/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/product-lines/elevator_spec14_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:57:52,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:57:52,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:57:52,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:57:52,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:57:52,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:57:52,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:57:52,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:57:52,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:57:52,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:57:52,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:57:52,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:57:52,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:57:52,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:57:52,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:57:52,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:57:52,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:57:52,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:57:52,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:57:52,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:57:52,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:57:52,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:57:52,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:57:52,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:57:52,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:57:52,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:57:52,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:57:52,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:57:52,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:57:52,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:57:52,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:57:52,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:57:52,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:57:52,979 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:57:52,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:57:52,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:57:52,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:57:52,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:57:52,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:57:52,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:57:52,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:57:52,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:57:52,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:57:52,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:57:52,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:57:52,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:57:52,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:57:52,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:57:52,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:57:52,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:57:52,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:57:52,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:57:52,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:57:52,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:57:52,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:57:53,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:57:53,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:57:53,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:57:53,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:57:53,490 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:57:53,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2020-12-22 05:57:53,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4fadab0/01de3ab50b61482694da582d3505a94e/FLAG4607b1ceb [2020-12-22 05:57:54,508 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:57:54,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2020-12-22 05:57:54,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4fadab0/01de3ab50b61482694da582d3505a94e/FLAG4607b1ceb [2020-12-22 05:57:54,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f4fadab0/01de3ab50b61482694da582d3505a94e [2020-12-22 05:57:54,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:57:54,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:57:54,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:57:54,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:57:54,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:57:54,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:57:54" (1/1) ... [2020-12-22 05:57:54,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdacfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:54, skipping insertion in model container [2020-12-22 05:57:54,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:57:54" (1/1) ... [2020-12-22 05:57:54,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:57:54,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:57:55,484 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/product-lines/elevator_spec14_product32.cil.c[71197,71210] [2020-12-22 05:57:55,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:57:55,505 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:57:55,723 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/product-lines/elevator_spec14_product32.cil.c[71197,71210] [2020-12-22 05:57:55,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:57:55,793 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:57:55,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55 WrapperNode [2020-12-22 05:57:55,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:57:55,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:57:55,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:57:55,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:57:55,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:55,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:57,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:57:57,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:57:57,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:57:57,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:57:57,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:57,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:57,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:57,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:57,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:58,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:58,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (1/1) ... [2020-12-22 05:57:58,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:57:58,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:57:58,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:57:58,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:57:58,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (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 05:57:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:57:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:57:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:57:58,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:58:32,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:58:32,118 INFO L299 CfgBuilder]: Removed 4063 assume(true) statements. [2020-12-22 05:58:32,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:32 BoogieIcfgContainer [2020-12-22 