/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:55:56,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:55:56,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:55:56,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 08:55:56,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:55:56,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:55:56,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:55:56,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:55:56,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:55:56,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:55:56,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:55:56,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:55:56,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:55:56,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:55:56,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:55:56,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:55:56,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:55:56,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:55:56,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:55:56,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:55:56,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:55:56,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:55:56,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:55:56,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:55:56,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:55:56,863 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:55:56,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:55:56,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:55:56,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:55:56,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:55:56,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:55:56,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:55:56,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:55:56,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:55:56,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:55:56,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:55:56,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:55:56,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:55:56,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:55:56,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:55:56,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:55:56,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:55:56,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:55:56,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:55:56,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:55:56,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:55:56,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:55:57,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:55:57,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:55:57,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:55:57,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:55:57,320 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:55:57,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-12-22 08:55:57,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f908d5b15/9c9932c9197a49ee9ba07505fbb33d7b/FLAG41fc2eb18 [2020-12-22 08:55:58,119 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:55:58,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-12-22 08:55:58,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f908d5b15/9c9932c9197a49ee9ba07505fbb33d7b/FLAG41fc2eb18 [2020-12-22 08:55:58,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f908d5b15/9c9932c9197a49ee9ba07505fbb33d7b [2020-12-22 08:55:58,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:55:58,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:55:58,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:55:58,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:55:58,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:55:58,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:55:58" (1/1) ... [2020-12-22 08:55:58,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4518d9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:58, skipping insertion in model container [2020-12-22 08:55:58,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:55:58" (1/1) ... [2020-12-22 08:55:58,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:55:58,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:55:58,744 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7229,7242] [2020-12-22 08:55:58,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:55:58,836 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:55:58,913 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7229,7242] [2020-12-22 08:55:58,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:55:59,036 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:55:59,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59 WrapperNode [2020-12-22 08:55:59,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:55:59,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:55:59,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:55:59,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:55:59,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:55:59,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:55:59,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:55:59,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:55:59,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (1/1) ... [2020-12-22 08:55:59,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:55:59,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:55:59,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:55:59,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:55:59,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (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 08:55:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:55:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:55:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:55:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:56:00,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:56:00,584 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:56:00,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:00 BoogieIcfgContainer [2020-12-22 08:56:00,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:56:00,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:56:00,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:56:00,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:56:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:55:58" (1/3) ... [2020-12-22 08:56:00,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb46fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:00, skipping insertion in model container [2020-12-22 08:56:00,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:59" (2/3) ... [2020-12-22 08:56:00,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb46fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:00, skipping insertion in model container [2020-12-22 08:56:00,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:00" (3/3) ... [2020-12-22 08:56:00,596 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2020-12-22 08:56:00,603 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:56:00,608 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:56:00,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:56:00,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:56:00,688 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:56:00,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:56:00,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:56:00,689 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:56:00,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:56:00,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:56:00,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:56:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-12-22 08:56:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 08:56:00,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:00,741 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 