/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:10:40,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:10:40,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:10:40,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:10:40,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:10:40,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:10:40,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:10:40,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:10:40,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:10:40,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:10:40,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:10:40,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:10:40,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:10:40,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:10:40,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:10:40,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:10:40,698 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:10:40,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:10:40,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:10:40,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:10:40,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:10:40,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:10:40,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:10:40,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:10:40,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:10:40,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:10:40,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:10:40,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:10:40,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:10:40,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:10:40,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:10:40,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:10:40,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:10:40,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:10:40,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:10:40,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:10:40,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:10:40,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:10:40,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:10:40,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:10:40,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:10:40,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:10:40,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:10:40,910 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:10:40,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-01-10 01:10:40,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4367812/3008d9b695c848589de62e1abc6386e2/FLAG1fa2a323d [2022-01-10 01:10:41,328 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:10:41,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-01-10 01:10:41,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4367812/3008d9b695c848589de62e1abc6386e2/FLAG1fa2a323d [2022-01-10 01:10:41,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a4367812/3008d9b695c848589de62e1abc6386e2 [2022-01-10 01:10:41,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:10:41,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:10:41,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:10:41,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:10:41,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:10:41,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:10:41" (1/1) ... [2022-01-10 01:10:41,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f359fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:41, skipping insertion in model container [2022-01-10 01:10:41,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:10:41" (1/1) ... [2022-01-10 01:10:41,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:10:41,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:10:42,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c[28194,28207] [2022-01-10 01:10:42,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:10:42,062 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:10:42,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c[28194,28207] [2022-01-10 01:10:42,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:10:42,121 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:10:42,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42 WrapperNode [2022-01-10 01:10:42,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:10:42,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:10:42,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:10:42,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:10:42,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,177 INFO L137 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 951 [2022-01-10 01:10:42,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:10:42,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:10:42,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:10:42,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:10:42,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:10:42,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:10:42,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:10:42,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:10:42,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (1/1) ... [2022-01-10 01:10:42,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:10:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:10:42,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:10:42,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:10:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:10:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:10:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:10:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:10:42,479 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:10:42,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:10:43,189 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:10:43,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:10:43,196 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 01:10:43,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:10:43 BoogieIcfgContainer [2022-01-10 01:10:43,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:10:43,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:10:43,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:10:43,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:10:43,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:10:41" (1/3) ... [2022-01-10 01:10:43,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af3110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:10:43, skipping insertion in model container [2022-01-10 01:10:43,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:42" (2/3) ... [2022-01-10 01:10:43,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af3110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:10:43, skipping insertion in model container [2022-01-10 01:10:43,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:10:43" (3/3) ... [2022-01-10 01:10:43,204 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-01-10 01:10:43,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:10:43,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:10:43,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:10:43,243 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:10:43,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:10:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 304 states, 302 states have (on average 1.8079470198675496) internal successors, (546), 303 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 01:10:43,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:43,266 INFO L514 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] [2022-01-10 01:10:43,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:43,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2110216456, now seen corresponding path program 1 times [2022-01-10 01:10:43,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:43,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214489433] [2022-01-10 01:10:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:43,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:43,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:43,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214489433] [2022-01-10 01:10:43,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214489433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:43,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:43,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:10:43,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967369381] [2022-01-10 01:10:43,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:43,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:10:43,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:10:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:10:43,637 INFO L87 