05:58:32,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:58:32,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:58:32,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:58:32,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:58:32,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:57:54" (1/3) ... [2020-12-22 05:58:32,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6377ebb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:32, skipping insertion in model container [2020-12-22 05:58:32,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:57:55" (2/3) ... [2020-12-22 05:58:32,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6377ebb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:32, skipping insertion in model container [2020-12-22 05:58:32,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:32" (3/3) ... [2020-12-22 05:58:32,157 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product32.cil.c [2020-12-22 05:58:32,165 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:58:32,178 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:58:32,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:58:32,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:58:32,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:58:32,309 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:58:32,309 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:58:32,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:58:32,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:58:32,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:58:32,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:58:32,571 INFO L276 IsEmpty]: Start isEmpty. Operand 17487 states. [2020-12-22 05:58:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:58:32,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:32,591 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] [2020-12-22 05:58:32,591 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:32,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1890367581, now seen corresponding path program 1 times [2020-12-22 05:58:32,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:32,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178716794] [2020-12-22 05:58:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:33,312 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 05:58:33,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178716794] [2020-12-22 05:58:33,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:33,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:33,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548221863] [2020-12-22 05:58:33,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:33,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:33,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:33,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:33,346 INFO L87 Difference]: Start difference. First operand 17487 states. Second operand 3 states. [2020-12-22 05:58:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:34,356 INFO L93 Difference]: Finished difference Result 41990 states and 79190 transitions. [2020-12-22 05:58:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:34,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 05:58:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:34,566 INFO L225 Difference]: With dead ends: 41990 [2020-12-22 05:58:34,566 INFO L226 Difference]: Without dead ends: 24507 [2020-12-22 05:58:34,611 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 05:58:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24507 states. [2020-12-22 05:58:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24507 to 17483. [2020-12-22 05:58:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17483 states. [2020-12-22 05:58:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17483 states to 17483 states and 32959 transitions. [2020-12-22 05:58:35,370 INFO L78 Accepts]: Start accepts. Automaton has 17483 states and 32959 transitions. Word has length 27 [2020-12-22 05:58:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:35,371 INFO L481 AbstractCegarLoop]: Abstraction has 17483 states and 32959 transitions. [2020-12-22 05:58:35,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 17483 states and 32959 transitions. [2020-12-22 05:58:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:58:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:35,381 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] [2020-12-22 05:58:35,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:58:35,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1252184599, now seen corresponding path program 1 times [2020-12-22 05:58:35,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:35,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539338699] [2020-12-22 05:58:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:35,547 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 05:58:35,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539338699] [2020-12-22 05:58:35,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:35,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:35,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774304757] [2020-12-22 05:58:35,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:35,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:35,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:35,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:35,551 INFO L87 Difference]: Start difference. First operand 17483 states and 32959 transitions. Second operand 6 states. [2020-12-22 05:58:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:37,900 INFO L93 Difference]: Finished difference Result 48924 states and 92234 transitions. [2020-12-22 05:58:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:58:37,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-12-22 05:58:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:38,019 INFO L225 Difference]: With dead ends: 48924 [2020-12-22 05:58:38,020 INFO L226 Difference]: Without dead ends: 31483 [2020-12-22 05:58:38,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:58:38,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31483 states. [2020-12-22 05:58:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31483 to 17479. [2020-12-22 05:58:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17479 states. [2020-12-22 05:58:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17479 states to 17479 states and 32948 transitions. [2020-12-22 05:58:38,853 INFO L78 Accepts]: Start accepts. Automaton has 17479 states and 32948 transitions. Word has length 32 [2020-12-22 05:58:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:38,854 INFO L481 AbstractCegarLoop]: Abstraction has 17479 states and 32948 transitions. [2020-12-22 05:58:38,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 17479 states and 32948 transitions. [2020-12-22 05:58:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:58:38,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:38,856 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] [2020-12-22 05:58:38,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:58:38,857 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash 664868297, now seen corresponding path program 1 times [2020-12-22 05:58:38,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:38,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362107140] [2020-12-22 05:58:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:39,020 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 