/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_spec2_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:04:34,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:04:34,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:04:34,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:04:34,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:04:34,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:04:34,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:04:34,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:04:34,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:04:35,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:04:35,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:04:35,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:04:35,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:04:35,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:04:35,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:04:35,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:04:35,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:04:35,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:04:35,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:04:35,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:04:35,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:04:35,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:04:35,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:04:35,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:04:35,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:04:35,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:04:35,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:04:35,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:04:35,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:04:35,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:04:35,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:04:35,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:04:35,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:04:35,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:04:35,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:04:35,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:04:35,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:04:35,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:04:35,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:04:35,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:04:35,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:04:35,149 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:04:35,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:04:35,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:04:35,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:04:35,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:04:35,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:04:35,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:04:35,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:04:35,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:04:35,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:04:35,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:04:35,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:04:35,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:04:35,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:04:35,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:04:35,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:04:35,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:04:35,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:04:35,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:04:35,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:04:35,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:04:35,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:04:35,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:04:35,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:04:35,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:04:35,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:04:35,641 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:04:35,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2020-12-22 06:04:35,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c388657d/ddd86fe26bd0460480a640aa54550ec7/FLAG40d45590a [2020-12-22 06:04:36,513 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:04:36,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2020-12-22 06:04:36,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c388657d/ddd86fe26bd0460480a640aa54550ec7/FLAG40d45590a [2020-12-22 06:04:36,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c388657d/ddd86fe26bd0460480a640aa54550ec7 [2020-12-22 06:04:36,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:04:36,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:04:36,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:04:36,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:04:36,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:04:36,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:04:36" (1/1) ... [2020-12-22 06:04:36,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bca1d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:36, skipping insertion in model container [2020-12-22 06:04:36,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:04:36" (1/1) ... [2020-12-22 06:04:36,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:04:36,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:04:37,393 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_spec2_product19.cil.c[34129,34142] [2020-12-22 06:04:37,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:04:37,678 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:04:37,784 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_spec2_product19.cil.c[34129,34142] [2020-12-22 06:04:37,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:04:37,954 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:04:37,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37 WrapperNode [2020-12-22 06:04:37,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:04:37,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:04:37,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:04:37,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:04:37,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:04:38,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:04:38,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:04:38,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:04:38,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (1/1) ... [2020-12-22 06:04:38,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:04:38,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:04:38,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:04:38,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:04:38,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (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 06:04:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:04:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:04:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:04:38,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:04:45,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:04:45,139 INFO L299 CfgBuilder]: Removed 613 assume(true) statements. [2020-12-22 06:04:45,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:04:45 BoogieIcfgContainer [2020-12-22 06:04:45,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:04:45,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:04:45,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:04:45,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:04:45,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:04:36" (1/3) ... [2020-12-22 06:04:45,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189540aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:04:45, skipping insertion in model container [2020-12-22 06:04:45,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:04:37" (2/3) ... [2020-12-22 06:04:45,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189540aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:04:45, skipping insertion in model container [2020-12-22 06:04:45,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:04:45" (3/3) ... [2020-12-22 06:04:45,154 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2020-12-22 06:04:45,161 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:04:45,167 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:04:45,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:04:45,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:04:45,229 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:04:45,229 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:04:45,229 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:04:45,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:04:45,230 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:04:45,230 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:04:45,230 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:04:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states. [2020-12-22 06:04:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:04:45,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:45,303 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] [2020-12-22 06:04:45,304 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 06:04:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:45,311 INFO L82 PathProgramCache]: Analyzing trace with hash 793828150, now seen corresponding path program 1 times [2020-12-22 06:04:45,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:45,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694631777] [2020-12-22 06:04:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:45,761 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 06:04:45,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694631777] [2020-12-22 06:04:45,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:45,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:45,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146453832] [2020-12-22 06:04:45,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:04:45,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:04:45,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:04:45,790 INFO L87 Difference]: Start difference. First operand 2496 states. Second operand 3 states. [2020-12-22 06:04:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:46,082 INFO L93 Difference]: Finished difference Result 4983 states and 9381 transitions. [2020-12-22 06:04:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:04:46,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:04:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:46,144 INFO L225 Difference]: With dead ends: 4983 [2020-12-22 06:04:46,145 INFO L226 Difference]: Without dead ends: 2492 [2020-12-22 06:04:46,155 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 06:04:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2020-12-22 06:04:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2020-12-22 06:04:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2492 states. [2020-12-22 06:04:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4681 transitions. [2020-12-22 06:04:46,342 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4681 transitions. Word has length 44 [2020-12-22 06:04:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:46,342 INFO L481 AbstractCegarLoop]: Abstraction has 2492 states and 4681 transitions. [2020-12-22 