08:56:00,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:00,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:00,751 INFO L82 PathProgramCache]: Analyzing trace with hash -313177950, now seen corresponding path program 1 times [2020-12-22 08:56:00,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:00,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259729558] [2020-12-22 08:56:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:01,377 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 08:56:01,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259729558] [2020-12-22 08:56:01,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:01,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:01,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703531289] [2020-12-22 08:56:01,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:01,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:01,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:01,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:01,406 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 3 states. [2020-12-22 08:56:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:01,501 INFO L93 Difference]: Finished difference Result 294 states and 484 transitions. [2020-12-22 08:56:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:01,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 08:56:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:01,520 INFO L225 Difference]: With dead ends: 294 [2020-12-22 08:56:01,520 INFO L226 Difference]: Without dead ends: 205 [2020-12-22 08:56:01,524 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 08:56:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-22 08:56:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-12-22 08:56:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-22 08:56:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 292 transitions. [2020-12-22 08:56:01,592 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 292 transitions. Word has length 86 [2020-12-22 08:56:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:01,592 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 292 transitions. [2020-12-22 08:56:01,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 292 transitions. [2020-12-22 08:56:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:56:01,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:01,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:01,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:56:01,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash 982762601, now seen corresponding path program 1 times [2020-12-22 08:56:01,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:01,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106549960] [2020-12-22 08:56:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:01,858 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 08:56:01,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106549960] [2020-12-22 08:56:01,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:01,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:01,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045525534] [2020-12-22 08:56:01,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:01,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:01,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:01,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:01,866 INFO L87 Difference]: Start difference. First operand 203 states and 292 transitions. Second operand 3 states. [2020-12-22 08:56:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:01,962 INFO L93 Difference]: Finished difference Result 487 states and 744 transitions. [2020-12-22 08:56:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:01,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 08:56:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:01,967 INFO L225 Difference]: With dead ends: 487 [2020-12-22 08:56:01,967 INFO L226 Difference]: Without dead ends: 337 [2020-12-22 08:56:01,969 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 08:56:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-12-22 08:56:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2020-12-22 08:56:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-12-22 08:56:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 502 transitions. [2020-12-22 08:56:02,046 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 502 transitions. Word has length 87 [2020-12-22 08:56:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:02,047 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 502 transitions. [2020-12-22 08:56:02,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 502 transitions. [2020-12-22 08:56:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 08:56:02,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:02,056 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, 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 08:56:02,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:56:02,057 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:02,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:02,059 INFO L82 PathProgramCache]: Analyzing trace with hash 914543768, now seen corresponding path program 1 times [2020-12-22 08:56:02,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:02,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044479119] [2020-12-22 08:56:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:02,184 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 08:56:02,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044479119] [2020-12-22 08:56:02,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:02,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:02,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695990228] [2020-12-22 08:56:02,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:02,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:02,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:02,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:02,187 INFO L87 Difference]: Start difference. First operand 335 states and 502 transitions. Second operand 3 states. [2020-12-22 08:56:02,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:02,300 INFO L93 Difference]: Finished difference Result 867 states and 1348 transitions. [2020-12-22 08:56:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:02,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 08:56:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:02,309 INFO L225 Difference]: With dead ends: 867 [2020-12-22 08:56:02,309 INFO L226 Difference]: Without dead ends: 585 [2020-12-22 08:56:02,314 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 08:56:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-12-22 08:56:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2020-12-22 08:56:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-12-22 08:56:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 894 transitions. [2020-12-22 08:56:02,400 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 894 transitions. Word has length 88 [2020-12-22 08:56:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:02,401 INFO L481 AbstractCegarLoop]: Abstraction has 583 states and 894 transitions. [2020-12-22 08:56:02,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 894 transitions. [2020-12-22 08:56:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 08:56:02,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:02,405 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 08:56:02,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:56:02,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:02,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:02,406 INFO L82 PathProgramCache]: Analyzing trace with hash 349801040, now seen corresponding path program 1 times [2020-12-22 08:56:02,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:02,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635985339] [2020-12-22 08:56:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:02,532 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 08:56:02,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635985339] [2020-12-22 