/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:01:38,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:01:38,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:01:38,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:01:38,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:01:38,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:01:38,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:01:38,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:01:38,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:01:38,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:01:38,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:01:38,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:01:38,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:01:38,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:01:38,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:01:38,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:01:38,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:01:38,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:01:38,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:01:38,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:01:38,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:01:38,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:01:38,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:01:38,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:01:38,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:01:38,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:01:38,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:01:38,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:01:38,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:01:38,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:01:38,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:01:38,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:01:38,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:01:38,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:01:38,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:01:38,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:01:38,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:01:38,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:01:38,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:01:38,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:01:38,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:01:38,922 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:01:38,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:01:38,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:01:38,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:01:38,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:01:38,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:01:38,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:01:38,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:01:38,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:01:38,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:01:38,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:01:38,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:01:38,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:01:38,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:01:38,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:01:38,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:01:38,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:01:38,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:01:38,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:01:38,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:01:38,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:01:38,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:01:39,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:01:39,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:01:39,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:01:39,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:01:39,356 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:01:39,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2020-12-22 06:01:39,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0891be36/b8e8c5daabdb4c0988bf7ae382431fd7/FLAG07aeb575e [2020-12-22 06:01:40,318 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:01:40,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2020-12-22 06:01:40,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0891be36/b8e8c5daabdb4c0988bf7ae382431fd7/FLAG07aeb575e [2020-12-22 06:01:40,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0891be36/b8e8c5daabdb4c0988bf7ae382431fd7 [2020-12-22 06:01:40,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:01:40,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:01:40,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:01:40,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:01:40,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:01:40,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:40" (1/1) ... [2020-12-22 06:01:40,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbfb146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:40, skipping insertion in model container [2020-12-22 06:01:40,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:40" (1/1) ... [2020-12-22 06:01:40,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:01:40,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:01:41,084 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35091,35104] [2020-12-22 06:01:41,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:01:41,462 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:01:41,587 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35091,35104] [2020-12-22 06:01:41,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:01:41,718 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:01:41,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41 WrapperNode [2020-12-22 06:01:41,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:01:41,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:01:41,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:01:41,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:01:41,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:41,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:01:42,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:01:42,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:01:42,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:01:42,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:42,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:01:42,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:01:42,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:01:42,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:01:42,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:01:42,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:01:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:01:42,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:01:42,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:01:48,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:01:48,545 INFO L299 CfgBuilder]: Removed 649 assume(true) statements. [2020-12-22 06:01:48,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:48 BoogieIcfgContainer [2020-12-22 06:01:48,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:01:48,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:01:48,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:01:48,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:01:48,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:01:40" (1/3) ... [2020-12-22 06:01:48,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d31250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:48, skipping insertion in model container [2020-12-22 06:01:48,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41" (2/3) ... [2020-12-22 06:01:48,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d31250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:48, skipping insertion in model container [2020-12-22 06:01:48,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:48" (3/3) ... [2020-12-22 06:01:48,561 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2020-12-22 06:01:48,570 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:01:48,578 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:01:48,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:01:48,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:01:48,650 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:01:48,650 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:01:48,650 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:01:48,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:01:48,650 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:01:48,650 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:01:48,651 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:01:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states. [2020-12-22 06:01:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:01:48,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:48,735 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 06:01:48,736 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:48,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:48,743 INFO L82 PathProgramCache]: Analyzing trace with hash 548572505, now seen corresponding path program 1 times [2020-12-22 06:01:48,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:48,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224264685] [2020-12-22 06:01:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:49,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224264685] [2020-12-22 06:01:49,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:49,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:49,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96897608] [2020-12-22 06:01:49,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:49,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:49,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:49,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:49,208 INFO L87 Difference]: Start difference. First operand 2603 states. Second operand 3 states. [2020-12-22 06:01:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:49,547 INFO L93 Difference]: Finished difference Result 7729 states and 14513 transitions. [2020-12-22 06:01:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:49,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 06:01:49,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:49,611 INFO L225 Difference]: With dead ends: 7729 [2020-12-22 06:01:49,611 INFO L226 Difference]: Without dead ends: 5131 [2020-12-22 06:01:49,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2020-12-22 06:01:49,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 2599. [2020-12-22 06:01:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2599 states. [2020-12-22 06:01:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 4868 transitions. [2020-12-22 06:01:49,884 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 4868 transitions. Word has length 53 [2020-12-22 06:01:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:49,884 INFO L481 AbstractCegarLoop]: Abstraction has 2599 states and 4868 transitions. [2020-12-22 06:01:49,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 4868 transitions. [2020-12-22 06:01:49,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:01:49,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:49,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:49,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:01:49,890 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1724451506, now seen corresponding path program 1 times [2020-12-22 06:01:49,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:49,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238532337] [2020-12-22 06:01:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:50,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238532337] [2020-12-22 06:01:50,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:50,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:50,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490694008] [2020-12-22 06:01:50,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:50,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:50,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:50,122 INFO L87 Difference]: Start difference. First operand 2599 states and 4868 transitions. Second operand 6 states. [2020-12-22 06:01:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:50,781 INFO L93 Difference]: Finished difference Result 10171 states and 19069 transitions. [2020-12-22 06:01:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:50,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:01:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:50,835 INFO L225 Difference]: With dead ends: 10171 [2020-12-22 06:01:50,835 INFO L226 Difference]: Without dead ends: 7615 [2020-12-22 06:01:50,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:01:50,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7615 states. [2020-12-22 06:01:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7615 to 2595. [2020-12-22 06:01:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2020-12-22 06:01:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 4857 transitions. [2020-12-22 06:01:51,024 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 4857 transitions. Word has length 60 [2020-12-22 06:01:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:51,025 INFO L481 AbstractCegarLoop]: Abstraction has 2595 states and 4857 transitions. [2020-12-22 06:01:51,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 4857 transitions. [2020-12-22 06:01:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:01:51,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:51,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:51,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:01:51,031 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:51,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1587010107, now seen corresponding path program 1 times [2020-12-22 06:01:51,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:51,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943240232] [2020-12-22 06:01:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:51,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943240232] [2020-12-22 06:01:51,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:51,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:51,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138124814] [2020-12-22 06:01:51,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:51,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:51,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:51,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:51,186 INFO L87 Difference]: Start difference. First operand 2595 states and 4857 transitions. Second operand 4 states. [2020-12-22 06:01:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:51,808 INFO L93 Difference]: Finished difference Result 7673 states and 14380 transitions. [2020-12-22 06:01:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:51,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:01:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:51,839 INFO L225 Difference]: With dead ends: 7673 [2020-12-22 06:01:51,839 INFO L226 Difference]: Without dead ends: 5121 [2020-12-22 06:01:51,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2020-12-22 06:01:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 2595. [2020-12-22 06:01:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2020-12-22 06:01:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 4848 transitions. [2020-12-22 06:01:51,993 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 4848 transitions. Word has length 62 [2020-12-22 06:01:51,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:52,001 INFO L481 AbstractCegarLoop]: Abstraction has 2595 states and 4848 transitions. [2020-12-22 06:01:52,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 4848 transitions. [2020-12-22 06:01:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:01:52,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:52,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:52,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:01:52,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:52,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1608465768, now seen corresponding path program 1 times [2020-12-22 06:01:52,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:52,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804253472] [2020-12-22 