06:04:46,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:04:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4681 transitions. [2020-12-22 06:04:46,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:04:46,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:46,348 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] [2020-12-22 06:04:46,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:04:46,350 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 06:04:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:46,352 INFO L82 PathProgramCache]: Analyzing trace with hash -248118129, now seen corresponding path program 1 times [2020-12-22 06:04:46,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:46,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305788201] [2020-12-22 06:04:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:46,552 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 06:04:46,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305788201] [2020-12-22 06:04:46,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:46,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:04:46,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047542056] [2020-12-22 06:04:46,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:04:46,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:46,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:04:46,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:04:46,562 INFO L87 Difference]: Start difference. First operand 2492 states and 4681 transitions. Second operand 6 states. [2020-12-22 06:04:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:46,861 INFO L93 Difference]: Finished difference Result 4935 states and 9278 transitions. [2020-12-22 06:04:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:04:46,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 06:04:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:46,878 INFO L225 Difference]: With dead ends: 4935 [2020-12-22 06:04:46,879 INFO L226 Difference]: Without dead ends: 2486 [2020-12-22 06:04:46,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 06:04:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2020-12-22 06:04:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2020-12-22 06:04:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-12-22 06:04:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4668 transitions. [2020-12-22 06:04:46,997 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4668 transitions. Word has length 51 [2020-12-22 06:04:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:46,998 INFO L481 AbstractCegarLoop]: Abstraction has 2486 states and 4668 transitions. [2020-12-22 06:04:46,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:04:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4668 transitions. [2020-12-22 06:04:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:04:47,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:47,005 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] [2020-12-22 06:04:47,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:04:47,008 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 06:04:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash -560000463, now seen corresponding path program 1 times [2020-12-22 06:04:47,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:47,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046547158] [2020-12-22 06:04:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:47,134 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 06:04:47,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046547158] [2020-12-22 06:04:47,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:47,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:47,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305404376] [2020-12-22 06:04:47,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:47,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:47,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:47,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:47,138 INFO L87 Difference]: Start difference. First operand 2486 states and 4668 transitions. Second operand 4 states. [2020-12-22 06:04:47,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:47,363 INFO L93 Difference]: Finished difference Result 4929 states and 9265 transitions. [2020-12-22 06:04:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:47,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:04:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:47,379 INFO L225 Difference]: With dead ends: 4929 [2020-12-22 06:04:47,380 INFO L226 Difference]: Without dead ends: 2486 [2020-12-22 06:04:47,385 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 06:04:47,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2020-12-22 06:04:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2020-12-22 06:04:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-12-22 06:04:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4664 transitions. [2020-12-22 06:04:47,499 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4664 transitions. Word has length 52 [2020-12-22 06:04:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:47,507 INFO L481 AbstractCegarLoop]: Abstraction has 2486 states and 4664 transitions. [2020-12-22 06:04:47,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4664 transitions. [2020-12-22 06:04:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:04:47,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:47,512 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] [2020-12-22 06:04:47,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:04:47,513 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 06:04:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash -157612660, now seen corresponding path program 1 times [2020-12-22 06:04:47,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:47,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242861681] [2020-12-22 06:04:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:47,731 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 06:04:47,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242861681] [2020-12-22 06:04:47,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:47,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:47,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944232453] [2020-12-22 06:04:47,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:47,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:47,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:47,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:47,737 INFO L87 Difference]: Start difference. First operand 2486 states and 4664 transitions. Second operand 4 states. [2020-12-22 06:04:47,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:47,937 INFO L93 Difference]: Finished difference Result 4929 states and 9261 transitions. [2020-12-22 06:04:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:47,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:04:47,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:47,953 INFO L225 Difference]: With dead ends: 4929 [2020-12-22 06:04:47,953 INFO L226 Difference]: Without dead ends: 2486 [2020-12-22 06:04:47,958 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 06:04:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2020-12-22 06:04:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2020-12-22 06:04:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-12-22 06:04:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4660 transitions. [2020-12-22 06:04:48,057 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4660 transitions. Word has length 53 [2020-12-22 06:04:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:48,059 INFO L481 AbstractCegarLoop]: Abstraction has 2486 states and 4660 transitions. [2020-12-22 06:04:48,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4660 transitions. [2020-12-22 06:04:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:04:48,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:48,063 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 06:04:48,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:04:48,066 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 06:04:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash 593074028, now seen corresponding path program 1 times [2020-12-22 06:04:48,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:48,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010841574] [2020-12-22 06:04:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:48,180 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 06:04:48,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010841574] [2020-12-22 06:04:48,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:48,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:48,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796880096] [2020-12-22 06:04:48,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:48,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:48,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:48,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:48,184 INFO L87 Difference]: Start difference. First operand 2486 states and 4660 transitions. Second operand 4 states. [2020-12-22 06:04:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:48,378 INFO L93 Difference]: Finished difference Result 4929 states and 9257 transitions. [2020-12-22 06:04:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:48,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:04:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:48,394 INFO L225 Difference]: With dead ends: 4929 [2020-12-22 06:04:48,394 INFO L226 Difference]: Without dead ends: 2486 [2020-12-22 06:04:48,399 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 06:04:48,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2020-12-22 06:04:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2020-12-22 06:04:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-12-22 06:04:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4656 transitions. [2020-12-22 06:04:48,494 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4656 transitions. Word has length 54 [2020-12-22 06:04:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:48,494 INFO L481 AbstractCegarLoop]: Abstraction has 2486 states and 4656 transitions. [2020-12-22 06:04:48,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4656 transitions. [2020-12-22 06:04:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:04:48,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:48,499 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 06:04:48,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:04:48,499 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 06:04:48,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:48,500 INFO L82 PathProgramCache]: Analyzing trace with hash -872133908, now seen corresponding path program 1 times [2020-12-22 06:04:48,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:48,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630261521] [2020-12-22 06:04:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:48,604 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 06:04:48,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630261521] [2020-12-22 06:04:48,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:48,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:48,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149338236] [2020-12-22 