Difference]: Start difference. First operand has 304 states, 302 states have (on average 1.8079470198675496) internal successors, (546), 303 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:43,679 INFO L93 Difference]: Finished difference Result 417 states and 738 transitions. [2022-01-10 01:10:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:10:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 01:10:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:43,689 INFO L225 Difference]: With dead ends: 417 [2022-01-10 01:10:43,689 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 01:10:43,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:10:43,694 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:43,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 01:10:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-01-10 01:10:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.8026755852842808) internal successors, (539), 299 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 539 transitions. [2022-01-10 01:10:43,739 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 539 transitions. Word has length 77 [2022-01-10 01:10:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:43,739 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 539 transitions. [2022-01-10 01:10:43,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 539 transitions. [2022-01-10 01:10:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 01:10:43,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:43,742 INFO L514 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] [2022-01-10 01:10:43,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:10:43,743 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2050737334, now seen corresponding path program 1 times [2022-01-10 01:10:43,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:43,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501243973] [2022-01-10 01:10:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:43,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:43,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:43,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501243973] [2022-01-10 01:10:43,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501243973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:43,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:43,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:10:43,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660827981] [2022-01-10 01:10:43,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:43,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:10:43,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:10:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:43,862 INFO L87 Difference]: Start difference. First operand 300 states and 539 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:43,950 INFO L93 Difference]: Finished difference Result 412 states and 728 transitions. [2022-01-10 01:10:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:10:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 01:10:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:43,955 INFO L225 Difference]: With dead ends: 412 [2022-01-10 01:10:43,955 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 01:10:43,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:10:43,961 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 3 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:43,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2103 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 01:10:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-01-10 01:10:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.6622073578595318) internal successors, (497), 299 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 497 transitions. [2022-01-10 01:10:43,977 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 497 transitions. Word has length 77 [2022-01-10 01:10:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:43,979 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 497 transitions. [2022-01-10 01:10:43,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 497 transitions. [2022-01-10 01:10:43,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 01:10:43,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:43,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:43,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:10:43,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash 255571390, now seen corresponding path program 1 times [2022-01-10 01:10:43,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224082705] [2022-01-10 01:10:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:43,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:44,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:44,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224082705] [2022-01-10 01:10:44,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224082705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:44,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:44,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:44,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758857455] [2022-01-10 01:10:44,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:44,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:44,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:44,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:44,132 INFO L87 Difference]: Start difference. First operand 300 states and 497 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:44,161 INFO L93 Difference]: Finished difference Result 505 states and 846 transitions. [2022-01-10 01:10:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-01-10 01:10:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:44,164 INFO L225 Difference]: With dead ends: 505 [2022-01-10 01:10:44,164 INFO L226 Difference]: Without dead ends: 397 [2022-01-10 01:10:44,166 INFO L932 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 [2022-01-10 01:10:44,170 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 156 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:44,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1076 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-01-10 01:10:44,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2022-01-10 01:10:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.6624365482233503) internal successors, (655), 394 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 655 transitions. [2022-01-10 01:10:44,211 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 655 transitions. Word has length 118 [2022-01-10 01:10:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:44,211 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 655 transitions. [2022-01-10 01:10:44,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 655 transitions. [2022-01-10 01:10:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 01:10:44,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:44,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:44,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:10:44,213 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1923540700, now seen corresponding path program 1 times [2022-01-10 01:10:44,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:44,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660504194] [2022-01-10 01:10:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:44,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:44,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660504194] [2022-01-10 01:10:44,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660504194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:44,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:44,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:44,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693871682] [2022-01-10 01:10:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:44,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:44,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:44,275 INFO L87 Difference]: Start difference. First operand 395 states and 655 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:44,292 INFO L93 Difference]: Finished difference Result 593 states and 993 transitions. [2022-01-10 01:10:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:44,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-01-10 01:10:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:44,295 INFO L225 Difference]: With dead ends: 593 [2022-01-10 01:10:44,295 INFO L226 Difference]: Without dead ends: 485 [2022-01-10 01:10:44,296 INFO L932 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 [2022-01-10 01:10:44,296 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 165 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:44,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-10 01:10:44,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2022-01-10 01:10:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.670124481327801) internal