08:56:02,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:02,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:02,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768133771] [2020-12-22 08:56:02,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:02,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:02,536 INFO L87 Difference]: Start difference. First operand 583 states and 894 transitions. Second operand 3 states. [2020-12-22 08:56:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:02,629 INFO L93 Difference]: Finished difference Result 1579 states and 2472 transitions. [2020-12-22 08:56:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:02,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 08:56:02,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:02,637 INFO L225 Difference]: With dead ends: 1579 [2020-12-22 08:56:02,637 INFO L226 Difference]: Without dead ends: 1049 [2020-12-22 08:56:02,639 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 08:56:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-12-22 08:56:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1047. [2020-12-22 08:56:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-12-22 08:56:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1622 transitions. [2020-12-22 08:56:02,703 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1622 transitions. Word has length 89 [2020-12-22 08:56:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:02,703 INFO L481 AbstractCegarLoop]: Abstraction has 1047 states and 1622 transitions. [2020-12-22 08:56:02,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1622 transitions. [2020-12-22 08:56:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 08:56:02,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:02,706 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] [2020-12-22 08:56:02,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:56:02,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash -248220501, now seen corresponding path program 1 times [2020-12-22 08:56:02,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:02,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096879261] [2020-12-22 08:56:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:02,801 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 08:56:02,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096879261] [2020-12-22 08:56:02,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:02,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:02,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023645470] [2020-12-22 08:56:02,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:02,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:02,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:02,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:02,804 INFO L87 Difference]: Start difference. First operand 1047 states and 1622 transitions. Second operand 3 states. [2020-12-22 08:56:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:02,946 INFO L93 Difference]: Finished difference Result 2907 states and 4552 transitions. [2020-12-22 08:56:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:02,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 08:56:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:02,959 INFO L225 Difference]: With dead ends: 2907 [2020-12-22 08:56:02,959 INFO L226 Difference]: Without dead ends: 1913 [2020-12-22 08:56:02,962 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 08:56:02,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-12-22 08:56:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1911. [2020-12-22 08:56:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1911 states. [2020-12-22 08:56:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2966 transitions. [2020-12-22 08:56:03,082 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2966 transitions. Word has length 90 [2020-12-22 08:56:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:03,084 INFO L481 AbstractCegarLoop]: Abstraction has 1911 states and 2966 transitions. [2020-12-22 08:56:03,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2966 transitions. [2020-12-22 08:56:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 08:56:03,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:03,089 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 08:56:03,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:56:03,090 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1910770737, now seen corresponding path program 1 times [2020-12-22 08:56:03,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:03,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825739781] [2020-12-22 08:56:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:03,241 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 08:56:03,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825739781] [2020-12-22 08:56:03,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:03,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:03,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469045261] [2020-12-22 08:56:03,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:03,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:03,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:03,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:03,245 INFO L87 Difference]: Start difference. First operand 1911 states and 2966 transitions. Second operand 3 states. [2020-12-22 08:56:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:03,491 INFO L93 Difference]: Finished difference Result 5371 states and 8376 transitions. [2020-12-22 08:56:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:03,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 08:56:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:03,516 INFO L225 Difference]: With dead ends: 5371 [2020-12-22 08:56:03,517 INFO L226 Difference]: Without dead ends: 3513 [2020-12-22 08:56:03,521 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 08:56:03,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3513 states. [2020-12-22 08:56:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3513 to 3511. [2020-12-22 08:56:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3511 states. [2020-12-22 08:56:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5430 transitions. [2020-12-22 08:56:03,776 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5430 transitions. Word has length 91 [2020-12-22 08:56:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:03,776 INFO L481 AbstractCegarLoop]: Abstraction has 3511 states and 5430 transitions. [2020-12-22 08:56:03,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5430 transitions. [2020-12-22 08:56:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 08:56:03,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:03,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:03,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:56:03,778 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash 307326139, now seen corresponding path program 1 times [2020-12-22 08:56:03,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:03,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439701928] [2020-12-22 08:56:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:03,961 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 08:56:03,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439701928] [2020-12-22 08:56:03,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:03,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:03,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439012387] [2020-12-22 08:56:03,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:03,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:03,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:03,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:03,973 INFO L87 Difference]: Start difference. First operand 3511 states and 5430 transitions. Second operand 3 states. [2020-12-22 08:56:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:04,376 INFO L93 Difference]: Finished difference Result 9915 states and 15352 transitions. [2020-12-22 