06:01:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:52,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804253472] [2020-12-22 06:01:52,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:52,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:52,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461358274] [2020-12-22 06:01:52,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:52,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:52,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:52,168 INFO L87 Difference]: Start difference. First operand 2595 states and 4848 transitions. Second operand 4 states. [2020-12-22 06:01:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:52,672 INFO L93 Difference]: Finished difference Result 7673 states and 14362 transitions. [2020-12-22 06:01:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:52,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:01:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:52,722 INFO L225 Difference]: With dead ends: 7673 [2020-12-22 06:01:52,722 INFO L226 Difference]: Without dead ends: 5121 [2020-12-22 06:01:52,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2020-12-22 06:01:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 2595. [2020-12-22 06:01:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2020-12-22 06:01:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 4839 transitions. [2020-12-22 06:01:52,880 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 4839 transitions. Word has length 64 [2020-12-22 06:01:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:52,882 INFO L481 AbstractCegarLoop]: Abstraction has 2595 states and 4839 transitions. [2020-12-22 06:01:52,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 4839 transitions. [2020-12-22 06:01:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:01:52,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:52,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:52,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:01:52,889 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:52,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1164857915, now seen corresponding path program 1 times [2020-12-22 06:01:52,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:52,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868223592] [2020-12-22 06:01:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:53,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868223592] [2020-12-22 06:01:53,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:53,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:53,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291196112] [2020-12-22 06:01:53,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:53,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:53,025 INFO L87 Difference]: Start difference. First operand 2595 states and 4839 transitions. Second operand 4 states. [2020-12-22 06:01:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:53,819 INFO L93 Difference]: Finished difference Result 12665 states and 23702 transitions. [2020-12-22 06:01:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:53,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:01:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:53,853 INFO L225 Difference]: With dead ends: 12665 [2020-12-22 06:01:53,853 INFO L226 Difference]: Without dead ends: 10113 [2020-12-22 06:01:53,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10113 states. [2020-12-22 06:01:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 2595. [2020-12-22 06:01:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2595 states. [2020-12-22 06:01:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 4835 transitions. [2020-12-22 06:01:54,051 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 4835 transitions. Word has length 66 [2020-12-22 06:01:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:54,052 INFO L481 AbstractCegarLoop]: Abstraction has 2595 states and 4835 transitions. [2020-12-22 06:01:54,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 4835 transitions. [2020-12-22 06:01:54,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:01:54,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:54,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:54,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:01:54,058 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:54,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:54,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1823792827, now seen corresponding path program 1 times [2020-12-22 06:01:54,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:54,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371567402] [2020-12-22 06:01:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:54,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371567402] [2020-12-22 06:01:54,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:54,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:54,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658739413] [2020-12-22 06:01:54,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:54,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:54,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:54,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:54,169 INFO L87 Difference]: Start difference. First operand 2595 states and 4835 transitions. Second operand 4 states. [2020-12-22 06:01:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:54,645 INFO L93 Difference]: Finished difference Result 10148 states and 18983 transitions. [2020-12-22 06:01:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:54,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:01:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:54,667 INFO L225 Difference]: With dead ends: 10148 [2020-12-22 06:01:54,668 INFO L226 Difference]: Without dead ends: 7575 [2020-12-22 06:01:54,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2020-12-22 06:01:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 2577. [2020-12-22 06:01:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2577 states. [2020-12-22 06:01:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4804 transitions. [2020-12-22 06:01:54,878 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4804 transitions. Word has length 66 [2020-12-22 06:01:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:54,878 INFO L481 AbstractCegarLoop]: Abstraction has 2577 states and 4804 transitions. [2020-12-22 06:01:54,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4804 transitions. [2020-12-22 06:01:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:01:54,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:54,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:54,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:01:54,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash 348934464, now seen corresponding path program 1 times [2020-12-22 06:01:54,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:54,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581498587] [2020-12-22 06:01:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:54,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581498587] [2020-12-22 06:01:54,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:54,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:54,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674109390] [2020-12-22 06:01:54,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:54,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:54,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:54,991 INFO L87 Difference]: Start difference. First operand 2577 states and 4804 transitions. Second operand 4 states. [2020-12-22 06:01:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:55,455 INFO L93 Difference]: Finished difference Result 7637 states and 14275 transitions. [2020-12-22 06:01:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:55,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 06:01:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:55,472 INFO L225 Difference]: With dead ends: 7637 [2020-12-22 06:01:55,472 INFO L226 Difference]: Without dead ends: 5082 [2020-12-22 06:01:55,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2020-12-22 06:01:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 2577. [2020-12-22 06:01:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2577 states. [2020-12-22 06:01:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4798 transitions. [2020-12-22 06:01:55,669 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4798 transitions. Word has length 67 [2020-12-22 06:01:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:55,669 INFO L481 AbstractCegarLoop]: Abstraction has 2577 states and 4798 transitions. [2020-12-22 06:01:55,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4798 transitions. [2020-12-22 06:01:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:01:55,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:55,673 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 06:01:55,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:01:55,673 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:55,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:55,674 INFO L82 PathProgramCache]: Analyzing trace with hash 584795776, now seen corresponding path program 1 times [2020-12-22 06:01:55,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:55,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750948119] [2020-12-22 06:01:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:55,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750948119] [2020-12-22 06:01:55,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:55,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:55,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837204042] [2020-12-22 06:01:55,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:55,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:55,775 INFO L87 Difference]: Start difference. First operand 2577 states and 4798 transitions. Second operand 4 states. [2020-12-22 06:01:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:56,169 INFO L93 Difference]: Finished difference Result 7637 states and 14263 transitions. [2020-12-22 06:01:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:56,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 06:01:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:56,183 INFO L225 Difference]: With dead ends: 7637 [2020-12-22 06:01:56,183 INFO L226 Difference]: Without dead ends: 5082 [2020-12-22 06:01:56,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2020-12-22 06:01:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 2577. [2020-12-22 06:01:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2577 states. [2020-12-22 06:01:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4792 transitions. [2020-12-22 06:01:56,315 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4792 transitions. Word has length 68 [2020-12-22 06:01:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:56,315 INFO L481 AbstractCegarLoop]: Abstraction has 2577 states and 4792 transitions. [2020-12-22 06:01:56,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4792 transitions. [2020-12-22 06:01:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:01:56,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:56,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:56,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:01:56,318 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:56,319 INFO L82 PathProgramCache]: Analyzing trace with hash -140500325, now seen corresponding path program 1 times [2020-12-22 06:01:56,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:56,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208672324] [2020-12-22 06:01:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:56,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208672324] [2020-12-22 06:01:56,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:56,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:01:56,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23875825] [2020-12-22 06:01:56,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:01:56,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:56,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:01:56,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:56,399 INFO L87 Difference]: Start difference. First operand 2577 states and 4792 transitions. Second operand 7 states. [2020-12-22 06:01:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:57,273 INFO L93 Difference]: Finished difference Result 12636 states and 23616 transitions. [2020-12-22 06:01:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:57,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 06:01:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:57,303 INFO L225 Difference]: With dead ends: 12636 [2020-12-22 06:01:57,303 INFO L226 Difference]: Without dead ends: 10087 [2020-12-22 06:01:57,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:01:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10087 states. [2020-12-22 06:01:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10087 to 2579. [2020-12-22 06:01:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2020-12-22 06:01:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4793 transitions. [2020-12-22 06:01:57,482 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4793 transitions. Word has length 69 [2020-12-22 06:01:57,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:57,482 INFO L481 AbstractCegarLoop]: Abstraction has 2579 states and 4793 transitions. [2020-12-22 06:01:57,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:01:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4793 transitions. [2020-12-22 06:01:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:01:57,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:57,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:57,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:01:57,486 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:57,487 INFO L82 PathProgramCache]: Analyzing trace with hash -188047530, now seen corresponding path program 1 times [2020-12-22 06:01:57,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:57,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949025522] [2020-12-22 06:01:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:57,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949025522] [2020-12-22 06:01:57,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:57,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:01:57,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356514002] [2020-12-22 06:01:57,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:01:57,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:57,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:01:57,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:57,585 INFO L87 Difference]: Start difference. First operand 2579 states and 4793 transitions. Second operand 7 states. [2020-12-22 06:01:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:58,492 INFO L93 Difference]: Finished difference Result 12628 states and 23595 transitions. [2020-12-22 06:01:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:58,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-12-22 06:01:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:58,522 INFO L225 Difference]: With dead ends: 12628 [2020-12-22 06:01:58,522 INFO L226 Difference]: Without dead ends: 10082 [2020-12-22 06:01:58,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:01:58,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10082 states. [2020-12-22 06:01:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10082 to 2584. [2020-12-22 06:01:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2584 states. [2020-12-22 06:01:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 4801 transitions. [2020-12-22 06:01:58,714 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 4801 transitions. Word has length 71 [2020-12-22 06:01:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:58,715 INFO L481 AbstractCegarLoop]: Abstraction has 2584 states and 4801 transitions. [2020-12-22 06:01:58,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:01:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 4801 transitions. [2020-12-22 06:01:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:01:58,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:58,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:58,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:01:58,721 