/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_spec1_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:01:21,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:01:21,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:01:21,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:01:21,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:01:21,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:01:21,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:01:21,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:01:21,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:01:21,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:01:21,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:01:21,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:01:21,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:01:21,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:01:21,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:01:21,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:01:21,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:01:21,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:01:21,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:01:21,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:01:21,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:01:21,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:01:21,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:01:21,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:01:21,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:01:21,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:01:21,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:01:21,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:01:21,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:01:21,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:01:21,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:01:21,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:01:21,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:01:21,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:01:21,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:01:21,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:01:21,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:01:21,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:01:21,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:01:21,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:01:21,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:01:21,157 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:01:21,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:01:21,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:01:21,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:01:21,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:01:21,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:01:21,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:01:21,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:01:21,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:01:21,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:01:21,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:01:21,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:01:21,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:01:21,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:01:21,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:01:21,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:01:21,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:01:21,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:01:21,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:01:21,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:01:21,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:01:21,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:01:21,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:01:21,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:01:21,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:01:21,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:01:21,558 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:01:21,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2020-12-22 06:01:21,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a62f9cb58/25e87e4fffe24c5eb295f774bb74a8da/FLAGeb6159783 [2020-12-22 06:01:22,523 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:01:22,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2020-12-22 06:01:22,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a62f9cb58/25e87e4fffe24c5eb295f774bb74a8da/FLAGeb6159783 [2020-12-22 06:01:22,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a62f9cb58/25e87e4fffe24c5eb295f774bb74a8da [2020-12-22 06:01:22,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:01:22,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:01:22,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:01:22,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:01:22,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:01:22,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:22" (1/1) ... [2020-12-22 06:01:22,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11364cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:22, skipping insertion in model container [2020-12-22 06:01:22,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:22" (1/1) ... [2020-12-22 06:01:22,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:01:22,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:01:23,190 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_spec1_product25.cil.c[13083,13096] [2020-12-22 06:01:23,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:01:23,563 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:01:23,631 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_spec1_product25.cil.c[13083,13096] [2020-12-22 06:01:23,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:01:23,793 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:01:23,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23 WrapperNode [2020-12-22 06:01:23,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:01:23,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:01:23,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:01:23,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:01:23,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:23,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:01:24,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:01:24,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:01:24,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:01:24,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (1/1) ... [2020-12-22 06:01:24,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:01:24,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:01:24,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:01:24,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:01:24,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (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 06:01:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:01:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:01:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:01:24,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:01:30,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:01:30,934 INFO L299 CfgBuilder]: Removed 589 assume(true) statements. [2020-12-22 06:01:30,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:30 BoogieIcfgContainer [2020-12-22 06:01:30,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:01:30,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:01:30,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:01:30,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:01:30,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:01:22" (1/3) ... [2020-12-22 06:01:30,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7d28d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:30, skipping insertion in model container [2020-12-22 06:01:30,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:23" (2/3) ... [2020-12-22 06:01:30,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7d28d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:30, skipping insertion in model container [2020-12-22 06:01:30,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:30" (3/3) ... [2020-12-22 06:01:30,949 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2020-12-22 06:01:30,955 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:01:30,962 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:01:30,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:01:31,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:01:31,024 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:01:31,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:01:31,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:01:31,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:01:31,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:01:31,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:01:31,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:01:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states. [2020-12-22 06:01:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:01:31,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:31,104 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] [2020-12-22 06:01:31,104 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 06:01:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1148200267, now seen corresponding path program 1 times [2020-12-22 06:01:31,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:31,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9269016] [2020-12-22 06:01:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:31,636 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 06:01:31,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9269016] [2020-12-22 06:01:31,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:31,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:31,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687157968] [2020-12-22 06:01:31,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:31,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:31,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:31,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:31,661 INFO L87 Difference]: Start difference. First operand 2511 states. Second operand 3 states. [2020-12-22 06:01:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:32,024 INFO L93 Difference]: Finished difference Result 7453 states and 14051 transitions. [2020-12-22 06:01:32,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:32,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 06:01:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:32,097 INFO L225 Difference]: With dead ends: 7453 [2020-12-22 06:01:32,098 INFO L226 Difference]: Without dead ends: 4947 [2020-12-22 06:01:32,118 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 06:01:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2020-12-22 06:01:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 2507. [2020-12-22 06:01:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2507 states. [2020-12-22 06:01:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4714 transitions. [2020-12-22 06:01:32,338 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4714 transitions. Word has length 47 [2020-12-22 06:01:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:32,338 INFO L481 AbstractCegarLoop]: Abstraction has 2507 states and 4714 transitions. [2020-12-22 06:01:32,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4714 transitions. [2020-12-22 06:01:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:01:32,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:32,343 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] [2020-12-22 06:01:32,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:01:32,344 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 06:01:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash 293547687, now seen corresponding path program 1 times [2020-12-22 06:01:32,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:32,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615663375] [2020-12-22 06:01:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:32,618 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 06:01:32,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615663375] [2020-12-22 06:01:32,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:32,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:32,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018780488] [2020-12-22 06:01:32,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:32,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:32,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:32,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:32,623 INFO L87 Difference]: Start difference. First operand 2507 states and 4714 transitions. Second operand 6 states. [2020-12-22 06:01:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:33,482 INFO L93 Difference]: Finished difference Result 9803 states and 18453 transitions. [2020-12-22 06:01:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:33,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-22 06:01:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:33,533 INFO L225 Difference]: With dead ends: 9803 [2020-12-22 06:01:33,534 INFO L226 Difference]: Without dead ends: 7339 [2020-12-22 06:01:33,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:01:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2020-12-22 06:01:33,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 2503. [2020-12-22 06:01:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-12-22 06:01:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4703 transitions. [2020-12-22 06:01:33,711 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4703 transitions. Word has length 54 [2020-12-22 06:01:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:33,712 INFO L481 AbstractCegarLoop]: Abstraction has 2503 states and 4703 transitions. [2020-12-22 06:01:33,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4703 transitions. [2020-12-22 