06:04:48,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:48,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:48,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:48,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:48,607 INFO L87 Difference]: Start difference. First operand 2486 states and 4656 transitions. Second operand 4 states. [2020-12-22 06:04:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:48,735 INFO L93 Difference]: Finished difference Result 4929 states and 9253 transitions. [2020-12-22 06:04:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:48,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:04:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:48,750 INFO L225 Difference]: With dead ends: 4929 [2020-12-22 06:04:48,751 INFO L226 Difference]: Without dead ends: 2465 [2020-12-22 06:04:48,756 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 06:04:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-22 06:04:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-22 06:04:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4622 transitions. [2020-12-22 06:04:48,907 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4622 transitions. Word has length 54 [2020-12-22 06:04:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:48,908 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4622 transitions. [2020-12-22 06:04:48,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4622 transitions. [2020-12-22 06:04:48,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:04:48,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:48,910 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] [2020-12-22 06:04:48,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:04:48,911 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 06:04:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:48,916 INFO L82 PathProgramCache]: Analyzing trace with hash -743875737, now seen corresponding path program 1 times [2020-12-22 06:04:48,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:48,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527833971] [2020-12-22 06:04:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:48,996 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 06:04:48,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527833971] [2020-12-22 06:04:48,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:48,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:48,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804060188] [2020-12-22 06:04:48,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:48,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:48,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:48,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:48,999 INFO L87 Difference]: Start difference. First operand 2465 states and 4622 transitions. Second operand 4 states. [2020-12-22 06:04:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:49,136 INFO L93 Difference]: Finished difference Result 4908 states and 9219 transitions. [2020-12-22 06:04:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:49,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:04:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:49,150 INFO L225 Difference]: With dead ends: 4908 [2020-12-22 06:04:49,151 INFO L226 Difference]: Without dead ends: 2465 [2020-12-22 06:04:49,157 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 06:04:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-22 06:04:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-22 06:04:49,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4621 transitions. [2020-12-22 06:04:49,255 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4621 transitions. Word has length 55 [2020-12-22 06:04:49,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:49,255 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4621 transitions. [2020-12-22 06:04:49,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4621 transitions. [2020-12-22 06:04:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:04:49,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:49,257 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 06:04:49,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:04:49,258 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 06:04:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:49,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1921921191, now seen corresponding path program 1 times [2020-12-22 06:04:49,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:49,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226621626] [2020-12-22 06:04:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:49,349 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 06:04:49,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226621626] [2020-12-22 06:04:49,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:49,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:49,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865609062] [2020-12-22 06:04:49,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:49,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:49,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:49,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:49,352 INFO L87 Difference]: Start difference. First operand 2465 states and 4621 transitions. Second operand 4 states. [2020-12-22 06:04:49,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:49,487 INFO L93 Difference]: Finished difference Result 4908 states and 9218 transitions. [2020-12-22 06:04:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:49,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 06:04:49,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:49,505 INFO L225 Difference]: With dead ends: 4908 [2020-12-22 06:04:49,505 INFO L226 Difference]: Without dead ends: 2465 [2020-12-22 06:04:49,510 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 06:04:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-22 06:04:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-22 06:04:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4620 transitions. [2020-12-22 06:04:49,606 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4620 transitions. Word has length 56 [2020-12-22 06:04:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:49,606 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4620 transitions. [2020-12-22 06:04:49,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4620 transitions. [2020-12-22 06:04:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:04:49,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:49,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:49,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:04:49,609 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 06:04:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash -176153278, now seen corresponding path program 1 times [2020-12-22 06:04:49,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:49,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730984964] [2020-12-22 06:04:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:49,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730984964] [2020-12-22 06:04:49,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:49,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:04:49,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592608985] [2020-12-22 06:04:49,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:04:49,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:04:49,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:04:49,707 INFO L87 Difference]: Start difference. First operand 2465 states and 4620 transitions. Second operand 7 states. [2020-12-22 06:04:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:49,947 INFO L93 Difference]: Finished difference Result 4902 states and 9206 transitions. [2020-12-22 06:04:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:04:49,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-12-22 06:04:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:49,978 INFO L225 Difference]: With dead ends: 4902 [2020-12-22 06:04:49,979 INFO L226 Difference]: Without dead ends: 2465 [2020-12-22 06:04:49,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:04:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2020-12-22 06:04:50,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2020-12-22 06:04:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4619 transitions. [2020-12-22 06:04:50,083 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4619 transitions. Word has length 57 [2020-12-22 06:04:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:50,083 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4619 transitions. [2020-12-22 06:04:50,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:04:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4619 transitions. [2020-12-22 06:04:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:04:50,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:50,086 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 06:04:50,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:04:50,086 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 06:04:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash 364708626, now seen corresponding path program 1 times [2020-12-22 06:04:50,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:50,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837147263] [2020-12-22 06:04:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:50,210 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 06:04:50,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837147263] [2020-12-22 06:04:50,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:50,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:50,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052771138] [2020-12-22 06:04:50,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:50,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:50,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:50,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:50,214 INFO L87 Difference]: Start difference. First operand 2465 states and 4619 transitions. Second operand 4 states. [2020-12-22 06:04:51,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:51,507 INFO L93 Difference]: Finished difference Result 6861 states and 12918 transitions. [2020-12-22 06:04:51,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:51,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:04:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:51,521 INFO L225 Difference]: With dead ends: 6861 [2020-12-22 06:04:51,521 INFO L226 Difference]: Without dead ends: 4430 [2020-12-22 06:04:51,528 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 06:04:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-12-22 06:04:51,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 2465. [2020-12-22 06:04:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4613 transitions. [2020-12-22 06:04:51,687 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4613 transitions. Word has length 58 [2020-12-22 06:04:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:51,687 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4613 transitions. [2020-12-22 06:04:51,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4613 transitions. [2020-12-22 06:04:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:04:51,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:51,690 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 06:04:51,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:04:51,691 