/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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:27:30,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:27:30,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:27:30,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:27:30,454 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 02:27:30,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:27:30,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:27:30,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:27:30,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:27:30,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:27:30,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:27:30,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:27:30,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:27:30,496 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:27:30,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:27:30,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:27:30,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:27:30,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:27:30,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:27:30,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:27:30,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:27:30,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:27:30,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:27:30,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:27:30,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:27:30,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:27:30,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:27:30,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:27:30,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:27:30,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:27:30,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:27:30,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:27:30,498 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:27:30,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:27:30,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:27:30,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:27:30,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:27:30,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:27:30,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:27:30,729 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:27:30,732 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:27:30,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-01-10 02:27:30,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c106324c5/de242a83d7ba495a9a85d733d4555898/FLAGdf279e2d7 [2022-01-10 02:27:31,471 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:27:31,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-01-10 02:27:31,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c106324c5/de242a83d7ba495a9a85d733d4555898/FLAGdf279e2d7 [2022-01-10 02:27:31,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c106324c5/de242a83d7ba495a9a85d733d4555898 [2022-01-10 02:27:31,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:27:31,569 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:27:31,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:27:31,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:27:31,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:27:31,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:27:31" (1/1) ... [2022-01-10 02:27:31,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9852ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:31, skipping insertion in model container [2022-01-10 02:27:31,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:27:31" (1/1) ... [2022-01-10 02:27:31,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:27:31,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:27:32,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c[20454,20467] [2022-01-10 02:27:32,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c[27515,27528] [2022-01-10 02:27:32,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:27:32,755 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:27:32,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c[20454,20467] [2022-01-10 02:27:32,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c[27515,27528] [2022-01-10 02:27:33,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:27:33,197 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:27:33,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33 WrapperNode [2022-01-10 02:27:33,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:27:33,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:27:33,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:27:33,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:27:33,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:33,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:33,683 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2022-01-10 02:27:33,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:27:33,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:27:33,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:27:33,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:27:33,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:33,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:33,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:33,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:33,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:33,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:34,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:34,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:27:34,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:27:34,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:27:34,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:27:34,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (1/1) ... [2022-01-10 02:27:34,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:27:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:27:34,221 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 02:27:34,239 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 02:27:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:27:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:27:34,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:27:34,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:27:34,428 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:27:34,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:27:37,708 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:27:37,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:27:37,726 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:27:37,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:27:37 BoogieIcfgContainer [2022-01-10 02:27:37,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:27:37,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:27:37,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:27:37,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:27:37,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:27:31" (1/3) ... [2022-01-10 02:27:37,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46671da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:27:37, skipping insertion in model container [2022-01-10 02:27:37,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:27:33" (2/3) ... [2022-01-10 02:27:37,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46671da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:27:37, skipping insertion in model container [2022-01-10 02:27:37,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:27:37" (3/3) ... [2022-01-10 02:27:37,737 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-01-10 02:27:37,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:27:37,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:27:37,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:27:37,797 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 02:27:37,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:27:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 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 02:27:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 02:27:37,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:37,833 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] [2022-01-10 02:27:37,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -949343158, now seen corresponding path program 1 times [2022-01-10 