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:58,722 INFO L82 PathProgramCache]: Analyzing trace with hash -652311525, now seen corresponding path program 1 times [2020-12-22 06:01:58,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:58,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252052925] [2020-12-22 06:01:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:58,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252052925] [2020-12-22 06:01:58,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:58,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:58,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869885740] [2020-12-22 06:01:58,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:58,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:58,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:58,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:58,798 INFO L87 Difference]: Start difference. First operand 2584 states and 4801 transitions. Second operand 3 states. [2020-12-22 06:01:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:58,938 INFO L93 Difference]: Finished difference Result 5110 states and 9520 transitions. [2020-12-22 06:01:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:58,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 06:01:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:58,947 INFO L225 Difference]: With dead ends: 5110 [2020-12-22 06:01:58,948 INFO L226 Difference]: Without dead ends: 2563 [2020-12-22 06:01:58,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2020-12-22 06:01:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2020-12-22 06:01:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2020-12-22 06:01:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4765 transitions. [2020-12-22 06:01:59,128 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4765 transitions. Word has length 73 [2020-12-22 06:01:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:59,129 INFO L481 AbstractCegarLoop]: Abstraction has 2563 states and 4765 transitions. [2020-12-22 06:01:59,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4765 transitions. [2020-12-22 06:01:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:01:59,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:59,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:59,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:01:59,136 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:59,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:59,137 INFO L82 PathProgramCache]: Analyzing trace with hash 380076096, now seen corresponding path program 1 times [2020-12-22 06:01:59,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:59,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514036653] [2020-12-22 06:01:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:59,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514036653] [2020-12-22 06:01:59,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:59,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:59,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388674821] [2020-12-22 06:01:59,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:59,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:59,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:59,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:59,229 INFO L87 Difference]: Start difference. First operand 2563 states and 4765 transitions. Second operand 5 states. [2020-12-22 06:01:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:59,445 INFO L93 Difference]: Finished difference Result 5059 states and 9442 transitions. [2020-12-22 06:01:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:59,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 06:01:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:59,455 INFO L225 Difference]: With dead ends: 5059 [2020-12-22 06:01:59,455 INFO L226 Difference]: Without dead ends: 2557 [2020-12-22 06:01:59,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2020-12-22 06:01:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2557. [2020-12-22 06:01:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2557 states. [2020-12-22 06:01:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 4756 transitions. [2020-12-22 06:01:59,589 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 4756 transitions. Word has length 75 [2020-12-22 06:01:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:59,593 INFO L481 AbstractCegarLoop]: Abstraction has 2557 states and 4756 transitions. [2020-12-22 06:01:59,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 4756 transitions. [2020-12-22 06:01:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:01:59,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:59,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:59,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:01:59,601 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:59,601 INFO L82 PathProgramCache]: Analyzing trace with hash 123083968, now seen corresponding path program 1 times [2020-12-22 06:01:59,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:59,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628115789] [2020-12-22 06:01:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:59,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628115789] [2020-12-22 06:01:59,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:59,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:59,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242523314] [2020-12-22 06:01:59,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:59,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:59,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:59,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:59,692 INFO L87 Difference]: Start difference. First operand 2557 states and 4756 transitions. Second operand 4 states. [2020-12-22 06:01:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:59,872 INFO L93 Difference]: Finished difference Result 5053 states and 9433 transitions. [2020-12-22 06:01:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:59,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 06:01:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:59,883 INFO L225 Difference]: With dead ends: 5053 [2020-12-22 06:01:59,884 INFO L226 Difference]: Without dead ends: 2543 [2020-12-22 06:01:59,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2020-12-22 06:02:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2543. [2020-12-22 06:02:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-12-22 06:02:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4735 transitions. [2020-12-22 06:02:00,074 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4735 transitions. Word has length 75 [2020-12-22 06:02:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:00,075 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 4735 transitions. [2020-12-22 06:02:00,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4735 transitions. [2020-12-22 06:02:00,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:02:00,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:00,078 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] [2020-12-22 06:02:00,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:02:00,079 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 06:02:00,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:00,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1982325869, now seen corresponding path program 1 times [2020-12-22 06:02:00,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:00,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982199215] [2020-12-22 06:02:00,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:00,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982199215] [2020-12-22 06:02:00,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:00,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:00,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028853742] [2020-12-22 06:02:00,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:00,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:00,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:00,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:00,179 INFO L87 Difference]: Start difference. First operand 2543 states and 4735 transitions. Second operand 6 states. [2020-12-22 06:02:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:00,470 INFO L93 Difference]: Finished difference Result 5053 states and 9428 transitions. [2020-12-22 06:02:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:00,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 06:02:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:00,479 INFO L225 Difference]: With dead ends: 5053 [2020-12-22 06:02:00,479 INFO L226 Difference]: Without dead ends: 2563 [2020-12-22 06:02:00,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:02:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2020-12-22 06:02:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2543. [2020-12-22 06:02:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-12-22 06:02:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4734 transitions. [2020-12-22 06:02:00,706 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4734 transitions. Word has length 76 [2020-12-22 06:02:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:00,707 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 4734 transitions. [2020-12-22 06:02:00,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4734 transitions. [2020-12-22 06:02:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:02:00,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:00,711 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] [2020-12-22 06:02:00,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:02:00,711 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 06:02:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1371725127, now seen corresponding path program 1 times [2020-12-22 06:02:00,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:00,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467971980] [2020-12-22 06:02:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:00,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467971980] [2020-12-22 06:02:00,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:00,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:00,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558988075] [2020-12-22 06:02:00,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:00,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:00,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:00,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:00,834 INFO L87 Difference]: Start difference. First operand 2543 states and 4734 transitions. Second operand 6 states. [2020-12-22 06:02:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:01,159 INFO L93 Difference]: Finished difference Result 5043 states and 9409 transitions. [2020-12-22 06:02:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:01,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 06:02:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:01,168 INFO L225 Difference]: With dead ends: 5043 [2020-12-22 06:02:01,168 INFO L226 Difference]: Without dead ends: 2558 [2020-12-22 06:02:01,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:02:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2020-12-22 06:02:01,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2543. [2020-12-22 06:02:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-12-22 06:02:01,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4733 transitions. [2020-12-22 06:02:01,310 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4733 transitions. Word has length 77 [2020-12-22 06:02:01,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:01,310 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 4733 transitions. [2020-12-22 06:02:01,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4733 transitions. [2020-12-22 06:02:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:02:01,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:01,313 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] [2020-12-22 06:02:01,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:02:01,314 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 06:02:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:01,314 INFO L82 PathProgramCache]: Analyzing trace with hash 638306648, now seen corresponding path program 1 times [2020-12-22 06:02:01,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:01,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178466579] [2020-12-22 06:02:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:01,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178466579] [2020-12-22 06:02:01,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:01,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:01,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954336500] [2020-12-22 06:02:01,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:01,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:01,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:01,432 INFO L87 Difference]: Start difference. First operand 2543 states and 4733 transitions. Second operand 4 states. [2020-12-22 06:02:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:02,626 INFO L93 Difference]: Finished difference Result 7035 states and 13176 transitions. [2020-12-22 06:02:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:02,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 06:02:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:02,642 INFO L225 Difference]: With dead ends: 7035 [2020-12-22 06:02:02,642 INFO L226 Difference]: Without dead ends: 4556 [2020-12-22 06:02:02,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:02,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-12-22 06:02:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 2543. [2020-12-22 06:02:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-12-22 06:02:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4727 transitions. [2020-12-22 06:02:02,876 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4727 transitions. Word has length 78 [2020-12-22 06:02:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:02,876 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 4727 transitions. [2020-12-22 06:02:02,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4727 transitions. [2020-12-22 06:02:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:02:02,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:02,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:02,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:02:02,880 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 06:02:02,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:02,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1704791170, now seen corresponding path program 1 times [2020-12-22 06:02:02,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:02,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331022528] [2020-12-22 06:02:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:02,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331022528] [2020-12-22 06:02:02,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:02,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:02,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225562632] [2020-12-22 06:02:02,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:02,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:02,992 INFO L87 Difference]: Start difference. First operand 2543 states and 4727 transitions. Second operand 4 states. [2020-12-22 06:02:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:04,013 INFO L93 Difference]: Finished difference Result 7035 states and 13165 transitions. [2020-12-22 06:02:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:04,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 06:02:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:04,028 INFO L225 Difference]: With dead ends: 7035 [2020-12-22 06:02:04,028 INFO L226 Difference]: Without dead ends: 4556 [2020-12-22 06:02:04,034 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 06:02:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-12-22 06:02:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 2543. [2020-12-22 06:02:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-12-22 06:02:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4721 transitions. [2020-12-22 06:02:04,198 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4721 