INFO L226 Difference]: Without dead ends: 241833 [2020-12-22 07:46:14,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241833 states. [2020-12-22 07:46:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241833 to 172390. [2020-12-22 07:46:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172390 states. [2020-12-22 07:46:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172390 states to 172390 states and 290100 transitions. [2020-12-22 07:46:19,313 INFO L78 Accepts]: Start accepts. Automaton has 172390 states and 290100 transitions. Word has length 239 [2020-12-22 07:46:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:19,314 INFO L481 AbstractCegarLoop]: Abstraction has 172390 states and 290100 transitions. [2020-12-22 07:46:19,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 172390 states and 290100 transitions. [2020-12-22 07:46:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 07:46:19,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:19,316 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 07:46:19,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:46:19,317 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:19,317 INFO L82 PathProgramCache]: Analyzing trace with hash -488423108, now seen corresponding path program 1 times [2020-12-22 07:46:19,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:19,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919905324] [2020-12-22 07:46:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:19,550 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 07:46:19,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919905324] [2020-12-22 07:46:19,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:19,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:19,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310847807] [2020-12-22 07:46:19,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:19,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:19,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:19,556 INFO L87 Difference]: Start difference. First operand 172390 states and 290100 transitions. Second operand 4 states. [2020-12-22 07:46:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:25,549 INFO L93 Difference]: Finished difference Result 569959 states and 959793 transitions. [2020-12-22 07:46:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:25,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 07:46:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:26,748 INFO L225 Difference]: With dead ends: 569959 [2020-12-22 07:46:26,749 INFO L226 Difference]: Without dead ends: 398202 [2020-12-22 07:46:26,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398202 states. [2020-12-22 07:46:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398202 to 283121. [2020-12-22 07:46:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283121 states. [2020-12-22 07:46:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283121 states to 283121 states and 475063 transitions. [2020-12-22 07:46:34,748 INFO L78 Accepts]: Start accepts. Automaton has 283121 states and 475063 transitions. Word has length 240 [2020-12-22 07:46:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:34,749 INFO L481 AbstractCegarLoop]: Abstraction has 283121 states and 475063 transitions. [2020-12-22 07:46:34,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 283121 states and 475063 transitions. [2020-12-22 07:46:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:46:34,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:34,751 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 07:46:34,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:46:34,751 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash 279386591, now seen corresponding path program 1 times [2020-12-22 07:46:34,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:34,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389455892] [2020-12-22 07:46:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:35,423 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 07:46:35,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389455892] [2020-12-22 07:46:35,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:35,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:35,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515222373] [2020-12-22 07:46:35,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:35,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:35,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:35,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:35,427 INFO L87 Difference]: Start difference. First operand 283121 states and 475063 transitions. Second operand 4 states. [2020-12-22 07:46:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:45,712 INFO L93 Difference]: Finished difference Result 935615 states and 1571029 transitions. [2020-12-22 07:46:45,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:45,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-12-22 07:46:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:47,623 INFO L225 Difference]: With dead ends: 935615 [2020-12-22 07:46:47,623 INFO L226 Difference]: Without dead ends: 653127 [2020-12-22 07:46:47,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653127 states. [2020-12-22 07:47:03,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653127 to 462428. [2020-12-22 07:47:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462428 states. [2020-12-22 07:47:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462428 states to 462428 states and 773710 transitions. [2020-12-22 07:47:07,207 INFO L78 Accepts]: Start accepts. Automaton has 462428 states and 773710 transitions. Word has length 241 [2020-12-22 07:47:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:07,208 INFO L481 AbstractCegarLoop]: Abstraction has 462428 states and 773710 transitions. [2020-12-22 07:47:07,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:47:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 462428 states and 773710 transitions. [2020-12-22 07:47:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 07:47:07,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:07,216 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 07:47:07,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:47:07,217 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:07,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1519312173, now seen corresponding path program 1 times [2020-12-22 07:47:07,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:07,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790106315] [2020-12-22 07:47:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:07,660 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 07:47:07,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790106315] [2020-12-22 07:47:07,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:07,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:47:07,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730947974] [2020-12-22 07:47:07,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:47:07,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:07,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:47:07,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:47:07,672 INFO L87 Difference]: Start difference. First operand 462428 states and 773710 transitions. Second operand 4 states. [2020-12-22 07:47:26,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:47:26,522 INFO L93 Difference]: Finished difference Result 1496619 states and 2506113 transitions. [2020-12-22 07:47:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:47:26,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-12-22 07:47:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:47:29,334 INFO L225 Difference]: With dead ends: 1496619 [2020-12-22 07:47:29,335 INFO L226 Difference]: Without dead ends: 1034824 [2020-12-22 07:47:30,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:47:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034824 states. [2020-12-22 07:47:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034824 to 747259. [2020-12-22 07:47:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747259 states. [2020-12-22 07:48:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747259 states to 747259 states and 1246781 transitions. [2020-12-22 07:48:00,035 INFO L78 Accepts]: Start accepts. Automaton has 747259 states and 1246781 transitions. Word has length 242 [2020-12-22 07:48:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:48:00,036 INFO L481 AbstractCegarLoop]: Abstraction has 747259 states and 1246781 transitions. [2020-12-22 07:48:00,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:48:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 747259 states and 1246781 transitions. [2020-12-22 07:48:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 07:48:00,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:48:00,053 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 07:48:00,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:48:00,053 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:48:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:48:00,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2074853333, now seen corresponding path program 1 times [2020-12-22 07:48:00,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:48:00,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075195794] [2020-12-22 07:48:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:48:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:48:02,203 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 07:48:02,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075195794] [2020-12-22 07:48:02,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:48:02,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:48:02,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367627560] [2020-12-22 07:48:02,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:48:02,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:48:02,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:48:02,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:48:02,210 INFO L87 Difference]: Start difference. First operand 747259 states and 1246781 transitions. Second operand 7 states. [2020-12-22 07:48:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:48:25,262 INFO L93 Difference]: Finished difference Result 1493889 states and 2492463 transitions. [2020-12-22 07:48:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:48:25,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-12-22 07:48:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:48:27,747 INFO L225 Difference]: With dead ends: 1493889 [2020-12-22 07:48:27,748 INFO L226 Difference]: Without dead ends: 747263 [2020-12-22 07:48:28,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:48:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747263 states.