successors, (805), 482 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 805 transitions. [2022-01-10 01:10:44,308 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 805 transitions. Word has length 121 [2022-01-10 01:10:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:44,308 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 805 transitions. [2022-01-10 01:10:44,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 805 transitions. [2022-01-10 01:10:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 01:10:44,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:44,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:44,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:10:44,310 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1109580608, now seen corresponding path program 1 times [2022-01-10 01:10:44,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:44,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323940348] [2022-01-10 01:10:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:44,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:44,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:44,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323940348] [2022-01-10 01:10:44,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323940348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:44,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:44,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:44,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993095744] [2022-01-10 01:10:44,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:44,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:44,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:44,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:44,371 INFO L87 Difference]: Start difference. First operand 483 states and 805 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:44,392 INFO L93 Difference]: Finished difference Result 1034 states and 1736 transitions. [2022-01-10 01:10:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:44,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-01-10 01:10:44,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:44,395 INFO L225 Difference]: With dead ends: 1034 [2022-01-10 01:10:44,396 INFO L226 Difference]: Without dead ends: 745 [2022-01-10 01:10:44,396 INFO L932 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 [2022-01-10 01:10:44,397 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 157 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:44,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 1078 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-01-10 01:10:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 743. [2022-01-10 01:10:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.6725067385444743) internal successors, (1241), 742 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1241 transitions. [2022-01-10 01:10:44,421 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1241 transitions. Word has length 121 [2022-01-10 01:10:44,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:44,421 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1241 transitions. [2022-01-10 01:10:44,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1241 transitions. [2022-01-10 01:10:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 01:10:44,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:44,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:44,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:10:44,425 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2073181113, now seen corresponding path program 1 times [2022-01-10 01:10:44,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:44,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589296209] [2022-01-10 01:10:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:44,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:44,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:44,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589296209] [2022-01-10 01:10:44,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589296209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:44,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:44,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:44,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994830216] [2022-01-10 01:10:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:44,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:44,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:44,505 INFO L87 Difference]: Start difference. First operand 743 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:44,527 INFO L93 Difference]: Finished difference Result 1274 states and 2138 transitions. [2022-01-10 01:10:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 01:10:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:44,531 INFO L225 Difference]: With dead ends: 1274 [2022-01-10 01:10:44,531 INFO L226 Difference]: Without dead ends: 985 [2022-01-10 01:10:44,531 INFO L932 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 [2022-01-10 01:10:44,533 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 158 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:44,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1082 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-01-10 01:10:44,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 983. [2022-01-10 01:10:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 982 states have (on average 1.6720977596741344) internal successors, (1642), 982 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1642 transitions. [2022-01-10 01:10:44,556 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1642 transitions. Word has length 124 [2022-01-10 01:10:44,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:44,556 INFO L470 AbstractCegarLoop]: Abstraction has 983 states and 1642 transitions. [2022-01-10 01:10:44,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1642 transitions. [2022-01-10 01:10:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 01:10:44,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:44,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:44,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:10:44,558 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:44,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:44,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1914082347, now seen corresponding path program 1 times [2022-01-10 01:10:44,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:44,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173049921] [2022-01-10 01:10:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:44,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:44,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:44,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173049921] [2022-01-10 01:10:44,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173049921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:44,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:44,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:44,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967997640] [2022-01-10 01:10:44,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:44,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:44,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:44,629 INFO L87 Difference]: Start difference. First operand 983 states and 1642 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:44,658 INFO L93 Difference]: Finished difference Result 2454 states and 4107 transitions. [2022-01-10 01:10:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:44,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 01:10:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:44,664 INFO L225 Difference]: With dead ends: 2454 [2022-01-10 01:10:44,664 INFO L226 Difference]: Without dead ends: 1678 [2022-01-10 01:10:44,665 INFO L932 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 [2022-01-10 01:10:44,667 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 150 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:44,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 1060 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-01-10 01:10:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1676. [2022-01-10 01:10:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1675 states have (on average 1.6644776119402984) internal successors, (2788), 1675 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2788 transitions. [2022-01-10 01:10:44,705 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2788 transitions. Word has length 124 [2022-01-10 01:10:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:44,705 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 2788 transitions. [2022-01-10 01:10:44,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2788 transitions. [2022-01-10 01:10:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 