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 06:04:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:51,691 INFO L82 PathProgramCache]: Analyzing trace with hash -655602938, now seen corresponding path program 1 times [2020-12-22 06:04:51,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:51,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983186415] [2020-12-22 06:04:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:51,793 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 06:04:51,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983186415] [2020-12-22 06:04:51,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:51,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:51,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371465576] [2020-12-22 06:04:51,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:51,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:51,797 INFO L87 Difference]: Start difference. First operand 2465 states and 4613 transitions. Second operand 4 states. [2020-12-22 06:04:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:53,014 INFO L93 Difference]: Finished difference Result 6861 states and 12907 transitions. [2020-12-22 06:04:53,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:53,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:04:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:53,027 INFO L225 Difference]: With dead ends: 6861 [2020-12-22 06:04:53,027 INFO L226 Difference]: Without dead ends: 4430 [2020-12-22 06:04:53,034 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 06:04:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-12-22 06:04:53,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 2465. [2020-12-22 06:04:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4607 transitions. [2020-12-22 06:04:53,152 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4607 transitions. Word has length 60 [2020-12-22 06:04:53,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:53,152 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4607 transitions. [2020-12-22 06:04:53,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4607 transitions. [2020-12-22 06:04:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:04:53,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:53,155 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] [2020-12-22 06:04:53,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:04:53,155 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 06:04:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash 843286856, now seen corresponding path program 1 times [2020-12-22 06:04:53,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:53,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752886302] [2020-12-22 06:04:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:53,232 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 06:04:53,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752886302] [2020-12-22 06:04:53,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:53,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:53,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270513504] [2020-12-22 06:04:53,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:53,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:53,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:53,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:53,234 INFO L87 Difference]: Start difference. First operand 2465 states and 4607 transitions. Second operand 4 states. [2020-12-22 06:04:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:54,391 INFO L93 Difference]: Finished difference Result 6861 states and 12896 transitions. [2020-12-22 06:04:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:54,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:04:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:54,409 INFO L225 Difference]: With dead ends: 6861 [2020-12-22 06:04:54,409 INFO L226 Difference]: Without dead ends: 4430 [2020-12-22 06:04:54,414 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 06:04:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-12-22 06:04:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 2465. [2020-12-22 06:04:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4601 transitions. [2020-12-22 06:04:54,550 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4601 transitions. Word has length 62 [2020-12-22 06:04:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:54,551 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4601 transitions. [2020-12-22 06:04:54,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4601 transitions. [2020-12-22 06:04:54,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:04:54,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:54,556 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] [2020-12-22 06:04:54,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:04:54,557 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 06:04:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:54,559 INFO L82 PathProgramCache]: Analyzing trace with hash 241191526, now seen corresponding path program 1 times [2020-12-22 06:04:54,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:54,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824215562] [2020-12-22 06:04:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:54,681 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 06:04:54,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824215562] [2020-12-22 06:04:54,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:54,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:54,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548314553] [2020-12-22 06:04:54,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:54,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:54,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:54,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:54,683 INFO L87 Difference]: Start difference. First operand 2465 states and 4601 transitions. Second operand 4 states. [2020-12-22 06:04:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:55,842 INFO L93 Difference]: Finished difference Result 6861 states and 12885 transitions. [2020-12-22 06:04:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:55,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:04:55,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:55,854 INFO L225 Difference]: With dead ends: 6861 [2020-12-22 06:04:55,855 INFO L226 Difference]: Without dead ends: 4430 [2020-12-22 06:04:55,860 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 06:04:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2020-12-22 06:04:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 2465. [2020-12-22 06:04:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 06:04:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 4595 transitions. [2020-12-22 06:04:55,972 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 4595 transitions. Word has length 64 [2020-12-22 06:04:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:55,973 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 4595 transitions. [2020-12-22 06:04:55,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 4595 transitions. [2020-12-22 06:04:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:04:55,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:55,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:55,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:04:55,976 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 06:04:55,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:55,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1170985470, now seen corresponding path program 1 times [2020-12-22 06:04:55,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:55,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891424616] [2020-12-22 06:04:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:56,075 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 06:04:56,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891424616] [2020-12-22 06:04:56,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:56,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:56,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089245844] [2020-12-22 06:04:56,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:04:56,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:56,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:04:56,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:04:56,077 INFO L87 Difference]: Start difference. First operand 2465 states and 4595 transitions. Second operand 6 states. [2020-12-22 06:04:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:59,582 INFO L93 Difference]: Finished difference Result 26682 states and 50017 transitions. [2020-12-22 06:04:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:04:59,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 06:04:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:59,652 INFO L225 Difference]: With dead ends: 26682 [2020-12-22 06:04:59,652 INFO L226 Difference]: Without dead ends: 24269 [2020-12-22 06:04:59,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:04:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24269 states. [2020-12-22 06:05:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24269 to 4859. [2020-12-22 06:05:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4859 states. [2020-12-22 06:05:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 9087 transitions. [2020-12-22 06:05:00,046 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 9087 transitions. Word has length 66 [2020-12-22 06:05:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:00,047 INFO L481 AbstractCegarLoop]: Abstraction has 4859 states and 9087 transitions. [2020-12-22 06:05:00,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:05:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 9087 transitions. [2020-12-22 06:05:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:05:00,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:00,051 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] [2020-12-22 06:05:00,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:05:00,051 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 06:05:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:00,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1712632802, now seen corresponding path program 1 times [2020-12-22 06:05:00,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:00,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115296433] [2020-12-22 06:05:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:00,122 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 06:05:00,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115296433] [2020-12-22 06:05:00,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:00,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:00,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535978179] [2020-12-22 06:05:00,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:00,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:00,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:00,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:00,124 INFO L87 Difference]: Start difference. First operand 4859 states and 9087 transitions. Second operand 5 states. [2020-12-22 06:05:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:02,355 INFO L93 Difference]: Finished difference Result 19504 states and 36450 transitions. [2020-12-22 