02:27:37,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:37,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23167505] [2022-01-10 02:27:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:37,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:38,058 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 02:27:38,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:38,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23167505] [2022-01-10 02:27:38,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23167505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:38,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:38,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:27:38,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745241434] [2022-01-10 02:27:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:38,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 02:27:38,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 02:27:38,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 02:27:38,096 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 02:27:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:38,181 INFO L93 Difference]: Finished difference Result 1834 states and 3468 transitions. [2022-01-10 02:27:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 02:27:38,183 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2022-01-10 02:27:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:38,202 INFO L225 Difference]: With dead ends: 1834 [2022-01-10 02:27:38,202 INFO L226 Difference]: Without dead ends: 880 [2022-01-10 02:27:38,208 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 02:27:38,211 INFO L933 BasicCegarLoop]: 1720 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, 1720 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 02:27:38,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-01-10 02:27:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-01-10 02:27:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.8861047835990887) internal successors, (1656), 879 states have internal predecessors, (1656), 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 02:27:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1656 transitions. [2022-01-10 02:27:38,297 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1656 transitions. Word has length 42 [2022-01-10 02:27:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:38,297 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1656 transitions. [2022-01-10 02:27:38,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 02:27:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1656 transitions. [2022-01-10 02:27:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 02:27:38,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:38,303 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] [2022-01-10 02:27:38,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:27:38,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2022-01-10 02:27:38,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830234848] [2022-01-10 02:27:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:38,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:38,387 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 02:27:38,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:38,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830234848] [2022-01-10 02:27:38,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830234848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:38,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:38,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:27:38,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738038892] [2022-01-10 02:27:38,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:38,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:27:38,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:27:38,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:27:38,390 INFO L87 Difference]: Start difference. First operand 880 states and 1656 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 02:27:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:38,491 INFO L93 Difference]: Finished difference Result 954 states and 1771 transitions. [2022-01-10 02:27:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:27:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2022-01-10 02:27:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:38,496 INFO L225 Difference]: With dead ends: 954 [2022-01-10 02:27:38,496 INFO L226 Difference]: Without dead ends: 880 [2022-01-10 02:27:38,496 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 02:27:38,498 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:27:38,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:27:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-01-10 02:27:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-01-10 02:27:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.8291571753986333) internal successors, (1606), 879 states have internal predecessors, (1606), 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 02:27:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1606 transitions. [2022-01-10 02:27:38,514 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1606 transitions. Word has length 42 [2022-01-10 02:27:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:38,515 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1606 transitions. [2022-01-10 02:27:38,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 02:27:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1606 transitions. [2022-01-10 02:27:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 02:27:38,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:38,516 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] [2022-01-10 02:27:38,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:27:38,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash 978466368, now seen corresponding path program 1 times [2022-01-10 02:27:38,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:38,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596942265] [2022-01-10 02:27:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:38,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:38,609 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 02:27:38,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:38,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596942265] [2022-01-10 02:27:38,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596942265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:38,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:38,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:27:38,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125904058] [2022-01-10 02:27:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:38,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:38,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:38,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:38,612 INFO L87 Difference]: Start difference. First operand 880 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 02:27:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:41,830 INFO L93 Difference]: Finished difference Result 2384 states and 4479 transitions. [2022-01-10 02:27:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2022-01-10 02:27:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:41,838 INFO L225 Difference]: With dead ends: 2384 [2022-01-10 02:27:41,838 INFO L226 Difference]: Without dead ends: 1631 [2022-01-10 02:27:41,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:41,841 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 907 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:27:41,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 642 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 02:27:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-01-10 02:27:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-01-10 02:27:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.5868631062001228) internal successors, (2585), 1630 states have internal predecessors, (2585), 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 02:27:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2585 transitions. [2022-01-10 02:27:41,885 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2585 transitions. Word has length 61 [2022-01-10 02:27:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:41,886 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2585 transitions. [2022-01-10 02:27:41,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 02:27:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2585 transitions. [2022-01-10 