08:56:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:04,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 08:56:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:04,414 INFO L225 Difference]: With dead ends: 9915 [2020-12-22 08:56:04,414 INFO L226 Difference]: Without dead ends: 6457 [2020-12-22 08:56:04,423 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 08:56:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2020-12-22 08:56:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6455. [2020-12-22 08:56:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6455 states. [2020-12-22 08:56:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6455 states to 6455 states and 9910 transitions. [2020-12-22 08:56:04,854 INFO L78 Accepts]: Start accepts. Automaton has 6455 states and 9910 transitions. Word has length 92 [2020-12-22 08:56:04,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:04,855 INFO L481 AbstractCegarLoop]: Abstraction has 6455 states and 9910 transitions. [2020-12-22 08:56:04,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:04,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6455 states and 9910 transitions. [2020-12-22 08:56:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:04,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:04,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:04,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:56:04,857 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:04,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:04,857 INFO L82 PathProgramCache]: Analyzing trace with hash -450885343, now seen corresponding path program 1 times [2020-12-22 08:56:04,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:04,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790766965] [2020-12-22 08:56:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:05,095 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 08:56:05,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790766965] [2020-12-22 08:56:05,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:05,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:05,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136464246] [2020-12-22 08:56:05,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:05,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:05,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:05,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:05,098 INFO L87 Difference]: Start difference. First operand 6455 states and 9910 transitions. Second operand 6 states. [2020-12-22 08:56:06,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:06,376 INFO L93 Difference]: Finished difference Result 19195 states and 29496 transitions. [2020-12-22 08:56:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:06,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-22 08:56:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:06,462 INFO L225 Difference]: With dead ends: 19195 [2020-12-22 08:56:06,462 INFO L226 Difference]: Without dead ends: 12793 [2020-12-22 08:56:06,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:56:06,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12793 states. [2020-12-22 08:56:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12793 to 12791. [2020-12-22 08:56:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12791 states. [2020-12-22 08:56:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12791 states to 12791 states and 19574 transitions. [2020-12-22 08:56:07,613 INFO L78 Accepts]: Start accepts. Automaton has 12791 states and 19574 transitions. Word has length 93 [2020-12-22 08:56:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:07,613 INFO L481 AbstractCegarLoop]: Abstraction has 12791 states and 19574 transitions. [2020-12-22 08:56:07,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 12791 states and 19574 transitions. [2020-12-22 08:56:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:07,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:07,614 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 08:56:07,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:56:07,615 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:07,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:07,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1897914938, now seen corresponding path program 1 times [2020-12-22 08:56:07,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:07,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539984398] [2020-12-22 08:56:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:56:07,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539984398] [2020-12-22 08:56:07,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:07,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:07,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030135096] [2020-12-22 08:56:07,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:07,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:07,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:07,767 INFO L87 Difference]: Start difference. First operand 12791 states and 19574 transitions. Second operand 6 states. [2020-12-22 08:56:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:09,632 INFO L93 Difference]: Finished difference Result 38139 states and 58360 transitions. [2020-12-22 08:56:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:09,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-22 08:56:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:09,706 INFO L225 Difference]: With dead ends: 38139 [2020-12-22 08:56:09,706 INFO L226 Difference]: Without dead ends: 25401 [2020-12-22 08:56:09,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:56:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25401 states. [2020-12-22 08:56:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25401 to 25399. [2020-12-22 08:56:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25399 states. [2020-12-22 08:56:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25399 states to 25399 states and 38710 transitions. [2020-12-22 08:56:11,629 INFO L78 Accepts]: Start accepts. Automaton has 25399 states and 38710 transitions. Word has length 93 [2020-12-22 08:56:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:11,629 INFO L481 AbstractCegarLoop]: Abstraction has 25399 states and 38710 transitions. [2020-12-22 08:56:11,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 25399 states and 38710 transitions. [2020-12-22 08:56:11,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:11,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:11,631 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 08:56:11,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:56:11,631 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:11,632 INFO L82 PathProgramCache]: Analyzing trace with hash 932980801, now seen corresponding path program 1 times [2020-12-22 08:56:11,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:11,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870088376] [2020-12-22 08:56:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:11,792 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 08:56:11,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870088376] [2020-12-22 08:56:11,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:11,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:11,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784656566] [2020-12-22 08:56:11,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:11,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:11,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:11,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:11,795 INFO L87 Difference]: Start difference. First operand 25399 states and 38710 transitions. Second operand 6 states. [2020-12-22 08:56:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:14,789 INFO L93 Difference]: Finished difference Result 75835 states and 115512 transitions. [2020-12-22 08:56:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:14,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-22 08:56:14,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:14,965 INFO L225 