06:05:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:05:02,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:05:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:02,387 INFO L225 Difference]: With dead ends: 19504 [2020-12-22 06:05:02,387 INFO L226 Difference]: Without dead ends: 14738 [2020-12-22 06:05:02,399 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 06:05:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14738 states. [2020-12-22 06:05:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14738 to 4871. [2020-12-22 06:05:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2020-12-22 06:05:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 9099 transitions. [2020-12-22 06:05:02,787 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 9099 transitions. Word has length 68 [2020-12-22 06:05:02,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:02,788 INFO L481 AbstractCegarLoop]: Abstraction has 4871 states and 9099 transitions. [2020-12-22 06:05:02,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:02,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 9099 transitions. [2020-12-22 06:05:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:05:02,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:02,793 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 06:05:02,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:05:02,793 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 06:05:02,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:02,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1456100407, now seen corresponding path program 1 times [2020-12-22 06:05:02,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:02,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907153884] [2020-12-22 06:05:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:02,857 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 06:05:02,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907153884] [2020-12-22 06:05:02,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:02,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:02,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667513778] [2020-12-22 06:05:02,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:02,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:02,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:02,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:02,859 INFO L87 Difference]: Start difference. First operand 4871 states and 9099 transitions. Second operand 4 states. [2020-12-22 06:05:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:04,890 INFO L93 Difference]: Finished difference Result 17049 states and 31890 transitions. [2020-12-22 06:05:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:05:04,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 06:05:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:04,917 INFO L225 Difference]: With dead ends: 17049 [2020-12-22 06:05:04,917 INFO L226 Difference]: Without dead ends: 12232 [2020-12-22 06:05:04,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 06:05:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2020-12-22 06:05:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 6717. [2020-12-22 06:05:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6717 states. [2020-12-22 06:05:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 12405 transitions. [2020-12-22 06:05:05,325 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 12405 transitions. Word has length 69 [2020-12-22 06:05:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:05,325 INFO L481 AbstractCegarLoop]: Abstraction has 6717 states and 12405 transitions. [2020-12-22 06:05:05,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 12405 transitions. [2020-12-22 06:05:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:05:05,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:05,329 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 06:05:05,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:05:05,330 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 06:05:05,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:05,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1736650596, now seen corresponding path program 1 times [2020-12-22 06:05:05,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:05,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6271032] [2020-12-22 06:05:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:05,391 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 06:05:05,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6271032] [2020-12-22 06:05:05,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:05,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:05,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125510029] [2020-12-22 06:05:05,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:05,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:05,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:05,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:05,393 INFO L87 Difference]: Start difference. First operand 6717 states and 12405 transitions. Second operand 5 states. [2020-12-22 06:05:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:05,592 INFO L93 Difference]: Finished difference Result 10042 states and 18556 transitions. [2020-12-22 06:05:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:05:05,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 06:05:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:05,598 INFO L225 Difference]: With dead ends: 10042 [2020-12-22 06:05:05,599 INFO L226 Difference]: Without dead ends: 3350 [2020-12-22 06:05:05,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:05:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2020-12-22 06:05:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3350. [2020-12-22 06:05:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3350 states. [2020-12-22 06:05:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 6177 transitions. [2020-12-22 06:05:05,844 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 6177 transitions. Word has length 69 [2020-12-22 06:05:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:05,844 INFO L481 AbstractCegarLoop]: Abstraction has 3350 states and 6177 transitions. [2020-12-22 06:05:05,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:05,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 6177 transitions. [2020-12-22 06:05:05,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:05:05,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:05,847 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 06:05:05,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:05:05,847 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 06:05:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2075844719, now seen corresponding path program 1 times [2020-12-22 06:05:05,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:05,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227673171] [2020-12-22 06:05:05,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:05,948 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 06:05:05,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227673171] [2020-12-22 06:05:05,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:05,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:05,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404100222] [2020-12-22 06:05:05,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:05,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:05,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:05,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:05,955 INFO L87 Difference]: Start difference. First operand 3350 states and 6177 transitions. Second operand 5 states. [2020-12-22 06:05:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:07,527 INFO L93 Difference]: Finished difference Result 24203 states and 44881 transitions. [2020-12-22 06:05:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:05:07,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:05:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:07,565 INFO L225 Difference]: With dead ends: 24203 [2020-12-22 06:05:07,566 INFO L226 Difference]: Without dead ends: 20897 [2020-12-22 06:05:07,582 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 06:05:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20897 states. [2020-12-22 06:05:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20897 to 6172. [2020-12-22 06:05:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6172 states. [2020-12-22 06:05:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6172 states to 6172 states and 11435 transitions. [2020-12-22 06:05:08,165 INFO L78 Accepts]: Start accepts. Automaton has 6172 states and 11435 transitions. Word has length 71 [2020-12-22 06:05:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:08,165 INFO L481 AbstractCegarLoop]: Abstraction has 6172 states and 11435 transitions. [2020-12-22 06:05:08,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6172 states and 11435 transitions. [2020-12-22 06:05:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:05:08,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:08,167 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 06:05:08,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:05:08,168 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 06:05:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:08,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1801085105, now seen corresponding path program 1 times [2020-12-22 06:05:08,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:08,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84519434] [2020-12-22 06:05:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:08,249 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 06:05:08,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84519434] [2020-12-22 06:05:08,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:08,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:08,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369217803] [2020-12-22 06:05:08,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:05:08,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:08,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:05:08,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:05:08,251 INFO L87 Difference]: Start difference. First operand 6172 states and 11435 transitions. Second operand 6 states. [2020-12-22 06:05:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:09,484 INFO L93 Difference]: Finished difference Result 11179 states and 20607 transitions. [2020-12-22 06:05:09,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:05:09,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-12-22 06:05:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:09,500 INFO L225 Difference]: With dead ends: 11179 [2020-12-22 06:05:09,500 INFO L226 Difference]: Without dead ends: 8521 [2020-12-22 06:05:09,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:05:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8521 states. [2020-12-22 06:05:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8521 to 6162. [2020-12-22 06:05:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6162 states. [2020-12-22 06:05:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 11415 transitions. [2020-12-22 06:05:09,971 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 11415 transitions. Word has length 71 [2020-12-22 06:05:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:09,972 INFO L481 