02:27:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:27:41,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:41,888 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] [2022-01-10 02:27:41,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:27:41,889 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2022-01-10 02:27:41,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:41,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418360604] [2022-01-10 02:27:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:41,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:42,003 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 02:27:42,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:42,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418360604] [2022-01-10 02:27:42,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418360604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:42,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:42,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:42,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044960593] [2022-01-10 02:27:42,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:42,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:42,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:42,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:42,006 INFO L87 Difference]: Start difference. First operand 1631 states and 2585 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:42,043 INFO L93 Difference]: Finished difference Result 1765 states and 2797 transitions. [2022-01-10 02:27:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 02:27:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:42,051 INFO L225 Difference]: With dead ends: 1765 [2022-01-10 02:27:42,051 INFO L226 Difference]: Without dead ends: 1695 [2022-01-10 02:27:42,052 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 02:27:42,053 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 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 02:27:42,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-01-10 02:27:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-01-10 02:27:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.5872264931992903) internal successors, (2684), 1692 states have internal predecessors, (2684), 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 02:27:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2684 transitions. [2022-01-10 02:27:42,091 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2684 transitions. Word has length 91 [2022-01-10 02:27:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:42,091 INFO L470 AbstractCegarLoop]: Abstraction has 1693 states and 2684 transitions. [2022-01-10 02:27:42,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2684 transitions. [2022-01-10 02:27:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:27:42,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:42,093 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] [2022-01-10 02:27:42,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:27:42,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:42,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2022-01-10 02:27:42,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:42,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089726179] [2022-01-10 02:27:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:42,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:42,174 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 02:27:42,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:42,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089726179] [2022-01-10 02:27:42,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089726179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:42,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:42,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:42,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809584991] [2022-01-10 02:27:42,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:42,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:42,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:42,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:42,177 INFO L87 Difference]: Start difference. First operand 1693 states and 2684 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:42,213 INFO L93 Difference]: Finished difference Result 1945 states and 3084 transitions. [2022-01-10 02:27:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:42,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 02:27:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:42,221 INFO L225 Difference]: With dead ends: 1945 [2022-01-10 02:27:42,221 INFO L226 Difference]: Without dead ends: 1813 [2022-01-10 02:27:42,223 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 02:27:42,224 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 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 02:27:42,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-01-10 02:27:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1811. [2022-01-10 02:27:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1809 states have (on average 1.5870646766169154) internal successors, (2871), 1810 states have internal predecessors, (2871), 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 02:27:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2871 transitions. [2022-01-10 02:27:42,264 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2871 transitions. Word has length 91 [2022-01-10 02:27:42,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:42,265 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 2871 transitions. [2022-01-10 02:27:42,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2871 transitions. [2022-01-10 02:27:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:27:42,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:42,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:27:42,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:27:42,267 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2022-01-10 02:27:42,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:42,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453118436] [2022-01-10 02:27:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:42,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:42,324 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 02:27:42,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453118436] [2022-01-10 02:27:42,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453118436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:42,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:42,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:42,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676486113] [2022-01-10 02:27:42,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:42,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:42,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:42,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:42,326 INFO L87 Difference]: Start difference. First operand 1811 states and 2871 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:42,371 INFO L93 Difference]: Finished difference Result 2287 states and 3625 transitions. [2022-01-10 02:27:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 02:27:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:42,381 INFO L225 Difference]: With dead ends: 2287 [2022-01-10 02:27:42,382 INFO L226 Difference]: Without dead ends: 2037 [2022-01-10 02:27:42,383 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 02:27:42,387 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 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 02:27:42,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2022-01-10 02:27:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2035. [2022-01-10 02:27:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 2033 states have (on average 1.5853418593212) internal successors, (3223), 2034 states have internal predecessors, (3223), 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 02:27:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3223 transitions. [2022-01-10 02:27:42,443 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 3223 transitions. Word has length 91 [2022-01-10 02:27:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:42,444 INFO L470 AbstractCegarLoop]: Abstraction has 2035 states and 3223 transitions. [2022-01-10 02:27:42,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 3223 transitions. [2022-01-10 