06:01:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:01:33,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:33,719 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] [2020-12-22 06:01:33,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:01:33,720 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 06:01:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1945578502, now seen corresponding path program 1 times [2020-12-22 06:01:33,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:33,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128387070] [2020-12-22 06:01:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:33,875 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 06:01:33,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128387070] [2020-12-22 06:01:33,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:33,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:33,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262444581] [2020-12-22 06:01:33,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:33,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:33,882 INFO L87 Difference]: Start difference. First operand 2503 states and 4703 transitions. Second operand 4 states. [2020-12-22 06:01:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:34,634 INFO L93 Difference]: Finished difference Result 7397 states and 13918 transitions. [2020-12-22 06:01:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:34,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 06:01:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:34,668 INFO L225 Difference]: With dead ends: 7397 [2020-12-22 06:01:34,669 INFO L226 Difference]: Without dead ends: 4937 [2020-12-22 06:01:34,675 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 06:01:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2020-12-22 06:01:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 2503. [2020-12-22 06:01:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-12-22 06:01:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4694 transitions. [2020-12-22 06:01:34,983 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4694 transitions. Word has length 56 [2020-12-22 06:01:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:34,990 INFO L481 AbstractCegarLoop]: Abstraction has 2503 states and 4694 transitions. [2020-12-22 06:01:34,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4694 transitions. [2020-12-22 06:01:34,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:01:34,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:34,996 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 06:01:34,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:01:34,996 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 06:01:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:34,997 INFO L82 PathProgramCache]: Analyzing trace with hash 895503117, now seen corresponding path program 1 times [2020-12-22 06:01:34,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:34,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895485117] [2020-12-22 06:01:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:35,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895485117] [2020-12-22 06:01:35,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:35,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:35,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845623055] [2020-12-22 06:01:35,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:35,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:35,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:35,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:35,111 INFO L87 Difference]: Start difference. First operand 2503 states and 4694 transitions. Second operand 4 states. [2020-12-22 06:01:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:35,650 INFO L93 Difference]: Finished difference Result 7397 states and 13900 transitions. [2020-12-22 06:01:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:35,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:01:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:35,682 INFO L225 Difference]: With dead ends: 7397 [2020-12-22 06:01:35,682 INFO L226 Difference]: Without dead ends: 4937 [2020-12-22 06:01:35,689 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 06:01:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2020-12-22 06:01:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 2503. [2020-12-22 06:01:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-12-22 06:01:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4685 transitions. [2020-12-22 06:01:35,830 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4685 transitions. Word has length 58 [2020-12-22 06:01:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:35,830 INFO L481 AbstractCegarLoop]: Abstraction has 2503 states and 4685 transitions. [2020-12-22 06:01:35,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4685 transitions. [2020-12-22 06:01:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:01:35,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:35,833 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 06:01:35,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:01:35,834 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 06:01:35,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:35,834 INFO L82 PathProgramCache]: Analyzing trace with hash 83385338, now seen corresponding path program 1 times [2020-12-22 06:01:35,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:35,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944869450] [2020-12-22 06:01:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:35,901 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 06:01:35,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944869450] [2020-12-22 06:01:35,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:35,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:35,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077974010] [2020-12-22 06:01:35,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:35,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:35,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:35,903 INFO L87 Difference]: Start difference. First operand 2503 states and 4685 transitions. Second operand 4 states. [2020-12-22 06:01:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:36,605 INFO L93 Difference]: Finished difference Result 12205 states and 22932 transitions. [2020-12-22 06:01:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:36,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:01:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:36,662 INFO L225 Difference]: With dead ends: 12205 [2020-12-22 06:01:36,663 INFO L226 Difference]: Without dead ends: 9745 [2020-12-22 06:01:36,672 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 06:01:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2020-12-22 06:01:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 2503. [2020-12-22 06:01:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2503 states. [2020-12-22 06:01:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4681 transitions. [2020-12-22 06:01:36,878 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4681 transitions. Word has length 60 [2020-12-22 06:01:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:36,879 INFO L481 AbstractCegarLoop]: Abstraction has 2503 states and 4681 transitions. [2020-12-22 06:01:36,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4681 transitions. [2020-12-22 06:01:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:01:36,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:36,882 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 06:01:36,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:01:36,883 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 06:01:36,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:36,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1957588858, now seen corresponding path program 1 times [2020-12-22 06:01:36,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:36,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137330077] [2020-12-22 06:01:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:37,007 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 06:01:37,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137330077] [2020-12-22 06:01:37,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:37,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:37,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296183944] [2020-12-22 06:01:37,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:37,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:37,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:37,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:37,010 INFO L87 Difference]: Start difference. First operand 2503 states and 4681 transitions. Second operand 4 states. [2020-12-22 06:01:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:37,469 INFO L93 Difference]: Finished difference Result 9780 states and 18367 transitions. [2020-12-22 06:01:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:37,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:01:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:37,495 INFO L225 Difference]: With dead ends: 9780 [2020-12-22 06:01:37,495 INFO L226 Difference]: Without dead ends: 7299 [2020-12-22 06:01:37,503 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 06:01:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2020-12-22 06:01:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 2485. [2020-12-22 06:01:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2485 states. [2020-12-22 06:01:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4650 transitions. [2020-12-22 06:01:37,697 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4650 transitions. Word has length 60 [2020-12-22 06:01:37,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:37,698 INFO L481 AbstractCegarLoop]: Abstraction has 2485 states and 4650 transitions. [2020-12-22 06:01:37,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4650 transitions. [2020-12-22 06:01:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:01:37,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:37,701 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] [2020-12-22 06:01:37,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:01:37,702 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 06:01:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash 988149685, now seen corresponding path program 1 times [2020-12-22 06:01:37,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:37,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898851590] [2020-12-22 06:01:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:37,813 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 06:01:37,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898851590] [2020-12-22 06:01:37,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:37,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:37,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114062748] [2020-12-22 06:01:37,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:37,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:37,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:37,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:37,817 INFO L87 Difference]: Start difference. First operand 2485 states and 4650 transitions. Second operand 4 states. [2020-12-22 06:01:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:38,247 INFO L93 Difference]: Finished difference Result 7361 states and 13813 transitions. [2020-12-22 06:01:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:38,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 06:01:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:38,263 INFO L225 Difference]: With dead ends: 7361 [2020-12-22 06:01:38,263 INFO L226 Difference]: Without dead ends: 4898 [2020-12-22 06:01:38,271 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 06:01:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2020-12-22 06:01:38,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2485. [2020-12-22 06:01:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2485 states. [2020-12-22 06:01:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4644 transitions. [2020-12-22 06:01:38,452 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4644 transitions. Word has length 61 [2020-12-22 06:01:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:38,453 INFO L481 AbstractCegarLoop]: Abstraction has 2485 states and 4644 transitions. [2020-12-22 06:01:38,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4644 transitions. [2020-12-22 06:01:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:01:38,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:38,456 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 06:01:38,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:01:38,456 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 06:01:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:38,457 INFO L82 PathProgramCache]: Analyzing trace with hash -408560395, now seen corresponding path program 1 times [2020-12-22 06:01:38,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:38,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043412903] [2020-12-22 06:01:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:38,557 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 06:01:38,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043412903] [2020-12-22 06:01:38,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:38,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:38,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509607886] [2020-12-22 06:01:38,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:38,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:38,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:38,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:38,559 INFO L87 Difference]: Start difference. First operand 2485 states and 4644 transitions. Second operand 4 states. [2020-12-22 06:01:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:38,960 