transitions. Word has length 80 [2020-12-22 06:02:04,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:04,198 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 4721 transitions. [2020-12-22 06:02:04,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:04,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4721 transitions. [2020-12-22 06:02:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:02:04,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:04,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:04,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:02:04,201 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 06:02:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 292891470, now seen corresponding path program 1 times [2020-12-22 06:02:04,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:04,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723806258] [2020-12-22 06:02:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:04,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723806258] [2020-12-22 06:02:04,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:04,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:04,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271242682] [2020-12-22 06:02:04,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:04,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:04,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:04,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:04,291 INFO L87 Difference]: Start difference. First operand 2543 states and 4721 transitions. Second operand 4 states. [2020-12-22 06:02:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:05,355 INFO L93 Difference]: Finished difference Result 7035 states and 13154 transitions. [2020-12-22 06:02:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:05,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 06:02:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:05,372 INFO L225 Difference]: With dead ends: 7035 [2020-12-22 06:02:05,373 INFO L226 Difference]: Without dead ends: 4556 [2020-12-22 06:02:05,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-12-22 06:02:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 2543. [2020-12-22 06:02:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-12-22 06:02:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4715 transitions. [2020-12-22 06:02:05,544 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4715 transitions. Word has length 82 [2020-12-22 06:02:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:05,545 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 4715 transitions. [2020-12-22 06:02:05,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4715 transitions. [2020-12-22 06:02:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:02:05,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:05,548 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] [2020-12-22 06:02:05,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:02:05,548 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 06:02:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:05,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1372412446, now seen corresponding path program 1 times [2020-12-22 06:02:05,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:05,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721716896] [2020-12-22 06:02:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:05,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721716896] [2020-12-22 06:02:05,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:05,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:05,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875239873] [2020-12-22 06:02:05,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:05,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:05,661 INFO L87 Difference]: Start difference. First operand 2543 states and 4715 transitions. Second operand 4 states. [2020-12-22 06:02:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:06,691 INFO L93 Difference]: Finished difference Result 7035 states and 13143 transitions. [2020-12-22 06:02:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:06,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-22 06:02:06,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:06,701 INFO L225 Difference]: With dead ends: 7035 [2020-12-22 06:02:06,702 INFO L226 Difference]: Without dead ends: 4556 [2020-12-22 06:02:06,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-12-22 06:02:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 2543. [2020-12-22 06:02:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-12-22 06:02:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4709 transitions. [2020-12-22 06:02:06,886 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4709 transitions. Word has length 84 [2020-12-22 06:02:06,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:06,887 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 4709 transitions. [2020-12-22 06:02:06,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4709 transitions. [2020-12-22 06:02:06,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:02:06,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:06,890 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 06:02:06,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:02:06,891 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 06:02:06,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:06,891 INFO L82 PathProgramCache]: Analyzing trace with hash 772472772, now seen corresponding path program 1 times [2020-12-22 06:02:06,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:06,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777160273] [2020-12-22 06:02:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:07,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777160273] [2020-12-22 06:02:07,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:07,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:07,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232885025] [2020-12-22 06:02:07,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:07,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:07,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:07,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:07,027 INFO L87 Difference]: Start difference. First operand 2543 states and 4709 transitions. Second operand 6 states. [2020-12-22 06:02:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:10,391 INFO L93 Difference]: Finished difference Result 26929 states and 50260 transitions. [2020-12-22 06:02:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:02:10,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-12-22 06:02:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:10,437 INFO L225 Difference]: With dead ends: 26929 [2020-12-22 06:02:10,437 INFO L226 Difference]: Without dead ends: 24468 [2020-12-22 06:02:10,451 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 06:02:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24468 states. [2020-12-22 06:02:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24468 to 5010. [2020-12-22 06:02:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5010 states. [2020-12-22 06:02:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 9306 transitions. [2020-12-22 06:02:11,199 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 9306 transitions. Word has length 86 [2020-12-22 06:02:11,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:11,200 INFO L481 AbstractCegarLoop]: Abstraction has 5010 states and 9306 transitions. [2020-12-22 06:02:11,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 9306 transitions. [2020-12-22 06:02:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:02:11,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:11,205 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 06:02:11,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:02:11,206 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 06:02:11,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:11,206 INFO L82 PathProgramCache]: Analyzing trace with hash -603961180, now seen corresponding path program 1 times [2020-12-22 06:02:11,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:11,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391053714] [2020-12-22 06:02:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:11,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391053714] [2020-12-22 06:02:11,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:11,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:11,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264992799] [2020-12-22 06:02:11,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:11,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:11,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:11,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:11,289 INFO L87 Difference]: Start difference. First operand 5010 states and 9306 transitions. Second operand 5 states. [2020-12-22 06:02:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:13,409 INFO L93 Difference]: Finished difference Result 19943 states and 37101 transitions. [2020-12-22 06:02:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:13,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:02:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:13,433 INFO L225 Difference]: With dead ends: 19943 [2020-12-22 06:02:13,433 INFO L226 Difference]: Without dead ends: 15081 [2020-12-22 06:02:13,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:13,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15081 states. [2020-12-22 06:02:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15081 to 5022. [2020-12-22 06:02:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5022 states. [2020-12-22 06:02:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 9318 transitions. [2020-12-22 06:02:13,868 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 9318 transitions. Word has length 88 [2020-12-22 06:02:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:13,868 INFO L481 AbstractCegarLoop]: Abstraction has 5022 states and 9318 transitions. [2020-12-22 06:02:13,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 9318 transitions. [2020-12-22 06:02:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:02:13,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:13,874 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 06:02:13,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:02:13,874 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 06:02:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash 259114207, now seen corresponding path program 1 times [2020-12-22 06:02:13,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:13,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724766056] [2020-12-22 06:02:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:13,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724766056] [2020-12-22 06:02:13,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:13,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:13,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862825610] [2020-12-22 06:02:13,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:13,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:13,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:13,947 INFO L87 Difference]: Start difference. First operand 5022 states and 9318 transitions. Second operand 5 states. [2020-12-22 06:02:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:14,377 INFO L93 Difference]: Finished difference Result 9976 states and 18545 transitions. [2020-12-22 06:02:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:14,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:02:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:14,384 INFO L225 Difference]: With dead ends: 9976 [2020-12-22 06:02:14,384 INFO L226 Difference]: Without dead ends: 5033 [2020-12-22 06:02:14,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5033 states. [2020-12-22 06:02:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5033 to 5018. [2020-12-22 06:02:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5018 states. [2020-12-22 06:02:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 9308 transitions. [2020-12-22 06:02:14,704 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 9308 transitions. Word has length 88 [2020-12-22 06:02:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:14,704 INFO L481 AbstractCegarLoop]: Abstraction has 5018 states and 9308 transitions. [2020-12-22 06:02:14,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 9308 transitions. [2020-12-22 06:02:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:02:14,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:14,710 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] [2020-12-22 06:02:14,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:02:14,710 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 06:02:14,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:14,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2061004475, now seen corresponding path program 1 times [2020-12-22 06:02:14,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:14,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327460731] [2020-12-22 06:02:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:14,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327460731] [2020-12-22 06:02:14,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:14,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:14,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830973627] [2020-12-22 06:02:14,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:14,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:14,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:14,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:14,775 INFO L87 Difference]: Start difference. First operand 5018 states and 9308 transitions. Second operand 4 states. [2020-12-22 06:02:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:16,633 INFO L93 Difference]: Finished difference Result 17376 states and 32339 transitions. [2020-12-22 06:02:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:16,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-12-22 06:02:16,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:16,649 INFO L225 Difference]: With dead ends: 17376 [2020-12-22 06:02:16,649 INFO L226 Difference]: Without dead ends: 12463 [2020-12-22 06:02:16,657 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 06:02:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12463 states. [2020-12-22 06:02:17,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12463 to 6912. [2020-12-22 06:02:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6912 states. [2020-12-22 06:02:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 12686 transitions. [2020-12-22 06:02:17,035 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 12686 transitions. Word has length 89 [2020-12-22 06:02:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:17,036 INFO L481 AbstractCegarLoop]: Abstraction has 6912 states and 12686 transitions. [2020-12-22 06:02:17,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 12686 transitions. [2020-12-22 06:02:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:02:17,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:17,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:17,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:02:17,040 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:17,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1575079927, now seen corresponding path program 1 times [2020-12-22 06:02:17,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:17,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32583269] [2020-12-22 06:02:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:17,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32583269] [2020-12-22 06:02:17,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:17,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:17,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10002523] [2020-12-22 06:02:17,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:17,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:17,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:17,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:17,099 INFO L87 Difference]: Start difference. First operand 6912 states and 12686 transitions. Second operand 5 states. [2020-12-22 06:02:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:17,389 INFO L93 Difference]: Finished difference Result 