Difference]: With dead ends: 75835 [2020-12-22 08:56:14,966 INFO L226 Difference]: Without dead ends: 50489 [2020-12-22 08:56:15,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:56:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50489 states. [2020-12-22 08:56:18,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50489 to 50487. [2020-12-22 08:56:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50487 states. [2020-12-22 08:56:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50487 states to 50487 states and 76598 transitions. [2020-12-22 08:56:18,717 INFO L78 Accepts]: Start accepts. Automaton has 50487 states and 76598 transitions. Word has length 93 [2020-12-22 08:56:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:18,717 INFO L481 AbstractCegarLoop]: Abstraction has 50487 states and 76598 transitions. [2020-12-22 08:56:18,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 50487 states and 76598 transitions. [2020-12-22 08:56:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:18,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:18,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:18,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:56:18,720 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:18,720 INFO L82 PathProgramCache]: Analyzing trace with hash -2088118490, now seen corresponding path program 1 times [2020-12-22 08:56:18,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:18,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047161055] [2020-12-22 08:56:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:18,814 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 08:56:18,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047161055] [2020-12-22 08:56:18,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:18,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:56:18,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294388879] [2020-12-22 08:56:18,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:56:18,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:18,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:56:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:56:18,818 INFO L87 Difference]: Start difference. First operand 50487 states and 76598 transitions. Second operand 5 states. [2020-12-22 08:56:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:21,488 INFO L93 Difference]: Finished difference Result 100921 states and 153143 transitions. [2020-12-22 08:56:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:21,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 08:56:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:21,587 INFO L225 Difference]: With dead ends: 100921 [2020-12-22 08:56:21,587 INFO L226 Difference]: Without dead ends: 50487 [2020-12-22 08:56:21,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:56:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50487 states. [2020-12-22 08:56:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50487 to 50487. [2020-12-22 08:56:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50487 states. [2020-12-22 08:56:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50487 states to 50487 states and 76086 transitions. [2020-12-22 08:56:24,712 INFO L78 Accepts]: Start accepts. Automaton has 50487 states and 76086 transitions. Word has length 93 [2020-12-22 08:56:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:24,712 INFO L481 AbstractCegarLoop]: Abstraction has 50487 states and 76086 transitions. [2020-12-22 08:56:24,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:56:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 50487 states and 76086 transitions. [2020-12-22 08:56:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:24,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:24,713 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 08:56:24,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:56:24,713 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash -760733301, now seen corresponding path program 1 times [2020-12-22 08:56:24,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:24,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698958943] [2020-12-22 08:56:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:24,802 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 08:56:24,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698958943] [2020-12-22 08:56:24,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:24,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:56:24,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434225544] [2020-12-22 08:56:24,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:56:24,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:24,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:56:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:56:24,805 INFO L87 Difference]: Start difference. First operand 50487 states and 76086 transitions. Second operand 5 states. [2020-12-22 08:56:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:28,251 INFO L93 Difference]: Finished difference Result 100921 states and 152119 transitions. [2020-12-22 08:56:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:28,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 08:56:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:28,333 INFO L225 Difference]: With dead ends: 100921 [2020-12-22 08:56:28,334 INFO L226 Difference]: Without dead ends: 50487 [2020-12-22 08:56:28,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:56:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50487 states. [2020-12-22 08:56:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50487 to 50487. [2020-12-22 08:56:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50487 states. [2020-12-22 08:56:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50487 states to 50487 states and 75574 transitions. [2020-12-22 08:56:31,639 INFO L78 Accepts]: Start accepts. Automaton has 50487 states and 75574 transitions. Word has length 93 [2020-12-22 08:56:31,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:31,639 INFO L481 AbstractCegarLoop]: Abstraction has 50487 states and 75574 transitions. [2020-12-22 08:56:31,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:56:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 50487 states and 75574 transitions. [2020-12-22 08:56:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:31,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:31,640 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 08:56:31,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:56:31,640 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash 960597574, now seen corresponding path program 1 times [2020-12-22 08:56:31,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:31,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99510344] [2020-12-22 08:56:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:31,847 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 08:56:31,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99510344] [2020-12-22 08:56:31,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:31,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:56:31,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624006879] [2020-12-22 08:56:31,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:56:31,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:31,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:56:31,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:56:31,851 INFO L87 Difference]: Start difference. First operand 50487 states and 75574 transitions. Second operand 9 states. [2020-12-22 08:57:17,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:17,265 INFO L93 Difference]: Finished difference Result 756563 states and 1132868 transitions. [2020-12-22 08:57:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:57:17,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 08:57:17,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:18,939 INFO L225 Difference]: With dead ends: 756563 [2020-12-22 08:57:18,939 INFO L226 Difference]: Without dead ends: 706129 [2020-12-22 