05:58:39,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362107140] [2020-12-22 05:58:39,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:39,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:39,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868467658] [2020-12-22 05:58:39,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:39,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:39,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:39,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:39,024 INFO L87 Difference]: Start difference. First operand 17479 states and 32948 transitions. Second operand 4 states. [2020-12-22 05:58:41,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:41,030 INFO L93 Difference]: Finished difference Result 55910 states and 105394 transitions. [2020-12-22 05:58:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:41,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 05:58:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:41,152 INFO L225 Difference]: With dead ends: 55910 [2020-12-22 05:58:41,153 INFO L226 Difference]: Without dead ends: 38473 [2020-12-22 05:58:41,200 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 05:58:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38473 states. [2020-12-22 05:58:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38473 to 17479. [2020-12-22 05:58:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17479 states. [2020-12-22 05:58:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17479 states to 17479 states and 32944 transitions. [2020-12-22 05:58:42,074 INFO L78 Accepts]: Start accepts. Automaton has 17479 states and 32944 transitions. Word has length 33 [2020-12-22 05:58:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:42,075 INFO L481 AbstractCegarLoop]: Abstraction has 17479 states and 32944 transitions. [2020-12-22 05:58:42,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:42,075 INFO L276 IsEmpty]: Start isEmpty. Operand 17479 states and 32944 transitions. [2020-12-22 05:58:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:58:42,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:42,077 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] [2020-12-22 05:58:42,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:58:42,077 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:42,078 INFO L82 PathProgramCache]: Analyzing trace with hash 288693222, now seen corresponding path program 1 times [2020-12-22 05:58:42,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:42,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408846823] [2020-12-22 05:58:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:42,147 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 05:58:42,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408846823] [2020-12-22 05:58:42,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:42,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:42,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796890905] [2020-12-22 05:58:42,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:42,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:42,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:42,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:42,151 INFO L87 Difference]: Start difference. First operand 17479 states and 32944 transitions. Second operand 4 states. [2020-12-22 05:58:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:43,546 INFO L93 Difference]: Finished difference Result 41934 states and 79050 transitions. [2020-12-22 05:58:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:43,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 05:58:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:43,617 INFO L225 Difference]: With dead ends: 41934 [2020-12-22 05:58:43,617 INFO L226 Difference]: Without dead ends: 24497 [2020-12-22 05:58:43,645 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 05:58:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24497 states. [2020-12-22 05:58:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24497 to 17479. [2020-12-22 05:58:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17479 states. [2020-12-22 05:58:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17479 states to 17479 states and 32935 transitions. [2020-12-22 05:58:44,439 INFO L78 Accepts]: Start accepts. Automaton has 17479 states and 32935 transitions. Word has length 34 [2020-12-22 05:58:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:44,440 INFO L481 AbstractCegarLoop]: Abstraction has 17479 states and 32935 transitions. [2020-12-22 05:58:44,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17479 states and 32935 transitions. [2020-12-22 05:58:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:58:44,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:44,441 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] [2020-12-22 05:58:44,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:58:44,442 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:44,443 INFO L82 PathProgramCache]: Analyzing trace with hash 821773316, now seen corresponding path program 1 times [2020-12-22 05:58:44,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:44,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752219096] [2020-12-22 05:58:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:44,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752219096] [2020-12-22 05:58:44,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:44,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:44,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147318809] [2020-12-22 05:58:44,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:44,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:44,646 INFO L87 Difference]: Start difference. First operand 17479 states and 32935 transitions. Second operand 4 states. [2020-12-22 05:58:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:46,115 INFO L93 Difference]: Finished difference Result 41934 states and 79032 transitions. [2020-12-22 05:58:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:46,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 05:58:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:46,157 INFO L225 Difference]: With dead ends: 41934 [2020-12-22 05:58:46,157 INFO L226 Difference]: Without dead ends: 24497 [2020-12-22 05:58:46,186 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 05:58:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24497 states. [2020-12-22 05:58:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24497 to 17479. [2020-12-22 05:58:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17479 states. [2020-12-22 05:58:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17479 states to 17479 states and 32926 transitions. [2020-12-22 05:58:46,977 INFO L78 Accepts]: Start accepts. Automaton has 17479 states and 32926 transitions. Word has length 35 [2020-12-22 05:58:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,977 INFO L481 AbstractCegarLoop]: Abstraction has 17479 states and 32926 transitions. [2020-12-22 05:58:46,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 17479 states and 32926 transitions. [2020-12-22 05:58:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:58:46,978 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,978 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] [2020-12-22 05:58:46,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:58:46,979 