01:10:44,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:44,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:44,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:10:44,745 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:44,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1459354075, now seen corresponding path program 1 times [2022-01-10 01:10:44,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:44,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120553405] [2022-01-10 01:10:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:44,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:44,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:44,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120553405] [2022-01-10 01:10:44,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120553405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:44,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:44,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:44,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570522130] [2022-01-10 01:10:44,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:44,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:44,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:44,795 INFO L87 Difference]: Start difference. First operand 1676 states and 2788 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:44,831 INFO L93 Difference]: Finished difference Result 3061 states and 5111 transitions. [2022-01-10 01:10:44,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:44,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 01:10:44,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:44,838 INFO L225 Difference]: With dead ends: 3061 [2022-01-10 01:10:44,838 INFO L226 Difference]: Without dead ends: 2285 [2022-01-10 01:10:44,839 INFO L932 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 [2022-01-10 01:10:44,840 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 151 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:44,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 1063 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:44,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-01-10 01:10:44,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-01-10 01:10:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2282 states have (on average 1.661262050832603) internal successors, (3791), 2282 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3791 transitions. [2022-01-10 01:10:44,884 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3791 transitions. Word has length 127 [2022-01-10 01:10:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:44,885 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3791 transitions. [2022-01-10 01:10:44,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:44,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3791 transitions. [2022-01-10 01:10:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 01:10:44,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:44,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:44,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:10:44,887 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1832413193, now seen corresponding path program 1 times [2022-01-10 01:10:44,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:44,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102629077] [2022-01-10 01:10:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:44,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:44,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:44,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102629077] [2022-01-10 01:10:44,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102629077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:44,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:44,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:44,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517130242] [2022-01-10 01:10:44,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:44,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:44,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:44,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:44,955 INFO L87 Difference]: Start difference. First operand 2283 states and 3791 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:45,018 INFO L93 Difference]: Finished difference Result 6166 states and 10210 transitions. [2022-01-10 01:10:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:45,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 01:10:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:45,032 INFO L225 Difference]: With dead ends: 6166 [2022-01-10 01:10:45,032 INFO L226 Difference]: Without dead ends: 4103 [2022-01-10 01:10:45,037 INFO L932 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 [2022-01-10 01:10:45,039 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 143 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:45,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 1042 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2022-01-10 01:10:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2022-01-10 01:10:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4100 states have (on average 1.6446341463414633) internal successors, (6743), 4100 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6743 transitions. [2022-01-10 01:10:45,190 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6743 transitions. Word has length 127 [2022-01-10 01:10:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:45,191 INFO L470 AbstractCegarLoop]: Abstraction has 4101 states and 6743 transitions. [2022-01-10 01:10:45,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6743 transitions. [2022-01-10 01:10:45,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 01:10:45,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:45,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:45,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:10:45,193 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:45,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1181394736, now seen corresponding path program 1 times [2022-01-10 01:10:45,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:45,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036113964] [2022-01-10 01:10:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:45,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:45,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:45,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036113964] [2022-01-10 01:10:45,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036113964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:45,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:45,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:45,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841508029] [2022-01-10 01:10:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:45,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:45,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:45,274 INFO L87 Difference]: Start difference. First operand 4101 states and 6743 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:45,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:45,369 INFO L93 Difference]: Finished difference Result 7700 states and 12696 transitions. [2022-01-10 01:10:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:45,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-01-10 01:10:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:45,385 INFO L225 Difference]: With dead ends: 7700 [2022-01-10 01:10:45,385 INFO L226 Difference]: Without dead ends: 5637 [2022-01-10 01:10:45,388 INFO L932 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 [2022-01-10 01:10:45,388 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 144 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:45,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1044 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2022-01-10 01:10:45,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 5635. [2022-01-10 01:10:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5635 states, 5634 states have (on average 1.637912673056443) internal successors, (9228), 5634 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5635 states to 5635 states and 9228 transitions. [2022-01-10 01:10:45,540 INFO L78 Accepts]: Start accepts. Automaton has 5635 states and 9228 transitions. Word has length 130 [2022-01-10 01:10:45,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:45,541 INFO L470 AbstractCegarLoop]: Abstraction has 5635 states and 9228 transitions. [2022-01-10 01:10:45,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5635 states and 9228 transitions. [2022-01-10 01:10:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 01:10:45,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:45,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:45,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:10:45,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash -163814164, now seen corresponding path program 1 times [2022-01-10 