08:57:19,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:57:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706129 states. [2020-12-22 08:57:35,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706129 to 100919. [2020-12-22 08:57:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100919 states. [2020-12-22 08:57:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100919 states to 100919 states and 149046 transitions. [2020-12-22 08:57:35,503 INFO L78 Accepts]: Start accepts. Automaton has 100919 states and 149046 transitions. Word has length 93 [2020-12-22 08:57:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:35,504 INFO L481 AbstractCegarLoop]: Abstraction has 100919 states and 149046 transitions. [2020-12-22 08:57:35,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 100919 states and 149046 transitions. [2020-12-22 08:57:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:57:35,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:35,505 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 08:57:35,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:57:35,505 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:35,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:35,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1205518302, now seen corresponding path program 1 times [2020-12-22 08:57:35,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:35,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587281703] [2020-12-22 08:57:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:35,632 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 08:57:35,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587281703] [2020-12-22 08:57:35,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:35,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:57:35,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744906920] [2020-12-22 08:57:35,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:57:35,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:57:35,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:57:35,636 INFO L87 Difference]: Start difference. First operand 100919 states and 149046 transitions. Second operand 3 states. [2020-12-22 08:57:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:51,196 INFO L93 Difference]: Finished difference Result 254267 states and 374072 transitions. [2020-12-22 08:57:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:57:51,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 08:57:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:51,479 INFO L225 Difference]: With dead ends: 254267 [2020-12-22 08:57:51,479 INFO L226 Difference]: Without dead ends: 153401 [2020-12-22 08:57:51,549 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 08:57:51,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153401 states. [2020-12-22 08:58:07,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153401 to 153399. [2020-12-22 08:58:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153399 states. [2020-12-22 08:58:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153399 states to 153399 states and 222006 transitions. [2020-12-22 08:58:08,023 INFO L78 Accepts]: Start accepts. Automaton has 153399 states and 222006 transitions. Word has length 95 [2020-12-22 08:58:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:08,024 INFO L481 AbstractCegarLoop]: Abstraction has 153399 states and 222006 transitions. [2020-12-22 08:58:08,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:58:08,024 INFO L276 IsEmpty]: Start isEmpty. Operand 153399 states and 222006 transitions. [2020-12-22 08:58:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:58:08,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:08,025 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 08:58:08,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:58:08,025 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:08,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1184515647, now seen corresponding path program 1 times [2020-12-22 08:58:08,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:08,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141346858] [2020-12-22 08:58:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:08,787 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 08:58:08,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141346858] [2020-12-22 08:58:08,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:08,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:58:08,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213119831] [2020-12-22 08:58:08,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:58:08,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:58:08,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:58:08,789 INFO L87 Difference]: Start difference. First operand 153399 states and 222006 transitions. Second operand 9 states. [2020-12-22 08:58:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:35,992 INFO L93 Difference]: Finished difference Result 382909 states and 555193 transitions. [2020-12-22 08:58:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:58:35,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-12-22 08:58:35,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:36,404 INFO L225 Difference]: With dead ends: 382909 [2020-12-22 08:58:36,404 INFO L226 Difference]: Without dead ends: 229563 [2020-12-22 08:58:36,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:58:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229563 states. [2020-12-22 08:58:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229563 to 153399. [2020-12-22 08:58:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153399 states. [2020-12-22 08:58:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153399 states to 153399 states and 220982 transitions. [2020-12-22 08:58:57,499 INFO L78 Accepts]: Start accepts. Automaton has 153399 states and 220982 transitions. Word has length 95 [2020-12-22 08:58:57,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:57,500 INFO L481 AbstractCegarLoop]: Abstraction has 153399 states and 220982 transitions. [2020-12-22 08:58:57,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:58:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 153399 states and 220982 transitions. [2020-12-22 08:58:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:58:57,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:57,500 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] [2020-12-22 08:58:57,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:58:57,501 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1294211459, now seen corresponding path program 1 times [2020-12-22 08:58:57,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:57,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247261196] [2020-12-22 08:58:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:57,572 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 08:58:57,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247261196] [2020-12-22 08:58:57,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:57,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:58:57,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727116255] [2020-12-22 08:58:57,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:58:57,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:57,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:58:57,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:58:57,575 INFO L87 Difference]: Start difference. First operand 153399 states and 220982 transitions. Second operand 3 states. [2020-12-22 08:59:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:59:23,438 INFO L93 Difference]: Finished difference Result 355645 states and 513338 transitions. [2020-12-22 08:59:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:59:23,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 08:59:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:59:23,995 INFO L225 Difference]: With dead ends: 355645 [2020-12-22 08:59:23,995 INFO L226 Difference]: Without dead ends: 202299 [2020-12-22 08:59:24,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 08:59:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202299 states.