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1414780804, now seen corresponding path program 1 times [2020-12-22 05:58:46,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087466835] [2020-12-22 05:58:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:47,037 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 05:58:47,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087466835] [2020-12-22 05:58:47,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:47,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:47,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986950518] [2020-12-22 05:58:47,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:47,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:47,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:47,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:47,039 INFO L87 Difference]: Start difference. First operand 17479 states and 32926 transitions. Second operand 4 states. [2020-12-22 05:58:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:48,414 INFO L93 Difference]: Finished difference Result 48901 states and 92148 transitions. [2020-12-22 05:58:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:48,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 05:58:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:48,475 INFO L225 Difference]: With dead ends: 48901 [2020-12-22 05:58:48,476 INFO L226 Difference]: Without dead ends: 31443 [2020-12-22 05:58:48,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31443 states. [2020-12-22 05:58:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31443 to 17461. [2020-12-22 05:58:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2020-12-22 05:58:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 32895 transitions. [2020-12-22 05:58:49,443 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 32895 transitions. Word has length 35 [2020-12-22 05:58:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:49,443 INFO L481 AbstractCegarLoop]: Abstraction has 17461 states and 32895 transitions. [2020-12-22 05:58:49,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 32895 transitions. [2020-12-22 05:58:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:58:49,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:49,445 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] [2020-12-22 05:58:49,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:58:49,445 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:49,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:49,446 INFO L82 PathProgramCache]: Analyzing trace with hash -523007423, now seen corresponding path program 1 times [2020-12-22 05:58:49,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:49,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814530374] [2020-12-22 05:58:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:49,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814530374] [2020-12-22 05:58:49,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:49,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:49,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804986913] [2020-12-22 05:58:49,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:49,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:49,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:49,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:49,545 INFO L87 Difference]: Start difference. First operand 17461 states and 32895 transitions. Second operand 4 states. [2020-12-22 05:58:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:50,790 INFO L93 Difference]: Finished difference Result 41898 states and 78949 transitions. [2020-12-22 05:58:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:50,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 05:58:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:50,824 INFO L225 Difference]: With dead ends: 41898 [2020-12-22 05:58:50,824 INFO L226 Difference]: Without dead ends: 24458 [2020-12-22 05:58:50,842 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 05:58:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24458 states. [2020-12-22 05:58:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24458 to 17461. [2020-12-22 05:58:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2020-12-22 05:58:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 32889 transitions. [2020-12-22 05:58:51,768 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 32889 transitions. Word has length 36 [2020-12-22 05:58:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,768 INFO L481 AbstractCegarLoop]: Abstraction has 17461 states and 32889 transitions. [2020-12-22 05:58:51,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 32889 transitions. [2020-12-22 05:58:51,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:58:51,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,771 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] [2020-12-22 05:58:51,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:58:51,772 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,772 INFO L82 PathProgramCache]: Analyzing trace with hash 48068159, now seen corresponding path program 1 times [2020-12-22 05:58:51,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283467846] [2020-12-22 05:58:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,868 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 05:58:51,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283467846] [2020-12-22 05:58:51,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:51,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178143633] [2020-12-22 05:58:51,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:51,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:51,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:51,871 INFO L87 Difference]: Start difference. First operand 17461 states and 32889 transitions. Second operand 4 states. [2020-12-22 05:58:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:53,112 INFO L93 Difference]: Finished difference Result 41898 states and 78937 transitions. [2020-12-22 05:58:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:53,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 05:58:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:53,143 INFO L225 Difference]: With dead ends: 41898 [2020-12-22 05:58:53,143 INFO L226 Difference]: Without dead ends: 24458 [2020-12-22 05:58:53,158 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 05:58:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24458 states. [2020-12-22 05:58:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24458 to 17461. [2020-12-22 05:58:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2020-12-22 05:58:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 32883 transitions. [2020-12-22 05:58:53,907 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 32883 transitions. Word has length 37 [2020-12-22 05:58:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:53,908 INFO L481 AbstractCegarLoop]: Abstraction has 17461 states and 32883 transitions. [2020-12-22 05:58:53,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 32883 transitions. [2020-12-22 05:58:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:58:53,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:53,909 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] [2020-12-22 05:58:53,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:58:53,909 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:53,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2112997158, now