AbstractCegarLoop]: Abstraction has 6162 states and 11415 transitions. [2020-12-22 06:05:09,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:05:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 11415 transitions. [2020-12-22 06:05:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:05:09,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:09,974 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 06:05:09,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:05:09,975 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 06:05:09,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:09,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1768785045, now seen corresponding path program 1 times [2020-12-22 06:05:09,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:09,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524605756] [2020-12-22 06:05:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:10,056 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 06:05:10,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524605756] [2020-12-22 06:05:10,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:10,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:10,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342453072] [2020-12-22 06:05:10,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:10,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:10,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:10,059 INFO L87 Difference]: Start difference. First operand 6162 states and 11415 transitions. Second operand 5 states. [2020-12-22 06:05:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:11,003 INFO L93 Difference]: Finished difference Result 18842 states and 34899 transitions. [2020-12-22 06:05:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:05:11,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 06:05:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:11,023 INFO L225 Difference]: With dead ends: 18842 [2020-12-22 06:05:11,023 INFO L226 Difference]: Without dead ends: 16190 [2020-12-22 06:05:11,033 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 06:05:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16190 states. [2020-12-22 06:05:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16190 to 8553. [2020-12-22 06:05:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8553 states. [2020-12-22 06:05:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8553 states to 8553 states and 15820 transitions. [2020-12-22 06:05:11,544 INFO L78 Accepts]: Start accepts. Automaton has 8553 states and 15820 transitions. Word has length 73 [2020-12-22 06:05:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:11,544 INFO L481 AbstractCegarLoop]: Abstraction has 8553 states and 15820 transitions. [2020-12-22 06:05:11,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8553 states and 15820 transitions. [2020-12-22 06:05:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:05:11,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:11,547 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 06:05:11,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:05:11,548 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 06:05:11,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:11,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1891753177, now seen corresponding path program 1 times [2020-12-22 06:05:11,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:11,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818984258] [2020-12-22 06:05:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:11,614 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 06:05:11,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818984258] [2020-12-22 06:05:11,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:11,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:11,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336588524] [2020-12-22 06:05:11,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:11,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:11,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:11,616 INFO L87 Difference]: Start difference. First operand 8553 states and 15820 transitions. Second operand 5 states. [2020-12-22 06:05:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:12,446 INFO L93 Difference]: Finished difference Result 17777 states and 32735 transitions. [2020-12-22 06:05:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:05:12,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 06:05:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:12,462 INFO L225 Difference]: With dead ends: 17777 [2020-12-22 06:05:12,462 INFO L226 Difference]: Without dead ends: 12951 [2020-12-22 06:05:12,469 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 06:05:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12951 states. [2020-12-22 06:05:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12951 to 8570. [2020-12-22 06:05:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8570 states. [2020-12-22 06:05:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8570 states to 8570 states and 15833 transitions. [2020-12-22 06:05:13,031 INFO L78 Accepts]: Start accepts. Automaton has 8570 states and 15833 transitions. Word has length 75 [2020-12-22 06:05:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:13,031 INFO L481 AbstractCegarLoop]: Abstraction has 8570 states and 15833 transitions. [2020-12-22 06:05:13,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8570 states and 15833 transitions. [2020-12-22 06:05:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:05:13,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:13,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:13,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:05:13,038 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 06:05:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:13,039 INFO L82 PathProgramCache]: Analyzing trace with hash -383722097, now seen corresponding path program 1 times [2020-12-22 06:05:13,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:13,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493724356] [2020-12-22 06:05:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:13,119 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 06:05:13,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493724356] [2020-12-22 06:05:13,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:13,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:13,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889605730] [2020-12-22 06:05:13,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:13,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:13,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:13,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:13,125 INFO L87 Difference]: Start difference. First operand 8570 states and 15833 transitions. Second operand 5 states. [2020-12-22 06:05:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:14,352 INFO L93 Difference]: Finished difference Result 19529 states and 36182 transitions. [2020-12-22 06:05:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:05:14,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 06:05:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:14,367 INFO L225 Difference]: With dead ends: 19529 [2020-12-22 06:05:14,367 INFO L226 Difference]: Without dead ends: 12496 [2020-12-22 06:05:14,372 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 06:05:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12496 states. [2020-12-22 06:05:14,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12496 to 8570. [2020-12-22 06:05:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8570 states. [2020-12-22 06:05:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8570 states to 8570 states and 15733 transitions. [2020-12-22 06:05:14,726 INFO L78 Accepts]: Start accepts. Automaton has 8570 states and 15733 transitions. Word has length 82 [2020-12-22 06:05:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:14,726 INFO L481 AbstractCegarLoop]: Abstraction has 8570 states and 15733 transitions. [2020-12-22 06:05:14,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 8570 states and 15733 transitions. [2020-12-22 06:05:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:05:14,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:14,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:14,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:05:14,730 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 06:05:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:14,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2025320236, now seen corresponding path program 1 times [2020-12-22 06:05:14,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:14,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671509003] [2020-12-22 06:05:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:14,808 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 06:05:14,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671509003] [2020-12-22 06:05:14,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:14,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:05:14,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607174910] [2020-12-22 06:05:14,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:05:14,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:14,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:05:14,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:05:14,810 INFO L87 Difference]: Start difference. First operand 8570 states and 15733 transitions. Second operand 6 states. [2020-12-22 06:05:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:15,316 INFO L93 Difference]: Finished difference Result 13762 states and 25138 transitions. [2020-12-22 06:05:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:05:15,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 06:05:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:15,327 INFO L225 Difference]: With dead ends: 13762 [2020-12-22 06:05:15,328 INFO L226 Difference]: Without dead ends: 8585 [2020-12-22 06:05:15,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 06:05:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2020-12-22 06:05:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8570. [2020-12-22 06:05:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8570 states. [2020-12-22 06:05:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8570 states to 8570 states and 15631 transitions. [2020-12-22 06:05:15,763 INFO L78 Accepts]: Start accepts. Automaton has 8570 states and 15631 transitions. Word has length 82 [2020-12-22 06:05:15,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:15,763 INFO L481 AbstractCegarLoop]: Abstraction has 8570 states and 15631 transitions. [2020-12-22 06:05:15,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:05:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8570 states and 15631 transitions. [2020-12-22 06:05:15,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:05:15,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:15,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:15,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:05:15,767 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 06:05:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash -667437268, now seen corresponding path program 1 times [2020-12-22 06:05:15,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:15,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952499933] [2020-12-22 