01:10:45,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:45,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881398229] [2022-01-10 01:10:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:45,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:45,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:45,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881398229] [2022-01-10 01:10:45,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881398229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:45,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:45,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:10:45,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875823676] [2022-01-10 01:10:45,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:45,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:10:45,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:45,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:10:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:10:45,601 INFO L87 Difference]: Start difference. First operand 5635 states and 9228 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:46,299 INFO L93 Difference]: Finished difference Result 35981 states and 59438 transitions. [2022-01-10 01:10:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:10:46,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-01-10 01:10:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:46,377 INFO L225 Difference]: With dead ends: 35981 [2022-01-10 01:10:46,377 INFO L226 Difference]: Without dead ends: 30579 [2022-01-10 01:10:46,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:10:46,392 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 1750 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:46,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 3477 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:10:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30579 states. [2022-01-10 01:10:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30579 to 10863. [2022-01-10 01:10:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 1.6309151169213774) internal successors, (17715), 10862 states have internal predecessors, (17715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 17715 transitions. [2022-01-10 01:10:46,924 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 17715 transitions. Word has length 130 [2022-01-10 01:10:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:46,924 INFO L470 AbstractCegarLoop]: Abstraction has 10863 states and 17715 transitions. [2022-01-10 01:10:46,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 17715 transitions. [2022-01-10 01:10:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 01:10:46,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:46,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:46,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:10:46,926 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:46,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1417088843, now seen corresponding path program 1 times [2022-01-10 01:10:46,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:46,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473629451] [2022-01-10 01:10:46,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:46,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:46,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:46,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473629451] [2022-01-10 01:10:46,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473629451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:46,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:46,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:46,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640876362] [2022-01-10 01:10:46,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:46,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:46,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:46,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:46,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:46,967 INFO L87 Difference]: Start difference. First operand 10863 states and 17715 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:47,505 INFO L93 Difference]: Finished difference Result 35693 states and 58589 transitions. [2022-01-10 01:10:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:47,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-01-10 01:10:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:47,546 INFO L225 Difference]: With dead ends: 35693 [2022-01-10 01:10:47,546 INFO L226 Difference]: Without dead ends: 25063 [2022-01-10 01:10:47,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:47,563 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 531 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:47,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1467 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25063 states. [2022-01-10 01:10:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25063 to 17908. [2022-01-10 01:10:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17908 states, 17907 states have (on average 1.6314290500921427) internal successors, (29214), 17907 states have internal predecessors, (29214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17908 states to 17908 states and 29214 transitions. [2022-01-10 01:10:48,078 INFO L78 Accepts]: Start accepts. Automaton has 17908 states and 29214 transitions. Word has length 131 [2022-01-10 01:10:48,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:48,079 INFO L470 AbstractCegarLoop]: Abstraction has 17908 states and 29214 transitions. [2022-01-10 01:10:48,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 17908 states and 29214 transitions. [2022-01-10 01:10:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 01:10:48,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:48,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:48,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:10:48,080 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash -945521149, now seen corresponding path program 1 times [2022-01-10 01:10:48,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:48,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632708758] [2022-01-10 01:10:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:48,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:48,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:48,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632708758] [2022-01-10 01:10:48,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632708758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:48,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:48,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:48,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870044046] [2022-01-10 01:10:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:48,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:48,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:48,124 INFO L87 Difference]: Start difference. First operand 17908 states and 29214 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:48,988 INFO L93 Difference]: Finished difference Result 58507 states and 95667 transitions. [2022-01-10 01:10:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:48,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-01-10 01:10:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:49,094 INFO L225 Difference]: With dead ends: 58507 [2022-01-10 01:10:49,094 INFO L226 Difference]: Without dead ends: 40832 [2022-01-10 01:10:49,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:49,127 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 529 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:49,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1603 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40832 states. [2022-01-10 01:10:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40832 to 29281. [2022-01-10 01:10:50,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29281 states, 29280 states have (on average 1.6251024590163934) internal successors, (47583), 29280 states have internal predecessors, (47583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 47583 transitions. [2022-01-10 01:10:50,200 INFO L78 Accepts]: Start accepts. Automaton has 29281 states and 47583 transitions. Word has length 132 [2022-01-10 01:10:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:50,200 INFO L470 AbstractCegarLoop]: Abstraction has 29281 states and 47583 transitions. [2022-01-10 01:10:50,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 29281 states and 47583 transitions. [2022-01-10 01:10:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 01:10:50,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:50,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:50,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:10:50,202 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1002982526, now seen corresponding path program 1 times [2022-01-10 