10332 states and 18973 transitions. [2020-12-22 06:02:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:17,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 06:02:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:17,394 INFO L225 Difference]: With dead ends: 10332 [2020-12-22 06:02:17,394 INFO L226 Difference]: Without dead ends: 3450 [2020-12-22 06:02:17,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2020-12-22 06:02:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3450. [2020-12-22 06:02:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3450 states. [2020-12-22 06:02:17,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 6322 transitions. [2020-12-22 06:02:17,602 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 6322 transitions. Word has length 89 [2020-12-22 06:02:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:17,603 INFO L481 AbstractCegarLoop]: Abstraction has 3450 states and 6322 transitions. [2020-12-22 06:02:17,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 6322 transitions. [2020-12-22 06:02:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:02:17,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:17,605 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] [2020-12-22 06:02:17,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:02:17,605 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:17,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:17,606 INFO L82 PathProgramCache]: Analyzing trace with hash -729666801, now seen corresponding path program 1 times [2020-12-22 06:02:17,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:17,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443652019] [2020-12-22 06:02:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:17,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443652019] [2020-12-22 06:02:17,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:17,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:17,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932572544] [2020-12-22 06:02:17,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:17,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:17,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:17,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:17,672 INFO L87 Difference]: Start difference. First operand 3450 states and 6322 transitions. Second operand 5 states. [2020-12-22 06:02:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:18,899 INFO L93 Difference]: Finished difference Result 24636 states and 45488 transitions. [2020-12-22 06:02:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:18,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-12-22 06:02:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:18,930 INFO L225 Difference]: With dead ends: 24636 [2020-12-22 06:02:18,930 INFO L226 Difference]: Without dead ends: 21258 [2020-12-22 06:02:18,938 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 06:02:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21258 states. [2020-12-22 06:02:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21258 to 6295. [2020-12-22 06:02:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6295 states. [2020-12-22 06:02:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 11602 transitions. [2020-12-22 06:02:19,326 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 11602 transitions. Word has length 91 [2020-12-22 06:02:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:19,326 INFO L481 AbstractCegarLoop]: Abstraction has 6295 states and 11602 transitions. [2020-12-22 06:02:19,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 11602 transitions. [2020-12-22 06:02:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:02:19,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:19,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:19,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:02:19,329 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:19,330 INFO L82 PathProgramCache]: Analyzing trace with hash -454907187, now seen corresponding path program 1 times [2020-12-22 06:02:19,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:19,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759114843] [2020-12-22 06:02:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:19,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759114843] [2020-12-22 06:02:19,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:19,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:19,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263629016] [2020-12-22 06:02:19,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:19,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:19,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:19,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:19,412 INFO L87 Difference]: Start difference. First operand 6295 states and 11602 transitions. Second operand 6 states. [2020-12-22 06:02:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:20,503 INFO L93 Difference]: Finished difference Result 11398 states and 20918 transitions. [2020-12-22 06:02:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:02:20,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-12-22 06:02:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:20,516 INFO L225 Difference]: With dead ends: 11398 [2020-12-22 06:02:20,517 INFO L226 Difference]: Without dead ends: 8692 [2020-12-22 06:02:20,523 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 06:02:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2020-12-22 06:02:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 6285. [2020-12-22 06:02:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6285 states. [2020-12-22 06:02:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 11582 transitions. [2020-12-22 06:02:20,839 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 11582 transitions. Word has length 91 [2020-12-22 06:02:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:20,839 INFO L481 AbstractCegarLoop]: Abstraction has 6285 states and 11582 transitions. [2020-12-22 06:02:20,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 11582 transitions. [2020-12-22 06:02:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:02:20,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:20,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:20,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:02:20,841 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:20,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1636743277, now seen corresponding path program 1 times [2020-12-22 06:02:20,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:20,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659909425] [2020-12-22 06:02:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:20,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659909425] [2020-12-22 06:02:20,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:20,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:20,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077123376] [2020-12-22 06:02:20,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:20,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:20,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:20,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:20,920 INFO L87 Difference]: Start difference. First operand 6285 states and 11582 transitions. Second operand 5 states. [2020-12-22 06:02:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:22,095 INFO L93 Difference]: Finished difference Result 19253 states and 35498 transitions. [2020-12-22 06:02:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:02:22,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 06:02:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:22,117 INFO L225 Difference]: With dead ends: 19253 [2020-12-22 06:02:22,121 INFO L226 Difference]: Without dead ends: 16553 [2020-12-22 06:02:22,129 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 06:02:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16553 states. [2020-12-22 06:02:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16553 to 8724. [2020-12-22 06:02:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8724 states. [2020-12-22 06:02:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8724 states to 8724 states and 16059 transitions. [2020-12-22 06:02:22,719 INFO L78 Accepts]: Start accepts. Automaton has 8724 states and 16059 transitions. Word has length 93 [2020-12-22 06:02:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:22,719 INFO L481 AbstractCegarLoop]: Abstraction has 8724 states and 16059 transitions. [2020-12-22 06:02:22,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 8724 states and 16059 transitions. [2020-12-22 06:02:22,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:02:22,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:22,721 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] [2020-12-22 06:02:22,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:02:22,722 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:22,722 INFO L82 PathProgramCache]: Analyzing trace with hash -830657945, now seen corresponding path program 1 times [2020-12-22 06:02:22,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:22,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251030422] [2020-12-22 06:02:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:22,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251030422] [2020-12-22 06:02:22,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:22,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:22,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278617947] [2020-12-22 06:02:22,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:22,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:22,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:22,796 INFO L87 Difference]: Start difference. First operand 8724 states and 16059 transitions. Second operand 5 states. [2020-12-22 06:02:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:23,612 INFO L93 Difference]: Finished difference Result 18140 states and 33262 transitions. [2020-12-22 06:02:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:23,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 06:02:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:23,629 INFO L225 Difference]: With dead ends: 18140 [2020-12-22 06:02:23,629 INFO L226 Difference]: Without dead ends: 13218 [2020-12-22 06:02:23,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13218 states. [2020-12-22 06:02:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13218 to 8741. [2020-12-22 06:02:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8741 states. [2020-12-22 06:02:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 16072 transitions. [2020-12-22 06:02:24,218 INFO L78 Accepts]: Start accepts. Automaton has 8741 states and 16072 transitions. Word has length 95 [2020-12-22 06:02:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:24,218 INFO L481 AbstractCegarLoop]: Abstraction has 8741 states and 16072 transitions. [2020-12-22 06:02:24,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 8741 states and 16072 transitions. [2020-12-22 06:02:24,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:02:24,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:24,221 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] [2020-12-22 06:02:24,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:02:24,221 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:24,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:24,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1062181365, now seen corresponding path program 1 times [2020-12-22 06:02:24,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:24,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032267738] [2020-12-22 06:02:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:24,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032267738] [2020-12-22 06:02:24,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:24,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:24,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100694034] [2020-12-22 06:02:24,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:24,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:24,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:24,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:24,306 INFO L87 Difference]: Start difference. First operand 8741 states and 16072 transitions. Second operand 5 states. [2020-12-22 06:02:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:25,478 INFO L93 Difference]: Finished difference Result 19940 states and 36781 transitions. [2020-12-22 06:02:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:25,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-12-22 06:02:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:25,496 INFO L225 Difference]: With dead ends: 19940 [2020-12-22 06:02:25,496 INFO L226 Difference]: Without dead ends: 12763 [2020-12-22 06:02:25,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12763 states. [2020-12-22 06:02:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12763 to 8741. [2020-12-22 06:02:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8741 states. [2020-12-22 06:02:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 15972 transitions. [2020-12-22 06:02:26,005 INFO L78 Accepts]: Start accepts. Automaton has 8741 states and 15972 transitions. Word has length 102 [2020-12-22 06:02:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:26,005 INFO L481 AbstractCegarLoop]: Abstraction has 8741 states and 15972 transitions. [2020-12-22 06:02:26,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 8741 states and 15972 transitions. [2020-12-22 06:02:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:02:26,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:26,008 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] [2020-12-22 06:02:26,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:02:26,008 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:26,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1346860968, now seen corresponding path program 1 times [2020-12-22 06:02:26,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:26,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47123875] [2020-12-22 06:02:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:26,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47123875] [2020-12-22 06:02:26,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:26,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:26,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138416971] [2020-12-22 06:02:26,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:26,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:26,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:26,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:26,099 INFO L87 Difference]: Start difference. First operand 8741 states and 15972 transitions. Second operand 6 states. [2020-12-22 06:02:26,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:26,802 INFO L93 Difference]: Finished difference Result 14029 states and 25521 transitions. [2020-12-22 06:02:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:26,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-12-22 06:02:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:26,812 INFO L225 Difference]: With dead ends: 14029 [2020-12-22 06:02:26,812 INFO L226 Difference]: Without dead ends: 8756 [2020-12-22 06:02:26,817 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 06:02:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2020-12-22 06:02:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 8741. [2020-12-22 06:02:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8741 states. [2020-12-22 06:02:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 15870 transitions. [2020-12-22 06:02:27,390 INFO L78 Accepts]: Start accepts. Automaton has 8741 states and 15870 transitions. Word has length 102 [2020-12-22 06:02:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:27,390 INFO L481 AbstractCegarLoop]: Abstraction has 8741 states and 15870 transitions. [2020-12-22 06:02:27,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 8741 states and 15870 transitions. [2020-12-22 06:02:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 06:02:27,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:27,392 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] [2020-12-22 06:02:27,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:02:27,393 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash -493659028, now seen corresponding path program 