seen corresponding path program 1 times [2020-12-22 05:58:53,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:53,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266878559] [2020-12-22 05:58:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:53,971 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 05:58:53,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266878559] [2020-12-22 05:58:53,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:53,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:53,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606828582] [2020-12-22 05:58:53,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:53,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:53,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:53,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:53,980 INFO L87 Difference]: Start difference. First operand 17461 states and 32883 transitions. Second operand 3 states. [2020-12-22 05:58:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:55,010 INFO L93 Difference]: Finished difference Result 41889 states and 78914 transitions. [2020-12-22 05:58:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:55,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 05:58:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:55,042 INFO L225 Difference]: With dead ends: 41889 [2020-12-22 05:58:55,042 INFO L226 Difference]: Without dead ends: 24449 [2020-12-22 05:58:55,055 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 05:58:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24449 states. [2020-12-22 05:58:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24449 to 17461. [2020-12-22 05:58:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2020-12-22 05:58:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 32882 transitions. [2020-12-22 05:58:55,718 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 32882 transitions. Word has length 38 [2020-12-22 05:58:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:55,718 INFO L481 AbstractCegarLoop]: Abstraction has 17461 states and 32882 transitions. [2020-12-22 05:58:55,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 32882 transitions. [2020-12-22 05:58:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:58:55,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:55,720 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] [2020-12-22 05:58:55,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:58:55,720 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:55,721 INFO L82 PathProgramCache]: Analyzing trace with hash -118852452, now seen corresponding path program 1 times [2020-12-22 05:58:55,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:55,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132192013] [2020-12-22 05:58:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:55,803 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 05:58:55,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132192013] [2020-12-22 05:58:55,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:55,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:58:55,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466055382] [2020-12-22 05:58:55,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:55,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:55,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:55,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:55,806 INFO L87 Difference]: Start difference. First operand 17461 states and 32882 transitions. Second operand 7 states. [2020-12-22 05:58:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:58,058 INFO L93 Difference]: Finished difference Result 55881 states and 105271 transitions. [2020-12-22 05:58:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:58,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-22 05:58:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:58,118 INFO L225 Difference]: With dead ends: 55881 [2020-12-22 05:58:58,118 INFO L226 Difference]: Without dead ends: 38447 [2020-12-22 05:58:58,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:58:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38447 states. [2020-12-22 05:58:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38447 to 17463. [2020-12-22 05:58:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17463 states. [2020-12-22 05:58:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17463 states to 17463 states and 32883 transitions. [2020-12-22 05:58:59,108 INFO L78 Accepts]: Start accepts. Automaton has 17463 states and 32883 transitions. Word has length 38 [2020-12-22 05:58:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:59,108 INFO L481 AbstractCegarLoop]: Abstraction has 17463 states and 32883 transitions. [2020-12-22 05:58:59,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:58:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 17463 states and 32883 transitions. [2020-12-22 05:58:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:58:59,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:59,109 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] [2020-12-22 05:58:59,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:58:59,110 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:59,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1910226346, now seen corresponding path program 1 times [2020-12-22 05:58:59,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:59,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401512182] [2020-12-22 05:58:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:59,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401512182] [2020-12-22 05:58:59,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:59,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:58:59,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481454856] [2020-12-22 05:58:59,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:59,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:59,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:59,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:59,216 INFO L87 Difference]: Start difference. First operand 17463 states and 32883 transitions. Second operand 3 states. [2020-12-22 05:59:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:01,445 INFO L93 Difference]: Finished difference Result 46553 states and 87749 transitions. [2020-12-22 05:59:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:01,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 05:59:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:01,489 INFO L225 Difference]: With dead ends: 46553 [2020-12-22 05:59:01,489 INFO L226 Difference]: Without dead ends: 32567 [2020-12-22 05:59:01,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:59:01,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32567 states. [2020-12-22 05:59:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32567 to 27605. [2020-12-22 05:59:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27605 states. [2020-12-22 05:59:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27605 states to 27605 states and 51973 transitions. [2020-12-22 05:59:02,772 INFO L78 Accepts]: Start accepts. Automaton has 27605 states and 51973 transitions. Word has length 39 [2020-12-22 05:59:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:02,772 INFO L481 AbstractCegarLoop]: Abstraction has 27605 states and 51973 transitions. [2020-12-22 05:59:02,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27605 