01:10:50,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:50,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79230734] [2022-01-10 01:10:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:50,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:50,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:50,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79230734] [2022-01-10 01:10:50,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79230734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:50,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:50,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:50,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657652002] [2022-01-10 01:10:50,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:50,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:50,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:50,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:50,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:50,257 INFO L87 Difference]: Start difference. First operand 29281 states and 47583 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:51,658 INFO L93 Difference]: Finished difference Result 95313 states and 155241 transitions. [2022-01-10 01:10:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:51,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-01-10 01:10:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:51,780 INFO L225 Difference]: With dead ends: 95313 [2022-01-10 01:10:51,780 INFO L226 Difference]: Without dead ends: 66265 [2022-01-10 01:10:51,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:51,821 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 527 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:51,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 1599 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66265 states. [2022-01-10 01:10:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66265 to 47630. [2022-01-10 01:10:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47630 states, 47629 states have (on average 1.6187616788091288) internal successors, (77100), 47629 states have internal predecessors, (77100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47630 states to 47630 states and 77100 transitions. [2022-01-10 01:10:53,457 INFO L78 Accepts]: Start accepts. Automaton has 47630 states and 77100 transitions. Word has length 133 [2022-01-10 01:10:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:53,457 INFO L470 AbstractCegarLoop]: Abstraction has 47630 states and 77100 transitions. [2022-01-10 01:10:53,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 47630 states and 77100 transitions. [2022-01-10 01:10:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 01:10:53,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:53,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:53,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:10:53,459 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1679686426, now seen corresponding path program 1 times [2022-01-10 01:10:53,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:53,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178015680] [2022-01-10 01:10:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:53,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:53,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:53,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178015680] [2022-01-10 01:10:53,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178015680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:53,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:53,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:53,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985426712] [2022-01-10 01:10:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:53,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:53,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:53,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:53,538 INFO L87 Difference]: Start difference. First operand 47630 states and 77100 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:56,110 INFO L93 Difference]: Finished difference Result 153319 states and 248743 transitions. [2022-01-10 01:10:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-01-10 01:10:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:56,302 INFO L225 Difference]: With dead ends: 153319 [2022-01-10 01:10:56,302 INFO L226 Difference]: Without dead ends: 105922 [2022-01-10 01:10:56,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:56,349 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 525 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:56,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1601 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105922 states. [2022-01-10 01:10:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105922 to 76551. [2022-01-10 01:10:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76551 states, 76550 states have (on average 1.6125538863487916) internal successors, (123441), 76550 states have internal predecessors, (123441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76551 states to 76551 states and 123441 transitions. [2022-01-10 01:10:59,358 INFO L78 Accepts]: Start accepts. Automaton has 76551 states and 123441 transitions. Word has length 134 [2022-01-10 01:10:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 76551 states and 123441 transitions. [2022-01-10 01:10:59,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:10:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 76551 states and 123441 transitions. [2022-01-10 01:10:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 01:10:59,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:59,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:59,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:10:59,360 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1349768178, now seen corresponding path program 1 times [2022-01-10 01:10:59,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:59,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321550666] [2022-01-10 01:10:59,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:59,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:10:59,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:59,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321550666] [2022-01-10 01:10:59,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321550666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:59,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:59,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:10:59,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980139542] [2022-01-10 01:10:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:59,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:10:59,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:10:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:10:59,719 INFO L87 Difference]: Start difference. First operand 76551 states and 123441 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:11:02,095 INFO L93 Difference]: Finished difference Result 152871 states and 246512 transitions. [2022-01-10 01:11:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:11:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-01-10 01:11:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:11:02,221 INFO L225 Difference]: With dead ends: 152871 [2022-01-10 01:11:02,222 INFO L226 Difference]: Without dead ends: 76553 [2022-01-10 01:11:02,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:11:02,281 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 290 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:11:02,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 2334 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:11:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76553 states. [2022-01-10 01:11:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76553 to 76551. [2022-01-10 01:11:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76551 states, 76550 states have (on average 1.604389288047028) internal successors, (122816), 76550 states have internal predecessors, (122816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76551 states to 76551 states and 122816 transitions. [2022-01-10 01:11:04,942 INFO L78 Accepts]: Start accepts. Automaton has 76551 states and 122816 transitions. Word has length 136 [2022-01-10 01:11:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:11:04,942 INFO L470 AbstractCegarLoop]: Abstraction has 76551 states and 122816 transitions. [2022-01-10 01:11:04,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 76551 states and 122816 transitions. [2022-01-10 01:11:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 01:11:04,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:11:04,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:11:04,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:11:04,944 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:11:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:11:04,944 INFO L85 PathProgramCache]: Analyzing trace with hash 412618117, now seen corresponding path program 1 times [2022-01-10 01:11:04,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:11:04,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287321591] [2022-01-10 01:11:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:11:04,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:11:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:11:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:11:05,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:11:05,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287321591] [2022-01-10 01:11:05,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287321591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:11:05,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:11:05,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:11:05,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990938127] [2022-01-10 01:11:05,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:11:05,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:11:05,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:11:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:11:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:11:05,037 INFO L87 Difference]: Start difference. First operand 76551 states and 122816 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:11:09,302 INFO L93 Difference]: Finished difference Result 223797 states and 359508 transitions. [2022-01-10 01:11:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:11:09,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-01-10 01:11:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:11:09,548 INFO L225 Difference]: With dead ends: 223797 [2022-01-10 01:11:09,548 INFO L226 Difference]: Without dead ends: 147479 [2022-01-10 01:11:09,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:11:09,598 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 426 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:11:09,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1886 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:11:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147479 states. [2022-01-10 01:11:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147479 to 147477. [2022-01-10 01:11:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147477 states, 147476 states have (on average 1.5937847514171797) internal successors, (235045), 147476 states have internal predecessors, (235045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147477 states to 147477 states and 235045 transitions. [2022-01-10 01:11:14,833 INFO L78 Accepts]: Start accepts. Automaton has 147477 states and 235045 transitions. Word has length 139 [2022-01-10 01:11:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:11:14,833 INFO L470 AbstractCegarLoop]: Abstraction has 147477 states and 235045 transitions. [2022-01-10 01:11:14,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 147477 states and 235045 transitions. [2022-01-10 01:11:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 01:11:14,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:11:14,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:11:14,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:11:14,835 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:11:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:11:14,836 INFO L85 PathProgramCache]: Analyzing trace with hash -525085605, now seen corresponding path program 1 times [2022-01-10 01:11:14,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:11:14,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320978437] [2022-01-10 01:11:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:11:14,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:11:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:11:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:11:14,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:11:14,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320978437] [2022-01-10 01:11:14,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320978437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:11:14,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:11:14,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:11:14,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910839216] [2022-01-10 01:11:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:11:14,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:11:14,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:11:14,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:11:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:11:14,956 INFO L87 Difference]: Start difference. First operand 147477 states and 235045 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:11:23,367 INFO L93 Difference]: Finished difference Result 285915 states and 451594 transitions. [2022-01-10 01:11:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:11:23,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-01-10 01:11:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:11:24,164 INFO L225 Difference]: With dead ends: 285915 [2022-01-10 01:11:24,165 INFO L226 Difference]: Without dead ends: 285913 [2022-01-10 01:11:24,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:11:24,225 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 493 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:11:24,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 2080 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:11:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285913 states. [2022-01-10 01:11:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285913 to 153285. [2022-01-10 01:11:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153285 states, 153284 states have (on average 1.5711098353383262) internal successors, (240826), 153284 states have internal predecessors, (240826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153285 states to 153285 states and 240826 transitions. [2022-01-10 01:11:31,548 INFO L78 Accepts]: Start accepts. Automaton has 153285 states and 240826 transitions. Word has length 140 [2022-01-10 01:11:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:11:31,549 INFO L470 AbstractCegarLoop]: Abstraction has 153285 states and 240826 transitions. [2022-01-10 01:11:31,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 153285 states and 240826 transitions. [2022-01-10 01:11:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 01:11:31,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:11:31,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:11:31,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:11:31,555 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:11:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:11:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash 304969072, now seen corresponding path program 1 times [2022-01-10 01:11:31,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:11:31,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211207884] [2022-01-10 01:11:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:11:31,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:11:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:11:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:11:31,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:11:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211207884] [2022-01-10 01:11:31,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211207884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:11:31,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:11:31,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:11:31,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103012194] [2022-01-10 01:11:31,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:11:31,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:11:31,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:11:31,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:11:31,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:11:31,620 INFO L87 Difference]: Start difference. First operand 153285 states and 240826 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:11:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:11:44,376 INFO L93 Difference]: Finished difference Result 419787 states and 661759 transitions. [2022-01-10 01:11:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:11:44,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-10 01:11:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:11:45,404 INFO L225 Difference]: With dead ends: 419787 [2022-01-10 01:11:45,404 INFO L226 Difference]: Without dead ends: 352085 [2022-01-10 01:11:45,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:11:45,492 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1180 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:11:45,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 2727 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:11:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352085 states.