INFO L93 Difference]: Finished difference Result 7361 states and 13801 transitions. [2020-12-22 06:01:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:38,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:01:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:38,978 INFO L225 Difference]: With dead ends: 7361 [2020-12-22 06:01:38,978 INFO L226 Difference]: Without dead ends: 4898 [2020-12-22 06:01:38,985 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 06:01:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2020-12-22 06:01:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2485. [2020-12-22 06:01:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2485 states. [2020-12-22 06:01:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4638 transitions. [2020-12-22 06:01:39,149 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4638 transitions. Word has length 62 [2020-12-22 06:01:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:39,150 INFO L481 AbstractCegarLoop]: Abstraction has 2485 states and 4638 transitions. [2020-12-22 06:01:39,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4638 transitions. [2020-12-22 06:01:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:01:39,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:39,154 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] [2020-12-22 06:01:39,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:01:39,154 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 06:01:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:39,155 INFO L82 PathProgramCache]: Analyzing trace with hash -136533680, now seen corresponding path program 1 times [2020-12-22 06:01:39,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:39,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910915651] [2020-12-22 06:01:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:39,288 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 06:01:39,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910915651] [2020-12-22 06:01:39,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:39,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:01:39,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777418131] [2020-12-22 06:01:39,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:01:39,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:39,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:01:39,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:39,290 INFO L87 Difference]: Start difference. First operand 2485 states and 4638 transitions. Second operand 7 states. [2020-12-22 06:01:40,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:40,320 INFO L93 Difference]: Finished difference Result 12176 states and 22846 transitions. [2020-12-22 06:01:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:40,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-12-22 06:01:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:40,353 INFO L225 Difference]: With dead ends: 12176 [2020-12-22 06:01:40,353 INFO L226 Difference]: Without dead ends: 9719 [2020-12-22 06:01:40,363 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 06:01:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9719 states. [2020-12-22 06:01:40,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9719 to 2487. [2020-12-22 06:01:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2487 states. [2020-12-22 06:01:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4639 transitions. [2020-12-22 06:01:40,588 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4639 transitions. Word has length 63 [2020-12-22 06:01:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:40,589 INFO L481 AbstractCegarLoop]: Abstraction has 2487 states and 4639 transitions. [2020-12-22 06:01:40,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:01:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4639 transitions. [2020-12-22 06:01:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:01:40,597 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:40,597 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 06:01:40,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:01:40,598 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 06:01:40,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1390808651, now seen corresponding path program 1 times [2020-12-22 06:01:40,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:40,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143917052] [2020-12-22 06:01:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:40,686 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 06:01:40,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143917052] [2020-12-22 06:01:40,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:40,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:01:40,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256204795] [2020-12-22 06:01:40,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:01:40,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:40,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:01:40,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:40,689 INFO L87 Difference]: Start difference. First operand 2487 states and 4639 transitions. Second operand 7 states. [2020-12-22 06:01:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:41,594 INFO L93 Difference]: Finished difference Result 12168 states and 22825 transitions. [2020-12-22 06:01:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:41,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 06:01:41,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:41,624 INFO L225 Difference]: With dead ends: 12168 [2020-12-22 06:01:41,624 INFO L226 Difference]: Without dead ends: 9714 [2020-12-22 06:01:41,632 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 06:01:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2020-12-22 06:01:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 2492. [2020-12-22 06:01:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2492 states. [2020-12-22 06:01:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4647 transitions. [2020-12-22 06:01:41,824 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4647 transitions. Word has length 65 [2020-12-22 06:01:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:41,825 INFO L481 AbstractCegarLoop]: Abstraction has 2492 states and 4647 transitions. [2020-12-22 06:01:41,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:01:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4647 transitions. [2020-12-22 06:01:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:01:41,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:41,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:41,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:01:41,828 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 06:01:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:41,829 INFO L82 PathProgramCache]: Analyzing trace with hash -366859568, now seen corresponding path program 1 times [2020-12-22 06:01:41,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:41,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697626555] [2020-12-22 06:01:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:41,912 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 06:01:41,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697626555] [2020-12-22 06:01:41,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:41,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:41,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68926592] [2020-12-22 06:01:41,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:41,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:41,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:41,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:41,916 INFO L87 Difference]: Start difference. First operand 2492 states and 4647 transitions. Second operand 3 states. [2020-12-22 06:01:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:42,063 INFO L93 Difference]: Finished difference Result 4926 states and 9212 transitions. [2020-12-22 06:01:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:42,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 06:01:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:42,078 INFO L225 Difference]: With dead ends: 4926 [2020-12-22 06:01:42,079 INFO L226 Difference]: Without dead ends: 2471 [2020-12-22 06:01:42,084 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 06:01:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-12-22 06:01:42,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2471. [2020-12-22 06:01:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2471 states. [2020-12-22 06:01:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 4611 transitions. [2020-12-22 06:01:42,221 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 4611 transitions. Word has length 67 [2020-12-22 06:01:42,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:42,221 INFO L481 AbstractCegarLoop]: Abstraction has 2471 states and 4611 transitions. [2020-12-22 06:01:42,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 4611 transitions. [2020-12-22 06:01:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:01:42,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:42,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:42,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:01:42,229 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 06:01:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash -795842891, now seen corresponding path program 1 times [2020-12-22 06:01:42,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:42,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458871666] [2020-12-22 06:01:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:42,320 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 06:01:42,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458871666] [2020-12-22 06:01:42,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:42,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:42,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224791843] [2020-12-22 06:01:42,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:42,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:42,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:42,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:42,322 INFO L87 Difference]: Start difference. First operand 2471 states and 4611 transitions. Second operand 5 states. [2020-12-22 06:01:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:42,526 INFO L93 Difference]: Finished difference Result 4875 states and 9134 transitions. [2020-12-22 06:01:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:42,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 06:01:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:42,534 INFO L225 Difference]: With dead ends: 4875 [2020-12-22 06:01:42,534 INFO L226 Difference]: Without dead ends: 2465 [2020-12-22 06:01:42,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:42,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-22 06:01:42,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-22 06:01:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:01:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4602 transitions. [2020-12-22 06:01:42,704 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4602 transitions. Word has length 69 [2020-12-22 06:01:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:42,704 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4602 transitions. [2020-12-22 06:01:42,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4602 transitions. [2020-12-22 06:01:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:01:42,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:42,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:42,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:01:42,708 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 06:01:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:42,709 INFO L82 PathProgramCache]: Analyzing trace with hash 495870773, now seen corresponding path program 1 times [2020-12-22 06:01:42,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:42,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368359915] [2020-12-22 06:01:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:42,774 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 06:01:42,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368359915] [2020-12-22 06:01:42,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:42,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:42,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900856597] [2020-12-22 06:01:42,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:42,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:42,777 INFO L87 Difference]: Start difference. First operand 2465 states and 4602 transitions. Second operand 4 states. [2020-12-22 06:01:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:42,942 INFO L93 Difference]: Finished difference Result 4869 states and 9125 transitions. [2020-12-22 06:01:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:42,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 06:01:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:42,949 INFO L225 Difference]: With dead ends: 4869 [2020-12-22 06:01:42,950 INFO L226 Difference]: Without dead ends: 2451 [2020-12-22 06:01:42,955 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 06:01:42,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2020-12-22 06:01:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2451. [2020-12-22 06:01:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states. [2020-12-22 06:01:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4581 transitions. [2020-12-22 06:01:43,096 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4581 transitions. Word has length 69 [2020-12-22 06:01:43,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:43,096 INFO L481 AbstractCegarLoop]: Abstraction has 2451 states and 4581 transitions. [2020-12-22 06:01:43,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4581 transitions. [2020-12-22 