states and 51973 transitions. [2020-12-22 05:59:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:59:02,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:02,778 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] [2020-12-22 05:59:02,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:59:02,778 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:02,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:02,778 INFO L82 PathProgramCache]: Analyzing trace with hash 889717692, now seen corresponding path program 1 times [2020-12-22 05:59:02,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:02,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260436011] [2020-12-22 05:59:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:02,878 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 05:59:02,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260436011] [2020-12-22 05:59:02,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:02,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:02,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910456118] [2020-12-22 05:59:02,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:59:02,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:02,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:59:02,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:02,881 INFO L87 Difference]: Start difference. First operand 27605 states and 51973 transitions. Second operand 8 states. [2020-12-22 05:59:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:05,675 INFO L93 Difference]: Finished difference Result 67803 states and 126987 transitions. [2020-12-22 05:59:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:59:05,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-12-22 05:59:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:05,747 INFO L225 Difference]: With dead ends: 67803 [2020-12-22 05:59:05,747 INFO L226 Difference]: Without dead ends: 41433 [2020-12-22 05:59:05,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:59:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41433 states. [2020-12-22 05:59:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41433 to 25504. [2020-12-22 05:59:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25504 states. [2020-12-22 05:59:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25504 states to 25504 states and 47803 transitions. [2020-12-22 05:59:07,003 INFO L78 Accepts]: Start accepts. Automaton has 25504 states and 47803 transitions. Word has length 58 [2020-12-22 05:59:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:07,004 INFO L481 AbstractCegarLoop]: Abstraction has 25504 states and 47803 transitions. [2020-12-22 05:59:07,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:59:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 25504 states and 47803 transitions. [2020-12-22 05:59:07,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:59:07,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:07,007 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] [2020-12-22 05:59:07,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:59:07,008 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:07,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:07,008 INFO L82 PathProgramCache]: Analyzing trace with hash -637672382, now seen corresponding path program 1 times [2020-12-22 05:59:07,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:07,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969338173] [2020-12-22 05:59:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:07,099 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 05:59:07,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969338173] [2020-12-22 05:59:07,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:07,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:07,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982177712] [2020-12-22 05:59:07,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:07,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:07,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:07,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:07,102 INFO L87 Difference]: Start difference. First operand 25504 states and 47803 transitions. Second operand 6 states. [2020-12-22 05:59:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:45,190 INFO L93 Difference]: Finished difference Result 243222 states and 454742 transitions. [2020-12-22 05:59:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:59:45,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 05:59:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:45,611 INFO L225 Difference]: With dead ends: 243222 [2020-12-22 05:59:45,612 INFO L226 Difference]: Without dead ends: 217781 [2020-12-22 05:59:45,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:59:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217781 states. [2020-12-22 05:59:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217781 to 37773. [2020-12-22 05:59:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37773 states. [2020-12-22 05:59:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37773 states to 37773 states and 70740 transitions. [2020-12-22 05:59:49,315 INFO L78 Accepts]: Start accepts. Automaton has 37773 states and 70740 transitions. Word has length 59 [2020-12-22 05:59:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:49,315 INFO L481 AbstractCegarLoop]: Abstraction has 37773 states and 70740 transitions. [2020-12-22 05:59:49,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 37773 states and 70740 transitions. [2020-12-22 05:59:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:59:49,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:49,318 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] [2020-12-22 05:59:49,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:59:49,319 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:49,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:49,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1897415072, now seen corresponding path program 1 times [2020-12-22 05:59:49,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:49,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951678973] [2020-12-22 05:59:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:49,411 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 05:59:49,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951678973] [2020-12-22 05:59:49,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:49,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:49,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163301083] [2020-12-22 05:59:49,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:49,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:49,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:49,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:49,414 INFO L87 Difference]: Start difference. First operand 37773 states and 70740 transitions. Second operand 4 states. [2020-12-22 06:00:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:04,162 INFO L93 Difference]: Finished difference Result 98033 states and 184507 transitions. [2020-12-22 06:00:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:04,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:00:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:04,271 INFO L225 Difference]: With dead ends: 98033 [2020-12-22 06:00:04,271 INFO L226 Difference]: Without dead ends: 60325 [2020-12-22 06:00:04,312 