02:27:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:27:42,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:42,445 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] [2022-01-10 02:27:42,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:27:42,446 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2022-01-10 02:27:42,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:42,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058574018] [2022-01-10 02:27:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:42,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:42,534 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 02:27:42,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:42,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058574018] [2022-01-10 02:27:42,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058574018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:42,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:42,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:42,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001895524] [2022-01-10 02:27:42,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:42,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:42,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:42,537 INFO L87 Difference]: Start difference. First operand 2035 states and 3223 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:42,587 INFO L93 Difference]: Finished difference Result 2935 states and 4641 transitions. [2022-01-10 02:27:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:42,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 02:27:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:42,599 INFO L225 Difference]: With dead ends: 2935 [2022-01-10 02:27:42,599 INFO L226 Difference]: Without dead ends: 2461 [2022-01-10 02:27:42,603 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 02:27:42,604 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 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 02:27:42,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2022-01-10 02:27:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2459. [2022-01-10 02:27:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2457 states have (on average 1.5803825803825804) internal successors, (3883), 2458 states have internal predecessors, (3883), 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 02:27:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3883 transitions. [2022-01-10 02:27:42,683 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3883 transitions. Word has length 91 [2022-01-10 02:27:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:42,684 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 3883 transitions. [2022-01-10 02:27:42,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3883 transitions. [2022-01-10 02:27:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:27:42,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:42,685 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] [2022-01-10 02:27:42,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:27:42,685 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:42,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:42,686 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2022-01-10 02:27:42,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:42,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21731347] [2022-01-10 02:27:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:42,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:42,737 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 02:27:42,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:42,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21731347] [2022-01-10 02:27:42,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21731347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:42,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:42,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:42,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047009151] [2022-01-10 02:27:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:42,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:42,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:42,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:42,740 INFO L87 Difference]: Start difference. First operand 2459 states and 3883 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:42,819 INFO L93 Difference]: Finished difference Result 4159 states and 6541 transitions. [2022-01-10 02:27:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:42,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-01-10 02:27:42,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:42,832 INFO L225 Difference]: With dead ends: 4159 [2022-01-10 02:27:42,833 INFO L226 Difference]: Without dead ends: 3261 [2022-01-10 02:27:42,835 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 02:27:42,836 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 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 02:27:42,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:42,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2022-01-10 02:27:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3259. [2022-01-10 02:27:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3257 states have (on average 1.5704636168252994) internal successors, (5115), 3258 states have internal predecessors, (5115), 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 02:27:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 5115 transitions. [2022-01-10 02:27:42,998 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 5115 transitions. Word has length 91 [2022-01-10 02:27:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:42,998 INFO L470 AbstractCegarLoop]: Abstraction has 3259 states and 5115 transitions. [2022-01-10 02:27:42,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 02:27:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 5115 transitions. [2022-01-10 02:27:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:27:43,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:43,000 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] [2022-01-10 02:27:43,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:27:43,002 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2022-01-10 02:27:43,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:43,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312480269] [2022-01-10 02:27:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:43,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:43,130 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 02:27:43,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:43,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312480269] [2022-01-10 02:27:43,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312480269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:43,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:43,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:27:43,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600499576] [2022-01-10 02:27:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:43,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:27:43,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:27:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:27:43,133 INFO L87 Difference]: Start difference. First operand 3259 states and 5115 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 02:27:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:44,456 INFO L93 Difference]: Finished difference Result 27031 states and 42089 transitions. [2022-01-10 02:27:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:27:44,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 91 [2022-01-10 02:27:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:44,557 INFO L225 Difference]: With dead ends: 27031 [2022-01-10 02:27:44,558 INFO L226 Difference]: Without dead ends: 25333 [2022-01-10 02:27:44,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-01-10 02:27:44,572 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:27:44,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:27:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25333 states. [2022-01-10 02:27:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25333 to 4955. [2022-01-10 02:27:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4955 states, 4953 states have (on average 1.5527962850797496) internal successors, (7691), 4954 states have internal predecessors, (7691), 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 02:27:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4955 