06:01:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:01:43,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:43,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:43,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:01:43,100 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 06:01:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash -528043870, now seen corresponding path program 1 times [2020-12-22 06:01:43,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:43,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18948589] [2020-12-22 06:01:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:43,186 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 06:01:43,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18948589] [2020-12-22 06:01:43,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:43,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:43,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343819555] [2020-12-22 06:01:43,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:43,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:43,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:43,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:43,188 INFO L87 Difference]: Start difference. First operand 2451 states and 4581 transitions. Second operand 6 states. [2020-12-22 06:01:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:43,490 INFO L93 Difference]: Finished difference Result 4869 states and 9120 transitions. [2020-12-22 06:01:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:43,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 06:01:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:43,497 INFO L225 Difference]: With dead ends: 4869 [2020-12-22 06:01:43,498 INFO L226 Difference]: Without dead ends: 2471 [2020-12-22 06:01:43,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:01:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-12-22 06:01:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2451. [2020-12-22 06:01:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states. [2020-12-22 06:01:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4580 transitions. [2020-12-22 06:01:43,648 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4580 transitions. Word has length 70 [2020-12-22 06:01:43,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:43,648 INFO L481 AbstractCegarLoop]: Abstraction has 2451 states and 4580 transitions. [2020-12-22 06:01:43,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4580 transitions. [2020-12-22 06:01:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:01:43,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:43,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:43,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:01:43,652 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 06:01:43,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:43,653 INFO L82 PathProgramCache]: Analyzing trace with hash 667654126, now seen corresponding path program 1 times [2020-12-22 06:01:43,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:43,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713582173] [2020-12-22 06:01:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:43,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713582173] [2020-12-22 06:01:43,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:43,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:43,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700737335] [2020-12-22 06:01:43,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:43,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:43,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:43,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:43,749 INFO L87 Difference]: Start difference. First operand 2451 states and 4580 transitions. Second operand 6 states. [2020-12-22 06:01:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:44,047 INFO L93 Difference]: Finished difference Result 4859 states and 9101 transitions. [2020-12-22 06:01:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:44,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-12-22 06:01:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:44,055 INFO L225 Difference]: With dead ends: 4859 [2020-12-22 06:01:44,056 INFO L226 Difference]: Without dead ends: 2466 [2020-12-22 06:01:44,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:01:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2020-12-22 06:01:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2451. [2020-12-22 06:01:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states. [2020-12-22 06:01:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 4579 transitions. [2020-12-22 06:01:44,197 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 4579 transitions. Word has length 71 [2020-12-22 06:01:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:44,197 INFO L481 AbstractCegarLoop]: Abstraction has 2451 states and 4579 transitions. [2020-12-22 06:01:44,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 4579 transitions. [2020-12-22 06:01:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:01:44,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:44,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:44,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:01:44,201 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 06:01:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash 784818637, now seen corresponding path program 1 times [2020-12-22 06:01:44,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:44,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83777087] [2020-12-22 06:01:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:44,280 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 06:01:44,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83777087] [2020-12-22 06:01:44,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:44,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:44,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664675835] [2020-12-22 06:01:44,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:44,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:44,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:44,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:44,283 INFO L87 Difference]: Start difference. First operand 2451 states and 4579 transitions. Second operand 5 states. [2020-12-22 06:01:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:46,351 INFO L93 Difference]: Finished difference Result 9761 states and 18263 transitions. [2020-12-22 06:01:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:01:46,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 06:01:46,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:46,366 INFO L225 Difference]: With dead ends: 9761 [2020-12-22 06:01:46,366 INFO L226 Difference]: Without dead ends: 7383 [2020-12-22 06:01:46,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:01:46,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7383 states. [2020-12-22 06:01:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7383 to 2455. [2020-12-22 06:01:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2020-12-22 06:01:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4583 transitions. [2020-12-22 06:01:46,555 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4583 transitions. Word has length 72 [2020-12-22 06:01:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:46,556 INFO L481 AbstractCegarLoop]: Abstraction has 2455 states and 4583 transitions. [2020-12-22 06:01:46,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4583 transitions. [2020-12-22 06:01:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:01:46,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:46,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:46,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:01:46,559 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 06:01:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash -631604357, now seen corresponding path program 1 times [2020-12-22 06:01:46,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:46,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578084149] [2020-12-22 06:01:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:46,690 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 06:01:46,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578084149] [2020-12-22 06:01:46,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:46,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:46,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430018840] [2020-12-22 06:01:46,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:46,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:46,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:46,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:46,693 INFO L87 Difference]: Start difference. First operand 2455 states and 4583 transitions. Second operand 4 states. [2020-12-22 06:01:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:49,098 INFO L93 Difference]: Finished difference Result 6239 states and 11684 transitions. [2020-12-22 06:01:49,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:49,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-22 06:01:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:49,105 INFO L225 Difference]: With dead ends: 6239 [2020-12-22 06:01:49,105 INFO L226 Difference]: Without dead ends: 3850 [2020-12-22 06:01:49,110 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 06:01:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2020-12-22 06:01:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3420. [2020-12-22 06:01:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3420 states. [2020-12-22 06:01:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 6393 transitions. [2020-12-22 06:01:49,313 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 6393 transitions. Word has length 73 [2020-12-22 06:01:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:49,313 INFO L481 AbstractCegarLoop]: Abstraction has 3420 states and 6393 transitions. [2020-12-22 06:01:49,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 6393 transitions. [2020-12-22 06:01:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:01:49,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:49,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:49,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:01:49,317 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1435945176, now seen corresponding path program 1 times [2020-12-22 06:01:49,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:49,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467126486] [2020-12-22 06:01:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:49,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467126486] [2020-12-22 06:01:49,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:49,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:49,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962873308] [2020-12-22 06:01:49,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:49,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:49,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:49,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:49,426 INFO L87 Difference]: Start difference. First operand 3420 states and 6393 transitions. Second operand 4 states. [2020-12-22 06:01:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:51,815 INFO L93 Difference]: Finished difference Result 7204 states and 13493 transitions. [2020-12-22 06:01:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:51,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 06:01:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:51,822 INFO L225 Difference]: With dead ends: 7204 [2020-12-22 06:01:51,822 INFO L226 Difference]: Without dead ends: 3850 [2020-12-22 06:01:51,826 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 06:01:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2020-12-22 06:01:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3420. [2020-12-22 06:01:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3420 states. [2020-12-22 06:01:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 6391 transitions. [2020-12-22 06:01:52,060 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 6391 transitions. Word has length 74 [2020-12-22 06:01:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:52,061 INFO L481 AbstractCegarLoop]: Abstraction has 3420 states and 6391 transitions. [2020-12-22 06:01:52,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 6391 transitions. [2020-12-22 06:01:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:01:52,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:52,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:52,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:01:52,066 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:52,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:52,067 INFO L82 PathProgramCache]: Analyzing trace with hash -445607754, now seen corresponding path program 1 times [2020-12-22 06:01:52,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:52,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512221805] [2020-12-22 06:01:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:52,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512221805] [2020-12-22 06:01:52,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:52,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:52,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726215137] [2020-12-22 06:01:52,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:52,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:52,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:52,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:52,219 INFO L87 Difference]: Start difference. First operand 3420 states and 6391 transitions. Second operand 4 states. [2020-12-22 06:01:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:54,726 INFO L93 Difference]: Finished difference Result 7204 states and 13490 transitions. [2020-12-22 06:01:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:54,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 