1 times [2020-12-22 06:02:27,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:27,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364793056] [2020-12-22 06:02:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:27,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364793056] [2020-12-22 06:02:27,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:27,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:27,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282817273] [2020-12-22 06:02:27,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:27,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:27,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:27,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:27,481 INFO L87 Difference]: Start difference. First operand 8741 states and 15870 transitions. Second operand 5 states. [2020-12-22 06:02:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:28,113 INFO L93 Difference]: Finished difference Result 13666 states and 24769 transitions. [2020-12-22 06:02:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:28,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-12-22 06:02:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:28,125 INFO L225 Difference]: With dead ends: 13666 [2020-12-22 06:02:28,125 INFO L226 Difference]: Without dead ends: 8764 [2020-12-22 06:02:28,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2020-12-22 06:02:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 8741. [2020-12-22 06:02:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8741 states. [2020-12-22 06:02:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 15855 transitions. [2020-12-22 06:02:28,660 INFO L78 Accepts]: Start accepts. Automaton has 8741 states and 15855 transitions. Word has length 103 [2020-12-22 06:02:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:28,660 INFO L481 AbstractCegarLoop]: Abstraction has 8741 states and 15855 transitions. [2020-12-22 06:02:28,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 8741 states and 15855 transitions. [2020-12-22 06:02:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 06:02:28,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:28,662 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] [2020-12-22 06:02:28,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:02:28,663 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:28,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1080465042, now seen corresponding path program 1 times [2020-12-22 06:02:28,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:28,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919373274] [2020-12-22 06:02:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:28,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919373274] [2020-12-22 06:02:28,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:28,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:28,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205347557] [2020-12-22 06:02:28,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:28,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:28,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:28,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:28,739 INFO L87 Difference]: Start difference. First operand 8741 states and 15855 transitions. Second operand 3 states. [2020-12-22 06:02:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:29,384 INFO L93 Difference]: Finished difference Result 15794 states and 28634 transitions. [2020-12-22 06:02:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:29,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-22 06:02:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:29,396 INFO L225 Difference]: With dead ends: 15794 [2020-12-22 06:02:29,396 INFO L226 Difference]: Without dead ends: 8719 [2020-12-22 06:02:29,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2020-12-22 06:02:29,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 8719. [2020-12-22 06:02:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8719 states. [2020-12-22 06:02:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8719 states to 8719 states and 15813 transitions. [2020-12-22 06:02:29,967 INFO L78 Accepts]: Start accepts. Automaton has 8719 states and 15813 transitions. Word has length 103 [2020-12-22 06:02:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:29,967 INFO L481 AbstractCegarLoop]: Abstraction has 8719 states and 15813 transitions. [2020-12-22 06:02:29,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8719 states and 15813 transitions. [2020-12-22 06:02:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:02:29,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:29,970 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] [2020-12-22 06:02:29,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:02:29,970 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:29,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2135151223, now seen corresponding path program 1 times [2020-12-22 06:02:29,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:29,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752914619] [2020-12-22 06:02:29,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:30,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752914619] [2020-12-22 06:02:30,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:30,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:30,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006873607] [2020-12-22 06:02:30,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:30,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:30,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:30,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:30,050 INFO L87 Difference]: Start difference. First operand 8719 states and 15813 transitions. Second operand 5 states. [2020-12-22 06:02:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:32,386 INFO L93 Difference]: Finished difference Result 35048 states and 62397 transitions. [2020-12-22 06:02:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:32,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 06:02:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:32,422 INFO L225 Difference]: With dead ends: 35048 [2020-12-22 06:02:32,422 INFO L226 Difference]: Without dead ends: 30177 [2020-12-22 06:02:32,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:02:32,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30177 states. [2020-12-22 06:02:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30177 to 10626. [2020-12-22 06:02:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10626 states. [2020-12-22 06:02:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10626 states to 10626 states and 18804 transitions. [2020-12-22 06:02:33,371 INFO L78 Accepts]: Start accepts. Automaton has 10626 states and 18804 transitions. Word has length 105 [2020-12-22 06:02:33,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:33,371 INFO L481 AbstractCegarLoop]: Abstraction has 10626 states and 18804 transitions. [2020-12-22 06:02:33,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 10626 states and 18804 transitions. [2020-12-22 06:02:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:02:33,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:33,375 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] [2020-12-22 06:02:33,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:02:33,375 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:33,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:33,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1844508423, now seen corresponding path program 1 times [2020-12-22 06:02:33,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:33,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372681325] [2020-12-22 06:02:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:33,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372681325] [2020-12-22 06:02:33,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:33,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:33,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082179090] [2020-12-22 06:02:33,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:33,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:33,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:33,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:33,513 INFO L87 Difference]: Start difference. First operand 10626 states and 18804 transitions. Second operand 5 states. [2020-12-22 06:02:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:34,713 INFO L93 Difference]: Finished difference Result 17508 states and 31081 transitions. [2020-12-22 06:02:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:34,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-22 06:02:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:34,735 INFO L225 Difference]: With dead ends: 17508 [2020-12-22 06:02:34,735 INFO L226 Difference]: Without dead ends: 17495 [2020-12-22 06:02:34,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:34,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17495 states. [2020-12-22 06:02:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17495 to 10644. [2020-12-22 06:02:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10644 states. [2020-12-22 06:02:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10644 states to 10644 states and 18822 transitions. [2020-12-22 06:02:35,580 INFO L78 Accepts]: Start accepts. Automaton has 10644 states and 18822 transitions. Word has length 105 [2020-12-22 06:02:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:35,580 INFO L481 AbstractCegarLoop]: Abstraction has 10644 states and 18822 transitions. [2020-12-22 06:02:35,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10644 states and 18822 transitions. [2020-12-22 06:02:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:02:35,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:35,583 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] [2020-12-22 06:02:35,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:02:35,583 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1336275788, now seen corresponding path program 1 times [2020-12-22 06:02:35,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:35,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432510908] [2020-12-22 06:02:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:35,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432510908] [2020-12-22 06:02:35,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:35,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:35,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421309315] [2020-12-22 06:02:35,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:35,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:35,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:35,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:35,661 INFO L87 Difference]: Start difference. First operand 10644 states and 18822 transitions. Second operand 6 states. [2020-12-22 06:02:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:36,455 INFO L93 Difference]: Finished difference Result 10663 states and 18840 transitions. [2020-12-22 06:02:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:36,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-12-22 06:02:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:36,472 INFO L225 Difference]: With dead ends: 10663 [2020-12-22 06:02:36,472 INFO L226 Difference]: Without dead ends: 10650 [2020-12-22 06:02:36,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:02:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10650 states. [2020-12-22 06:02:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10650 to 10644. [2020-12-22 06:02:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10644 states. [2020-12-22 06:02:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10644 states to 10644 states and 18812 transitions. [2020-12-22 06:02:37,293 INFO L78 Accepts]: Start accepts. Automaton has 10644 states and 18812 transitions. Word has length 107 [2020-12-22 06:02:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:37,293 INFO L481 AbstractCegarLoop]: Abstraction has 10644 states and 18812 transitions. [2020-12-22 06:02:37,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 10644 states and 18812 transitions. [2020-12-22 06:02:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 06:02:37,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:37,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:37,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:02:37,296 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1717963875, now seen corresponding path program 1 times [2020-12-22 06:02:37,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:37,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887437129] [2020-12-22 06:02:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:37,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887437129] [2020-12-22 06:02:37,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:37,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:37,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92066140] [2020-12-22 06:02:37,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:37,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:37,388 INFO L87 Difference]: Start difference. First operand 10644 states and 18812 transitions. Second operand 5 states. [2020-12-22 06:02:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:39,261 INFO L93 Difference]: Finished difference Result 25276 states and 44438 transitions. [2020-12-22 06:02:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:39,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-12-22 06:02:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:39,281 INFO L225 Difference]: With dead ends: 25276 [2020-12-22 06:02:39,282 INFO L226 Difference]: Without dead ends: 16579 [2020-12-22 06:02:39,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16579 states. [2020-12-22 06:02:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16579 to 10644. [2020-12-22 06:02:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10644 states. [2020-12-22 06:02:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10644 states to 10644 states and 18802 transitions. [2020-12-22 06:02:40,090 INFO L78 Accepts]: Start accepts. Automaton has 10644 states and 18802 transitions. Word has length 114 [2020-12-22 06:02:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:40,091 INFO L481 AbstractCegarLoop]: Abstraction has 10644 states and 18802 transitions. [2020-12-22 06:02:40,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 10644 states and 18802 transitions. [2020-12-22 06:02:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 06:02:40,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:40,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:40,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:02:40,095 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:40,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1626987571, now seen corresponding path program 1 times [2020-12-22 06:02:40,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:40,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101452816] [2020-12-22 06:02:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:40,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101452816] [2020-12-22 06:02:40,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:40,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:40,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527814470] [2020-12-22 06:02:40,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:02:40,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:40,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:02:40,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:40,249 INFO L87 Difference]: Start difference. First operand 10644 states and 18802 transitions. Second operand 7 states. [2020-12-22 06:02:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:46,078 INFO L93 Difference]: Finished difference Result 39584 states and 69995 transitions. [2020-12-22 06:02:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 06:02:46,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-12-22 06:02:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:46,124 INFO L225 Difference]: With dead ends: 39584 [2020-12-22 06:02:46,125 INFO L226 Difference]: Without dead ends: 33213 [2020-12-22 06:02:46,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-12-22 06:02:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33213 states. [2020-12-22 