06:05:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:15,830 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 06:05:15,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952499933] [2020-12-22 06:05:15,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:15,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:15,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323971920] [2020-12-22 06:05:15,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:15,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:15,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:15,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:15,835 INFO L87 Difference]: Start difference. First operand 8570 states and 15631 transitions. Second operand 3 states. [2020-12-22 06:05:16,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:16,517 INFO L93 Difference]: Finished difference Result 23557 states and 43027 transitions. [2020-12-22 06:05:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:16,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:05:16,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:16,539 INFO L225 Difference]: With dead ends: 23557 [2020-12-22 06:05:16,539 INFO L226 Difference]: Without dead ends: 16626 [2020-12-22 06:05:16,548 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 06:05:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16626 states. [2020-12-22 06:05:17,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16626 to 16626. [2020-12-22 06:05:17,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16626 states. [2020-12-22 06:05:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16626 states to 16626 states and 30410 transitions. [2020-12-22 06:05:17,321 INFO L78 Accepts]: Start accepts. Automaton has 16626 states and 30410 transitions. Word has length 83 [2020-12-22 06:05:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:17,321 INFO L481 AbstractCegarLoop]: Abstraction has 16626 states and 30410 transitions. [2020-12-22 06:05:17,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 16626 states and 30410 transitions. [2020-12-22 06:05:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:05:17,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:17,325 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 06:05:17,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:05:17,326 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 06:05:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:17,326 INFO L82 PathProgramCache]: Analyzing trace with hash -350142471, now seen corresponding path program 1 times [2020-12-22 06:05:17,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:17,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757650886] [2020-12-22 06:05:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:17,391 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 06:05:17,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757650886] [2020-12-22 06:05:17,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:17,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:17,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071411539] [2020-12-22 06:05:17,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:17,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:17,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:17,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:17,393 INFO L87 Difference]: Start difference. First operand 16626 states and 30410 transitions. Second operand 3 states. [2020-12-22 06:05:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:18,856 INFO L93 Difference]: Finished difference Result 46282 states and 84611 transitions. [2020-12-22 06:05:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:18,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 06:05:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:18,898 INFO L225 Difference]: With dead ends: 46282 [2020-12-22 06:05:18,898 INFO L226 Difference]: Without dead ends: 32508 [2020-12-22 06:05:18,915 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 06:05:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32508 states. [2020-12-22 06:05:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32508 to 32506. [2020-12-22 06:05:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32506 states. [2020-12-22 06:05:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32506 states to 32506 states and 59522 transitions. [2020-12-22 06:05:20,437 INFO L78 Accepts]: Start accepts. Automaton has 32506 states and 59522 transitions. Word has length 85 [2020-12-22 06:05:20,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:20,437 INFO L481 AbstractCegarLoop]: Abstraction has 32506 states and 59522 transitions. [2020-12-22 06:05:20,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 32506 states and 59522 transitions. [2020-12-22 06:05:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:05:20,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:20,443 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] [2020-12-22 06:05:20,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:05:20,443 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 06:05:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:20,443 INFO L82 PathProgramCache]: Analyzing trace with hash 845900624, now seen corresponding path program 1 times [2020-12-22 06:05:20,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:20,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208389477] [2020-12-22 06:05:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:20,534 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 06:05:20,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208389477] [2020-12-22 06:05:20,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:20,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:20,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731298697] [2020-12-22 06:05:20,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:20,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:20,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:20,537 INFO L87 Difference]: Start difference. First operand 32506 states and 59522 transitions. Second operand 3 states. [2020-12-22 06:05:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:23,663 INFO L93 Difference]: Finished difference Result 91237 states and 166830 transitions. [2020-12-22 06:05:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:23,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:05:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:23,760 INFO L225 Difference]: With dead ends: 91237 [2020-12-22 06:05:23,760 INFO L226 Difference]: Without dead ends: 63796 [2020-12-22 06:05:23,787 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 06:05:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63796 states. [2020-12-22 06:05:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63796 to 63792. [2020-12-22 06:05:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63792 states. [2020-12-22 06:05:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63792 states to 63792 states and 116834 transitions. [2020-12-22 06:05:27,325 INFO L78 Accepts]: Start accepts. Automaton has 63792 states and 116834 transitions. Word has length 86 [2020-12-22 06:05:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:27,326 INFO L481 AbstractCegarLoop]: Abstraction has 63792 states and 116834 transitions. [2020-12-22 06:05:27,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 63792 states and 116834 transitions. [2020-12-22 06:05:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:05:27,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:27,333 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] [2020-12-22 06:05:27,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:05:27,333 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 06:05:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash 453133472, now seen corresponding path program 1 times [2020-12-22 06:05:27,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:27,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924085416] [2020-12-22 06:05:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:27,562 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 06:05:27,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924085416] [2020-12-22 06:05:27,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:27,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:27,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253712000] [2020-12-22 06:05:27,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:27,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:27,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:27,564 INFO L87 Difference]: Start difference. First operand 63792 states and 116834 transitions. Second operand 3 states. [2020-12-22 06:05:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:33,532 INFO L93 Difference]: Finished difference Result 180140 states and 329335 transitions. [2020-12-22 06:05:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:33,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 06:05:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:33,900 INFO L225 Difference]: With dead ends: 180140 [2020-12-22 06:05:33,914 INFO L226 Difference]: Without dead ends: 125412 [2020-12-22 06:05:34,019 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 06:05:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125412 states. [2020-12-22 06:05:40,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125412 to 125406. [2020-12-22 06:05:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125406 states. [2020-12-22 06:05:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125406 states to 125406 states and 229614 transitions. [2020-12-22 06:05:40,877 INFO L78 Accepts]: Start accepts. Automaton has 125406 states and 229614 transitions. Word has length 87 [2020-12-22 06:05:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:40,877 INFO L481 AbstractCegarLoop]: Abstraction has 125406 states and 229614 transitions. [2020-12-22 06:05:40,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 125406 states and 229614 transitions. [2020-12-22 06:05:40,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:05:40,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:40,883 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] [2020-12-22 06:05:40,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:05:40,884 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 06:05:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1162253657, now seen corresponding path program 1 times [2020-12-22 06:05:40,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:40,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119390053] [2020-12-22 06:05:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:40,966 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 06:05:40,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119390053] [2020-12-22 06:05:40,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:40,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:40,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287479170] [2020-12-22 06:05:40,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:40,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:40,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:40,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:40,968 INFO L87 Difference]: Start difference. First operand 125406 states and 229614 transitions. Second operand 3 states. [2020-12-22 06:05:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:52,642 