06:01:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:54,733 INFO L225 Difference]: With dead ends: 7204 [2020-12-22 06:01:54,733 INFO L226 Difference]: Without dead ends: 3850 [2020-12-22 06:01:54,738 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 06:01:54,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2020-12-22 06:01:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3420. [2020-12-22 06:01:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3420 states. [2020-12-22 06:01:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 6389 transitions. [2020-12-22 06:01:54,962 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 6389 transitions. Word has length 75 [2020-12-22 06:01:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:54,963 INFO L481 AbstractCegarLoop]: Abstraction has 3420 states and 6389 transitions. [2020-12-22 06:01:54,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 6389 transitions. [2020-12-22 06:01:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:01:54,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:54,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:54,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:01:54,966 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:54,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2067897629, now seen corresponding path program 1 times [2020-12-22 06:01:54,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:54,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595334516] [2020-12-22 06:01:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:55,045 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 06:01:55,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595334516] [2020-12-22 06:01:55,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:55,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:55,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254279994] [2020-12-22 06:01:55,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:55,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:55,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:55,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:55,047 INFO L87 Difference]: Start difference. First operand 3420 states and 6389 transitions. Second operand 5 states. [2020-12-22 06:01:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:56,378 INFO L93 Difference]: Finished difference Result 25683 states and 48265 transitions. [2020-12-22 06:01:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:56,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 06:01:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:56,411 INFO L225 Difference]: With dead ends: 25683 [2020-12-22 06:01:56,411 INFO L226 Difference]: Without dead ends: 22338 [2020-12-22 06:01:56,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:01:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22338 states. [2020-12-22 06:01:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22338 to 6113. [2020-12-22 06:01:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6113 states. [2020-12-22 06:01:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6113 states to 6113 states and 11452 transitions. [2020-12-22 06:01:56,983 INFO L78 Accepts]: Start accepts. Automaton has 6113 states and 11452 transitions. Word has length 75 [2020-12-22 06:01:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:56,983 INFO L481 AbstractCegarLoop]: Abstraction has 6113 states and 11452 transitions. [2020-12-22 06:01:56,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6113 states and 11452 transitions. [2020-12-22 06:01:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:01:56,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:56,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:56,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:01:56,987 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2093056161, now seen corresponding path program 1 times [2020-12-22 06:01:56,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:56,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439832100] [2020-12-22 06:01:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:57,050 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 06:01:57,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439832100] [2020-12-22 06:01:57,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:57,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:57,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196283573] [2020-12-22 06:01:57,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:57,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:57,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:57,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:57,052 INFO L87 Difference]: Start difference. First operand 6113 states and 11452 transitions. Second operand 4 states. [2020-12-22 06:01:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:57,676 INFO L93 Difference]: Finished difference Result 10787 states and 20115 transitions. [2020-12-22 06:01:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:57,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 06:01:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:57,690 INFO L225 Difference]: With dead ends: 10787 [2020-12-22 06:01:57,690 INFO L226 Difference]: Without dead ends: 8342 [2020-12-22 06:01:57,695 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 06:01:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2020-12-22 06:01:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 6119. [2020-12-22 06:01:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6119 states. [2020-12-22 06:01:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 11458 transitions. [2020-12-22 06:01:58,046 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 11458 transitions. Word has length 75 [2020-12-22 06:01:58,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:58,046 INFO L481 AbstractCegarLoop]: Abstraction has 6119 states and 11458 transitions. [2020-12-22 06:01:58,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:58,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 11458 transitions. [2020-12-22 06:01:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:01:58,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:58,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:58,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:01:58,052 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:58,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:58,053 INFO L82 PathProgramCache]: Analyzing trace with hash -33420482, now seen corresponding path program 1 times [2020-12-22 06:01:58,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:58,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353542457] [2020-12-22 06:01:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:58,123 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 06:01:58,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353542457] [2020-12-22 06:01:58,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:58,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:58,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949813736] [2020-12-22 06:01:58,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:58,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:58,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:58,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:58,126 INFO L87 Difference]: Start difference. First operand 6119 states and 11458 transitions. Second operand 3 states. [2020-12-22 06:01:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:58,794 INFO L93 Difference]: Finished difference Result 8976 states and 16785 transitions. [2020-12-22 06:01:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:58,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:01:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:58,806 INFO L225 Difference]: With dead ends: 8976 [2020-12-22 06:01:58,806 INFO L226 Difference]: Without dead ends: 6264 [2020-12-22 06:01:58,811 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 06:01:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2020-12-22 06:01:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 6231. [2020-12-22 06:01:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6231 states. [2020-12-22 06:01:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6231 states to 6231 states and 11589 transitions. [2020-12-22 06:01:59,151 INFO L78 Accepts]: Start accepts. Automaton has 6231 states and 11589 transitions. Word has length 80 [2020-12-22 06:01:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:59,152 INFO L481 AbstractCegarLoop]: Abstraction has 6231 states and 11589 transitions. [2020-12-22 06:01:59,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6231 states and 11589 transitions. [2020-12-22 06:01:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:01:59,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:59,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:59,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:01:59,155 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash -822267008, now seen corresponding path program 1 times [2020-12-22 06:01:59,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:59,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487903589] [2020-12-22 06:01:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:59,254 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 06:01:59,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487903589] [2020-12-22 06:01:59,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:59,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:59,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729789655] [2020-12-22 06:01:59,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:59,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:59,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:59,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:59,256 INFO L87 Difference]: Start difference. First operand 6231 states and 11589 transitions. Second operand 4 states. [2020-12-22 06:02:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:00,154 INFO L93 Difference]: Finished difference Result 13610 states and 25329 transitions. [2020-12-22 06:02:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:00,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 06:02:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:00,175 INFO L225 Difference]: With dead ends: 13610 [2020-12-22 06:02:00,175 INFO L226 Difference]: Without dead ends: 10965 [2020-12-22 06:02:00,182 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 06:02:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10965 states. [2020-12-22 06:02:00,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10965 to 8767. [2020-12-22 06:02:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8767 states. [2020-12-22 06:02:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 16322 transitions. [2020-12-22 06:02:00,677 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 16322 transitions. Word has length 81 [2020-12-22 06:02:00,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:00,677 INFO L481 AbstractCegarLoop]: Abstraction has 8767 states and 16322 transitions. [2020-12-22 06:02:00,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:00,677 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 16322 transitions. [2020-12-22 06:02:00,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:02:00,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:00,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:00,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:02:00,681 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash -399565182, now seen corresponding path program 1 times [2020-12-22 06:02:00,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:00,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197219625] [2020-12-22 06:02:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:00,764 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 06:02:00,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197219625] [2020-12-22 06:02:00,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:00,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:00,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78382703] [2020-12-22 06:02:00,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:00,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:00,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:00,766 INFO L87 Difference]: Start difference. First operand 8767 states and 16322 transitions. Second operand 3 states. [2020-12-22 06:02:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:01,410 INFO L93 Difference]: Finished difference Result 15860 states and 29552 transitions. [2020-12-22 06:02:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:01,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:02:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:01,427 INFO L225 Difference]: With dead ends: 15860 [2020-12-22 06:02:01,427 INFO L226 Difference]: Without dead ends: 8745 [2020-12-22 06:02:01,438 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 06:02:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8745 states. [2020-12-22 06:02:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8745 to 8745. [2020-12-22 06:02:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8745 states. [2020-12-22 06:02:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8745 states to 8745 states and 16280 transitions. [2020-12-22 06:02:02,059 INFO L78 Accepts]: Start accepts. Automaton has 8745 states and 16280 transitions. Word has length 81 [2020-12-22 06:02:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:02,059 INFO L481 AbstractCegarLoop]: Abstraction has 8745 states and 16280 transitions. [2020-12-22 06:02:02,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 8745 states and 16280 transitions. [2020-12-22 06:02:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:02:02,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:02,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:02,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:02:02,062 