states to 4955 states and 7691 transitions. [2022-01-10 02:27:45,153 INFO L78 Accepts]: Start accepts. Automaton has 4955 states and 7691 transitions. Word has length 91 [2022-01-10 02:27:45,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:45,154 INFO L470 AbstractCegarLoop]: Abstraction has 4955 states and 7691 transitions. [2022-01-10 02:27:45,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 02:27:45,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4955 states and 7691 transitions. [2022-01-10 02:27:45,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:27:45,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:45,155 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] [2022-01-10 02:27:45,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:27:45,155 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2022-01-10 02:27:45,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:45,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049518413] [2022-01-10 02:27:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:45,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:45,224 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 02:27:45,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:45,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049518413] [2022-01-10 02:27:45,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049518413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:45,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:45,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:45,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315046535] [2022-01-10 02:27:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:45,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:45,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:45,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:45,229 INFO L87 Difference]: Start difference. First operand 4955 states and 7691 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 02:27:45,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:45,702 INFO L93 Difference]: Finished difference Result 11391 states and 17517 transitions. [2022-01-10 02:27:45,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:45,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 02:27:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:45,722 INFO L225 Difference]: With dead ends: 11391 [2022-01-10 02:27:45,722 INFO L226 Difference]: Without dead ends: 7997 [2022-01-10 02:27:45,731 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 02:27:45,732 INFO L933 BasicCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:27:45,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7997 states. [2022-01-10 02:27:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7997 to 7931. [2022-01-10 02:27:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7931 states, 7929 states have (on average 1.522890654559213) internal successors, (12075), 7930 states have internal predecessors, (12075), 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 02:27:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 12075 transitions. [2022-01-10 02:27:46,317 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 12075 transitions. Word has length 93 [2022-01-10 02:27:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:46,318 INFO L470 AbstractCegarLoop]: Abstraction has 7931 states and 12075 transitions. [2022-01-10 02:27:46,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 02:27:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 12075 transitions. [2022-01-10 02:27:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:27:46,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:46,320 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] [2022-01-10 02:27:46,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:27:46,320 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2022-01-10 02:27:46,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:46,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366141832] [2022-01-10 02:27:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:46,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:46,589 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 02:27:46,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:46,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366141832] [2022-01-10 02:27:46,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366141832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:46,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:46,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:27:46,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210876806] [2022-01-10 02:27:46,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:46,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:27:46,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:46,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:27:46,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:27:46,591 INFO L87 Difference]: Start difference. First operand 7931 states and 12075 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 02:27:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:47,383 INFO L93 Difference]: Finished difference Result 14303 states and 21677 transitions. [2022-01-10 02:27:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:27:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 93 [2022-01-10 02:27:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:47,403 INFO L225 Difference]: With dead ends: 14303 [2022-01-10 02:27:47,404 INFO L226 Difference]: Without dead ends: 7933 [2022-01-10 02:27:47,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:27:47,416 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 10977 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10977 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:27:47,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10977 Valid, 2292 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:27:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7933 states. [2022-01-10 02:27:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7933 to 7931. [2022-01-10 02:27:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7931 states, 7929 states have (on average 1.514819018791777) internal successors, (12011), 7930 states have internal predecessors, (12011), 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 02:27:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 12011 transitions. [2022-01-10 02:27:48,073 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 12011 transitions. Word has length 93 [2022-01-10 02:27:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:48,073 INFO L470 AbstractCegarLoop]: Abstraction has 7931 states and 12011 transitions. [2022-01-10 02:27:48,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 02:27:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 12011 transitions. [2022-01-10 02:27:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:27:48,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:48,077 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] [2022-01-10 02:27:48,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:27:48,078 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:48,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2022-01-10 02:27:48,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:48,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960298013] [2022-01-10 02:27:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:48,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:48,131 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 02:27:48,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:48,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960298013] [2022-01-10 02:27:48,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960298013] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:48,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:48,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:48,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000157470] [2022-01-10 02:27:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:48,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:48,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:48,134 INFO L87 Difference]: Start difference. First operand 7931 states and 12011 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 02:27:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:48,961 INFO L93 Difference]: Finished difference Result 19903 states and 29805 transitions. [2022-01-10 02:27:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 