06:02:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33213 to 13598. [2020-12-22 06:02:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13598 states. [2020-12-22 06:02:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13598 states to 13598 states and 24037 transitions. [2020-12-22 06:02:47,494 INFO L78 Accepts]: Start accepts. Automaton has 13598 states and 24037 transitions. Word has length 119 [2020-12-22 06:02:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:47,495 INFO L481 AbstractCegarLoop]: Abstraction has 13598 states and 24037 transitions. [2020-12-22 06:02:47,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:02:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 13598 states and 24037 transitions. [2020-12-22 06:02:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 06:02:47,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:47,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:47,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:02:47,500 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:47,501 INFO L82 PathProgramCache]: Analyzing trace with hash 263416431, now seen corresponding path program 1 times [2020-12-22 06:02:47,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:47,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729004039] [2020-12-22 06:02:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:47,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729004039] [2020-12-22 06:02:47,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:47,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:47,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072192502] [2020-12-22 06:02:47,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:47,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:47,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:47,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:47,623 INFO L87 Difference]: Start difference. First operand 13598 states and 24037 transitions. Second operand 6 states. [2020-12-22 06:02:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,370 INFO L93 Difference]: Finished difference Result 43005 states and 75860 transitions. [2020-12-22 06:02:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:02:51,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-12-22 06:02:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:51,412 INFO L225 Difference]: With dead ends: 43005 [2020-12-22 06:02:51,412 INFO L226 Difference]: Without dead ends: 31228 [2020-12-22 06:02:51,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:02:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31228 states. [2020-12-22 06:02:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31228 to 18944. [2020-12-22 06:02:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18944 states. [2020-12-22 06:02:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18944 states to 18944 states and 33227 transitions. [2020-12-22 06:02:53,217 INFO L78 Accepts]: Start accepts. Automaton has 18944 states and 33227 transitions. Word has length 119 [2020-12-22 06:02:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:53,218 INFO L481 AbstractCegarLoop]: Abstraction has 18944 states and 33227 transitions. [2020-12-22 06:02:53,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18944 states and 33227 transitions. [2020-12-22 06:02:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 06:02:53,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:53,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:53,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:02:53,221 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:53,222 INFO L82 PathProgramCache]: Analyzing trace with hash -813647057, now seen corresponding path program 1 times [2020-12-22 06:02:53,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:53,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096370352] [2020-12-22 06:02:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:53,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096370352] [2020-12-22 06:02:53,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:53,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:53,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833611032] [2020-12-22 06:02:53,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:53,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:53,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:53,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:53,295 INFO L87 Difference]: Start difference. First operand 18944 states and 33227 transitions. Second operand 3 states. [2020-12-22 06:02:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:54,906 INFO L93 Difference]: Finished difference Result 31335 states and 55299 transitions. [2020-12-22 06:02:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:54,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-12-22 06:02:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:54,929 INFO L225 Difference]: With dead ends: 31335 [2020-12-22 06:02:54,930 INFO L226 Difference]: Without dead ends: 16234 [2020-12-22 06:02:54,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16234 states. [2020-12-22 06:02:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16234 to 16221. [2020-12-22 06:02:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16221 states. [2020-12-22 06:02:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16221 states to 16221 states and 29016 transitions. [2020-12-22 06:02:56,326 INFO L78 Accepts]: Start accepts. Automaton has 16221 states and 29016 transitions. Word has length 119 [2020-12-22 06:02:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:56,326 INFO L481 AbstractCegarLoop]: Abstraction has 16221 states and 29016 transitions. [2020-12-22 06:02:56,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 16221 states and 29016 transitions. [2020-12-22 06:02:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 06:02:56,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:56,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:56,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:02:56,331 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash 565902333, now seen corresponding path program 1 times [2020-12-22 06:02:56,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:56,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876940096] [2020-12-22 06:02:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:56,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876940096] [2020-12-22 06:02:56,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:56,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:56,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978277596] [2020-12-22 06:02:56,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:56,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:56,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:56,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:56,432 INFO L87 Difference]: Start difference. First operand 16221 states and 29016 transitions. Second operand 5 states. [2020-12-22 06:02:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:59,274 INFO L93 Difference]: Finished difference Result 46880 states and 83854 transitions. [2020-12-22 06:02:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:59,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-12-22 06:02:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:59,320 INFO L225 Difference]: With dead ends: 46880 [2020-12-22 06:02:59,320 INFO L226 Difference]: Without dead ends: 32353 [2020-12-22 06:02:59,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32353 states. [2020-12-22 06:03:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32353 to 32353. [2020-12-22 06:03:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32353 states. [2020-12-22 06:03:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32353 states to 32353 states and 57900 transitions. [2020-12-22 06:03:02,245 INFO L78 Accepts]: Start accepts. Automaton has 32353 states and 57900 transitions. Word has length 120 [2020-12-22 06:03:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:02,246 INFO L481 AbstractCegarLoop]: Abstraction has 32353 states and 57900 transitions. [2020-12-22 06:03:02,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 32353 states and 57900 transitions. [2020-12-22 06:03:02,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 06:03:02,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:02,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:02,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:03:02,251 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:02,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1009679480, now seen corresponding path program 1 times [2020-12-22 06:03:02,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:02,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982875350] [2020-12-22 06:03:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:02,309 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 06:03:02,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982875350] [2020-12-22 06:03:02,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:02,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:02,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423361159] [2020-12-22 06:03:02,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:02,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:02,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:02,311 INFO L87 Difference]: Start difference. First operand 32353 states and 57900 transitions. Second operand 5 states. [2020-12-22 06:03:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:04,950 INFO L93 Difference]: Finished difference Result 61345 states and 109663 transitions. [2020-12-22 06:03:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:03:04,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-12-22 06:03:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:04,989 INFO L225 Difference]: With dead ends: 61345 [2020-12-22 06:03:04,989 INFO L226 Difference]: Without dead ends: 30677 [2020-12-22 06:03:05,006 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 06:03:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30677 states. [2020-12-22 06:03:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30677 to 30677. [2020-12-22 06:03:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30677 states. [2020-12-22 06:03:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30677 states to 30677 states and 54833 transitions. [2020-12-22 06:03:07,924 INFO L78 Accepts]: Start accepts. Automaton has 30677 states and 54833 transitions. Word has length 121 [2020-12-22 06:03:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:07,924 INFO L481 AbstractCegarLoop]: Abstraction has 30677 states and 54833 transitions. [2020-12-22 06:03:07,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 30677 states and 54833 transitions. [2020-12-22 06:03:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 06:03:07,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:07,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:07,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 06:03:07,928 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:07,928 INFO L82 PathProgramCache]: Analyzing trace with hash -651224904, now seen corresponding path program 1 times [2020-12-22 06:03:07,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:07,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799061522] [2020-12-22 06:03:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:08,067 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 06:03:08,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799061522] [2020-12-22 06:03:08,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:08,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:08,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389428806] [2020-12-22 06:03:08,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:08,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:08,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:08,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:08,069 INFO L87 Difference]: Start difference. First operand 30677 states and 54833 transitions. Second operand 7 states. [2020-12-22 06:03:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:12,443 INFO L93 Difference]: Finished difference Result 51997 states and 93637 transitions. [2020-12-22 06:03:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:12,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-12-22 06:03:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:12,514 INFO L225 Difference]: With dead ends: 51997 [2020-12-22 06:03:12,514 INFO L226 Difference]: Without dead ends: 51982 [2020-12-22 06:03:12,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:03:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51982 states. [2020-12-22 06:03:15,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51982 to 30743. [2020-12-22 06:03:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30743 states. [2020-12-22 06:03:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30743 states to 30743 states and 54877 transitions. [2020-12-22 06:03:15,785 INFO L78 Accepts]: Start accepts. Automaton has 30743 states and 54877 transitions. Word has length 122 [2020-12-22 06:03:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:15,785 INFO L481 AbstractCegarLoop]: Abstraction has 30743 states and 54877 transitions. [2020-12-22 06:03:15,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 30743 states and 54877 transitions. [2020-12-22 06:03:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 06:03:15,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:15,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:15,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 06:03:15,789 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1671071108, now seen corresponding path program 1 times [2020-12-22 06:03:15,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:15,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641418409] [2020-12-22 06:03:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:15,897 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 06:03:15,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641418409] [2020-12-22 06:03:15,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:15,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:15,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225318792] [2020-12-22 06:03:15,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:15,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:15,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:15,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:15,899 INFO L87 Difference]: Start difference. First operand 30743 states and 54877 transitions. Second operand 7 states. [2020-12-22 06:03:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:30,472 INFO L93 Difference]: Finished difference Result 193994 states and 352007 transitions. [2020-12-22 06:03:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:03:30,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-12-22 06:03:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:30,773 INFO L225 Difference]: With dead ends: 193994 [2020-12-22 06:03:30,774 INFO L226 Difference]: Without dead ends: 164971 [2020-12-22 06:03:30,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:03:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164971 states. [2020-12-22 06:03:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164971 to 61004. [2020-12-22 06:03:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61004 states. [2020-12-22 06:03:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61004 states to 61004 states and 108955 transitions. [2020-12-22 06:03:37,771 INFO L78 Accepts]: Start accepts. Automaton has 61004 states and 108955 transitions. Word has length 138 [2020-12-22 06:03:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:37,772 INFO L481 AbstractCegarLoop]: Abstraction has 61004 states and 108955 transitions. [2020-12-22 06:03:37,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 61004 states and 108955 transitions. [2020-12-22 06:03:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 06:03:37,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:37,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:37,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 06:03:37,780 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash 663461615, now seen corresponding path program 1 times [2020-12-22 06:03:37,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:37,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872739803] [2020-12-22 