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:02,062 INFO L82 PathProgramCache]: Analyzing trace with hash -619915260, now seen corresponding path program 1 times [2020-12-22 06:02:02,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:02,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939118935] [2020-12-22 06:02:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:02,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939118935] [2020-12-22 06:02:02,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:02,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:02,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208392210] [2020-12-22 06:02:02,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:02,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:02,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:02,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:02,148 INFO L87 Difference]: Start difference. First operand 8745 states and 16280 transitions. Second operand 5 states. [2020-12-22 06:02:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:04,491 INFO L93 Difference]: Finished difference Result 35930 states and 66670 transitions. [2020-12-22 06:02:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:04,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 06:02:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:04,533 INFO L225 Difference]: With dead ends: 35930 [2020-12-22 06:02:04,533 INFO L226 Difference]: Without dead ends: 30875 [2020-12-22 06:02:04,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:02:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30875 states. [2020-12-22 06:02:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30875 to 10674. [2020-12-22 06:02:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10674 states. [2020-12-22 06:02:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10674 states to 10674 states and 19707 transitions. [2020-12-22 06:02:05,273 INFO L78 Accepts]: Start accepts. Automaton has 10674 states and 19707 transitions. Word has length 83 [2020-12-22 06:02:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:05,273 INFO L481 AbstractCegarLoop]: Abstraction has 10674 states and 19707 transitions. [2020-12-22 06:02:05,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 10674 states and 19707 transitions. [2020-12-22 06:02:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:02:05,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:05,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:05,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:02:05,276 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:05,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:05,277 INFO L82 PathProgramCache]: Analyzing trace with hash -935222910, now seen corresponding path program 1 times [2020-12-22 06:02:05,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:05,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493991776] [2020-12-22 06:02:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:05,375 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 06:02:05,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493991776] [2020-12-22 06:02:05,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:05,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:05,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871826677] [2020-12-22 06:02:05,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:05,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:05,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:05,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:05,377 INFO L87 Difference]: Start difference. First operand 10674 states and 19707 transitions. Second operand 5 states. [2020-12-22 06:02:06,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:06,695 INFO L93 Difference]: Finished difference Result 17564 states and 32452 transitions. [2020-12-22 06:02:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:06,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 06:02:06,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:06,725 INFO L225 Difference]: With dead ends: 17564 [2020-12-22 06:02:06,725 INFO L226 Difference]: Without dead ends: 17551 [2020-12-22 06:02:06,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17551 states. [2020-12-22 06:02:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17551 to 10692. [2020-12-22 06:02:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10692 states. [2020-12-22 06:02:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 19725 transitions. [2020-12-22 06:02:07,488 INFO L78 Accepts]: Start accepts. Automaton has 10692 states and 19725 transitions. Word has length 83 [2020-12-22 06:02:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:07,489 INFO L481 AbstractCegarLoop]: Abstraction has 10692 states and 19725 transitions. [2020-12-22 06:02:07,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:07,489 INFO L276 IsEmpty]: Start isEmpty. Operand 10692 states and 19725 transitions. [2020-12-22 06:02:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:02:07,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:07,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:07,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:02:07,492 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1660473767, now seen corresponding path program 1 times [2020-12-22 06:02:07,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:07,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428869821] [2020-12-22 06:02:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:07,569 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 06:02:07,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428869821] [2020-12-22 06:02:07,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:07,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:07,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856931433] [2020-12-22 06:02:07,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:07,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:07,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:07,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:07,572 INFO L87 Difference]: Start difference. First operand 10692 states and 19725 transitions. Second operand 6 states. [2020-12-22 06:02:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:08,349 INFO L93 Difference]: Finished difference Result 10711 states and 19743 transitions. [2020-12-22 06:02:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:08,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 06:02:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:08,363 INFO L225 Difference]: With dead ends: 10711 [2020-12-22 06:02:08,364 INFO L226 Difference]: Without dead ends: 10698 [2020-12-22 06:02:08,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:02:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2020-12-22 06:02:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 10692. [2020-12-22 06:02:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10692 states. [2020-12-22 06:02:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 19715 transitions. [2020-12-22 06:02:09,161 INFO L78 Accepts]: Start accepts. Automaton has 10692 states and 19715 transitions. Word has length 85 [2020-12-22 06:02:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:09,161 INFO L481 AbstractCegarLoop]: Abstraction has 10692 states and 19715 transitions. [2020-12-22 06:02:09,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10692 states and 19715 transitions. [2020-12-22 06:02:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:02:09,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:09,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:09,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:02:09,165 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:09,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:09,166 INFO L82 PathProgramCache]: Analyzing trace with hash -999376643, now seen corresponding path program 1 times [2020-12-22 06:02:09,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:09,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97078320] [2020-12-22 06:02:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:09,252 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 06:02:09,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97078320] [2020-12-22 06:02:09,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:09,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:09,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212424711] [2020-12-22 06:02:09,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:09,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:09,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:09,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:09,254 INFO L87 Difference]: Start difference. First operand 10692 states and 19715 transitions. Second operand 5 states. [2020-12-22 06:02:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:12,397 INFO L93 Difference]: Finished difference Result 44641 states and 82197 transitions. [2020-12-22 06:02:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:12,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:02:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:12,444 INFO L225 Difference]: With dead ends: 44641 [2020-12-22 06:02:12,444 INFO L226 Difference]: Without dead ends: 35866 [2020-12-22 06:02:12,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35866 states. [2020-12-22 06:02:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35866 to 10712. [2020-12-22 06:02:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10712 states. [2020-12-22 06:02:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10712 states to 10712 states and 19735 transitions. [2020-12-22 06:02:13,418 INFO L78 Accepts]: Start accepts. Automaton has 10712 states and 19735 transitions. Word has length 92 [2020-12-22 06:02:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:13,419 INFO L481 AbstractCegarLoop]: Abstraction has 10712 states and 19735 transitions. [2020-12-22 06:02:13,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10712 states and 19735 transitions. [2020-12-22 06:02:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:02:13,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:13,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:13,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:02:13,423 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:13,423 INFO L82 PathProgramCache]: Analyzing trace with hash -91863215, now seen corresponding path program 1 times [2020-12-22 06:02:13,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:13,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075597296] [2020-12-22 06:02:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:13,483 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 06:02:13,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075597296] [2020-12-22 06:02:13,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:13,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:13,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984088729] [2020-12-22 06:02:13,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:13,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:13,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:13,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:13,485 INFO L87 Difference]: Start difference. First operand 10712 states and 19735 transitions. Second operand 3 states. [2020-12-22 06:02:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:15,408 INFO L93 Difference]: Finished difference Result 28496 states and 52424 transitions. [2020-12-22 06:02:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:15,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 06:02:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:15,436 INFO L225 Difference]: With dead ends: 28496 [2020-12-22 06:02:15,436 INFO L226 Difference]: Without dead ends: 19701 [2020-12-22 06:02:15,445 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 06:02:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19701 states. [2020-12-22 06:02:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19701 to 10524. [2020-12-22 06:02:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10524 states. [2020-12-22 06:02:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 19327 transitions. [2020-12-22 06:02:16,247 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 19327 transitions. Word has length 93 [2020-12-22 06:02:16,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:16,247 INFO L481 AbstractCegarLoop]: Abstraction has 10524 states and 19327 transitions. [2020-12-22 06:02:16,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 19327 transitions. [2020-12-22 06:02:16,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 06:02:16,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:16,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:16,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:02:16,251 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:16,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1147808795, now seen corresponding path program 1 times [2020-12-22 06:02:16,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:16,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285305771] [2020-12-22 06:02:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:16,324 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 06:02:16,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285305771] [2020-12-22 06:02:16,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:16,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:16,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793706869] [2020-12-22 06:02:16,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:16,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:16,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:16,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:16,327 INFO L87 Difference]: Start difference. First operand 10524 states and 19327 transitions. Second operand 5 states. [2020-12-22 06:02:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:18,128 INFO L93 Difference]: Finished difference Result 28191 states