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 06:00:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60325 states. [2020-12-22 06:00:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60325 to 25573. [2020-12-22 06:00:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25573 states. [2020-12-22 06:00:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25573 states to 25573 states and 47798 transitions. [2020-12-22 06:00:06,128 INFO L78 Accepts]: Start accepts. Automaton has 25573 states and 47798 transitions. Word has length 60 [2020-12-22 06:00:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:06,128 INFO L481 AbstractCegarLoop]: Abstraction has 25573 states and 47798 transitions. [2020-12-22 06:00:06,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 25573 states and 47798 transitions. [2020-12-22 06:00:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:00:06,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:06,132 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] [2020-12-22 06:00:06,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:00:06,133 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:06,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1419994353, now seen corresponding path program 1 times [2020-12-22 06:00:06,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:06,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456257654] [2020-12-22 06:00:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:06,226 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 06:00:06,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456257654] [2020-12-22 06:00:06,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:06,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:06,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655131994] [2020-12-22 06:00:06,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:06,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:06,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:06,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:06,228 INFO L87 Difference]: Start difference. First operand 25573 states and 47798 transitions. Second operand 4 states. [2020-12-22 06:00:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:20,444 INFO L93 Difference]: Finished difference Result 66519 states and 125014 transitions. [2020-12-22 06:00:20,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:20,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:00:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:20,500 INFO L225 Difference]: With dead ends: 66519 [2020-12-22 06:00:20,500 INFO L226 Difference]: Without dead ends: 40985 [2020-12-22 06:00:20,521 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 06:00:20,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40985 states. [2020-12-22 06:00:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40985 to 25573. [2020-12-22 06:00:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25573 states. [2020-12-22 06:00:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25573 states to 25573 states and 47724 transitions. [2020-12-22 06:00:22,065 INFO L78 Accepts]: Start accepts. Automaton has 25573 states and 47724 transitions. Word has length 62 [2020-12-22 06:00:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:22,066 INFO L481 AbstractCegarLoop]: Abstraction has 25573 states and 47724 transitions. [2020-12-22 06:00:22,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 25573 states and 47724 transitions. [2020-12-22 06:00:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:00:22,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:22,070 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] [2020-12-22 06:00:22,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:00:22,070 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:22,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1412451015, now seen corresponding path program 1 times [2020-12-22 06:00:22,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:22,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932507498] [2020-12-22 06:00:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:22,155 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 06:00:22,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932507498] [2020-12-22 06:00:22,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:22,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:22,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151373235] [2020-12-22 06:00:22,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:22,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:22,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:22,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:22,157 INFO L87 Difference]: Start difference. First operand 25573 states and 47724 transitions. Second operand 6 states. [2020-12-22 06:01:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:21,207 INFO L93 Difference]: Finished difference Result 320321 states and 598105 transitions. [2020-12-22 06:01:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:01:21,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 06:01:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:22,076 INFO L225 Difference]: With dead ends: 320321 [2020-12-22 06:01:22,076 INFO L226 Difference]: Without dead ends: 294814 [2020-12-22 06:01:22,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:01:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294814 states. [2020-12-22 06:01:27,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294814 to 51109. [2020-12-22 06:01:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51109 states. [2020-12-22 06:01:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51109 states to 51109 states and 95412 transitions. [2020-12-22 06:01:27,618 INFO L78 Accepts]: Start accepts. Automaton has 51109 states and 95412 transitions. Word has length 65 [2020-12-22 06:01:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:27,618 INFO L481 AbstractCegarLoop]: Abstraction has 51109 states and 95412 transitions. [2020-12-22 06:01:27,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 51109 states and 95412 transitions. [2020-12-22 06:01:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:01:27,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:27,624 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] [2020-12-22 06:01:27,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:01:27,624 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:27,625 INFO L82 PathProgramCache]: Analyzing trace with hash 122847813, now seen corresponding path program 1 times [2020-12-22 06:01:27,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:27,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924553395] [2020-12-22 06:01:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:27,699 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 06:01:27,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924553395] [2020-12-22 06:01:27,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:27,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:27,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802439284] [2020-12-22 06:01:27,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:27,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:27,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:27,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:27,701 INFO L87 Difference]: Start difference. First operand 51109 states and 95412 transitions. Second operand 6 states.