02:27:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:48,994 INFO L225 Difference]: With dead ends: 19903 [2022-01-10 02:27:48,995 INFO L226 Difference]: Without dead ends: 13533 [2022-01-10 02:27:49,009 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 02:27:49,010 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 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 02:27:49,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13533 states. [2022-01-10 02:27:49,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13533 to 13531. [2022-01-10 02:27:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13531 states, 13529 states have (on average 1.4885800872200459) internal successors, (20139), 13530 states have internal predecessors, (20139), 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 02:27:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 20139 transitions. [2022-01-10 02:27:50,035 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 20139 transitions. Word has length 93 [2022-01-10 02:27:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:50,035 INFO L470 AbstractCegarLoop]: Abstraction has 13531 states and 20139 transitions. [2022-01-10 02:27:50,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 02:27:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 20139 transitions. [2022-01-10 02:27:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 02:27:50,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:50,037 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] [2022-01-10 02:27:50,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:27:50,037 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:50,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2022-01-10 02:27:50,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:50,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65069615] [2022-01-10 02:27:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:50,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:50,128 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 02:27:50,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:50,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65069615] [2022-01-10 02:27:50,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65069615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:50,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:50,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:27:50,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575468256] [2022-01-10 02:27:50,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:50,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:27:50,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:50,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:27:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:27:50,131 INFO L87 Difference]: Start difference. First operand 13531 states and 20139 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 02:27:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:51,872 INFO L93 Difference]: Finished difference Result 22401 states and 33051 transitions. [2022-01-10 02:27:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:27:51,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 94 [2022-01-10 02:27:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:51,921 INFO L225 Difference]: With dead ends: 22401 [2022-01-10 02:27:51,921 INFO L226 Difference]: Without dead ends: 22399 [2022-01-10 02:27:51,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:27:51,932 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:27:51,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22399 states. [2022-01-10 02:27:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22399 to 13915. [2022-01-10 02:27:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13915 states, 13913 states have (on average 1.4704952202975634) internal successors, (20459), 13914 states have internal predecessors, (20459), 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 02:27:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13915 states to 13915 states and 20459 transitions. [2022-01-10 02:27:53,023 INFO L78 Accepts]: Start accepts. Automaton has 13915 states and 20459 transitions. Word has length 94 [2022-01-10 02:27:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:53,023 INFO L470 AbstractCegarLoop]: Abstraction has 13915 states and 20459 transitions. [2022-01-10 02:27:53,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 02:27:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13915 states and 20459 transitions. [2022-01-10 02:27:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 02:27:53,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:53,025 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] [2022-01-10 02:27:53,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:27:53,025 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2022-01-10 02:27:53,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:53,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679393211] [2022-01-10 02:27:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:53,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:53,059 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 02:27:53,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:53,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679393211] [2022-01-10 02:27:53,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679393211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:53,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:53,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:27:53,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125895653] [2022-01-10 02:27:53,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:53,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:27:53,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:27:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:27:53,061 INFO L87 Difference]: Start difference. First operand 13915 states and 20459 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 02:27:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:27:54,191 INFO L93 Difference]: Finished difference Result 26466 states and 38897 transitions. [2022-01-10 02:27:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:27:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2022-01-10 02:27:54,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:27:54,226 INFO L225 Difference]: With dead ends: 26466 [2022-01-10 02:27:54,226 INFO L226 Difference]: Without dead ends: 19679 [2022-01-10 02:27:54,240 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 02:27:54,240 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 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 02:27:54,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:27:54,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19679 states. [2022-01-10 02:27:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19679 to 19677. [2022-01-10 02:27:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19677 states, 19675 states have (on average 1.4595679796696315) internal successors, (28717), 19676 states have internal predecessors, (28717), 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 02:27:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19677 states to 19677 states and 28717 transitions. [2022-01-10 02:27:55,846 INFO L78 Accepts]: Start accepts. Automaton has 19677 states and 28717 transitions. Word has length 95 [2022-01-10 02:27:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:27:55,846 INFO L470 AbstractCegarLoop]: Abstraction has 19677 states and 28717 transitions. [2022-01-10 02:27:55,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 02:27:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 19677 states and 28717 transitions. [2022-01-10 02:27:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 02:27:55,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:27:55,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 02:27:55,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:27:55,864 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:27:55,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:27:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2022-01-10 02:27:55,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:27:55,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639727113] [2022-01-10 02:27:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:27:55,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:27:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:27:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 