06:03:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:37,852 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 06:03:37,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872739803] [2020-12-22 06:03:37,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:37,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:37,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233581110] [2020-12-22 06:03:37,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:37,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:37,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:37,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:37,854 INFO L87 Difference]: Start difference. First operand 61004 states and 108955 transitions. Second operand 3 states. [2020-12-22 06:03:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:47,911 INFO L93 Difference]: Finished difference Result 159514 states and 286243 transitions. [2020-12-22 06:03:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:47,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-22 06:03:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:48,093 INFO L225 Difference]: With dead ends: 159514 [2020-12-22 06:03:48,093 INFO L226 Difference]: Without dead ends: 101293 [2020-12-22 06:03:48,306 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 06:03:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101293 states. [2020-12-22 06:03:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101293 to 59846. [2020-12-22 06:03:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59846 states. [2020-12-22 06:03:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59846 states to 59846 states and 106671 transitions. [2020-12-22 06:03:54,665 INFO L78 Accepts]: Start accepts. Automaton has 59846 states and 106671 transitions. Word has length 139 [2020-12-22 06:03:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:54,665 INFO L481 AbstractCegarLoop]: Abstraction has 59846 states and 106671 transitions. [2020-12-22 06:03:54,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 59846 states and 106671 transitions. [2020-12-22 06:03:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 06:03:54,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:54,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:54,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 06:03:54,672 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:54,673 INFO L82 PathProgramCache]: Analyzing trace with hash 580253490, now seen corresponding path program 1 times [2020-12-22 06:03:54,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:54,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732088144] [2020-12-22 06:03:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:54,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732088144] [2020-12-22 06:03:54,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:54,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:54,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435662593] [2020-12-22 06:03:54,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:54,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:54,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:54,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:54,758 INFO L87 Difference]: Start difference. First operand 59846 states and 106671 transitions. Second operand 5 states. [2020-12-22 06:04:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:02,988 INFO L93 Difference]: Finished difference Result 131791 states and 231256 transitions. [2020-12-22 06:04:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:04:02,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-12-22 06:04:02,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:03,088 INFO L225 Difference]: With dead ends: 131791 [2020-12-22 06:04:03,088 INFO L226 Difference]: Without dead ends: 72178 [2020-12-22 06:04:03,127 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 06:04:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72178 states. [2020-12-22 06:04:09,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72178 to 60113. [2020-12-22 06:04:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60113 states. [2020-12-22 06:04:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60113 states to 60113 states and 106938 transitions. [2020-12-22 06:04:09,188 INFO L78 Accepts]: Start accepts. Automaton has 60113 states and 106938 transitions. Word has length 148 [2020-12-22 06:04:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:09,193 INFO L481 AbstractCegarLoop]: Abstraction has 60113 states and 106938 transitions. [2020-12-22 06:04:09,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 60113 states and 106938 transitions. [2020-12-22 06:04:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 06:04:09,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:09,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:09,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 06:04:09,205 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:09,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1208925759, now seen corresponding path program 1 times [2020-12-22 06:04:09,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:09,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836476345] [2020-12-22 06:04:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:09,287 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 06:04:09,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836476345] [2020-12-22 06:04:09,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:09,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:09,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742808560] [2020-12-22 06:04:09,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:09,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:09,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:09,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:09,289 INFO L87 Difference]: Start difference. First operand 60113 states and 106938 transitions. Second operand 4 states. [2020-12-22 06:04:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:19,394 INFO L93 Difference]: Finished difference Result 157307 states and 278940 transitions. [2020-12-22 06:04:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:04:19,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-12-22 06:04:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:19,526 INFO L225 Difference]: With dead ends: 157307 [2020-12-22 06:04:19,526 INFO L226 Difference]: Without dead ends: 97257 [2020-12-22 06:04:19,566 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 06:04:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97257 states. [2020-12-22 06:04:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97257 to 48990. [2020-12-22 06:04:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48990 states. [2020-12-22 06:04:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48990 states to 48990 states and 86650 transitions. [2020-12-22 06:04:25,214 INFO L78 Accepts]: Start accepts. Automaton has 48990 states and 86650 transitions. Word has length 149 [2020-12-22 06:04:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:25,215 INFO L481 AbstractCegarLoop]: Abstraction has 48990 states and 86650 transitions. [2020-12-22 06:04:25,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 48990 states and 86650 transitions. [2020-12-22 06:04:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 06:04:25,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:25,218 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 06:04:25,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 06:04:25,218 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:25,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:25,218 INFO L82 PathProgramCache]: Analyzing trace with hash 537858221, now seen corresponding path program 1 times [2020-12-22 06:04:25,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:25,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818313114] [2020-12-22 06:04:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:25,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818313114] [2020-12-22 06:04:25,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:25,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:25,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104796101] [2020-12-22 06:04:25,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:25,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:25,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:25,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:25,310 INFO L87 Difference]: Start difference. First operand 48990 states and 86650 transitions. Second operand 5 states. [2020-12-22 06:04:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:30,552 INFO L93 Difference]: Finished difference Result 97768 states and 173022 transitions. [2020-12-22 06:04:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:04:30,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-12-22 06:04:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:30,620 INFO L225 Difference]: With dead ends: 97768 [2020-12-22 06:04:30,620 INFO L226 Difference]: Without dead ends: 49005 [2020-12-22 06:04:30,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:04:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49005 states. [2020-12-22 06:04:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49005 to 48870. [2020-12-22 06:04:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48870 states. [2020-12-22 06:04:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48870 states to 48870 states and 86450 transitions. [2020-12-22 06:04:36,080 INFO L78 Accepts]: Start accepts. Automaton has 48870 states and 86450 transitions. Word has length 178 [2020-12-22 06:04:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:36,080 INFO L481 AbstractCegarLoop]: Abstraction has 48870 states and 86450 transitions. [2020-12-22 06:04:36,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 48870 states and 86450 transitions. [2020-12-22 06:04:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-22 06:04:36,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:36,085 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, 1, 1] [2020-12-22 06:04:36,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-22 06:04:36,086 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:36,086 INFO L82 PathProgramCache]: Analyzing trace with hash 214181523, now seen corresponding path program 1 times [2020-12-22 06:04:36,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:36,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062237390] [2020-12-22 06:04:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:36,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062237390] [2020-12-22 06:04:36,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:36,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:36,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156130359] [2020-12-22 06:04:36,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:36,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:36,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:36,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:36,233 INFO L87 Difference]: Start difference. First operand 48870 states and 86450 transitions. Second operand 5 states. [2020-12-22 06:04:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:43,462 INFO L93 Difference]: Finished difference Result 108447 states and 191614 transitions. [2020-12-22 06:04:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:04:43,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-12-22 06:04:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:43,559 INFO L225 Difference]: With dead ends: 108447 [2020-12-22 06:04:43,559 INFO L226 Difference]: Without dead ends: 59804 [2020-12-22 06:04:43,588 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 06:04:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59804 states. [2020-12-22 06:04:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59804 to 51150. [2020-12-22 06:04:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51150 states. [2020-12-22 06:04:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51150 states to 51150 states and 90010 transitions. [2020-12-22 06:04:49,473 INFO L78 Accepts]: Start accepts. Automaton has 51150 states and 90010 transitions. Word has length 180 [2020-12-22 06:04:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:49,473 INFO L481 AbstractCegarLoop]: Abstraction has 51150 states and 90010 transitions. [2020-12-22 06:04:49,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand 51150 states and 90010 transitions. [2020-12-22 06:04:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-22 06:04:49,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:49,477 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, 1, 1, 1] [2020-12-22 06:04:49,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 06:04:49,477 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash 6919755, now seen corresponding path program 1 times [2020-12-22 06:04:49,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:49,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959104359] [2020-12-22 06:04:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:49,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959104359] [2020-12-22 06:04:49,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:49,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:49,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924214260] [2020-12-22 06:04:49,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:49,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:49,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:49,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:49,593 INFO L87 Difference]: Start difference. First operand 51150 states and 90010 transitions. Second operand 5 states. [2020-12-22 06:04:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:59,912 INFO L93 Difference]: Finished difference Result 143824 states and 255781 transitions. [2020-12-22 06:04:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:59,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-12-22 06:04:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:00,056 INFO L225 Difference]: With dead ends: 143824 [2020-12-22 06:05:00,056 INFO L226 Difference]: Without dead ends: 92730 [2020-12-22 06:05:00,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:05:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92730 states. [2020-12-22 06:05:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92730 to 51150. [2020-12-22 06:05:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51150 states. [2020-12-22 06:05:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51150 states to 51150 states and 89183 transitions. [2020-12-22 06:05:06,471 INFO L78 Accepts]: Start accepts. Automaton has 51150 states and 89183 transitions. Word has length 181 [2020-12-22 06:05:06,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:06,471 INFO L481 AbstractCegarLoop]: Abstraction has 51150 states and 89183 transitions. [2020-12-22 06:05:06,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:06,472 INFO L276 IsEmpty]: Start isEmpty. Operand 51150 states and 89183 transitions. [2020-12-22 06:05:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-22 06:05:06,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:06,475 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, 1, 1, 1] [2020-12-22 06:05:06,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 06:05:06,475 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:06,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1036279053, now seen corresponding path program 1 times [2020-12-22 06:05:06,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:06,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927584026] [2020-12-22 06:05:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:06,583 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 06:05:06,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927584026] [2020-12-22 06:05:06,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:06,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:06,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150996407] [2020-12-22 06:05:06,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:06,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:06,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:06,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:06,586 INFO L87 Difference]: Start difference. First operand 51150 states and 89183 transitions. Second operand 4 states.