and 51834 transitions. [2020-12-22 06:02:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:18,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-12-22 06:02:18,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:18,153 INFO L225 Difference]: With dead ends: 28191 [2020-12-22 06:02:18,153 INFO L226 Difference]: Without dead ends: 19242 [2020-12-22 06:02:18,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19242 states. [2020-12-22 06:02:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19242 to 10524. [2020-12-22 06:02:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10524 states. [2020-12-22 06:02:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 19115 transitions. [2020-12-22 06:02:19,003 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 19115 transitions. Word has length 96 [2020-12-22 06:02:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:19,003 INFO L481 AbstractCegarLoop]: Abstraction has 10524 states and 19115 transitions. [2020-12-22 06:02:19,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:19,004 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 19115 transitions. [2020-12-22 06:02:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:02:19,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:19,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:19,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:02:19,007 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:19,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1920394802, now seen corresponding path program 1 times [2020-12-22 06:02:19,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:19,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32532000] [2020-12-22 06:02:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:19,157 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 06:02:19,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32532000] [2020-12-22 06:02:19,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:19,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:02:19,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591639465] [2020-12-22 06:02:19,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:02:19,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:19,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:02:19,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:19,159 INFO L87 Difference]: Start difference. First operand 10524 states and 19115 transitions. Second operand 7 states. [2020-12-22 06:02:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:20,366 INFO L93 Difference]: Finished difference Result 16766 states and 30518 transitions. [2020-12-22 06:02:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:20,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-12-22 06:02:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:20,387 INFO L225 Difference]: With dead ends: 16766 [2020-12-22 06:02:20,388 INFO L226 Difference]: Without dead ends: 16753 [2020-12-22 06:02:20,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:02:20,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16753 states. [2020-12-22 06:02:21,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16753 to 10539. [2020-12-22 06:02:21,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10539 states. [2020-12-22 06:02:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10539 states to 10539 states and 19125 transitions. [2020-12-22 06:02:21,236 INFO L78 Accepts]: Start accepts. Automaton has 10539 states and 19125 transitions. Word has length 97 [2020-12-22 06:02:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:21,236 INFO L481 AbstractCegarLoop]: Abstraction has 10539 states and 19125 transitions. [2020-12-22 06:02:21,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:02:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10539 states and 19125 transitions. [2020-12-22 06:02:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 06:02:21,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:21,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:21,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:02:21,241 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:21,242 INFO L82 PathProgramCache]: Analyzing trace with hash -65706862, now seen corresponding path program 1 times [2020-12-22 06:02:21,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:21,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145722053] [2020-12-22 06:02:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:21,334 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 06:02:21,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145722053] [2020-12-22 06:02:21,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:21,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:21,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973710145] [2020-12-22 06:02:21,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:21,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:21,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:21,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:21,336 INFO L87 Difference]: Start difference. First operand 10539 states and 19125 transitions. Second operand 5 states. [2020-12-22 06:02:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:25,248 INFO L93 Difference]: Finished difference Result 53946 states and 98751 transitions. [2020-12-22 06:02:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:25,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-12-22 06:02:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:25,308 INFO L225 Difference]: With dead ends: 53946 [2020-12-22 06:02:25,308 INFO L226 Difference]: Without dead ends: 45324 [2020-12-22 06:02:25,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:02:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45324 states. [2020-12-22 06:02:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45324 to 21042. [2020-12-22 06:02:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21042 states. [2020-12-22 06:02:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21042 states to 21042 states and 38206 transitions. [2020-12-22 06:02:27,192 INFO L78 Accepts]: Start accepts. Automaton has 21042 states and 38206 transitions. Word has length 113 [2020-12-22 06:02:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:27,192 INFO L481 AbstractCegarLoop]: Abstraction has 21042 states and 38206 transitions. [2020-12-22 06:02:27,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 21042 states and 38206 transitions. [2020-12-22 06:02:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 06:02:27,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:27,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:27,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:02:27,201 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:27,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1104343346, now seen corresponding path program 1 times [2020-12-22 06:02:27,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:27,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876172449] [2020-12-22 06:02:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:27,300 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 06:02:27,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876172449] [2020-12-22 06:02:27,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:27,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:27,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189222153] [2020-12-22 06:02:27,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:27,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:27,302 INFO L87 Difference]: Start difference. First operand 21042 states and 38206 transitions. Second operand 3 states. [2020-12-22 06:02:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:31,080 INFO L93 Difference]: Finished difference Result 49943 states and 90465 transitions. [2020-12-22 06:02:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:31,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-12-22 06:02:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:31,130 INFO L225 Difference]: With dead ends: 49943 [2020-12-22 06:02:31,130 INFO L226 Difference]: Without dead ends: 32006 [2020-12-22 06:02:31,162 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 06:02:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32006 states. [2020-12-22 06:02:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32006 to 20574. [2020-12-22 06:02:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20574 states. [2020-12-22 06:02:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20574 states to 20574 states and 37209 transitions. [2020-12-22 06:02:32,957 INFO L78 Accepts]: Start accepts. Automaton has 20574 states and 37209 transitions. Word has length 114 [2020-12-22 06:02:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:32,958 INFO L481 AbstractCegarLoop]: Abstraction has 20574 states and 37209 transitions. [2020-12-22 06:02:32,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 20574 states and 37209 transitions. [2020-12-22 06:02:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 06:02:33,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:33,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:33,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:02:33,040 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:33,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:33,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1444272932, now seen corresponding path program 1 times [2020-12-22 06:02:33,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:33,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357259150] [2020-12-22 06:02:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:33,116 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 06:02:33,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357259150] [2020-12-22 06:02:33,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:33,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:33,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24442888] [2020-12-22 06:02:33,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:33,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:33,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:33,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:33,123 INFO L87 Difference]: Start difference. First operand 20574 states and 37209 transitions. Second operand 5 states. [2020-12-22 06:02:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:34,852 INFO L93 Difference]: Finished difference Result 30244 states and 54789 transitions. [2020-12-22 06:02:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:34,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-12-22 06:02:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:34,875 INFO L225 Difference]: With dead ends: 30244 [2020-12-22 06:02:34,875 INFO L226 Difference]: Without dead ends: 19894 [2020-12-22 06:02:34,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19894 states. [2020-12-22 06:02:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19894 to 19894. [2020-12-22 06:02:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19894 states. [2020-12-22 06:02:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19894 states to 19894 states and 36070 transitions. [2020-12-22 06:02:36,481 INFO L78 Accepts]: Start accepts. Automaton has 19894 states and 36070 transitions. Word has length 114 [2020-12-22 06:02:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:36,481 INFO L481 AbstractCegarLoop]: Abstraction has 19894 states and 36070 transitions. [2020-12-22 06:02:36,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 19894 states and 36070 transitions. [2020-12-22 06:02:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 06:02:36,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:36,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:36,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:02:36,490 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash -678744601, now seen corresponding path program 1 times [2020-12-22 06:02:36,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:36,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059860449] [2020-12-22 06:02:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:36,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059860449] [2020-12-22 06:02:36,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:36,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:36,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646045023] [2020-12-22 06:02:36,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:36,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:36,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:36,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:36,590 INFO L87 Difference]: Start difference. First operand 19894 states and 36070 transitions. Second operand 6 states. [2020-12-22 06:02:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:42,697 INFO L93 Difference]: Finished difference Result 59145 states and 107604 transitions. [2020-12-22 06:02:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:02:42,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-12-22 06:02:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:42,760 INFO L225 Difference]: With dead ends: 59145 [2020-12-22 06:02:42,760 INFO L226 Difference]: Without dead ends: 41960 [2020-12-22 06:02:42,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:02:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41960 states. [2020-12-22 06:02:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41960 to 27494. [2020-12-22 06:02:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27494 states. [2020-12-22 06:02:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27494 states to 27494 states and 49839 transitions. [2020-12-22 06:02:45,426 INFO L78 Accepts]: Start accepts. Automaton has 27494 states and 49839 transitions. Word has length 128 [2020-12-22 06:02:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:45,426 INFO L481 AbstractCegarLoop]: Abstraction has 27494 states and 49839 transitions. [2020-12-22 06:02:45,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 27494 states and 