02:27:55,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:27:55,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639727113] [2022-01-10 02:27:55,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639727113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:27:55,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:27:55,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:27:55,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296858623] [2022-01-10 02:27:55,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:27:55,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:27:55,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:27:55,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:27:55,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:27:55,983 INFO L87 Difference]: Start difference. First operand 19677 states and 28717 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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 02:28:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:28:04,457 INFO L93 Difference]: Finished difference Result 149997 states and 217333 transitions. [2022-01-10 02:28:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:28:04,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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 02:28:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:28:04,767 INFO L225 Difference]: With dead ends: 149997 [2022-01-10 02:28:04,768 INFO L226 Difference]: Without dead ends: 131883 [2022-01-10 02:28:04,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:28:04,831 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 10879 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10879 SdHoareTripleChecker+Valid, 4136 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:28:04,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10879 Valid, 4136 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:28:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131883 states. [2022-01-10 02:28:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131883 to 37789. [2022-01-10 02:28:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37789 states, 37787 states have (on average 1.4493079630560775) internal successors, (54765), 37788 states have internal predecessors, (54765), 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 02:28:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37789 states to 37789 states and 54765 transitions. [2022-01-10 02:28:08,586 INFO L78 Accepts]: Start accepts. Automaton has 37789 states and 54765 transitions. Word has length 130 [2022-01-10 02:28:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:28:08,587 INFO L470 AbstractCegarLoop]: Abstraction has 37789 states and 54765 transitions. [2022-01-10 02:28:08,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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 02:28:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 37789 states and 54765 transitions. [2022-01-10 02:28:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 02:28:08,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:28:08,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 02:28:08,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:28:08,599 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:28:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:28:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2022-01-10 02:28:08,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:28:08,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997990806] [2022-01-10 02:28:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:28:08,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:28:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:28:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 02:28:08,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:28:08,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997990806] [2022-01-10 02:28:08,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997990806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:28:08,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:28:08,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:28:08,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747966542] [2022-01-10 02:28:08,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:28:08,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:28:08,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:28:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:28:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:28:08,704 INFO L87 Difference]: Start difference. First operand 37789 states and 54765 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 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 02:28:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:28:19,513 INFO L93 Difference]: Finished difference Result 168109 states and 243381 transitions. [2022-01-10 02:28:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:28:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 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 130 [2022-01-10 02:28:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:28:19,908 INFO L225 Difference]: With dead ends: 168109 [2022-01-10 02:28:19,908 INFO L226 Difference]: Without dead ends: 149995 [2022-01-10 02:28:19,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:28:19,968 INFO L933 BasicCegarLoop]: 1710 mSDtfsCounter, 10608 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10608 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:28:19,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10608 Valid, 4240 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:28:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149995 states. [2022-01-10 02:28:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149995 to 64989. [2022-01-10 02:28:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64989 states, 64987 states have (on average 1.4414729099666086) internal successors, (93677), 64988 states have internal predecessors, (93677), 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 02:28:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64989 states to 64989 states and 93677 transitions. [2022-01-10 02:28:25,670 INFO L78 Accepts]: Start accepts. Automaton has 64989 states and 93677 transitions. Word has length 130 [2022-01-10 02:28:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:28:25,670 INFO L470 AbstractCegarLoop]: Abstraction has 64989 states and 93677 transitions. [2022-01-10 02:28:25,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 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 02:28:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 64989 states and 93677 transitions. [2022-01-10 02:28:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 02:28:25,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:28:25,683 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 02:28:25,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:28:25,683 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:28:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:28:25,684 INFO L85 PathProgramCache]: Analyzing trace with hash 565410506, now seen corresponding path program 1 times [2022-01-10 02:28:25,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:28:25,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541927654] [2022-01-10 02:28:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:28:25,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:28:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:28:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 02:28:25,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:28:25,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541927654] [2022-01-10 02:28:25,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541927654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:28:25,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:28:25,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:28:25,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701246542] [2022-01-10 02:28:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:28:25,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:28:25,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:28:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:28:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:28:25,785 INFO L87 Difference]: Start difference. First operand 64989 states and 93677 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 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)