INFO L93 Difference]: Finished difference Result 355915 states and 650443 transitions. [2020-12-22 06:05:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:52,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 06:05:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:53,382 INFO L225 Difference]: With dead ends: 355915 [2020-12-22 06:05:53,382 INFO L226 Difference]: Without dead ends: 246711 [2020-12-22 06:05:53,480 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 06:05:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246711 states. [2020-12-22 06:06:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246711 to 246703. [2020-12-22 06:06:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246703 states. [2020-12-22 06:06:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246703 states to 246703 states and 451439 transitions. [2020-12-22 06:06:06,577 INFO L78 Accepts]: Start accepts. Automaton has 246703 states and 451439 transitions. Word has length 88 [2020-12-22 06:06:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:06,577 INFO L481 AbstractCegarLoop]: Abstraction has 246703 states and 451439 transitions. [2020-12-22 06:06:06,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 246703 states and 451439 transitions. [2020-12-22 06:06:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:06:06,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:06,598 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] [2020-12-22 06:06:06,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:06:06,599 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 06:06:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:06,599 INFO L82 PathProgramCache]: Analyzing trace with hash -319384466, now seen corresponding path program 1 times [2020-12-22 06:06:06,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:06,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874076089] [2020-12-22 06:06:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:06,686 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 06:06:06,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874076089] [2020-12-22 06:06:06,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:06,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:06,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547740799] [2020-12-22 06:06:06,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:06,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:06,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:06,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:06,688 INFO L87 Difference]: Start difference. First operand 246703 states and 451439 transitions. Second operand 5 states. [2020-12-22 06:06:24,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:24,374 INFO L93 Difference]: Finished difference Result 551862 states and 995296 transitions. [2020-12-22 06:06:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:06:24,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:06:24,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:25,306 INFO L225 Difference]: With dead ends: 551862 [2020-12-22 06:06:25,307 INFO L226 Difference]: Without dead ends: 305388 [2020-12-22 06:06:25,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:06:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305388 states. [2020-12-22 06:06:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305388 to 247282. [2020-12-22 06:06:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247282 states. [2020-12-22 06:06:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247282 states to 247282 states and 452018 transitions. [2020-12-22 06:06:39,867 INFO L78 Accepts]: Start accepts. Automaton has 247282 states and 452018 transitions. Word has length 110 [2020-12-22 06:06:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:39,868 INFO L481 AbstractCegarLoop]: Abstraction has 247282 states and 452018 transitions. [2020-12-22 06:06:39,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 247282 states and 452018 transitions. [2020-12-22 06:06:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 06:06:39,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:39,895 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] [2020-12-22 06:06:39,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:06:39,895 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 06:06:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash 875192135, now seen corresponding path program 1 times [2020-12-22 06:06:39,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:39,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481697688] [2020-12-22 06:06:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:39,974 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 06:06:39,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481697688] [2020-12-22 06:06:39,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:39,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:39,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236942301] [2020-12-22 06:06:39,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:06:39,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:39,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:06:39,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:06:39,979 INFO L87 Difference]: Start difference. First operand 247282 states and 452018 transitions. Second operand 4 states. [2020-12-22 06:06:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:57,287 INFO L93 Difference]: Finished difference Result 552625 states and 1006166 transitions. [2020-12-22 06:06:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:06:57,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-22 06:06:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:57,972 INFO L225 Difference]: With dead ends: 552625 [2020-12-22 06:06:57,972 INFO L226 Difference]: Without dead ends: 305381 [2020-12-22 06:06:58,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 06:06:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305381 states. [2020-12-22 06:07:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305381 to 152610. [2020-12-22 06:07:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152610 states. [2020-12-22 06:07:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152610 states to 152610 states and 277152 transitions. [2020-12-22 06:07:11,561 INFO L78 Accepts]: Start accepts. Automaton has 152610 states and 277152 transitions. Word has length 111 [2020-12-22 06:07:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:11,561 INFO L481 AbstractCegarLoop]: Abstraction has 152610 states and 277152 transitions. [2020-12-22 06:07:11,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 152610 states and 277152 transitions. [2020-12-22 06:07:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-22 06:07:11,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:11,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:11,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:07:11,605 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 06:07:11,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:11,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1626617067, now seen corresponding path program 1 times [2020-12-22 06:07:11,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:11,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174439935] [2020-12-22 06:07:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:11,714 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 06:07:11,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174439935] [2020-12-22 06:07:11,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:11,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:11,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969335340] [2020-12-22 06:07:11,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:11,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:11,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:11,716 INFO L87 Difference]: Start difference. First operand 152610 states and 277152 transitions. Second operand 5 states. [2020-12-22 06:07:12,337 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-22 06:07:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:28,907 INFO L93 Difference]: Finished difference Result 440579 states and 802949 transitions. [2020-12-22 06:07:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:07:28,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-12-22 06:07:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:29,688 INFO L225 Difference]: With dead ends: 440579 [2020-12-22 06:07:29,688 INFO L226 Difference]: Without dead ends: 288192 [2020-12-22 06:07:29,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:07:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288192 states. [2020-12-22 06:07:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288192 to 152610. [2020-12-22 06:07:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152610 states. [2020-12-22 06:07:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152610 states to 152610 states and 277024 transitions. [2020-12-22 06:07:40,732 INFO L78 Accepts]: Start accepts. Automaton has 152610 states and 277024 transitions. Word has length 173 [2020-12-22 06:07:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:40,733 INFO L481 AbstractCegarLoop]: Abstraction has 152610 states and 277024 transitions. [2020-12-22 06:07:40,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:07:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 152610 states and 277024 transitions. [2020-12-22 06:07:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 06:07:40,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:40,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:40,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:07:40,779 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 06:07:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:40,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1060761497, now seen corresponding path program 1 times [2020-12-22 06:07:40,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:40,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722179914] [2020-12-22 06:07:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:40,941 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 06:07:40,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722179914] [2020-12-22 06:07:40,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:40,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:40,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680512115] [2020-12-22 06:07:40,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:07:40,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:40,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:07:40,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:40,943 INFO L87 Difference]: Start difference. First operand 152610 states and 277024 transitions. Second operand 5 states. [2020-12-22 06:07:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:57,531 INFO L93 Difference]: Finished difference Result 439912 states and 801688 transitions. [2020-12-22 06:07:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:07:57,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-12-22 06:07:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:58,373 INFO L225 Difference]: With dead ends: 439912 [2020-12-22 06:07:58,373 INFO L226 Difference]: Without dead ends: 287525 [2020-12-22 06:07:58,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:07:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287525 states.