49839 transitions. [2020-12-22 06:02:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 06:02:45,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:45,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:45,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:02:45,437 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:45,437 INFO L82 PathProgramCache]: Analyzing trace with hash 209028645, now seen corresponding path program 1 times [2020-12-22 06:02:45,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:45,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895746345] [2020-12-22 06:02:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:02:45,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895746345] [2020-12-22 06:02:45,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:45,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:45,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943795379] [2020-12-22 06:02:45,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:45,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:45,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:45,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:45,508 INFO L87 Difference]: Start difference. First operand 27494 states and 49839 transitions. Second operand 3 states. [2020-12-22 06:02:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:47,197 INFO L93 Difference]: Finished difference Result 45368 states and 82443 transitions. [2020-12-22 06:02:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:47,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-22 06:02:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:47,231 INFO L225 Difference]: With dead ends: 45368 [2020-12-22 06:02:47,231 INFO L226 Difference]: Without dead ends: 24672 [2020-12-22 06:02:47,249 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 06:02:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24672 states. [2020-12-22 06:02:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24672 to 24659. [2020-12-22 06:02:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24659 states. [2020-12-22 06:02:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24659 states to 24659 states and 45155 transitions. [2020-12-22 06:02:49,317 INFO L78 Accepts]: Start accepts. Automaton has 24659 states and 45155 transitions. Word has length 128 [2020-12-22 06:02:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:49,318 INFO L481 AbstractCegarLoop]: Abstraction has 24659 states and 45155 transitions. [2020-12-22 06:02:49,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 24659 states and 45155 transitions. [2020-12-22 06:02:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 06:02:49,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:49,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:49,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:02:49,333 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:49,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:49,333 INFO L82 PathProgramCache]: Analyzing trace with hash 700939106, now seen corresponding path program 1 times [2020-12-22 06:02:49,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:49,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048913651] [2020-12-22 06:02:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:02:49,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048913651] [2020-12-22 06:02:49,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:49,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:49,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653993266] [2020-12-22 06:02:49,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:49,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:49,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:49,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:49,437 INFO L87 Difference]: Start difference. First operand 24659 states and 45155 transitions. Second operand 5 states. [2020-12-22 06:02:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:53,199 INFO L93 Difference]: Finished difference Result 67148 states and 122874 transitions. [2020-12-22 06:02:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:53,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-12-22 06:02:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:53,265 INFO L225 Difference]: With dead ends: 67148 [2020-12-22 06:02:53,265 INFO L226 Difference]: Without dead ends: 49243 [2020-12-22 06:02:53,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49243 states. [2020-12-22 06:02:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49243 to 49243. [2020-12-22 06:02:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49243 states. [2020-12-22 06:02:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49243 states to 49243 states and 90205 transitions. [2020-12-22 06:02:57,107 INFO L78 Accepts]: Start accepts. Automaton has 49243 states and 90205 transitions. Word has length 129 [2020-12-22 06:02:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:57,108 INFO L481 AbstractCegarLoop]: Abstraction has 49243 states and 90205 transitions. [2020-12-22 06:02:57,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 49243 states and 90205 transitions. [2020-12-22 06:02:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 06:02:57,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:57,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:57,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:02:57,125 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash 970353384, now seen corresponding path program 1 times [2020-12-22 06:02:57,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:57,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004018314] [2020-12-22 06:02:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:57,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004018314] [2020-12-22 06:02:57,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:57,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:57,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119742628] [2020-12-22 06:02:57,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:57,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:57,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:57,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:57,256 INFO L87 Difference]: Start difference. First operand 49243 states and 90205 transitions. Second operand 6 states. [2020-12-22 06:03:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:06,400 INFO L93 Difference]: Finished difference Result 130665 states and 239177 transitions. [2020-12-22 06:03:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:03:06,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-12-22 06:03:06,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:06,543 INFO L225 Difference]: With dead ends: 130665 [2020-12-22 06:03:06,543 INFO L226 Difference]: Without dead ends: 86798 [2020-12-22 06:03:06,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:03:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86798 states. [2020-12-22 06:03:11,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86798 to 64391. [2020-12-22 06:03:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64391 states. [2020-12-22 06:03:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64391 states to 64391 states and 117889 transitions. [2020-12-22 06:03:11,794 INFO L78 Accepts]: Start accepts. Automaton has 64391 states and 117889 transitions. Word has length 129 [2020-12-22 06:03:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:11,794 INFO L481 AbstractCegarLoop]: Abstraction has 64391 states and 117889 transitions. [2020-12-22 06:03:11,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 64391 states and 117889 transitions. [2020-12-22 06:03:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 06:03:11,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:11,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:03:11,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:03:11,808 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash 22971687, now seen corresponding path program 1 times [2020-12-22 06:03:11,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:11,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720294687] [2020-12-22 06:03:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:03:11,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720294687] [2020-12-22 06:03:11,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:11,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:11,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724766056] [2020-12-22 06:03:11,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:11,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:11,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:11,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:11,892 INFO L87 Difference]: Start difference. First operand 64391 states and 117889 transitions. Second operand 5 states. [2020-12-22 06:03:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:21,002 INFO L93 Difference]: Finished difference Result 179567 states and 328578 transitions. [2020-12-22 06:03:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:21,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-12-22 06:03:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:21,218 INFO L225 Difference]: With dead ends: 179567 [2020-12-22 06:03:21,218 INFO L226 Difference]: Without dead ends: 128652 [2020-12-22 06:03:21,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128652 states. [2020-12-22 06:03:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128652 to 128648. [2020-12-22 06:03:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128648 states. [2020-12-22 06:03:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128648 states to 128648 states and 235564 transitions. [2020-12-22 06:03:31,483 INFO L78 Accepts]: Start accepts. Automaton has 128648 states and 235564 transitions. Word has length 130 [2020-12-22 06:03:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:31,500 INFO L481 AbstractCegarLoop]: Abstraction has 128648 states and 235564 transitions. [2020-12-22 06:03:31,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 128648 states and 235564 transitions. [2020-12-22 06:03:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 06:03:31,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:31,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:03:31,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:03:31,539 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:31,539 INFO L82 PathProgramCache]: Analyzing trace with hash 249640898, now seen corresponding path program 1 times [2020-12-22 06:03:31,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:31,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482193936] [2020-12-22 06:03:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:03:31,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482193936] [2020-12-22 06:03:31,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:31,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:31,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783775964] [2020-12-22 06:03:31,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:31,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:31,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:31,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:31,630 INFO L87 Difference]: Start difference. First operand 128648 states and 235564 transitions. Second operand 5 states. [2020-12-22 06:03:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:51,456 INFO L93 Difference]: Finished difference Result 367378 states and 672268 transitions. [2020-12-22 06:03:51,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:51,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-12-22 06:03:51,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:52,083 INFO L225 Difference]: With dead ends: 367378 [2020-12-22 06:03:52,083 INFO L226 Difference]: Without dead ends: 265744 [2020-12-22 06:03:52,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:03:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265744 states. [2020-12-22 06:04:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265744 to 128648. [2020-12-22 06:04:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128648 states. [2020-12-22 06:04:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128648 states to 128648 states and 235544 transitions. [2020-12-22 06:04:03,745 INFO L78 Accepts]: Start accepts. Automaton has 128648 states and 235544 transitions. Word has length 130 [2020-12-22 06:04:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:03,745 INFO L481 AbstractCegarLoop]: Abstraction has 128648 states and 235544 transitions. [2020-12-22 06:04:03,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 128648 states and 235544 transitions. [2020-12-22 06:04:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 06:04:03,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:03,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:04:03,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:04:03,803 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:03,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:03,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1183720511, now seen corresponding path program 1 times [2020-12-22 06:04:03,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:03,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634962048] [2020-12-22 06:04:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:03,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634962048] [2020-12-22 06:04:03,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:03,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:04:03,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483988052] [2020-12-22 06:04:03,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:04:03,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:03,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:04:03,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:04:03,902 INFO L87 Difference]: Start difference. First operand 128648 states and 235544 transitions. Second operand 6 states.